MODEL G0791 COMBINATION GUNSMITHING LATHE/MILL OWNER's MANUAL (For Models Manufactured Since 9/15)

MODEL G0791 COMBINATION GUNSMITHING LATHE/MILL OWNER'S MANUAL (For models manufactured since 9/15)

COPYRIGHT © MAY, 2015 BY GRIZZLY INDUSTRIAL, INC., REVISED MAY, 2017 (BL) WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC. #WKBB17270 PRINTED IN CHINA V2.10.17 This manual provides critical safety instructions on the proper setup, operation, maintenance, and service of this machine/tool. Save this document, refer to it often, and use it to instruct other operators.

Failure to read, understand and follow the instructions in this manual may result in fire or serious personal injury—including amputation, electrocution, or death.

The owner of this machine/tool is solely responsible for its safe use. This responsibility includes but is not limited to proper installation in a safe environment, personnel training and usage authorization, proper inspection and maintenance, manual availability and compre- hension, application of safety devices, cutting/sanding/grinding tool integrity, and the usage of personal protective equipment.

The manufacturer will not be held liable for injury or property damage from negligence, improper training, machine modifications or misuse.

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints. • Crystalline silica from bricks, cement and other masonry products. • Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: Work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles. Table of Contents

INTRODUCTION...... 3 SECTION 4: LATHE OPERATIONS...... 32 Contact Info...... 3 Operation Overview...... 32 Manual Accuracy...... 3 Chuck & Faceplate Mounting...... 33 Identification...... 4 Chuck Safety & Support Devices...... 33 Controls & Components...... 5 Chuck Installation...... 34 Machine Data Sheet...... 8 Chuck Removal...... 35 Scroll Chuck Clamping...... 36 SECTION 1: SAFETY...... 11 Chuck Jaw Reversal...... 36 Safety Instructions for Machinery...... 11 4-Jaw Chuck...... 37 Additional Safety for Metal Lathes...... 13 Faceplate...... 38 Additional Safety for Mills...... 14 Tailstock...... 39 Additional Lathe Chuck Safety...... 15 Centers...... 43 SECTION 2: POWER SUPPLY...... 16 Joining Drill Chuck & Arbor...... 45 Steady Rest...... 46 SECTION 3: SETUP...... 18 Follow Rest...... 47 Preparation...... 18 Carriage & Slide Locks...... 47 Unpacking...... 18 Compound Rest...... 47 Needed for Setup...... 18 Tool Post...... 48 Inventory...... 19 Spider...... 50 Cleanup...... 20 Manual Feed...... 50 Site Considerations...... 21 Spindle Speed...... 51 Assembly...... 22 Understanding Gear Charts...... 52 Anchoring to Floor...... 25 Power Feed...... 55 Leveling...... 25 End Gears...... 58 Lubricating Lathe...... 26 Threading...... 61 Power Connection...... 26 Test Run...... 28 SECTION 5: MILL OPERATIONS...... 64 Spindle Break-In...... 30 Operation Overview...... 64 Recommended Adjustments...... 31 Removing Compound Rest...... 65 Downfeed Controls...... 66 Headstock Movement...... 67 Table Travel...... 68 Installing/Removing Tooling...... 69 Spindle Speed...... 71 SECTION 6: ACCESSORIES...... 72 SECTION 10: PARTS...... 101 Accessories...... 101 SECTION 7: MAINTENANCE...... 76 Headstock Gearing...... 103 Schedule...... 76 Headstock Controls...... 105 Cleaning/Protecting...... 76 Quick-Change Gearbox...... 107 Lubrication...... 77 Apron...... 109 Machine Storage...... 82 Saddle & Cross Slide...... 111 SECTION 8: SERVICE...... 83 Compound Rest & Tool Holder...... 113 Troubleshooting...... 83 Tailstock...... 114 Adjusting Backlash...... 86 Lathe Motor, Bed, & Stand...... 115 Adjusting Gib...... 87 Feed Rod...... 117 Adjusting Half Nut...... 89 Machine Labels & Cosmetics...... 118 Tensioning/Replacing V-Belt...... 89 Electrical Components...... 119 Installing/Removing Gap Insert...... 90 Steady Rest...... 120 Adjusting Spindle Bearing Preload...... 91 Follow Rest...... 120 Mill Headstock...... 121 SECTION 9: WIRING...... 94 Column & Fine Downfeed...... 124 Wiring Safety Instructions...... 94 Wiring Overview...... 95 SECTION 11: APPENDIX...... 125 Electrical Cabinet Wiring Diagram...... 96 Feed Chart...... 125 Lathe Motor Wiring Diagram...... 98 Thread Dial Chart...... 125 Mill Motor & Work Lamp Wiring Diagram..... 99 Metric Threading Chart...... 125 Control Panel Wiring Diagrams...... 100 Inch Threading Chart...... 125 WARRANTY & RETURNS...... 129 INTRODUCTION Contact Info Manual Accuracy

We stand behind our machines! If you have ques- We are proud to provide a high-quality owner’s tions or need help, contact us with the information manual with your new machine! below. Before contacting, make sure you get the serial number and manufacture date from the We made every effort to be exact with the instruc- machine ID label. This will help us help you faster. tions, specifications, drawings, and photographs in this manual. Sometimes we make mistakes, but Grizzly Technical Support our policy of continuous improvement also means 1815 W. Battlefield that sometimes the machine you receive is Springfield, MO 65807 slightly different than shown in the manual. Phone: (570) 546-9663 Email: [email protected] If you find this to be the case, and the difference between the manual and machine leaves you We want your feedback on this manual. What did confused or unsure about something, check our you like about it? Where could it be improved? website for an updated version. We post current Please take a few minutes to give us feedback. manuals and manual updates for free on our website at www.grizzly.com. Grizzly Documentation Manager P.O. Box 2069 Alternatively, you can call our Technical Support Bellingham, WA 98227-2069 for help. Before calling, make sure you write down Email: [email protected] the Manufacture Date and Serial Number from the machine ID label (see below). This information is required for us to provide proper tech support, and it helps us determine if updated documentation is available for your machine. To reduce your risk of serious injury, read this entire manual BEFORE using machine.

Manufacture Date

Serial Number

Model G0791 (Mfd. Since 9/15) -3- Identification

D E F G H I

C J K L

A N

O U

T Q

R S

A. Quick-Change Gearbox Controls (see Page 5 K. Tailstock (see Page 6 for details) for details) L. Back Splash B. Headstock Controls (see Page 5 for details) M. Longitudinal Leadscrew C. End Gear and Belt Cover N. Feed Rod D. 3-Jaw Chuck O. Control Rod E. Halogen Work Light P. Chip Tray F. Mill Spindle Speed Shift Levers Q. Storage Cabinet G. Mill Vertical Travel Handwheel R. Stand Mounting Points (2 of 4) H. Fine Downfeed Handwheel S. Carriage (see Page 6 for details) I. Coarse Downfeed Handwheel T. Storage Cabinet J. Compound Rest Handwheel U. Quick-Change Tool Post

-4- Model G0791 (Mfd. Since 9/15) A. Spindle Speed Levers: Used to select one Controls & of the nine spindle speeds.

Components B. Feed Direction Lever: Controls rotation direction of leadscrew and feed rod.

C. Metric Threading Chart: Displays the necessary configuration of gearbox levers and To reduce your risk of end gears for metric threading options. serious injury, read this entire manual BEFORE D. Emergency Stop/RESET Button: Stops all using machine. machine functions. Twist clockwise to reset.

E. Spindle Speed Chart: Shows how to arrange Refer to Figures 1–5 and the following descrip- spindle speed levers for each of the nine tions to become familiar with the basic controls of spindle speeds. this machine. F. POWER Start Button: Enables power to Many of the controls will be explained in greater lathe/mill spindle motors after the emergency detail later in this manual. stop button is reset.

Lathe Headstock & Quick-Change G. INCHING (Jog) Button: Rotates spindle as Gearbox long as it is pressed.

H. POWER Lamp: Illuminates when lathe con- A trols are receiving power (Emergency Stop/ RESET button must be reset). B I. Mill FWD/REV Switch: Selects between forward and reverse mill spindle rotation. Setting the switch to the "Mill" position turns C D E F G H the mill OFF. I J. Headstock Feed Selection Lever: Selects leadscrew for threading operations or feed rod for power feed operations.

J K. Quick-Change Gearbox Levers: Control the leadscrew and feed rod rotation speeds for threading and power feed operations.

L. Inch Threading Chart: Displays the necessary configuration of gearbox levers and end gears for inch threading options. L K

Figure 1. Headstock and quick-change gearbox controls.

Model G0791 (Mfd. Since 9/15) -5- Carriage Tailstock

W X Y V N M

U P

Q Z T

AA S R Figure 2. Carriage controls. Figure 3. Tailstock controls.

M. Quick-Change Tool Post: Allows the opera- Y. Quill Handwheel: Moves quill toward or tor to quickly load and unload tools. away from spindle.

1 N. Compound Rest Handwheel: Moves tool Z. ⁄2" Square-Drive Lock-Down: Used with a toward or away from workpiece at the preset torque wrench for precise alignment of cen- angle of compound rest. ters.

O. Carriage Lock Cap Screw: Secures car- AA. Tailstock Offset Screw (1 of 2): Adjusts riage in place for greater rigidity. tailstock offset left or right from spindle centerline. P . Thread Dial: Indicates when to engage half nut during inch threading operations. End Gears

Q. Spindle Lever: Starts, stops, and reverses direction of spindle rotation.

R . Half Nut Lever: Engages/disengages half nut for threading operations.

S. Apron Feed Selection Lever: Selects carriage or cross slide for power feed.

T. Carriage Handwheel: Moves carriage along End bed. Gears U. Cross Slide Handwheel: Moves tooling toward or away from the workpiece. Figure 4. End gears. V. Quill: Holds centers and tooling. Configuring the end gears (shown in Figure 139) W. Quill Lock Lever: Secures quill in position. controls the speed of the leadscrew for threading or the feed rod for power feed operations. X. Tailstock Lock Lever: Secures tailstock in position along bedway.

-6- Model G0791 (Mfd. Since 9/15) Milling Headstock AE. Depth Scale Lock Knob: Locks the depth scale in position. AK AB AC AF. Coarse Downfeed Handwheel: Moves spin- AD dle down quickly when rotated and automatic spring return brings spindle back up to top AE when you release downward pressure on handles. Typically used for drilling holes or checking spindle positioning during setups. AF AG. Downfeed Selector Knob: Push in to engage fine downfeed; pull out to engage AG coarse downfeed. AJ AI AH AH. Depth Pointer and Scale: Indicates vertical position of the quill. Figure 5. Milling headstock controls. AI. Fine Downfeed Handwheel: Provides fine AB. Mill Spindle Speed Shift Levers: Select control over vertical spindle travel to provide between 250, 530, 1100, and 2300 RPM. Z-axis control when milling. AC. Vertical Travel Handwheel: Raises and low- AJ. Mill Spindle Speed Chart: Indicates shift ers headstock for Z-axis control over spindle lever positions for various spindle speeds. positioning during setups. AK. Quill Lock Bolt: Locks vertical position of AD. Z-Axis Lock Bolt: Locks vertical position of quill (or Z-axis) when tightened. Typically mill headstock when tightened. used in conjunction with spindle downfeed controls when milling.

Model G0791 (Mfd. Since 9/15) -7- Machine Data Sheet MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G0791 12" X 36" COMBINATION GUNSMITHING LATHE/MILL

Product Dimensions:

Weight...... 1345 lbs. Width (side-to-side) x Depth (front-to-back) x Height...... 66 x 27-1/2 x 75 in. Footprint (Length x Width)...... 57-1/2 x 14-1/2 in. Shipping Dimensions: Carton #1 Type...... Wood Crate Content...... Machine Weight...... 1367 lbs. Length x Width x Height...... 67 x 29 x 52 in. Must Ship Upright...... Yes Carton #2 Type...... Cardboard Box Content...... Left Stand Weight...... 106 lbs. Length x Width x Height...... 30 x 14 x 15 in. Must Ship Upright...... No Carton #3 Type...... Cardboard Box Content...... Right Stand Weight...... 93 lbs. Length x Width x Height...... 31 x 12 x 15 in. Must Ship Upright...... No Electrical:

Power Requirement...... 220V, Single-Phase, 60 Hz Full-Load Current Rating...... 8.5A Minimum Circuit Size...... 15A Connection Type...... Cord & Plug Recommended Power Cord...... "S"-Type, 3-Wire, 14 AWG, 300 VAC Plug Included...... No Recommended Plug Type...... 6-15 Switch Type...... Control Panel w/Magnetic Switch Protection Motors: Mill Spindle

Horsepower...... 3/4 HP Phase...... Single-Phase Amps...... 4.5A Speed...... 1720 RPM Type...... TEFC Capacitor-Start Induction Power Transfer ...... Gear Drive Bearings...... Shielded & Permanently Lubricated Centrifugal Switch/Contacts Type...... Internal

Model G0791 The information contained herein is deemed accurate as of 2/17/2020 and represents our most recent product specifications. PAGE 1 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. -8- Model G0791 (Mfd. Since 9/15) Lathe Spindle

Horsepower...... 2 HP Phase...... Single-Phase Amps...... 8.5A Speed...... 1725 RPM Type...... TEFC Capacitor-Start Induction Power Transfer ...... Twin V-Belt Drive Bearings...... Shielded & Permanently Lubricated Centrifugal Switch/Contacts Type...... Internal

Other Specifications:

Country of Origin ...... China Warranty ...... 1 Year Approximate Assembly & Setup Time ...... 1-1/2 Hours Serial Number Location ...... ID Label on Headstock ISO 9001 Factory ...... No Certified by a Nationally Recognized Testing Laboratory (NRTL) ...... No Features:

1/2" SQ. Drive in Tailstock for Using Torque Wrench to Lock Tailstock Down Precisely Every Time Min. Gun Barrel Length Through Spindle w/4-Jaw Chuck - 23" (Allowing for Barrel Sticking Out for Threading) Removable Gap Bed Allows Turnings up to 17" in Diameter Easy-to-Use Lever Controls Full Length Splash Guard On/Off Reverse Switch on Carriage Halogen Work Light Ball Bearing Steady/Follow Rests Outboard Spindle "Spider" Mount w/4 Brass-Tipped Screws Socket for Tailstock Lock Cast-Iron Stand with Extended Base Accessories Included:

1 MT#3 Live Center 10" Faceplate 2 MT#3 Dead Centers (1 Carbide Tipped) 6" 3-Jaw Chuck with 2-Piece Reversible Jaws 8" 4-Jaw Chuck with Reversible Jaws Follow Rest with Roller Tips Quick Change Tool Post with One Tool Holder Set of 7 Change Gears Steady Rest with Roller Tips Tool Box with Service Tools Drill Chuck Arbor R8 x B16 5/8" Drill Chuck Spindle Sleeve R8 x MT#3 Spindle Sleeve MT#3 x MT#2

Model G0791 The information contained herein is deemed accurate as of 2/17/2020 and represents our most recent product specifications. PAGE 2 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G0791 (Mfd. Since 9/15) -9- MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G0791 12" X 36" COMBINATION GUNSMITHING LATHE/MILL

Product Dimensions:

For Your Own Safety, Read Instruction Manual Before Operating This Machine

The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures. Always use common sense and good judgment. Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury. It may also be used to alert against unsafe practices.

Alerts the user to useful information about proper operation of the NOTICE machine to avoid machine damage. Safety Instructions for Machinery

OWNER’S MANUAL. Read and understand this ELECTRICAL EQUIPMENT INJURY RISKS. owner’s manual BEFORE using machine. You can be shocked, burned, or killed by touching live electrical components or improperly grounded TRAINED OPERATORS ONLY. Untrained oper- machinery. To reduce this risk, only allow qualified ators have a higher risk of being hurt or killed. service personnel to do electrical installation or Only allow trained/supervised people to use this repair work, and always disconnect power before machine. When machine is not being used, dis- accessing or exposing electrical equipment. connect power, remove switch keys, or lock-out machine to prevent unauthorized use—especially DISCONNECT POWER FIRST. Always discon- around children. Make your workshop kid proof! nect machine from power supply BEFORE making adjustments, changing tooling, or servicing DANGEROUS ENVIRONMENTS. Do not use machine. This prevents an injury risk from unin- machinery in areas that are wet, cluttered, or have tended startup or contact with live electrical com- poor lighting. Operating machinery in these areas ponents. greatly increases the risk of accidents and injury. EYE PROTECTION. Always wear ANSI-approved MENTAL ALERTNESS REQUIRED. Full mental safety glasses or a face shield when operating or alertness is required for safe operation of machin- observing machinery to reduce the risk of eye ery. Never operate under the influence of drugs or injury or blindness from flying particles. Everyday alcohol, when tired, or when distracted. eyeglasses are NOT approved safety glasses.

Model G0791 (Mfd. Since 9/15) -11-

WEARING PROPER APPAREL. Do not wear FORCING MACHINERY. Do not force machine. clothing, apparel or jewelry that can become It will do the job safer and better at the rate for entangled in moving parts. Always tie back or which it was designed. cover long hair. Wear non-slip footwear to reduce risk of slipping and losing control or accidentally NEVER STAND ON MACHINE. Serious injury contacting cutting tool or moving parts. may occur if machine is tipped or if the cutting tool is unintentionally contacted. HAZARDOUS DUST. Dust created by machinery operations may cause cancer, birth defects, or STABLE MACHINE. Unexpected movement dur- long-term respiratory damage. Be aware of dust ing operation greatly increases risk of injury or hazards associated with each workpiece mate- loss of control. Before starting, verify machine is rial. Always wear a NIOSH-approved respirator to stable and mobile base (if used) is locked. reduce your risk. USE RECOMMENDED ACCESSORIES. Consult HEARING PROTECTION. Always wear hear- this owner’s manual or the manufacturer for rec- ing protection when operating or observing loud ommended accessories. Using improper acces- machinery. Extended exposure to this noise sories will increase the risk of serious injury. without hearing protection can cause permanent hearing loss. UNATTENDED OPERATION. To reduce the risk of accidental injury, turn machine OFF and REMOVE ADJUSTING TOOLS. Tools left on ensure all moving parts completely stop before machinery can become dangerous projectiles walking away. Never leave machine running upon startup. Never leave chuck keys, wrenches, while unattended. or any other tools on machine. Always verify removal before starting! MAINTAIN WITH CARE. Follow all maintenance instructions and lubrication schedules to keep USE CORRECT TOOL FOR THE JOB. Only use machine in good working condition. A machine this tool for its intended purpose—do not force that is improperly maintained could malfunction, it or an attachment to do a job for which it was leading to serious personal injury or death. not designed. Never make unapproved modifications—modifying tool or using it differently than DAMAGED PARTS. Regularly inspect machine intended may result in malfunction or mechanical for damaged, loose, or mis-adjusted parts—or failure that can lead to personal injury or death! any condition that could affect safe operation. Immediately repair/replace BEFORE operating AWKWARD POSITIONS. Keep proper footing machine. For your own safety, DO NOT operate and balance at all times when operating machine. machine with damaged parts! Do not overreach! Avoid awkward hand positions that make workpiece control difficult or increase MAINTAIN POWER CORDS. When disconnect- the risk of accidental injury. ing cord-connected machines from power, grab and pull the plug—NOT the cord. Pulling the cord CHILDREN & BYSTANDERS. Keep children and may damage the wires inside. Do not handle bystanders at a safe distance from the work area. cord/plug with wet hands. Avoid cord damage by Stop using machine if they become a distraction. keeping it away from heated surfaces, high traffic areas, harsh chemicals, and wet/damp locations. GUARDS & COVERS. Guards and covers reduce accidental contact with moving parts or flying EXPERIENCING DIFFICULTIES. If at any time debris. Make sure they are properly installed, you experience difficulties performing the intend- undamaged, and working correctly BEFORE ed operation, stop using the machine! Contact our operating machine. Technical Support at (570) 546-9663.

-12- Model G0791 (Mfd. Since 9/15) Additional Safety for Metal Lathes

Serious injury or death can occur from getting entangled in, crushed between, or struck by rotating parts on a lathe! Unsecured tools or workpieces that fly loose from rotating objects can also strike nearby operators with deadly force. To minimize the risk of getting hurt or killed, anyone operating this machine MUST completely heed the hazards and warnings below. CLOTHING, JEWELRY & LONG HAIR. Tie back SECURE WORKPIECE. An improperly secured long hair, remove jewelry, and do not wear loose workpiece can fly off spindle with deadly force. clothing or gloves. These can easily get caught on Make sure workpiece is properly secured before rotating parts and pull you into lathe. starting the lathe.

ROTATING PARTS. Always keep hands and body CHUCKS. Chucks can be heavy and difficult to at a safe distance from rotating parts—especially hold. During installation and removal, protect your those with projecting surfaces. Never hold any- hands and precision bed ways by using a chuck thing against rotating workpiece, such as emery cradle or piece of plywood over the bed ways. Use cloth, that can pull you into lathe. lifting equipment, as necessary, for large chucks.

GUARDING. Guards and covers protect against STOPPING SPINDLE. Always allow spindle to entanglement or flying objects. Always ensure they completely stop on its own, or use a brake, if are properly installed while machine is running. provided. Never put hands or another object on a spinning workpiece to make it stop faster. ADJUSTMENT TOOLS. Remove all chuck keys, wrenches, and adjustment tools before turning CRASHING. A serious explosion of metal parts lathe ON. A tool left on the lathe can become a can occur if cutting tool or other lathe component deadly projectile when spindle is started. hits rotating chuck or a projecting part of workpiece. Resulting metal fragments can strike nearby SAFE CLEARANCES. Before starting spindle, people and lathe will be seriously damaged. To verify workpiece has adequate clearance by hand- reduce risk of crashing, ALWAYS release automat- rotating it through its entire range of motion. ic feeds after use, NEVER leave lathe unattended, and CHECK all clearances before starting lathe. NEW SETUPS. Test each new setup by starting spindle rotation at the lowest speed and standing COOLANT SAFETY. Coolant can become very to the side of the lathe until workpiece reaches full toxic through prolonged use and aging. To mini- speed and you can verify safe rotation. mize toxicity, change coolant regularly. When using, position nozzle properly to avoid splashing SPINDLE SPEEDS. Using spindle speeds that are operator or causing a slipping hazard on floor. too fast for the workpiece or clamping equipment can cause rotating parts to come loose and strike TOOL SELECTION. Cutting with incorrect or dull nearby people with deadly force. Always use slow tooling increases risk of injury from broken or dis- spindle speeds with large or non-concentric work- lodged components, or as a result of extra force pieces. Never exceed rated RPM of the chuck. required for operation. Always use sharp tooling that is right for the job. LONG STOCK SAFETY. Long stock can whip violently if not properly supported. Always support SANDING/POLISHING. To reduce risk of entan- any stock that extends from the chuck/headstock glement, never wrap emery cloth around rotating more than three times its own diameter. workpiece. Instead, use emery cloth with the aid of a tool or backing board. CLEARING CHIPS. Metal chips can be razor sharp. Avoid clearing them by hand or with a rag. MEASURING WORKPIECE. To reduce risk of Use a brush or vacuum instead. entanglement, never measure rotating workpieces.

Model G0791 (Mfd. Since 9/15) -13- Additional Safety for Mills

You can be seriously injured or killed by getting clothing, jewelry, or long hair entangled with rotating cutter/spindle. You can be severely cut or have fingers amputated from contact with rotating cutters. You can be blinded or struck by broken cutting tools, metal chips, workpieces, or adjustment tools thrown from the rotating spindle with great force. To reduce your risk of serious injury when operating this machine, completely heed and understand the following:

UNDERSTAND ALL CONTROLS. Make sure CLEAN MACHINE SAFELY. Metal chips or shav- you understand the function and proper use of all ings can be razor sharp. DO NOT clear chips controls before starting. This will help you avoid by hand or compressed air that can force chips making mistakes that result in serious injury. farther into machine—use a brush or vacuum instead. Never clear chips while spindle is turning. AVOIDING ENTANGLEMENT. DO NOT wear loose clothing, gloves, or jewelry, and tie back SECURE WORKPIECE TO TABLE. Clamp work- long hair. Keep all guards in place and secure. piece to table or secure in a vise mounted to table, Always allow spindle to stop on its own. DO NOT so workpiece cannot unexpectedly shift or spin stop spindle using your hand or any other object. during operation. NEVER hold workpiece by hand during operation. WEAR FACE SHIELD. Always wear a face shield in addition to safety glasses. This provides more PROPERLY MAINTAIN MACHINE. Keep complete protection for your face than safety machine in proper working condition to help glasses alone. ensure that it functions safely and all guards and other components work as intended. Perform rou- USE CORRECT SPINDLE SPEED. Follow rec- tine inspections and all necessary maintenance. ommended speeds and feeds for each size and Never operate machine with damaged or worn type of cutting tool. This helps avoid tool breakage parts that can break or result in unexpected move- during operation and ensures best cutting results. ment during operation.

INSPECT CUTTING TOOL. Inspect cutting tools DISCONNECT POWER FIRST. To reduce risk of for sharpness, chips, or cracks before each use. electrocution or injury from unexpected startup, Replace dull, chipped, or cracked cutting tools make sure mill/drill is turned OFF, disconnected immediately. from power, and all moving parts have come to a complete stop before changing cutting tools or PROPERLY SECURE CUTTER. Firmly secure starting any inspection, adjustment, or mainte- cutting tool or drill bit so it does not fly out of spin- nance procedure. dle during operation. REMOVE CHUCK KEY & SPINDLE TOOLS. POWER DISRUPTION. In the event of a local Always remove chuck key, drawbar wrench, and power outage during operation, turn spindle other tools used on the spindle immediately after switch OFF to avoid a possible sudden startup use. This will prevent them from being thrown by once power is restored. the spindle upon startup.

-14- Model G0791 (Mfd. Since 9/15) Additional Lathe Chuck Safety

ENTANGLEMENT. Entanglement with a rotat- CHUCK CAPACITY. Avoid exceeding the capacity ing chuck can lead to death, amputation, broken of the chuck by clamping an oversized workpiece. bones, or other serious injury. Never attempt to If the workpiece is too large to safely clamp with slow or stop the lathe chuck by hand, and always the chuck, use a faceplate or a larger chuck if pos- roll up long sleeves, tie back long hair, and remove sible. Otherwise, the workpiece could be thrown any jewelry or loose apparel BEFORE operating. from the lathe during operation, resulting in serious impact injury or death. CHUCK SPEED RATING. Excessive spindle speeds greatly increase the risk of the workpiece CLAMPING FORCE. Inadequate clamping force or chuck being thrown from the machine with can lead to the workpiece being thrown from the deadly force. Never use spindle speeds faster than chuck and striking the operator or bystanders. the chuck RPM rating or the safe limits of your Maximum clamping force is achieved when the workpiece. chuck is properly maintained and lubricated, all jaws are fully engaged with the workpiece, and USING CORRECT EQUIPMENT. Many workpiec- the maximum chuck clamping diameter is not es can only be safely turned in a lathe if additional exceeded. support equipment, such as a tailstock or steady/ follow rest, is used. If the operation is too hazard- PROPER MAINTENANCE. All chucks must be ous to be completed with the lathe or existing properly maintained and lubricated to achieve equipment, the operator must have enough experi- maximum clamping force and withstand the rigors ence to know when to use a different machine or of centrifugal force. To reduce the risk of a thrown find a safer way. workpiece, follow all maintenance intervals and instructions in this document. TRAINED OPERATORS ONLY. Using a chuck incorrectly can result in workpieces coming loose DISCONNECT POWER. Serious entanglement or at high speeds and striking the operator or bystand- impact injuries could occur if the lathe is started ers with deadly force. To reduce the risk of this haz- while you are adjusting, servicing, or installing the ard, read and understand this document and seek chuck. Always disconnect the lathe from power additional training from an experienced chuck user before performing these procedures. before using a chuck.

Model G0791 (Mfd. Since 9/15) -15- SECTION 2: POWER SUPPLY

Availability Circuit Requirements for 220V Before installing the machine, consider the avail- This machine is prewired to operate on a power ability and proximity of the required power supply supply circuit that has a verified ground and meets circuit. If an existing circuit does not meet the the following requirements: requirements for this machine, a new circuit must be installed. To minimize the risk of electrocution, Nominal Voltage...... 220V/240V fire, or equipment damage, installation work and Cycle...... 60 Hz electrical wiring must be done by an electrician or Phase...... 1-Phase qualified service personnel in accordance with all Power Supply Circuit...... 15 Amps applicable codes and standards. Plug/Receptacle...... NEMA 6-15 Cord...... “S”-Type, 3-Wire, 14 AWG, 300 VAC

A power supply circuit includes all electrical equipment between the breaker box or fuse panel Electrocution, fire, shock, in the building and the machine. The power sup- or equipment damage ply circuit used for this machine must be sized to may occur if machine is safely handle the full-load current drawn from the not properly grounded machine for an extended period of time. (If this and connected to power machine is connected to a circuit protected by supply. fuses, use a time delay fuse marked D.)

Full-Load Current Rating The full-load current rating is the amperage a machine draws at 100% of the rated output power. For your own safety and protection of On machines with multiple motors, this is the property, consult an electrician if you are amperage drawn by the largest motor or sum of all unsure about wiring practices or electrical motors and electrical devices that might operate codes in your area. at one time during normal operations. Note: Circuit requirements in this manual apply to Full-Load Current Rating at 220V..... 8.5 Amps a dedicated circuit—where only one machine will The full-load current is not the maximum amount be running on the circuit at a time. If machine will of amps that the machine will draw. If the machine be connected to a shared circuit where multiple is overloaded, it will draw additional amps beyond machines may be running at the same time, con- the full-load rating. sult an electrician or qualified service personnel to ensure circuit is properly sized for safe operation. If the machine is overloaded for a sufficient length of time, damage, overheating, or fire may result— especially if connected to an undersized circuit. To reduce the risk of these hazards, avoid over- loading the machine during operation and make sure it is connected to a power supply circuit that meets the specified circuit requirements.

-16- Model G0791 (Mfd. Since 9/15) Grounding Instructions This machine MUST be grounded. In the event of certain malfunctions or breakdowns, grounding Serious injury could occur if you connect reduces the risk of electric shock by providing a machine to power before completing setup path of least resistance for electric current. process. DO NOT connect to power until instructed later in this manual. The power cord and plug specified under “Circuit Requirements for 220V” on the previous page has an equipment-grounding wire and a ground- Improper connection of the equipment-grounding ing prong. The plug must only be inserted into wire can result in a risk of electric shock. The a matching receptacle (outlet) that is properly wire with green insulation (with or without yellow installed and grounded in accordance with all stripes) is the equipment-grounding wire. If repair local codes and ordinances (see figure below). or replacement of the power cord or plug is necessary, do not connect the equipment-grounding wire to a live (current carrying) terminal. GROUNDED 6-15 RECEPTACLE Check with a qualified electrician or service per- Current Carrying Prongs sonnel if you do not understand these grounding requirements, or if you are in doubt about whether the tool is properly grounded. If you ever notice 6-15 PLUG that a cord or plug is damaged or worn, disconnect it from power, and immediately replace it with a new one.

Grounding Pin Extension Cords Figure 6. Typical 6-15 plug and receptacle. We do not recommend using an extension cord with this machine. If you must use an extension cord, only use it if absolutely necessary and only on a temporary basis.

Extension cords cause voltage drop, which can damage electrical components and shorten motor life. Voltage drop increases as the extension cord size gets longer and the gauge size gets smaller (higher gauge numbers indicate smaller sizes).

Any extension cord used with this machine must No adapter should be used with plug. If be in good condition and contain a ground wire plug does not fit available receptacle, or if and matching plug/receptacle. Additionally, it must machine must be reconnected for use on a meet the following size requirements: different type of circuit, reconnection must be performed by an electrician or qualified Minimum Gauge Size...... 14 AWG service personnel, and it must comply with Maximum Length (Shorter is Better)...... 50 ft. all local codes and ordinances.

Model G0791 (Mfd. Since 9/15) -17- SECTION 3: SETUP

Preparation SUFFOCATION HAZARD! The list below outlines the basic process of pre- Keep children and pets away paring your machine for operation. Specific steps from plastic bags or packing are covered later in this section. materials shipped with this machine. The typical preparation process is as follows:

1. Unpack lathe/mill and inventory contents. Needed for Setup

2. Clean lathe/mill and its components. The following are needed to complete the setup 3. Identify an acceptable location for lathe/mill process, but are not included with your machine. and move it to that location. • For Lifting and Moving: 4. Mount lathe/mill on stand and bolt it to floor. — A forklift or other power lifting device rated for at least 2000 lbs. 5. Assemble loose components and make any — Two lifting straps rated for at least 2000 necessary adjustments or inspections to lbs. each ensure lathe/mill is ready for operation. — Lifting chain and safety hook rated for at least 2000 lbs. each 6. Check lathe/mill for proper lubrication. — Another person to guide machine

7. Connect lathe/mill to power source. • For Power Connection: — A power source that meets the minimum 8. Test run lathe/mill to ensure it functions circuit requirements for this machine properly. (review Power Supply on 16 for details) — An electrician or qualified service person- 9. Perform spindle break-in procedure to pre- nel to ensure a safe and code-compliant pare lathe/mill for operation. connection to the power source

• For Assembly: — Shop rags Unpacking — Cleaner/degreaser (see Page 20) — Quality metal protectant lubricant — Safety glasses for each person This machine was carefully packaged for safe — Anchoring hardware as needed (see transport. When unpacking, separate all enclosed Page 25) items from packaging materials and inspect them — Precision level at least 12" long for shipping damage. If items are damaged, please call us immediately at (570) 546-9663.

IMPORTANT: Save all packaging materials until you are completely satisfied with the machine and have resolved any issues between Grizzly or the shipping agent. You MUST have the original packaging to file a freight claim. It is also extremely helpful if you need to return your machine later. -18- Model G0791 (Mfd. Since 9/15) Y. Drill Chuck B16 3-16mm...... 1 Inventory Z. Spindle Sleeve MT3 x MT2...... 1 AA. Live Center MT#3...... 1 AB. Standard Dead Center MT#3...... 1 The following is a list of items shipped with your AC. Carbide-Tipped Dead Center MT#3...... 1 machine. Before beginning setup, lay these items AD. Fasteners (Not Shown): out and inventory them. —Hex Bolts M12-1.75 x 40...... 6 —Flat Washers 12mm...... 6 If any non-proprietary parts are missing (e.g. a —Phillips Head Screws M6-1 x 10...... 8 nut or a washer), we will gladly replace them; or —Hex Nuts M6-1...... 4 for the sake of expediency, replacements can be —Flat Washers 6mm...... 8 obtained at your local hardware store.

Major Components (Figure 7) Qty. A B A. Three-Jaw Chuck 6" w/Jaws...... 1 C B. Follow Rest...... 1 C. Steady Rest...... 1 D D. Backsplash...... 1 E. Tailstock...... 1 F. Stand: —Cabinets (Left & Right)...... 2 E —Front Panel...... 1 —Front Panel Brackets...... 2 G. Quick-Change Tool Post...... 1 G F Loose Components (Figure 8) H. Faceplate 10"...... 1 Figure 7. Major components. I. Toolbox...... 1 J. Bottle for Oil...... 1 K. Four-Jaw Independent Chuck 8" H I J K w/Camlock Studs and Cap Screws...... 1 l. Chuck Wrench...... 2 AA M. Phillips & Flat Screwdrivers #2...... 1 Ea X W AB N. Handwheel Handles...... 2 V O. Tailstock Wrench...... 1 Z 9 10 12 17 22 AC L P. Wrenches ⁄11, ⁄12, ⁄14, ⁄19, ⁄24mm...... 1 Ea S Y Q. Hex Wrench Set 2, 4, 5, 6, 8, 10mm...... 1 Ea R. Drawbar...... 1 T U 5 5 R S. Drill Chuck Key ⁄16" STD 11T SD- ⁄8"...... 1 T. Quick-Change Tool Holder...... 1 U. Change Gears...... 1 Q N M —Gear 27-tooth...... 1 P O —Gear 26-tooth...... 1 Figure 8. Loose components. — Gear 35-tooth...... 1 —Gear 36-tooth...... 1 —Gears 40-tooth (Installed)...... 2 —Gear 45-tooth...... 1 NOTICE —Gear 50-tooth...... 1 If you cannot find an item on this list, care- —Gear 60-tooth...... 1 fully check around/inside the machine and —Gear 86/91-tooth (Installed)...... 1 packaging materials. Often, these items get V. Drill Chuck Arbor R8 x B16...... 1 lost in packaging materials while unpack- W. Spindle Sleeve R8 x MT3...... 1 ing or they are pre-installed at the factory. X. Spindle Sleeve MT5 x MT3...... 1

Model G0791 (Mfd. Since 9/15) -19- Cleanup Gasoline and petroleum The unpainted surfaces of your machine are products have low flash coated with a heavy-duty rust preventative that points and can explode prevents corrosion during shipment and storage. or cause fire if used to This rust preventative works extremely well, but it clean machinery. Avoid will take a little time to clean. using these products to clean machinery. Be patient and do a thorough job cleaning your machine. The time you spend doing this now will give you a better appreciation for the proper care of your machine's unpainted surfaces. Many cleaning solvents are toxic if inhaled. Only There are many ways to remove this rust preven- work in a well-ventilated tative, but the following steps work well in a wide area. variety of situations. Always follow the manufacturer’s instructions with any cleaning product you use and make sure you work in a well-ventilated NOTICE area to minimize exposure to toxic fumes. Avoid harsh solvents like acetone or brake parts cleaner that may damage painted sur- Before cleaning, gather the following: faces. Always test on a small, inconspicu- • Disposable rags ous location first. • Cleaner/degreaser (WD•40 works well) • Safety glasses & disposable gloves • Plastic paint scraper (optional) T23692—Orange Power Degreaser A great product for removing the waxy ship- Basic steps for removing rust preventative: ping grease from the non-painted parts of the machine during clean up. 1. Put on safety glasses.

2. Coat the rust preventative with a liberal amount of cleaner/degreaser, then let it soak for 5–10 minutes.

3. Wipe off the surfaces. If your cleaner/degreaser is effective, the rust preventative will wipe off easily. If you have a plastic paint scraper, scrape off as much as you can first, then wipe off the rest with the rag.

4. Repeat Steps 2–3 as necessary until clean, Figure 9. T23692 Orange Power Degreaser. then coat all unpainted surfaces with a quality metal protectant to prevent rust.

-20- Model G0791 (Mfd. Since 9/15) Site Considerations

Weight Load Physical Environment Refer to the Machine Data Sheet for the weight The physical environment where the machine is of your machine. Make sure that the surface upon operated is important for safe operation and lon- which the machine is placed will bear the weight gevity of machine components. For best results, of the machine, additional equipment that may be operate this machine in a dry environment that is installed on the machine, and the heaviest work- free from excessive moisture, hazardous chemi- piece that will be used. Additionally, consider the cals, airborne abrasives, or extreme conditions. weight of the operator and any dynamic loading Extreme conditions for this type of machinery are that may occur when operating the machine. generally those where the ambient temperature range exceeds 41°–104°F; the relative humidity Space Allocation range exceeds 20%–95% (non-condensing); or the environment is subject to vibration, shocks, Consider the largest size of workpiece that will or bumps. be processed through this machine and provide enough space around the machine for adequate operator material handling or the installation of Electrical Installation auxiliary equipment. With permanent installations, Place this machine near an existing power source. leave enough space around the machine to open Make sure all power cords are protected from or remove doors/covers as required by the main- traffic, material handling, moisture, chemicals, or tenance and service described in this manual. other hazards. Make sure to leave enough space See below for required space allocation. around machine to disconnect power supply or apply a lockout/tagout device, if required.

Lighting Children or untrained people Lighting around the machine must be adequate may be seriously injured by enough that operations can be performed safely. this machine. Only install in an Shadows, glare, or strobe effects that may distract access restricted location. or impede the operator must be eliminated.

Wall

30" Minimum Clearance for Maintenance

Keep 1 Workpiece 27 ⁄2" Loading Area Unobstructed

66" Not to Scale

Figure 10. Minimum working clearances. Model G0791 (Mfd. Since 9/15) -21- 3. Remove crate from lathe shipping pallet, then Assembly remove all loose items.

Important: Lifting and placing the lathe requires at least one other person for assistance and a forklift with two lifting straps, lift- HEAVY LIFT! ing chain, and a safety hook rated for at least Straining or crushing injury 2000 lbs. each. may occur from improperly lifting machine or some of 4. Move lathe to its prepared location while it is its parts. To reduce this risk, still attached to shipping pallet. get help from other people and use a forklift (or other 5. Unbolt lathe from shipping pallet. lifting equipment) rated for weight of this machine. 6. Attach handles to cross slide and carriage handwheels (see Figure 12). Assembling the Model G0791 consists of building the stand assembly, attaching the handwheel handles, placing and securing the lathe on the Handwheel stand, anchoring the stand to the floor, attaching Handles the back splash, and installing the drawbar.

To assemble machine:

1. Position left and right cabinets approximately 34" apart in prepared location.

2. Secure front panel brackets to cabinets with (4) M6-1 x 10 Phillips head screws and (4) 6mm flat washers (see Figure 11). Figure 12. Handwheel handles attached.

7. To balance load for lifting, move tailstock and Brackets carriage to right end of bedway, then lock them in place.

Note: Before attempting to move the carriage, make sure the carriage lock is loose, the half x 4 nut is disengaged, and the feed selection lever is disengaged. Refer to Controls & Components, beginning on Page 5, to identify these components.

Cabinets

Figure 11. Brackets installed (rear view).

-22- Model G0791 (Mfd. Since 9/15) 1 8. Remove headstock end cover to protect it 12. Apply a ⁄4" bead of silicone around bottom during lifting and to gain better access to edge of bedway pedestals. headstock base pedestal (see Figure 13). Note: When the lathe is placed onto the chip pan, the silicone will form a protective seal to help prevent fluid leaking into the cabinets.

13. Place lathe on stand while aligning mounting holes in lathe bed with holes in chip pan. Headstock Pedestal Mounting Points 14. Insert (6) M12-1.75 x 40 hex bolts with (6) 12mm flat washers through pedestals and chip pan, then partially thread them into cabinet tops. Do not fully tighten them until insructed

Note: For best results, recheck the ways in Figure 13. End cover removed for protection and 24 hours to make sure they are still level and to expose headstock pedestal mounting points. have not twisted. Reshim as required.

9. Wrap two lifting straps around bedway ped- 15. Install front panel on panel brackets with (4) estals and route them behind control rod, M6-1 x 10 Phillips head screws, (4) 6mm feed rod, and leadscrew, as shown in Figure flat washers, and (4) M6-1 hex nuts (see 14. This will keep lifting straps away from Figure 15). these critical components and prevent them from bending during lifting.

Lifting Sling

Front Panel

Figure 15. Front panel installed.

Figure 14. Example of lifting slings positioned correctly on a similar machine.

10. Position chip pan on top of cabinet stand and align six mounting holes with those in cabinets.

11. Have another person hold onto lathe to prevent it from swinging as you slowly raise lathe from pallet and move it over stand.

Model G0791 (Mfd. Since 9/15) -23- Recommended: Use mounting holes in cabi- 19. Remove drawbar cap from mill headstock nets (see Figure 16) to mark holes in floor. (see Figure 18). Lift machine/stand assembly out of the way to drill holes, then re-position and anchor assembly to floor. Shim between lathe and Drawbar chip pan as necessary to level ways at all Cap four corner locations. Refer to Anchoring to Floor and Leveling on Page 25 for detailed information.

Figure 18. Location of drawbar cap.

Mounting 20. Insert threaded end of drawbar into mill head- Holes stock (see Figure 19).

Figure 16. Locations of cabinet mounting holes (two on each cabinet).

16. Fully tighten hex bolts from Step 14 to secure lathe/mill to cabinet stand.

Tip: For best results, recheck the ways in 24 hours to make sure they are still level and have not twisted. Re-shim as required.

17. Apply bead of silicone around pedestals, where they contact chip tray, to further reduce possibility of fluids leaking into cabinets. Figure 19. Inserting drawbar into mill headstock.

18. Attach back splash to rear of lathe with (4) 21. Replace drawbar cap over head of drawbar. M6-1 x 10 Phillips head screws and (4) 6mm Do not overtighten. flat washers, as shown in Figure 17. Note: Purpose of drawbar cap is to secure drawbar without restricting its rotation. If necessary, loosen drawbar cap slightly until you can rotate drawbar by hand.

x 4

Figure 17. Locations to secure back splash.

-24- Model G0791 (Mfd. Since 9/15) Anchoring to Floor Leveling

Anchoring machinery to the floor prevents tipping or shifting and reduces vibration that may occur during operation, resulting in a machine that runs For accurate turning results and to prevent slightly quieter and feels more solid. warping cast iron bedways, lathe bedways MUST be leveled from side to side and from If the machine will be installed in a commercial or front to back on both ends. workplace setting, or if it is permanently connected (hardwired) to the power supply, local codes Recheck bedways 24 hours after installation, may require that it be anchored to the floor. two weeks after that, and then annually to make sure they remain level. If not required by any local codes, fastening the machine to the floor is an optional step. If you choose not to do this with your machine, we rec- Leveling machinery helps precision components, ommend placing it on machine mounts, as these such as bedways, remain straight and flat during provide an easy method for leveling and they have the lifespan of the machine. Components on a vibration-absorbing pads. machine that is not level may slowly twist due to the dynamic loads placed on the machine during operation. Anchoring to Concrete Floors Lag shield anchors with lag screws (see below) If needed, use metal shims between the lathe bed are a popular way to anchor machinery to a con- and chip pan when leveling the machine. crete floor, because the anchors sit flush with the floor surface, making it easy to unbolt and move For best results, use a precision level that is at the machine later, if needed. However, anytime least 12" long and sensitive enough to show a local codes apply, you MUST follow the anchoring distinct movement when a 0.003" shim (approxi- methodology specified by the code. mately the thickness of one sheet of standard newspaper) is placed under one end of the level.

See the figure below for an example of a high Lag Screw precision level offered by Grizzly.

Flat Washer Machine Base

Lag Shield Anchor Concrete

Drilled Hole

Figure 20. Popular method for anchoring machinery to a concrete floor. Figure 21. Model H2683 Master Machinist's Level.

Model G0791 (Mfd. Since 9/15) -25- Lubricating Lathe Power Connection

GEARBOXES MUST Electrocution or fire BE FILLED WITH OIL! may occur if machine is ungrounded, incorrectly connected to power, or connected to an undersized LATHE MAY NOT HAVE OIL INCLUDED! circuit. Use an electrician Refer to the Lubrication or a qualified service Section in this Manual personnel to ensure a safe for Recommended Oil Type. power connection.

Before the machine can be connected to the The headstock, quick-change gearbox, and apron power supply, there must be an electrical circuit oil reservoirs must have the proper amount of oil that meets the Circuit Requirements for 220V in them before the lathe can be operated. on Page 16.

Damage caused to the bearings and gears from To minimize the risk of electrocution, fire, or equip- running the lathe without oil in the reservoirs ment damage, installation work and electrical wir- will not be covered under warranty. Refer to the ing MUST be done by an electrician or qualified Lubrication section, beginning on Page 77, for service personnel. checking and adding oil. Note About Extension Cords: Using an incor- In addition to the reservoirs, we also recommend rectly sized extension cord may decrease the life that you lubricate all other points on the machine of electrical components on your machine. Refer at this time. to Extension Cords on Page 17 for more information. Note: If this lathe was shipped with oil in the reservoirs, do not change that oil until after the test run and spindle break-in procedures.

-26- Model G0791 (Mfd. Since 9/15) To connect power cord to machine: 4. Make sure wires have enough slack between strain relief and terminal connections so they 1. Press Emergency Stop/RESET button on are not pulled tight or stretched, then tighten front of headstock, then remove electrical box strain relief to secure cord. cover from back. Note: The strain relief must be tightened 2. Thread power cord through strain relief shown against the outer jacket of the cord. Avoid in Figure 22. over-tightening the strain relief or it may crush the cord and cause a short.

5. Test strain relief to ensure it is properly tightened by pulling cord from outside box with light-to-moderate force. When strain relief is properly tightened, cord will not move inside cabinet.

6. Install NEMA 6-15 plug on other end of power cord per plug manufacturer's instructions.

7. Re-install main electrical box cover. Incoming Power Strain Relief

Figure 22. Location of incoming power strain To avoid unexpected start-up, keep relief. Emergency Stop/RESET button pressed in until instructed otherwise in Test Run. 3. Identify L and N terminals and grounding terminal (PE), illustrated in Figure 23, then connect incoming hot wires and ground wire 8. Plug cord into matching power supply recep- to those terminals. tacle and power source as specified in Circuit Requirements for 220V on Page 16.

Ground

L N PE

To Power Source Figure 23. Incoming power wires connected inside electrical cabinet.

Model G0791 (Mfd. Since 9/15) -27- Test Run To test run machine: 1. Make sure chuck and jaws, if installed, are secure (refer to Chuck Installation on Page Once assembly is complete, test run the machine 34). to ensure it is properly connected to power and safety components are functioning correctly. Note: If chuck is not installed on lathe, you do not need to install one for this test. TheIf you test find run an consistsunusual ofproblem verifying during the following:the test run, 1) TheimmediatelyOnce motor assembly powers stop is the complete, up machine, and runs test disconnect run correctly, the machine it 2) from the 2. Make sure spindle lever is in OFF (center) emergencypower,to ensure and it fix isstop/RESET the properly problem connected BEFORE button safety tooperating power feature andthe position (see Figure 24). worksmachinesafety correctly.components again. The areTroubleshooting functioning correctly. table in the SERVICE section of this manual can help. 3. To ensure carriage components do not unex- If you find an unusual problem during the test run, pectedly move during following steps, disen- immediately stop the machine, disconnect it from gage half nut lever and apron feed selection power, and fix the problem BEFORE operating the lever (see Figure 24). machine again. The Troubleshooting table in the SERVICE section of this manual can help. Half-Nut Lever Spindle Lever is Pulled Up (OFF, Center (Disengaged) Position) Serious injury or death can result from using this machine BEFORE understanding Feed Selection its controls and related safety information. Lever is DO NOT operate, or allow others to operate, Horizontal machine until the information is understood. (Disengaged)

DO NOT start machine until all preceding setup instructions have been performed. Operating an improperly set up machine Cross Slide Disengaged Disengaged may result in malfunction or unexpect- Carriage ed results that can lead to serious injury, Halfnut death, or machine/property damage. Lever Feed Selection Lever Engaged Figure 24. Disengaging carriage components.

4. Rotate Emergency Stop/RESET button clockwise so it pops out. Power lamp on control panel should illuminate.

-28- Model G0791 (Mfd. Since 9/15) 5. Select spindle speed of 70 RPM by mov- — If spindle rotation does start with RESET ing spindle speed levers to B and I (see button pressed in, the Emergency Stop/ Figure 25). RESET button safety feature is not operating correctly. This safety feature 6. Move Mill FWD/REV switch (see Figure 25) must operate properly before continuing to "Mill" position, enabling power to lathe. operation. Use spindle lever to stop lathe, disconnect it from power, and call Tech Support for help. Speed Levers 9. Move spindle lever to OFF (center) position, and reset Emergency Stop/RESET button by twisting it clockwise until it pops out.

10. Set mill spindle speed shift levers to 250 RPM, according to chart on front of mill headstock (see Figure 26).

Note: You must pull each lever out slightly before rotating, then push back in to secure.

Tip: If a shift lever seems stuck or difficult to move, manually rotate the spindle until internal headstock gears mesh, and the lever moves freely.

Figure 25. Lathe headstock controls.

7. Push POWER START button, then move spindle lever (see Figure 24 on Page 28) down to start forward spindle rotation. Top of chuck should turn down and toward front of lathe. Spindle Spindle Speed Speed — When operating correctly, machine will Shift Levers Chart run smoothly with little or no vibration or rubbing noises.

— Investigate and correct strange or unusual noises or vibrations before operating machine further. Always disconnect machine from power when investigating or 250 1100 correcting potential problems.

8. Push Emergency Stop/RESET button to turn lathe OFF, then, without resetting Emergency 530 2300 Stop/RESET button, try to restart spindle rotation, as instructed in Step 7. Spindle Figure 26. Mill spindle speed set to 250 RPM. should not start.

Model G0791 (Mfd. Since 9/15) -29- 11. Move Mill FWD/REV switch (see Figure 25, Page 29) to FWD position. Spindle Break-In

12. Push POWER START button. Mill spindle should begin to rotate. The spindle break-in procedure distributes lubrication throughout the bearings to reduce the risk — When operating correctly, machine will of early bearing failure if there are any "dry" spots run smoothly with little or no vibration or or areas where lubrication has settled in the bear- rubbing noises. ings. You must complete this procedure before placing operational loads on the spindle for the — Investigate and correct strange or unusual first time when the machine is new or if it has noises or vibrations before operating been sitting idle for longer than 6 months. machine further. Always disconnect machine from power when investigating or Always start the spindle break-in at the lowest correcting potential problems. speed to minimize wear if there are dry spots. Allow the spindle to run long enough to warm up 13. Move Mill FWD/REV switch to "Mill" position and distribute the bearing grease, then incremen- (see Figure 25 on Page 29) to turn mill OFF. tally increase spindle speeds and repeat this process at each speed until reaching the maximum 14. Move Mill FWD/REV switch to REV position, spindle speed. Following the break-in procedure repeat Step 12, then push Emergency Stop/ in this progressive manner helps minimize any RESET button to turn mill OFF. potential wear that could occur before lubrication is fully distributed. 15. Without resetting Emergency Stop/RESET button, try to restart spindle rotation, as instructed in Step 12. Spindle should not start. You must complete this procedure to maintain the warranty. Failure to do this could — If spindle rotation does start with RESET cause rapid wear-and-tear of spindle bear- button pressed in, RESET button safety is ings once they are placed under load. not operating correctly. This safety feature must operate properly before continuing To perform spindle break-in: operation. Disconnect machine from power, and call Tech Support for help. 1. Successfully complete Test Run procedure beginning on . Congratulations! The test run is complete. Perform Page 28 the following Spindle Break-In procedure. 2. Run lathe spindle at 70 RPM for 10 minutes in each direction (first forward, then reverse).

3. Turn lathe OFF. Move lathe spindle speed levers to C and 1 for 200 RPM, then run lathe for 5 minutes in each direction.

-30- Model G0791 (Mfd. Since 9/15) 4. Repeat Step 3 for following speeds, pro- gressing from lower to higher RPMs (see Recommended Setting Spindle Speed on Page 51 for more information): Adjustments

• 360 RPM The following adjustments have been made at the • 800 RPM factory. However, because of the many variables • 1400 RPM involved with shipping, we recommend that you at least verify the following adjustments to ensure 5. Press Emergency Stop/RESET button to turn the best possible results from the lathe. lathe OFF. Reset switch. Step-by-step instructions for these adjustments 6. Run mill spindle at 250 RPM for 10 minutes can be found on the pages referenced below. in each direction (first forward and then reverse). Factory adjustments that should be verified: 7. Turn mill OFF to stop spindle rotation. • Tailstock alignment (see Page 41). 8. Repeat Steps 6–7 for following speeds (see • Backlash adjustment (see Page 86). Setting Spindle Speed on Page 51 for more • Gib adjustments (see Page 87). information):

• 530 RPM • 1100 RPM • 2300 RPM

9. Press Emergency Stop/RESET button to turn machine OFF.

Congratulations! The spindle break-in is complete. We recommend changing the headstock and gearbox oil before operating the machine further (refer to Lubrication on Page 77).

DO NOT attempt to change mill spindle speed while spindle is in motion. Doing so can cause catastrophic damage to mill headstock gears and components.

Model G0791 (Mfd. Since 9/15) -31- SECTION 4: LATHE OPERATIONS

To complete a typical lathe operation, the Operation Overview operator does the following:

1. Examines workpiece to make sure it is suit- The purpose of this overview is to provide the nov- able for turning, then securely mounts it in ice machine operator with a basic understanding lathe. of how the machine is used during operation, so the machine controls/components discussed later 2. Installs tooling, aligns it with workpiece, then in this manual are easier to understand. backs it away to establish a safe startup clearance. Due to the generic nature of this overview, it is not intended to be an instructional guide. To learn 3. Removes all setup tools from lathe. more about specific operations, read this entire manual, seek additional training from experienced 4. Checks for safe clearances by rotating machine operators, and do additional research workpiece by hand at least one full revolution. outside of this manual by reading "how-to" books, trade magazines, or websites. 5. Moves slides to where they will be used during operation.

6. Sets correct spindle speed for operation. To reduce your risk of serious injury, read this 7. If using power feed, selects proper feed rate entire manual BEFORE for the operation. using machine. 8. Puts on safety glasses, rolls up sleeves, removes jewelry, and secures any clothing, jewelry, or hair that could get entangled in To reduce risk of eye or face injury from moving parts. flying chips, always wear approved safety glasses and face shield when operating this 9. Resets Emergency Stop/RESET button, then machine. starts spindle rotation. 10. Uses carriage handwheels or power feed options to move tooling into workpiece for operations.

11. When finished cutting, moves spindle lever to OFF position, waits for spindle to completely stop, then removes workpiece. If you are not experienced with this type of machine, WE STRONGLY RECOMMEND that you seek additional training outside of this manual. Read books/magazines or get formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held liable for accidents caused by lack of training.

-32- Model G0791 (Mfd. Since 9/15) Chuck & Faceplate Chuck Safety & Mounting Support Devices

This lathe is equipped with a D1-type spindle Because chucks are heavy and often awkward nose. This type of spindle uses camlocks that are to hold, some kind of lifting, support, or protec- adjusted with a chuck key to securely mount a tive device should be used during installation or chuck or faceplate with repeatable precision and removal. The weight and size of the chuck will ease. determine the appropriate device to use (refer to the following figure for examples).

Never use spindle speeds faster than chuck RPM rating or safe limits of your workpiece. Accidentally dropping a chuck can cause Excessive spindle speeds greatly increase amputation, crushing injuries, or property risk of workpiece or chuck being thrown damage. To reduce this risk, always use from machine with deadly force! some kind of lifting, support, or protective device during installation or removal. This lathe ships with the 3-jaw chuck installed. This is a scroll-type chuck where all three jaws SMALL, LIGHTWEIGHT CHUCKS move in unison when the chuck key is used.

The included 4-jaw chuck features independent Plywood Protection jaws, which are used for square or unevenly- Plate for Chucks Installed by Hand shaped stock, and to mount work that needs to be adjusted to near-zero total indicated runout. MEDIUM-SIZE, HEAVY CHUCKS

Plywood & 2x4 Solid Block The included faceplate has slots for T-bolts that Chuck Cradle Chuck Cradle hold standard or custom clamping hardware. With the correct clamping hardware, a faceplate offers a wide range of uses, including machining non- concentric workpieces, straight turning between Way Slot centers, off-center turning, and boring. Jaw Slot Plywood Chuck Cradle Plywood Chuck Cradle (Straight Cuts) (Curved Cuts)

LARGE, VERY HEAVY CHUCKS

Pre-Threaded Hole Fabricated Steel for Lifting Eye Lifting Hook

Figure 27. Examples of common devices used during chuck installation and removal. Model G0791 (Mfd. Since 9/15) -33- 5. Incrementally tighten camlocks in criss-cross Chuck Installation or star pattern to ensure that chuck seats evenly against spindle.

To ensure accurate work, it is extremely important 6. When chuck is fully seated and all camlocks to make sure the spindle nose and chuck mating are tight, verify that cam line is between the surfaces/tapers are clean. Even a small amount of two "V" marks on spindle nose, as shown in lint or debris can affect accuracy. following figure.

The chuck is properly installed when all camlocks are tight, the spindle and chuck tapers firmly lock together, and the back of the chuck is firmly seated against the face of the spindle all the way around—without any gaps.

To install chuck:

1. DISCONNECT MACHINE FROM POWER!

2. Use appropriate lifting, support, or protective Cam line between "V"s device to protect ways and support chuck Figure 29. Cam line positioned between the "V" during installation process (refer to Chuck marks after the camlocks are fully tightened. Safety & Support Devices). — If cam line is NOT between "V" marks when 3. Clean and lightly oil camlock studs, then thor- camlock is tight, stud may be installed at oughly clean mating surfaces of spindle and incorrect height. To fix this, adjust stud chuck. height as shown in following figure. Make sure to re-install stud cap screw afterward. 4. Install chuck by inserting camlock studs straight into spindle cam holes. — If adjusting stud height does not correct problem, try swapping stud positions on IMPORTANT: Avoid inserting the studs by chuck. pivoting them in from an angle or rotating the spindle. This can damage studs or spindle cam holes.

INCORRECT INCORRECT CORRECT INCORRECT Stud Too High: Stud Too Low: Turn In Turn Out One-Turn One-Turn

Figure 28. Inserting camlock studs into spindle cam holes.

Figure 30. Correcting an improperly installed stud.

-34- Model G0791 (Mfd. Since 9/15) 7. Verify that chuck fits spindle properly by checking for any gaps between mating Chuck Removal surfaces.

— If there is not a gap, proceed to Step 8. To remove chuck:

— If there is a gap, remove chuck, re-clean 1. DISCONNECT MACHINE FROM POWER! mating surfaces carefully, and re-install. If problem persists, contact our Tech 2. Use appropriate lifting, support, or protective Support. device to protect ways and support chuck (refer to Chuck Safety & Support Devices 8. Verify that chuck/spindle tapers are seat- section for more details). ed firmly together by removing chuck, per Chuck Removal instructions on following 3. Loosen camlocks by turning key counter- page, and pay close attention to how easily clockwise until each cam line is aligned with tapers release. its corresponding spindle mark, as shown below. — If it was necessary to bump chuck or use a mallet to release tapers, then they are seating together properly. Cam line and spindle mark aligned

— If tapers released easily with little interven- tion, they are not seated together firmly as required. Remove chuck, re-clean mating surfaces carefully, and re-install. If problem persists, contact our Tech Support.

Registration Marks Lightly stamp registration marks across the mating Figure 32. Camlock is fully loosened when the seams of chuck components. These marks will cam line is aligned with the spindle mark. help you re-install the chuck in the same position after removal, which ensures consistent chuck Tip: Camlocks can become very tight. A balance and turning results, and allows the cheater pipe may be used as a last resort to same camlocks and studs to operate together for add leverage when loosening. After loosen- consistent locking and unlocking. ing, you may need to wiggle the chuck key in the camlock to fully disengage the stud. Spindle & Chuck Camlock Registration Marks 4. Using dead blow hammer or other soft mal- Spindle let, lightly tap around outer circumference of chuck body to loosen it from spindle.

5. Remove chuck from spindle, using light rock- ing motion to carefully slide studs out of cam holes.

— If chuck does not immediately come off, rotate it approximately 60° and tap it Figure 31. Registration mark locations. again. Make sure all marks on cams and spindle are properly aligned for removal.

Model G0791 (Mfd. Since 9/15) -35- Scroll Chuck Chuck Jaw Reversal Clamping This chuck has 2-piece jaws that consist of a reversible top jaw and a master jaw. The top jaw This 3-jaw, scroll-type chuck has an internal scroll- can be removed, rotated 180°, and re-installed in gear that moves all jaws in unison when adjusted the reverse position for additional work-holding with the chuck key. This chuck holds cylindrical options. When reversing the top jaws, always parts on-center with the axis of spindle rotation keep them matched with their original master jaw and can be rotated at high speeds if the workpiece to ensure the best fit. is properly clamped and balanced. To reverse 2-piece jaws: IMPORTANT: Never mix jaw types or positions to accommodate an odd-shaped workpiece. 1. DISCONNECT MACHINE FROM POWER! The chuck will spin out of balance and may throw the workpiece! Instead, use an independent jaw 2. Remove cap screws that secure top jaw to chuck or a faceplate. master (bottom) jaw.

3. Remove top jaw, rotate it 180°, then re-install Safer Inside Insufficient it with longest cap screw in tallest portion of Jaw Clamping Jaw Use Unstable jaw. Workpiece Bar Stock 4. Repeat Steps 2–3 with each remaining jaw (we recommend only reversing one jaw at a time to keep all original parts together). CORRECT INCORRECT Unsafe Jaw Position and Safer Outside Poor Scroll Gear Engagement Jaw Use Poor Grip Short Cap Screw Long Cap Screw

Shallow Unstable Bar Stock Workpiece

CORRECT INCORRECT Rotate Top Unsafe Inside Jaw 180º Safer Outside Jaw Use Jaw Use Master Jaw Poor Scroll Shallow Gear Bar Stock Engagement

Unsafe Jaw Figure 34. Reversing the chuck jaws. CORRECT Position INCORRECT

Safer Inside Unsafe Jaw Position Jaw Use

Cylinder

Poor Scroll CORRECT Gear Engagement INCORRECT Figure 33. Jaw selection and workpiece holding.

-36- Model G0791 (Mfd. Since 9/15) 5. Tighten each jaw in small increments. After 4-Jaw Chuck tightening first jaw, continue tightening remaining jaws in an opposing sequence, similar to sequential order shown below. Refer to the Chuck Installation or Chuck Removal sections for instructions on installing or removing the 4-jaw chuck.

The 4-jaw chuck features independently adjust- 1 3 able jaws for holding non-concentric or off-center workpieces. Each jaw can be independently removed from the chuck body and reversed for a Workpiece wide range of work-holding versatility. Center Point

4 2

Because of dynamic forces involved in machining a non-concentric or off-center Figure 35. 4-jaw tightening sequence. workpiece, always use a low spindle speed to reduce risk of workpiece coming loose and being thrown from lathe, which could 6. After workpiece is secured by jaws, use dial cause death or serious personal injury. indicator to make sure workpiece is centered in chuck.

Mounting Workpiece — If workpiece is not correctly centered, make fine adjustments by slightly loosening 1. DISCONNECT MACHINE FROM POWER! one jaw and tightening opposing jaw until workpiece is correctly positioned (see 2. Use an appropriate device to protect ways below for an example). (refer to Chuck Safety & Support Devices section for more details).

3. Use chuck key to open each jaw so workpiece will fit into spindle opening and lay flat against chuck face and jaw steps.

4. With help from another person or a holding device, position workpiece so it is centered in chuck.

Figure 36. Example of a non-cylindrical workpiece correctly mounted on a 4-jaw chuck.

Model G0791 (Mfd. Since 9/15) -37- To mount a non-concentric workpiece to a Faceplate faceplate:

1. DISCONNECT MACHINE FROM POWER! Refer to the prior Chuck Installation and Chuck Removal subsections for instructions on installing 2. Position appropriate device across bed ways or removing the faceplate. to protect them from any potential damage from workpiece contact during installation. The faceplate included with your lathe can be used for a wide range of operations, including 3. With help from another person or holding machining non-concentric workpieces, straight device to support workpiece, position it onto turning between centers, off-center turning, and faceplate and clamp it in place with a mini- boring. mum of three independent clamping devices (see below for an example). The tools needed for mounting a workpiece will vary depending on the type of setup you have. Be sure to take into account rotational and cutting forces that will be applied to workpiece when clamping it to faceplate. If necessary, use counter-weights to balance assem- Machining non-concentric workpieces at bly and use a dial indicator to make sure high speeds could cause workpiece to be workpiece is properly positioned for your thrown from lathe with deadly force. To operation. reduce this risk, use a low RPM, and use counter-weights to balance faceplate or Non-Cylindrical workpiece. Workpiece

Failure to properly secure workpiece to faceplate could cause workpiece to be thrown from lathe with deadly force. To reduce this risk, use a minimum of THREE independent clamping devices to hold Clamp workpiece onto faceplate. Faceplate

Figure 37. Generic picture of workpiece clamped in a faceplate.

-38- Model G0791 (Mfd. Since 9/15) Quill Handwheel Graduated Dial Tailstock Increments...... 0.001" One Full Revolution...... 0.100"

The tailstock is typically used to support long Increments on Quill workpieces at the side opposite the spindle, using Inch ...... 0"–4 " in 0.100" Increments a live or dead center. It can also hold a tapered drill bit (or a drill chuck with a regular drill bit) for Positioning Tailstock boring holes. Unlike boring done with a drill press where the workpiece is fixed and the drill bit 1. Rotate tailstock lock lever clockwise (facing rotates, the drill bit in a tailstock remains station- machine) to unlock tailstock from bedways. ary while the workpiece is rotated by the spindle. 2. Slide tailstock to desired position by pushing The entire tailstock can be repositioned and it along the bedways. locked in place along the length of the bed. An independently controlled offset adjustment allows 3. Rotate tailstock lock lever counterclockwise the upper part of the tailstock to move perpen- to lock tailstock against bedways. dicular to the bedways so it can be aligned with the spindle center (for concentric turning) or offset Optional: To precisely secure the tailstock, mount 1 from the spindle center (for tapered turning). a ⁄2" drive torque wrench in the square drive shown in Figure 38, then tighten the tailstock to The tailstock quill also features independent 40 lb/ft of torque. The center point will be drawn adjustment controls that allow it to be advanced down as much as 0.006". Do not exceed the max toward the spindle or locked firmly in position. torque or damage to ways and tailstock will occur. Using Quill Quill Lock Tailstock Lock 1. Rotate quill lock lever counterclockwise to Lever Lever loosen quill.

2. Turn quill handwheel clockwise to move quill toward spindle or counterclockwise to move it away from spindle.

3. Rotate quill lock lever clockwise to secure quill. 1 ⁄2" Square Drive Lock-Down Quill Handwheel

Figure 38. Tailstock and quill lock levers in locked position.

Model G0791 (Mfd. Since 9/15) -39- Installing Tooling To install and use tooling in tailstock: This tailstock uses a quill that has a lock slot in the back of the bore that accepts tang arbors and drill 1. With tailstock locked in place, unlock quill, bits (see the Figures below for examples). then use handwheel to extend it approximately 1".

Solid Screw Tang 2. Thoroughly clean and dry tapered mating Open Solid End End surfaces of quill and center, making sure that End End no lint or oil remain on tapers.

Note: If tapered tool shaft has a tang, align it with slot in back of quill before seating it.

3. With a firm and quick motion, insert tool into quill. Check to see if it is firmly seated by attempting to twist it—a firmly seated tool will not twist. Figure 39. Types of tapered arbors and tooling. 4. Unlock tailstock and move it until tip of tool is close to, but not touching workpiece, then Tang relock tailstock.

5. Start spindle rotation, unlock quill lock lever, then turn quill handwheel clockwise to feed tool into workpiece.

Removing Tooling 1. Use shop rag to hold tool.

2. Rotate quill handwheel counterclockwise until tool is forced out of quill.

— If tool does not come loose by retracting quill, extend quill and use drift key in slot shown in Figure below to remove tool. Figure 40. Example photos of inserting tools with tangs into the tailstock.

However, other tooling without tangs, such as the four remaining tools shown previously, can still be used if the potential load will not exceed the strength of the tapered fit. For example, this includes smaller drill chucks, drill bits, and centers. Drift Key Slot Note: If the tooling has an open hole in the end but is too short to be exposed in the drift slot for removal, then a screw can be threaded into the Figure 41. Drift key slot in the side of the quill. end of the tool to provide a solid surface for the quill pin to push against when the quill is retracted for tool removal. Otherwise, removal of such tooling may be difficult.

-40- Model G0791 (Mfd. Since 9/15) Offsetting Tailstock Aligning Tailstock to Spindle The tailstock quill can be offset from the spindle Centerline centerline for turning tapers. Offsetting the quill This is an essential adjustment that should be ver- toward the front of the lathe results in a taper at ified or performed each time the tailstock is used the tailstock end. Conversely, offsetting the quill to turn concentric workpieces between centers toward the back of the lathe results in a taper at or immediately after offsetting the tailstock when the spindle end. turning a taper. If the tailstock is not aligned with the spindle centerline when it is supposed to be, Note: The marks on the offset indicator are arbi- turning results will be inaccurate along the length trary. For a precise offset, use a dial indicator to of the workpiece. check quill movement while adjusting the screws. Items Needed Qty Hex Wrench 4mm...... 1 Adjustment Round Stock 2" x 6"...... 2 Set Screw Precision Level...... 1 (1 of 2) Offset To align tailstock to spindle centerline: Indicator 1. Use precision level to make sure bedway is level from side to side and from front to back.

— If bedway is not level, correct this condition before continuing with this procedure (refer Figure 42. Left offset adjustment. to Leveling section in this manual).

Tools Needed Qty 2. Center drill both ends of a piece of round Hex Wrench 4mm...... 1 stock, then set it aside for use in Step 5.

To offset tailstock: 3. Use another piece of round stock to make a dead center. Turn it to a 60° point, as illus- 1. Loosen tailstock lock to release clamping trated below. pressure on top and bottom castings.

2. Rotate adjustment set screws in opposite directions for desired offset (see below).

Turn Turn Turn Turn CCW CW CW CCW Figure 44. Turning a dead center.

Note: As long as this dead center remains Figure 43. Set screw adjustment in relation to unmoved in the chuck, its point will remain tailstock movement. true to the spindle centerline. However, if the center is removed and later returned to the chuck, the point must be re-turned to once again be true with the spindle centerline.

Model G0791 (Mfd. Since 9/15) -41- 4. Install center in tailstock. 8. Use calipers to measure both ends of workpiece. 5. Attach lathe dog to test stock from Step 2, then mount it between centers, as shown — If test stock is thicker at tailstock end, move 1 below. tailstock toward front of lathe ⁄2 the distance of taper amount, as shown below.

Move tailstock toward 1 front of lathe /2 the amount of taper.

Looking down from above.

Figure 45. Example of stock mounted between centers on a typical lathe. Figure 46. Adjust tailstock toward the operator.

6. Turn 0.010" off stock diameter. — If test stock is thinner at tailstock end, 1 move tailstock toward back of lathe ⁄2 the 7. Mount test or dial indicator so that plunger is distance of taper amount, as shown below. on tailstock quill.

Note: If necessary in the following step, refer Looking down from above. to the Offsetting Tailstock subsection for detailed instructions.

Move tailstock toward 1 back of lathe /2 the amount of taper.

Figure 47. Adjust tailstock away from the operator.

9. Repeat Steps 6–8 until desired accuracy is achieved.

-42- Model G0791 (Mfd. Since 9/15) Live Centers Centers The live center has bearings that allow the center tip and the workpiece to rotate together; it can be Figure 48 shows the MT#3 dead centers and installed in the tailstock quill for higher speeds. live center included with the lathe. In addition, an MT#5–MT#3 tapered spindle sleeve is included Mounting Dead Center in Spindle for mounting in the spindle. 1. DISCONNECT MACHINE FROM POWER!

2. Thoroughly clean and dry all threads and Adapter Dead mating surfaces of spindle bore and center, Sleeve Center Live Center making sure that no lint or oil remains on these surfaces.

Note: This will prevent the tapered surfaces from seizing due to operational pressures, which could make it very difficult to remove the center.

3. Mount chuck or faceplate onto spindle, which- ever is correct for your operation. Carbide-Tipped Dead Center 4. Insert center into tapered spindle sleeve, Figure 48. Adapter sleeve and centers. then insert center into spindle bore.

Dead Centers The Figure below shows an example photo of a dead center installed in spindle, using a A dead center is a one-piece center that, when lathe dog and faceplate for turning between mounted in the tailstock, does not rotate with the centers. workpiece and is used to support long, slender workpieces. Dead Center Use the dead center in the spindle for operations where the workpiece rotates with the center and does not generate friction.

The carbide-tipped dead center can better withstand the effects of friction and is best used in the tailstock where the workpiece will rotate against it. The tip of the center must be generously lubricated during the operation to avoid premature wear and maximize smooth operation. Using low Lathe spindle speeds will also reduce the heat and wear Dog from friction. Figure 49. Example of using a dead center with a faceplate and lathe dog.

Model G0791 (Mfd. Since 9/15) -43- Removing Center from Spindle 3. Use quill handwheel to feed quill out from To remove the sleeve and center from the spindle, casting approximately 1". insert a piece of round bar stock (or similar) through the outside end of the spindle. Have Note: The maximum quill travel is 4", but another person hold onto the sleeve and center we do not recommend extending the quill with a gloved hand or shop rag, then tap the bar more than 2" or stability and accuracy will be stock to knock the sleeve loose. reduced.

Mounting Center in Tailstock 4. Insert center into tailstock quill. Either a carbide-tipped dead center or live center 5. Seat center firmly into quill during workpiece can be used in the tailstock. Mounting instructions installation by rotating quill handwheel clock- are the same for both. The Figure below shows wise to apply pressure with center engaged an example photo of a dead center mounted in a in center hole of workpiece. tailstock. Note: Only apply enough pressure with tailstock quill to securely mount workpiece Carbide-Tipped between centers. Avoid overtightening cen- Dead Center ter against workpiece, or it may become difficult to remove later, and it will result in excessive friction and heat, which may damage workpiece and center.

Removing Center from Tailstock To remove the center from the quill, hold onto it with a gloved hand or shop rag, then rotate the quill handwheel counterclockwise to draw the quill back into the casting until the center releases. Figure 50. Example of using a carbide-tipped dead center installed in the tailstock. If the center does not come loose by retracting the quill, extend the quill to expose the slot shown in the Figure below, then use a drift key to remove the center. To avoid premature wear of dead center or damage to workpiece, use low spindle speeds and keep tip of dead center mounted in tailstock well lubricated.

To mount a center in tailstock:

1. DISCONNECT MACHINE FROM POWER! Drift Key Slot 2. Thoroughly clean and dry tapered mating surfaces of tailstock quill bore and center, making sure no lint or oil remains on tapers. Figure 51. Typical drift key slot in the side of a quill.

-44- Model G0791 (Mfd. Since 9/15) Mounting Workpiece Between Centers Joining Drill Chuck 1. DISCONNECT MACHINE FROM POWER! & Arbor 2. Drill center holes in both ends of workpiece. An arbor is included for the drill chuck that 3. Install dead center in spindle with lathe dog comes with this machine. The following procedure and chuck, faceplate or drive plate, then describes how to install the arbor in the chuck. install live center or carbide-tipped dead center in tailstock. After the arbor is installed in the drill chuck, it is very difficult to separate the assembly. If you 4. Lubricate dead center point and workpiece would like to use a different chuck in the future, center holes, then mount workpiece between we recommend obtaining a new arbor. centers and hold it in place with light pressure from tailstock center. IMPORTANT: DO NOT install the drill chuck and arbor assembly into the spindle until AFTER 5. Seat center firmly into quill by rotating quill the test run. handwheel clockwise to apply pressure against workpiece (see example below). To join drill chuck and arbor:

1. Use acetone or lacquer thinner to clean drill chuck and arbor mating surfaces, especially the bore.

2. Retract chuck jaws completely into chuck.

3. Insert small end of arbor into chuck.

4. Hold assembly by the arbor and tap chuck onto a block of wood with medium force, as illustrated below.

Figure 52. Example of a workpiece mounted between centers on a typical lathe.

Note: Only apply enough pressure to securely mount the workpiece between centers. Avoid over-tightening the center against the workpiece, or it may become difficult to remove later. Also, over-tightening will result in excessive friction and heat, which may damage the workpiece or center.

Figure 53. Tapping drill chuck/arbor on block of wood to seat it.

5. Attempt to separate drill chuck and arbor by hand —if they separate, repeat Steps 3–4.

Model G0791 (Mfd. Since 9/15) -45- 4. Loosen clamp knob that secures the two Steady Rest halves of steady rest and open top portion, as shown in Figure 55.

The steady rest supports long shafts and can be mounted anywhere along the length of the bedway. Familiarize yourself with the steady rest components shown below to better understand the controls before using it.

Tools Needed for Installation/Removal Qty Hex Wrench 3mm...... 1 Open-End Wrench 10mm...... 1 Open-End Wrench 19mm...... 1

Finger Adjustment Knob Figure 55. Workpiece mounted in the steady rest. Set Screw & Jam Nut 5. Loosen jam nuts and set screws so finger roller positions can be adjusted. Finger Roller 6. Use finger adjustment knobs to position bot- Clamp tom two finger rollers against workpiece. Knob Hex Nut 7. Close steady rest, then use finger adjustment knobs to adjust all three finger rollers so that Figure 54. Steady rest components. they just touch the workpiece without causing deflection. To install and use steady rest: Note: The finger rollers should properly sup- 1. DISCONNECT LATHE FROM POWER! port the workpiece along the spindle centerline while still allowing it to freely rotate. 2. Thoroughly clean all mating surfaces, then place steady rest base on bedways so trian- 8. Lock fingers with set screws and jam nuts, gular notch fits over bedway prism. then tighten clamp knob.

3. Position steady rest with base clamp where Note: To reduce the effects of friction, lubri- required to properly support workpiece, then cate the finger rollers with way oil before tighten hex nut shown in Figure 54 to secure operation. it in place.

-46- Model G0791 (Mfd. Since 9/15) Follow Rest Compound Rest

The follow rest mounts to the saddle and supports The compound rest is used to move the tool the workpiece near the cutting tool to prevent toward and away from the workpiece at the preset deflection from the pressure of the cutting tool. angle of the compound rest. The base of the com- The follow rest fingers adjust in the same manner pound rest has graduated scale used for setting as the fingers on the steady rest. the cutting tool to a specific angle.

Tip: To reduce the effects of friction, lubricate the Graduated Dial finger rollers with way oil before operation. Increments...... 0.001" (0.05mm) One Full Revolution...... 0.200" (5mm)

Finger Tool Needed Qty Rollers Wrench 14mm...... 1

To set compound rest at a certain angle:

Cap 1. Loosen two hex nuts at base of compound Screws rest (see Figure 58).

Figure 56. Follow rest attachment. Hex Nuts

Carriage & Slide Angle Locks Scale

The carriage, cross slide, and compound rest have locks (see Figure 57) that can be tightened to provide additional rigidity during operation. Figure 58. Location of angle scale and rotation hex nuts on the compound rest. Tools Needed Qty Hex Wrench 3mm...... 1 Hex Wrench 6mm...... 1

Carriage Lock

Compound Rest Cross Slide Lock Lock

Figure 57. Locations of compound rest, carriage, and cross slide locks.

Model G0791 (Mfd. Since 9/15) -47- 2. Rotate rest to desired angle, as indicated by Tool holders can be quickly loaded and unloaded scale, then retighten the two hex nuts. using the lock lever, and rotated by loosening the 5 top nut. Tools up to ⁄8" can be secured by tighten- Tip: Use an angle gauge to initially set the ing the tool holder set screws. The thumb wheel compound rest at 60° for threading, then rotates to adjust cutting tool height. mark the cross slide at the 0° mark on the scale for future reference (see Figure 59). Installing Tool Tools Needed Qty Angle Gauge Compound Rest Open-End Wrench/Socket 27mm...... 1 Hex Wrench Size 5mm...... 1

To install tool in tool post:

1. Position tool in holder so cutting edge extends just enough to allow tool to cut freely—but no more. The cutting edge must be well supported to ensure good cutting results and Location For avoid chipping. Reference Mark

Figure 59. Using an angle gauge to set compound rest to 60° for threading. Over-extending a cutting tool from the post will increase risk of tool chatter, breakage, or tool loosening during operation, which Tool Post could cause metal pieces to be thrown at the operator or bystanders with great force. DO NOT extend a cutting tool more than 2.5 The quick-change tool post (see Figure below) is times the width of its cross-section (e.g., a 200-series design. 2.5 x 0.5" = 1.25").

Top Nut 2. Secure tool with at least two set screws. Thumb Lock Lever Wheel 3. Adjust cutting tool height to spindle centerline, as instructed in next subsection. Cutting Tool Tool Post Set Screw

Tool Holder

Figure 60. Example of tool mounted in tool post.

-48- Model G0791 (Mfd. Since 9/15) Aligning Cutting Tool with Spindle Tools Needed Qty Centerline Hex Wrench 5mm...... 1 Open-End Wrench/Socket 27mm...... 1 For most operations, the cutting tool tip should be Steel Shims...... As Needed aligned with the spindle centerline, as illustrated Cutting Tool...... 1 below. Fine Ruler...... 1 Tailstock Center...... 1

To align cutting tool with tailstock center: Cutting Spindle 1. Mount cutting tool in tool post, then secure Tool Center post so tool faces tailstock. Line 2. Install center in tailstock, and position center tip near cutting tool tip.

3. Lock tailstock and quill in place.

4. Adjust height of cutting tool so tool tip is aligned vertically with center tip, as illustrated below. Figure 61. Cutting tool aligned with spindle centerline (viewed from tailstock).

There are a number of ways to check and align the cutting tool to the spindle centerline. If necessary, you can raise the cutting tool by placing (Top View) steel shims underneath it. The shims should be as long and as wide as the cutting tool to properly support it. Tailstock Below are two common methods: Center Cutting • Move the tailstock center over the cross slide Tool and use a fine ruler to measure the distance from the surface of the cross slide to the tip Cutting of the center. Adjust the cutting tool height so Tool it is the same distance above the cross slide Tailstock as the tailstock center. Center

• Align the tip of the cutting tool with a tailstock center, as instructed in the following procedure. For this to work, the tailstock must be aligned to the spindle centerline (refer to Aligning Tailstock To Spindle Centerline (Side View) for detailed instructions).

Figure 62. Cutting tool aligned to the tailstock center.

Model G0791 (Mfd. Since 9/15) -49- Spider Manual Feed

This lathe is equipped with a set of outboard The handwheels shown in Figure 64 allow the spindle supports otherwise known as a "spider" operator to manually move the cutting tool. (see Figure 63).

Cross Slide Handwheel Carriage Spider Handwheel Screw Jam Nut

Compound Rest Handwheel

Figure 64. Locations of carriage, cross slide, Figure 63. Spider components. and compound rest handwheels.

Carriage Handwheel Graduated Dial Remove spider screws when not in use. Increments...... 0.01" (0.25mm) Always DISCONNECT LATHE FROM POWER One Full Revolution...... 0.66" (16.76mm) when installing, removing, or adjusting spider screws. Ignoring this warning can lead Use the carriage handwheel to move the carriage to personal injury or machine damage. left or right along the bed.

The spider is especially designed for supporting Cross Slide Handwheel gun barrels during chambering operations; how- Graduated Dial ever, it is a great support option for almost any Increments...... 0.002" (0.05mm) long workpiece that extends through the outboard One Full Revolution...... 0.100" (2.54mm) side of the spindle. Adjust the position of the graduated scale by hold- The tips of the spider screws have brass wear ing the handwheel with one hand and turning the pads that hold the workpiece without causing dial with the other. The cross slide handwheel indents in the finish. has a direct-read graduated dial, which shows the total amount of material removed from the diam- When spider screws are installed, always use the eter of the workpiece. jam nuts to lock each spider screws in position. Merely tightening the spider screws against the Compound Rest Handwheel workpiece and leaving the jam nuts loose is not Graduated Dial safe. Spiders screws that loosen during operation Increments ...... 0.001" (0.03mm) can crash into the end gear cover. One Full Revolution...... 0.100" (2.54mm)

Use this handwheel to move the cutting tool lin- early along the set angle of the compound rest. The compound rest has an indirect-read graduated dial, which shows the actual distance the tool moves.

-50- Model G0791 (Mfd. Since 9/15) Spindle Speed Setting Spindle Speed The alpha and numeric spindle speed levers, shown in Figure 66, are used to select one of the Using the correct spindle speed is important for nine spindle speeds. getting safe and satisfactory results, as well as maximizing tool life. Numeric To set the spindle speed for your operation, you Alpha Lever will need to: 1) Determine the best spindle speed Lever for the cutting task, and 2) Configure the lathe controls to produce the required spindle speed.

Determining Spindle Speed Many variables affect the optimum spindle speed to use for any given operation, but the two most important are the recommended cutting speed for the workpiece material and the diameter of the workpiece, as noted in the formula shown below. Figure 66. Spindle speed levers.

The spindle speed levers control the gear configu- Recommended * Spindle ration in the headstock to produce the selected Cutting Speed (FPM) x 12 spindle speed. = Speed Dia. of Cut (in inches) x 3.14 (RPM)

*Double if using carbide cutting tool To avoid damaging gears, ALWAYS make Figure 65. Spindle speed formula for lathes. sure the spindle is completely stopped BEFORE moving the spindle speed levers. Cutting speed, typically defined in feet per minute (FPM), is the speed at which the edge of a tool The chart below shows the various combinations moves across the material surface. of lever positions for achieving a desired speed. A recommended cutting speed is an ideal speed for cutting a type of material in order to produce Spindle Speed RPM the desired finish and optimize tool life. I II III The books Machinery’s Handbook or Machine Shop Practice, and some internet sites, pro- A 270 1400 800 vide excellent recommendations for which cutting speeds to use when calculating the spindle speed. B 70 360 220 These sources also provide a wealth of additional information about the variables that affect cutting C 200 1000 600 speed and they are a good educational resource.

Also, there are a large number of easy-to-use Figure 67. Spindle speed chart. spindle speed calculators that can be found on the internet. These sources will help you take into account the applicable variables in order to determine the best spindle speed for the operation.

Model G0791 (Mfd. Since 9/15) -51- Configuration Example Figure 68 shows the levers positioned for a Understanding Gear spindle speed of 600 RPM. Charts Note: If the spindle speed levers do not easily adjust into position, rotate the spindle by hand This subsection explains how to understand the while you apply pressure to the lever. When the feed and thread charts on the headstock. If you do gears align, the lever will easily move into place. not understand lathe gear charts, or need a quick If you have trouble rotating the spindle by hand, refresher, read this before configuring the end you can use the spindle key or a chuck key to get gears for power feeding or threading operations. additional leverage—just be sure to remove the key when you are done. Feed & Threading Chart Labels The feed and thread chart labels (see Figure 69) provide information for setting up end gears and Alpha Numeric gearbox levers for threading or non-threading Lever Lever operations. Set to "C" Set to "III"

C I Metric Threading Inch Threading B II Chart Label Chart Label

A III

Spindle Speed RPM Feed Chart I II III Label (On Left Side of A 270 1400 800 End Gear Gearbox Cover) Levers B 70 360 220 Figure 69. Feed and thread charts label. C 200 1000 600 Feed Chart—Displays gearbox dial positions for different speeds of automatic feed (power feed) Figure 68. Setting the spindle speed to 600 used with turning operations (see Figure 70). RPM.

Figure 70. Feed rate chart.

-52- Model G0791 (Mfd. Since 9/15) Metric Threading Chart—Displays headstock How to Read Feed Chart end gear positions used for cutting various metric Figure 73 identifies the forty available metric and threads (see Figure 71). inch feed rates for each longitudinal and trans- verse carriage movement, and shows the end gear positions for feeding.

The end gears for all feeding operations must be arranged as follows (see End Gears on Page 58 for more information):

• 40T gear in the upper position • 86T gear in the middle position • 40T gear in the lower position

End- Gear Setup

Feed Rates

Figure 73. Available feed rates and end gear positions for feeding.

Figure 71. Metric threading chart.

Inch Threading Chart—Displays headstock end gear and gearbox lever positions used for cutting various inch threads (see Figure 72).

40T

86T

40T

Figure 72. Inch threading chart.

Model G0791 (Mfd. Since 9/15) -53- Figure 74 indicates that for a longitudinal feed How to Read Metric Threading Chart rate of 0.0096 in/rev., the alpha feed lever must Figure 76 indicates the gearbox lever and end be set to "B", and the numeric feed lever set to "7" gear positions, and available pitches, for metric (see Figure 75). threading.

Alpha Feed Numeric Feed Lever Set to B Lever Set to 7 Numeric Lever Positions

Metric Longitudinal Feed Rate Thread Feed Icon .0096 in/rev. Pitches

Figure 74. Reading feed chart.

Alpha Lever Numeric Lever Alpha Set to B Set to 7 End Gear Lever Positions Positions Figure 76. Location of gearbox lever and end gear positions on metric threading chart.

Figure 77 shows how the gearing illustrations in the thread chart relate to the end gears.

Figure 75. Feed levers set to "B" and "7" for 0.0096 in/rev. longitudinal feed rate.

Figure 77. Power feed gearing setup.

-54- Model G0791 (Mfd. Since 9/15) How to Read Inch Threading Chart Figure 78 indicates the gearbox lever and end Power Feed gear positions and available TPI for inch threading. Both the carriage and cross slide have power feed The end gears for all inch threading operations capability when the carriage is engaged with the must be arranged as follows (see End Gears on feed rod. The rate that these components move Page 58 for more information): per revolution of the feed rod is controlled by the quick-change gearbox lever positions and the end • 40T gear in upper "F" position gear configuration. • 86T/91T gear in middle position, with 86T gear mounted toward lathe The feed per revolution and the spindle speed • 40T gear in lower "G", inside position must be considered together—this is the feed rate. The sources you use to determine the opti- End Gear Positions Numeric Lever Positions mum spindle speed for an operation will also provide the optimal feed to use with that spindle 40T speed.

Often, the experienced machinist will use the 86T feeds and speeds given in their reference charts or web calculators as a starting point, then make 40T minor adjustments to the feed rate (and sometimes spindle speed) to achieve the best results.

Alpha Lever The carriage can alternately be driven by the Positions Threads Per Inch leadscrew for threading operations. However, this section only covers the use of the power feed Figure 78. Location of gearbox lever and end option for the carriage and cross slide compo- gear positions on inch threading chart. nents for non-threading operations. To learn how to power the carriage for threading operations, refer to Threading on Page 61.

If feed selection lever and half nut are engaged at the same time, machine damage could occur. Even though there is a lockout device to prevent this, it could break if forced.

Model G0791 (Mfd. Since 9/15) -55- To avoid damaging lathe, spindle MUST be completely stopped BEFORE using power feed controls to make changes.

Power Feed Controls Use Figures 79–80 and the following descrip- tions to understand the power feed controls.

Note: Before using power feed, you may have to D reconfigure the end gears, depending on how they Figure 80. Apron feed selection lever. are set up. Refer to End Gears on Page 58 for detailed instructions. A. Feed Direction Lever: Selects the direction for power feed. When the lever is positioned The lathe comes from the factory with the end as shown in Figure 79, the carriage will move gears set up in the power feed configuration. to the left along the bed, or the cross feed will travel toward the rear of the lathe.

A B. Headstock Feed Selection Lever: Selects the leadscrew or feed rod for powered rotation. The center position is neutral and neither will move.

C. Quick-Change Gearbox Levers: Select the rate of power feed.

D. Apron Feed Selection Lever: Changes the power feed to either the carriage or cross B slide. When the lever is down and the indent pin C is pointing up, the cross slide is selected. Conversely, when the lever is up and the pin is pointing down, the carriage is selected.

In the middle position, the apron gears are disengaged from the feed rod and neither component will move. Figure 79. Headstock and quick-change gearbox controls for power feed. Note: When using this lever, you may need to slightly rotate the handwheel of the component you are trying to engage, so that the apron gears can mesh.

-56- Model G0791 (Mfd. Since 9/15) Setting Power Feed Rate 2. Locate box in chart that lists a feed rate of 0.0021" in./rev. for cross slide (see Figure 82). The power feed rate chart in Figure 81 (also located on the end gear cover) displays the end gear and quick-change gearbox lever settings for Setting for Gearbox Levers available feed rates.

Feed Rate Figure 82. 0.0021 in./rev feed rate displayed in chart. NOTICE To prevent damage to gearbox components, NEVER move levers while lathe is running, and NEVER force any lever when shifting. If lever will not engage, rotate chuck by hand while keeping light pressure on lever. As chuck rotates it aligns gears and lever will engage.

3. Position lever pins in gearbox holes indicated Figure 81. Feed rate chart. on chart.

This symbol indicates longitudinal feed. — Pull knurled knob out to release lever pin This symbol indicates cross feed rates. from hole.

— Lower lever below gearbox and slide it Using the controls on the lathe, follow along with directly under desired hole. the example below to better understand how to set the lathe for the desired power feed rate. — While pulling knurled knob out, raise lever so that pin is directly over hole, then Setting Cross Slide Power Feed Rate of 0.0021 release knob to seat pin (see Figure 83 for in./rev. an example).

1. Make sure end gears are set up as displayed on left side of chart (refer to End Gears on Page 58 for detailed instructions).

Note: The top half of the chart displays feed rates in mm/rev., while the bottom half displays feed rates in in./rev.

Figure 83. Example of gearbox lever pins seated in holes.

Model G0791 (Mfd. Since 9/15) -57- 4. Move headstock feed selection lever to left— Primary Metric Threading this selects feed rod rotation. Configuration This configuration is used for most metric thread- 5. Use headstock feed direction lever to select ing. Mesh the "F" position gear with the 91T direction of cross feed travel. change gear, and mesh the 86T change gear with the "G" position gear in the "outside" position, as When this lever is to right, cross slide will shown in Figure 85. travel away from operator; conversely, when lever is to left, cross slide will travel toward operator.

6. Push apron feed selection lever toward spindle, then shift it down to select cross slide for power feed.

End Gears

This section explains how to configure end gears for feeding and threading operations.

Power Feed & Inch Threading Configuration The end gear configuration shown in Figure 84 is the same for all power feed and inch threading operations. Figure 85. Primary metric threading end gear configuration. 86T Gear: Toward Lathe 40T Gear: F Position

40T Gear: Inside G Position

Figure 84. End gear configuration for power feeding and inch threading.

Mesh the 40T "F" position gear with the 86T change gear, and mesh it with the 40T "G" position gear in the "inside" position.

-58- Model G0791 (Mfd. Since 9/15) Secondary Metric Threading End-Gear Configuration Example Configuration Follow the example below to better understand This configuration is used for some metric thread- how to configure the end gears for metric threading. Use the 26T gear in the "F" position; orient ing. the 86T/91T change gear in any position, and use the 60T gear in the inside "G" position, as shown Tools Needed Qty in Figure 86. Hex Wrench 3mm...... 1 Hex Wrench 5mm...... 1 Wrench or Socket 17mm...... 1

To configure end gears for 2.25 metric thread pitch:

1. DISCONNECT MACHINE FROM POWER!

2. Remove end gear cover.

3. Locate 2.25 on metric thread chart, then locate 45T "F" position gear and 60T "G" position gears in "F" and "G" gear columns, and note position of 86T/91T change gear (see Figure 87).

"F" and "G" Gear Columns

Figure 86. Secondary metric threading end gear configuration. 86T/91T Change Gear With 91T Gear Toward Lathe

45T Gear In "F" Position

2.25 Metric Thread Pitch

60T Gear In "G" Position

Figure 87. Configuring end gears for 2.25 metric thread pitch.

Model G0791 (Mfd. Since 9/15) -59- 4. While holding middle 86T/91T gear assembly 6. Replace F gear with 45T gear, and G gear (see Figure 88), loosen support arm hex nut with 60T gear. and slowly let assembly pivot down. Note: The 60T gear (and 40T gear) used as the G gear has a stepped face that allows it F Gear to mesh with either the outside or inside teeth Middle Gear of the middle gear, depending upon the con- 86T/91T Hex Nut figuration needed. Gear 7. Secure F and G gears with fasteners, but do not overtighten. The fasteners merely keep them in place and overtightening may hinder rotation. Support Arm G Gear Hex Nut 8. Re-install 86T/91T middle gear with 91T gear toward lathe, and slide it against G gear until it meshes with a 0.002"–0.004" backlash, Figure 88. End gear components. then tighten middle gear hex nut.

5. Remove 86T/91T middle gear, then F and G 9. Pivot middle gear up against F gear until it gears. meshes with same backlash, then tighten support arm hex nut. Note: Make sure the keys stay inserted in the shafts as you slide the F and G gears off. 10. Re-install end gear cover.

-60- Model G0791 (Mfd. Since 9/15) 3. Locate 11 TPI and lever positions "B" and "5" Threading on chart (see Figure 89).

4. Position gearbox lever pins in gearbox holes The following subsections will describe how to indicated on chart—B and 5. use the threading controls and charts to set up the lathe for a threading operation. If you are unfamil- — Pull knurled knob out to release lever pin iar with the process of cutting threads on a lathe, from hole. we strongly recommend that you read books, review industry trade magazines, or get formal — Lower lever below gearbox and slide it training before attempting any threading projects. directly under desired hole.

Headstock Threading Controls — While pulling knurled knob out, raise lever The threading charts on the headstock face dis- so that pin is directly over hole, then play the settings for inch and metric threading. release knob to seat pin. 5. Move headstock feed selection to left for Using the controls on the lathe, follow the exam- leadscrew rotation. ple below to understand how to set up the lathe for the desired threading operation. Apron Threading Controls To set up for a thread pitch of 11 TPI: The half nut lever engages the carriage with the leadscrew, which moves the carriage and cutting 1. DISCONNECT MACHINE FROM POWER! tool along the length of the workpiece for threading operations (see Figure 90). 2. Install end gears as directed on inch thread chart (see Figure 89 or the chart on gear- Important: Make sure the feed selection lever box). is in the disengaged (center) position before attempting to engage the half nut. End Gear Position 11 TPI Position Configuration "B" "5" Feed Selection Half Nut 40T Lever Lever

86T

40T

Cross Slide Disengaged Disengaged Carriage Halfnut Lever Feed Selection Lever Engaged Figure 90. Apron threading controls.

Figure 89. End gear and gearbox lever configuration for 11 TPI.

Model G0791 (Mfd. Since 9/15) -61- Thread Dial Thread Dial Chart Tools Needed Qty The thread dial chart is located on the headstock, Hex Wrench 5mm...... 1 as shown in Figure 92.

The numbers on the thread dial are used with the thread dial chart to show when to engage the half Thread Dial nut during inch threading. Loosen the cap screw Chart on the thread dial (see Figure 91), pivot the gear teeth so they mesh with the leadscrew threads, then retighten the cap screw.

Important: The thread dial is not used for metric threading. For metric threading, you must leave the half nut engaged, stop the spindle at the end of each cut, retract the tool one full turn of the cross slide, then run the lathe in reverse to reposi- tion tool to the start of the threads. Figure 92. Location of thread dial chart. Note: As a basic rule of thumb, you can always cut any thread (other than metric or 4.75 TPI, by Find the TPI (threads per inch) that you want to cut starting on the number 1 of the thread dial. in the left columns (under TPI), then reference the dial number in the right columns (under Scale). The dial numbers indicate when to engage the half nut for a specific thread pitch as indicated by the thread dial chart (see Figure 93). Thread Dial INDICATOR TABLE TPISCALE TPISCALE TPI SCALE 4 1–8 13 1, 3 44 1–8 4.5 1 14 1-2-3-4 48 1–8 Cap Screw 4.75 1 16 1–8 52 1–8 5 1, 3 18 1-2-3-4 56 1–8 Figure 91. Thread dial engaged with the leadscrew. 5.5 1 19 1, 3 64 1–8 6 1-2-3-4 20 1–8 72 1–8 6.5 1 22 1-2-3-4 76 1–8 7 1, 3 24 1–8 80 1–8 When threading, we recommend using slowest speed possible and avoiding deep cuts, 8 1–8 26 1-2-3-4 88 1–8 so you are able to disengage half nut when 9 1, 3 28 1–8 96 1–8 required and prevent an apron crash! 9.5 1 32 1–8 104 1–8 10 1-2-3-4 36 1–8 112 1–8 When the first thread cutting pass is complete, the operator disengages the carriage from the 11 1, 3 38 1-2-3-4 leadscrew using the half nut lever. The operator 12 1–8 40 1–8 returns the carriage for the next pass and re- engages the half nut using the same thread dial Figure 93. Thread dial chart. setting to resume the cut as in the previous pass.

-62- Model G0791 (Mfd. Since 9/15) 3

SCALE 2 4

ALL 1

3 SCALE 2 3 4

SCALE 2 N 4 1 The followingSCALE examples explain2 how to use Fractional TPI: For threading a fractional TPI with

1–8 4 the thread dialALL and the thread1 dial chart. a half number (4.5, 5.5, 6.5, 9.5), only use the 1 1 line on the thread dial (see the example in Figure Even TPI: For threading an even number TPI, 96). use any numbered line on the thread dial (see the

example in Figure 94). 3

SCALE 2

SCALE 3 4 3 1 1–8 2 1 4

SCALE& 2 1 4 1-2-3-4N 1 Figure 96. 1 line on dial for threading fractional TPI.

Figure 94. Any numbered line on dial for threading even TPI. Important: For cutting 4.75 TPI,3 proceed as though cutting a metric thread and do not disen- SCALE 2

Note: For TPI divisible by 4, this rule still applies. gage the half nut until the threading4 operation is

3 complete. Stop1, 3the spindle at the1 end of each cut, The Indicator Table on the lathe shows3 that lines

1–8 may beSCALE used, which means2 that lines 1–4 and retract the cutting tool, and reverse the spindle to 4 SCALE 2 return the cutting tool to the start of the thread.

any of the half marks may be used. 4 1 1 1 1 Odd TPI: For threading an odd number TPI, use

any pair of opposite numbers or marks on the thread dial (see the example in Figure 95). 3

SCALE 2

3 3 ANY 1

SCALE 2 4 SCALE 2 1, 3 1 4 1, 3 1

Figure 95. 1 or 3 line on dial for threading odd

TPI.

3 3

SCALE 2 4 SCALE 2 ANY 1 4 ANY 1

Model G0791 (Mfd. Since 9/15) -63- SECTION 5: MILL OPERATIONS

Operation Overview To reduce risk of injury and increase The purpose of this overview is to provide the nov- longevity of machine, always start spindle ice machine operator with a basic understanding rotation with spindle speed dial set to low- of how the machine is used during operation, so est setting. the machine controls/components discussed later in this manual are easier to understand. To complete a typical operation, the operator does the following: Due to the generic nature of this overview, it is not intended to be an instructional guide. To learn 1. Examines workpiece to make sure it is suit- more about specific operations, read this entire able for cutting. manual, seek additional training from experienced machine operators, and do additional research 2. Securely clamps workpiece to table. outside of this manual by reading "how-to" books, trade magazines, or websites. 3. With machine disconnected from power, installs correct cutting tool.

4. Adjusts headstock height above table. To reduce your risk of serious injury, read this 5. Checks range of table or spindle movement entire manual BEFORE necessary for operation to make sure setup is using machine. safe and correct.

6. Selects correct spindle speed and rotation direction. To reduce risk of eye or face injury from 7. Puts on required safety glasses and face flying chips, always wear approved safety shield. glasses and face shield when operating this machine. 8. Connects machine to power and turns it ON.

9. Uses downfeed controls or cross slide table controls to perform cutting operation.

10. Turns machine OFF and waits for spindle to completely stop before removing workpiece.

If you are not experienced with this type of machine, WE STRONGLY RECOMMEND that you seek additional training outside of this manual. Read books/magazines or get formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held liable for accidents caused by lack of training.

-64- Model G0791 (Mfd. Since 9/15) Re-installing Compound Rest Removing 1. Re-install one T-bolt, with flat washer and hex Compound Rest nut, into rear T-slot, as shown in Figure 99.

The compound rest and tool post must be removed before milling operations so the cross-slide table can be used as the milling table. x 1 Tool Needed Qty Open-End Wrench 14mm...... 1

Removing Compound Rest 1. Loosen both hex nuts shown in Figure 97, then slide T-bolt out of first compound rest slot. Figure 99. T-Bolt installed in rear T-slot.

2. Align compound rest with cross slide table, and insert T-bolt from Step 1 into rear slot of compound rest.

3. Re-install second T-bolt with flat washer and hex nut into T-slot and front slot of compound rest, slide compound rest to desired position, x 2 then tighten both hex nuts (see Figure 100).

Front Slot Figure 97. Location of compound rest hex nuts and flat washers.

2. Remove compound rest, then remove second T-bolt from rear T-slot in cross-slide table (see Figure 98).

T-Slot Cross Slide T-Slots x 1 Table With T-Bolts Removed Figure 100. Compound rest installed.

Figure 98. Compound rest and T-bolts removed.

Model G0791 (Mfd. Since 9/15) -65- Downfeed Controls Coarse Downfeed Coarse downfeed is typically used for drilling applications. Loosen the quill lock bolt, pull out Identification the down feed selector knob, then rotate either of the coarse downfeed handles (see Figure 101) to lower the spindle. An internal coil spring helps raise the spindle back to the top position A C when you stop applying downward pressure on the handle. Spindle travel is shown on the depth B scale, and is limited by the depth pointer when the scale lock knob is secured.

Note: To maintain control of the upward spindle travel and the rotating bit in your workpiece, always continue holding the handle until the spindle returns to the top position. Letting go of the coarse downfeed handles when the spindle is in the lowered position will cause the spindle to retract too quickly and slam up into the headstock F E D or lift the workpiece and cause it to spin out of Figure 101. Downfeed controls. control.

A. Quill Lock Bolt The coarse downfeed hub features a graduated dial that measures spindle movement in 0.02" B. Depth Scale Lock Knob increments, with one full revolution equaling 2.40" of spindle travel. C. Coarse Downfeed Handles Fine Downfeed D. Downfeed Selector Knob Fine downfeed is typically used for milling applications, because the spindle only moves up or E. Depth Pointer and Scale down when the fine downfeed handwheel (see Figure 101) is rotated (there is no automatic spin- F. Fine Downfeed Handwheel dle return to the top position, as with the coarse downfeed controls). This allows the spindle height to be locked in place for precise Z-axis positioning of a cutter or end-mill when milling a flat surface across the face of a workpiece. In order to ensure the milled surface remains flat, the spindle height cannot move until the entire milling operation is complete.

The fine downfeed graduated dial measures spindle movement in 0.002" increments, with one full revolution equaling 0.092" of spindle travel.

-66- Model G0791 (Mfd. Since 9/15) Engaging Fine Downfeed Controls Headstock In the following example, the fine downfeed controls are used to mill 0.010" off a workpiece: Movement Tool Needed Qty Open-End Wrench 13mm...... 1 The milling headstock travels up and down the column (Z-axis) and tilts 90° left or right relative 1. Loosen Z-axis lock bolts, use vertical travel to the table. handwheel (see Figure 102 on this page) to adjust cutting tool just above workpiece sur- Tool Needed Qty face, then secure headstock with Z-axis lock Open-End Wrench 13mm...... 1 bolts. Raising/Lowering Headstock 2. Loosen quill lock bolt (see Figure 101 on 1. Loosen two Z-axis lock bolts on right side of Page 66). headstock (see Figure 102). 3. Push downfeed selector knob (see Figure 2. Use Z-axis handwheel shown in Figure 102 101 on Page 66) all the way in to engage fine to adjust headstock height and relative posi- downfeed handwheel. tion of cutting tool before cutting. 4. Loosen depth scale lock knob. Note: Rotate the Z-axis handwheel clockwise to raise the headstock, or counterclockwise 5. Rotate fine downfeed handwheel clockwise to lower it. and lower cutting tool so it just touches workpiece. Vertical Travel 6. Move workpiece out of the way. Handwheel 7. Using graduated dial to gauge spindle movement, rotate fine downfeed handwheel clockwise 0.010". Z-Axis Lock Bolts (1 of 2) 8. Tighten quill lock bolt.

9. Turn mill/drill ON and perform cutting pass.

Figure 102. Mill Z-axis controls.

3. Re-tighten Z-axis lock bolts.

Model G0791 (Mfd. Since 9/15) -67- Tilting Headstock These movements are controlled by the car- Have another person support the headstock by riage handwheel and cross slide handwheel (see hand during Steps 2–3 to prevent headstock from Figure 105). slipping out of control while tilting it. Cross Slide Tool Needed Qty Table Wrench 17mm...... 1 Cross Slide Handwheel To tilt headstock: (Y-Axis)

1. DISCONNECT MACHINE FROM POWER!

2. With someone supporting headstock by hand, Carriage loosen two tilt locking nuts on each side of Handwheel mill headstock (see Figure 103). (X-Axis)

3. While viewing tilt scale (see Figure 103), Figure 105. Table travel controls. rotate headstock to required angle, then retighten locking nuts to secure headstock. Carriage Handwheel (X-Axis) Graduated Dial Locking Nut Increments...... 0.010" (0.25mm) (1 of 2) One Full Revolution...... 0.670" (17.02mm)

Tilt Use the carriage handwheel to move the carriage Scale left or right along the bed. Adjust the position of the graduated scale by holding the handwheel with one hand and turning the dial with the other.

Cross Slide Handwheel (Y-Axis) Graduated Dial Increments...... 0.002" (0.05mm) One Full Revolution...... 0.2" (5.08mm) Figure 103. Location of tilt locking nut and tilt scale. Use this handwheel to move the cross slide table toward or away from the tooling. The cross slide handwheel is graduated to read diameter chang- Table Travel es when turning a shaft. Divide the increments by 2 to determine how far the slide has travelled.

The cross slide table travels in the X-axis (longitudinal), and the Y-axis (cross) directions, as illustrated in Figure 104.

X-Axis or Longitudinal Travel (Left & Right)

Y-Axis or Cross Travel (In & Out)

Figure 104. Cross slide travel directions. -68- Model G0791 (Mfd. Since 9/15) Installing/Removing Installing Tooling Tools Needed Qty Tooling Wrench 10mm...... 1 Spindle Locking Pin (Not Included)...... 1

This machine features a spindle that accepts R-8 To install tooling: collets and arbors. It can also use MT#3 or MT#2 tooling with the included adapter sleeves. 1. DISCONNECT MACHINE FROM POWER!

The Model G0791 includes the following spindle 2. Verify drawbar is installed correctly (refer to tools (see Figure 106): Page 24).

A. B16 Drill Chuck w/R-8 Arbor. Refer to 3. Align tool alignment slot (see Figure 106) Joining Drill Chuck & Arbor on Page 45. with pin inside spindle, then insert tooling into spindle until it contacts drawbar. B. R-8–MT#3 Spindle Sleeve. Used for MT#3 tools and will accommodate tools with a tang. 4. Thread drawbar into tooling by hand until It also has a drift key slot for tool removal. snug (see Figure 107).

C. MT#3–MT#2 Spindle Sleeve. Used with the R-8–MT#3 spindle sleeve for MT#2 tools.

Alignment Slot

B Figure 107. Threading drawbar into tooling.

Figure 106. Drill chuck, arbor, and spindle sleeves included with Model G0791.

Cutting tools are sharp and can easily cause cutting injuries. Always protect your hands with leather gloves or shop rags when handling cutting tools.

Model G0791 (Mfd. Since 9/15) -69- 5. Set spindle speed to 250 RPM (see Setting Removing Tooling Spindle Speed on Page 51) to prevent spin- Tools Needed Qty dle rotation while tightening drawbar, then Wrench 10mm...... 1 use 10mm wrench to tighten drawbar. Spindle Locking Pin (Not Included)...... 1 Brass Head or Deadblow Hammer —If necessary, you can insert a tool into hole (Not Included)...... 1 on side of spindle to provide additional rotational resistance (see Figure 108). To remove tooling:

Note: Do not overtighten drawbar. 1. DISCONNECT MACHINE FROM POWER! Overtightening makes tool removal difficult and may damage arbor and threads. 2. Set spindle speed to 250 RPM (see Setting Spindle Speed on Page 51) to prevent spindle rotation while tightening drawbar, then tighten drawbar.

—If necessary, you can insert a tool into hole on side of spindle to provide additional rotational resistance (see Figure 108).

3. Unthread drawbar from tooling one full rotation.

Note: Do not fully unthread tooling from Tool Inserted drawbar or the drawbar and tool threads Into Spindle could be damaged in the next step.

Figure 108. Using tool to lock spindle while 4. Tap top of drawbar with hammer to unseat tightening drawbar. taper (see Figure 109).

Figure 109. Example of tapping drawbar to unseat tool taper.

5. Hold onto tooling with one hand and fully unthread drawbar.

-70- Model G0791 (Mfd. Since 9/15) Setting Spindle Speed Spindle Speed 1. Set Mill FWD/REV switch to desired direction for milling operations (see Figure 111). Using the correct spindle speed is important for safe and satisfactory results, as well as maximizing tool life.

To set the mill spindle speed for operation, you will need to: 1) Determine the best spindle speed for the cutting/drilling task, and 2) use the spindle speed shift levers to obtain the spindle speed. Mill FWD/REV Switch Determining Spindle Speed Many variables affect the optimum spindle speed to use for any given operation, but the two most important are the recommended cutting speed for the workpiece material and the diameter of Figure 111. Location of Mill FWD/REV switch. the cutting tool, as noted in the formula shown in Figure 110. 2. Move spindle speed shift levers, according to spindle speed chart (see Figure 112), to select between 250, 530, 1100, or 2300 *Recommended RPM. Figure 112 illustrates spindle speed Cutting Speed (FPM) x 12 Spindle set at 250 RPM. = Speed Tool Dia. (in inches) x 3.14 (RPM)

*Double if using carbide cutting tool Figure 110. Spindle speed formula for mill/drills.

Cutting speed, typically defined in feet per minute (FPM), is the speed at which the edge of a tool moves across the material surface. Spindle Speed A recommended cutting speed is an ideal speed Spindle Speed Chart for cutting a type of material in order to produce Shift Levers the desired finish and optimize tool life.

The books Machinery’s Handbook or Machine Shop Practice, and some internet sites, provide excellent recommendations for which cutting speeds to use when calculating the spindle speed. These sources also provide a wealth of additional 250 1100 information about the variables that affect cutting speed and they are a good educational resource.

Also, there are a large number of easy-to-use 530 2300 spindle speed calculators that can be found on the internet. These sources will help you take into Figure 112. Mill spindle speed controls set for account the applicable variables in order to deter- 250 RPM. mine the best spindle speed for the operation.

Model G0791 (Mfd. Since 9/15) -71- ACCESSORIES SECTION 6: ACCESSORIES

T25250—58 pc. Clamping Kit 5/16"-18, 3/8" T-Slot Installing unapproved accessories may Our Clamping Kits are among the best in the cause machine to malfunction, resulting in world! All the blocks, bolts, nuts and hold-downs serious personal injury or machine damage. are case hardened. Each clamping kit includes: To reduce this risk, only install accessories (24) studs (four studs each: 3", 4", 5", 6", 7", and recommended for this machine by Grizzly. 8" long), (6) step block pairs, (6) T-nuts, (6) flange nuts, (4) coupling nuts, and (6) end hold-downs. The Model T25250 set fits 3/8" T-slots and includes 5/16"-18 studs. Racks can be bolted to NOTICE the wall or side of machine for easy access. Refer to our website or latest catalog for additional recommended accessories.

T10556—Taper Attachment Kit for G0791 This taper attachment provides precision outside and inside tapers up to 12" without having to offset the tailstock. Can be used without disengaging the cross slide, allowing the taper attachment to be functional at any time by simply tightening the bed clamp bracket, and will not interfere with other turning operations. This taper attachment features scales at both ends, reading inches-of- Figure 114. T25250 58 pc Clamping Kit 5/16"- taper per foot and angle of taper. An adjustment 18, 3/8" T-Slot. knob with fine threads achieves precise control when setting tapers. G5942—Extra Tool Holder For Quick Change Tool Post Set a variety of tool bits and drop in for a quick change over.

Figure 113. T10556 Taper Attachment Kit for G0791.

Figure 115. G5942 Extra Tool Holder For Quick Change Tool Post.

order online at www.grizzly.com or call 1-800-523-4777

-72- Model G0791 (Mfd. Since 9/15) G1238—15 pc. Precision 5-C Collets Set T24512—6-Pc. HSS Center Drill Set Made from high grade collet steel and precision HSS double-ended, 60° center drills are preci- ground to exacting tolerances. Complete 15 pc. sion-ground. Set includes: 1 set. Includes: 1/8" thru 1" in 1/16" increments. • 1 each of size #1, body diameter ⁄8", drill 3 1 diameter ⁄64", overall length 1 ⁄2" 3 • 2 each of size #2, body diameter ⁄16", drill 5 7 diameter ⁄64", overall length 1 ⁄8" 1 • 2 each of size #3, body diameter ⁄4", drill 7 diameter ⁄64", overall length 2" 5 • 1 each of size #4, body diameter ⁄16", drill 1 1 diameter ⁄8", overall length 2 ⁄8"

Figure 116. G1238 15 pc. Precision 5-C Collets Set.

T10719—Crown Savers for .17 to .45 Caliber Barrels (10 Pk.) T10720—Crown Savers for .50 Caliber Barrels (3 Pk.) With crown savers you never have to recrown the barrel when installing muzzle brakes or doing any job requiring a center in the end of the barrel crown. Figure 118. T24512 6-Piece Center Drill Set.

G7154—Premium Milling Vise-5" G7156—Premium Milling Vise-4" These swiveling milling vises feature perfectly aligned, precision-ground jaws, robust clamping screws, and easy-to-read 0°–360° scales.

Figure 117. T10720 Crown Savers.

Figure 119. Premium milling vises.

order online at www.grizzly.com or call 1-800-523-4777

Model G0791 (Mfd. Since 9/15) -73- G1646—12 pc. Precision R-8 Collet Set T10118—Tailstock Digital Readout Made from the highest grade steel available for Here’s the slickest setup for managing the depth collet manufactures, these collets are precision of cut with your tailstock! Just set up, touch off and ground to very close tolerances. Complete 12 zero out! You’re going to know the exact position 1 3 1 piece set. Includes: ⁄8" thru ⁄4" in ⁄16" increments of the tool. Both the scale display and remote 7 plus ⁄8". display come with a 0.0005" (five ten-thousandths of an inch) resolution, inch or millimeter display, zero keys and ON/OFF keys. The scale has an 8" range and its display features ABS or INC mode as well as a Hold key. Both displays read independently of each other, too! You’ll be able to see your 1 depth at a glance with the large, ⁄2" character remote display. The 6' data cable is long enough to mount the remote display in almost any convenient location. Tailstock adapter is not included, Figure 120. G1646 12 pc. Precision R-8 Collet but can be shop made to fit your lathe. Set.

T10665—Adjustable Reamer Holder MT#3 This Pacific Tool and Gauge Adjustable Reamer Holder secures a barrel chambering reamer in the holder for free floating reamer movement. A knurled wheel adjustment controls the amount of tension, which also limits free-floating movement.

Figure 123. T10118 Tailstock Digital Readout.

T24798—Angle Plate Set, 2 pc. Made of hardened, ground steel these angle blocks provide accuracy within seconds, making them a must have for any metal shop. One piece Figure 121. T10665 PTG Reamer Holder MT#3. 3 is 3" x 3" x 4 ⁄8" with two 45° and 90° angles. The 3 other piece is 4" x 3 ⁄8" x 2" with 30°, 60°, and 90° T10667—Bald Eagle Reamer Holder MT#3 angles, making it perfect for setting your com- This holder is designed to allow free movement pound rest to 60° for threading. of a floating reamer in 3 directions: vertical, horizontal, and angular, as required for proper perfor- mance of any floating reamer.

Figure 122. T10667 Bald Eagle Reamer Holder MT#3. Figure 124. Model T24798 Angle Plate Set, 2 pc. order online at www.grizzly.com or call 1-800-523-4777

-74- Model G0791 (Mfd. Since 9/15) T23962—ISO 68 Moly-D Way Oil, 5 gal. H8396—Chambering a Championship Match T23963—ISO 32 Moly-D Machine Oil, 5 gal. Barrel DVD T26685—ISO 32 Moly-D Machine Oil, 1 gal. Follow master gunsmith, Gordy Gritters, as he T23964—Armor Plate with Moly-D Multi- gives step-by-step instructions in the highly pre- Purpose Grease, 14.5 oz. (NLGI#2 Equivalent) cise area of chambering a rifle barrel worthy of Moly-D oils are some of the best we've found for championship match shooting. Gordy Gritters is maintaining the critical components of machinery a Benchrest Gunsmith who specializes in build- because they tend to resist run-off and maintain ing 1000 yard rifles. He has built several rifles their lubricity under a variety of conditions—as that hold world records and have won National well as reduce chatter or slip. Buy in bulk and Championships. He is extremely meticulous and save with 5-gallon quantities. gives up many of his "secrets" on this video!

T23964

T23962 T23963 T26685

Figure 125. ISO 68 and ISO 32 machine oil and multi-purpose grease. Figure 127. H8396 Chambering a Championship Match Barrel DVD. T24803—1" Dial Indicator & Small Magnetic Base T25615—Milling for Home Machinists Dial indicator has a range of 0–1" with an accu- Milling for Home Machinists is a project-based racy of within 0.001". Includes iGaging dial indica- course that provides a complete introduction to tor, small magnetic base, and a protective case. milling and the use of the milling machine.

Figure 128. T25615 Milling for Home Machinists.

Figure 126. T24803 1" Dial Indicator & Small Magnetic Base.

order online at www.grizzly.com or call 1-800-523-4777

Model G0791 (Mfd. Since 9/15) -75- SECTION 7: MAINTENANCE

Daily, After Operations • Press the Emergency Stop/RESET button (to To reduce risk of shock or prevent accidental startup). accidental startup, always • Vacuum/clean all chips and swarf from bed, disconnect machine from slides. power before adjustments, • Wipe down all unpainted or machined sur- maintenance, or service. faces with an oiled rag.

Semi-Annually Schedule • Change the headstock oil (Page 78).

Annually Ongoing • Change the apron oil (Page 78). To maintain a low risk of injury and proper • Lubricate end gears (Page 81). machine operation, if you ever observe any of the • Check/level bedway (Page 25). items below, shut down the machine immediately and fix the problem before continuing operations:

• Loose mounting bolts or fasteners. Cleaning/Protecting • Worn, frayed, cracked, or damaged wires. • Guards or covers removed. • Emergency Stop/RESET button not working Because of its importance, we recommend that correctly or not requiring you to reset it before the cleaning routine be planned into the workflow starting the machine again. schedule. • Oil level not visible in the sight glasses. • Damaged or malfunctioning components. Typically, the easiest way to clean swarf from the machine is to use a wet/dry shop vacuum that is Daily, Before Operations dedicated for this purpose. The small chips left over after vacuuming can be wiped up with a • Check/add headstock oil (Page 77). slightly oiled rag. Avoid using compressed air to • Add quick-change gearbox oil (Page 78). blow off chips, as this may drive them deeper into • Check/add apron oil (Page 78). the moving surfaces or cause sharp chips to fly • Lubricate the bedways (Page 79). into your face or hands. • Add oil to the ball oilers (Page 80). • Clean/lubricate the leadscrew (Page 79). All unpainted and machined surfaces should be • Check/retension V-belts (Page 89). wiped down daily to keep them rust free and in • Disengage the apron feed selection lever (to top condition. This includes any surface that is prevent crashes upon startup). vulnerable to rust if left unprotected (especially • Ensure carriage lock bolt is loose. parts that are exposed to water-soluble cutting fluid). Use way oil to prevent corrosion (see Page 75 for an offering from Grizzly).

-76- Model G0791 (Mfd. Since 9/15) Lubrication NOTICE The recommended lubrication is based on light-to-medium usage. Keeping in mind Use the information in the charts below as a that lubrication helps to protect the value daily guide for lubrication tasks. We recommend and operation of the lathe, these lubrication using Grizzly Model T23962, T23963, or T23964 tasks may need to be performed more fre- lubricants (see Pages 72 and 60) for most of the quently than recommended here, depend- lubrication tasks. ing on usage.

Lubrication Frequency Failure to follow reasonable lubrication Page practices as instructed in this manual could Lubrication Task Frequency Ref. lead to premature failure of lathe compo- Headstock Daily 77 nents and will void the warranty. Quick-Change Gearbox Daily 78 Apron Daily 78 Headstock Bedways Daily 79 Oil Type..... Grizzly T23963 or ISO 32 Equivalent Oil Amount...... 3.5 Quarts Longitudinal Leadscrew Daily 79 Check/Add Frequency...... Daily Ball Oilers Daily 80 Change Frequency...... Semi-Annually Every 1000 End Gears 81 Hours The headstock gearing is lubricated by an oil bath Mill Leadscrew As Needed 81 that distributes the lubricant with the motion of the gears, much like an automotive manual transmission. Change the oil after the first 2 hours of use, Lubrication Amount & Type then semi-annually. Lubrication Task Oil Type Amount Checking Oil Level Headstock ISO 32 3.5 Qt. The headstock reservoir has the proper amount of Quick-Change Gearbox ISO 68 2 Pumps oil when the oil level in the sight glass is approxi- Apron ISO 68 0.5 Qt. mately halfway. The oil sight glass is located As below the chuck, as shown in Figure 129. Bedways ISO 68 Needed As Longitudinal Leadscrew ISO 68 Needed 1–2 Ball Oilers ISO 32 Squirts End Gears NLGI #2 Dab As Mill Leadscrew NLGI #2 Needed

Headstock Items Needed Qty Oil Sight Glass Hex Wrench 6mm...... 1 Hex Wrench 8mm...... 1 2-Gallon Catch Pan...... 1 Figure 129. Location of headstock oil sight Pump-Type Oil Can w/Plastic Cone Tip...... 1 glass.

Model G0791 (Mfd. Since 9/15) -77- Adding Oil Quick-Change Gearbox The oil fill plug is located on top of the headstock, Oil Type..... Grizzly T23962 or ISO 68 Equivalent as shown in Figure 130. Oil Amount...... 2 Pumps Each Port Check/Add Frequency...... Daily

The quick-change gearbox uses a drip-type lubri- Fill Plug cation accessible through two ports on the right side of the gearbox (see Figure 131).

Drain Plug Gearbox Lubrication Ports

Figure 130. Locations of headstock fill and drain plugs.

To change headstock oil: Figure 131. Locations of gearbox oil ports. 1. DISCONNECT MACHINE FROM POWER! Use a pump-type oil can to add two pumps to 2. Remove end gear cover. each oil port, then wipe away any spilled oil.

3. Remove V-belts so that oil does not get on Apron them, necessitating their replacement (refer Oil Type..... Grizzly T23962 or ISO 68 Equivalent to the V-Belt Tension & Replacement on Oil Amount...... 0.5 Quarts Page 89 for detailed instructions). Check/Add Frequency...... Daily Change Frequency...... Annually 4. Remove fill plug to allow oil to drain more freely. Checking Oil Level 5. Place a funnel and a 2-gallon catch pan The apron oil sight glass is on the front of the under drain plug, then use 8mm hex wrench apron, as shown in Figure 132. Maintain the oil to remove drain plug. volume so that the level is approximately halfway in the sight glass. 6. When headstock reservoir is empty, replace drain plug and clean away any spilled oil. Fill Plug 7. Fill headstock reservoir until oil level is approximately halfway in sight glass, then replace fill plug.

8. Replace and retension V-belts, then secure end-gear cover before reconnecting lathe to power. Sight Glass

Figure 132. Location of apron oil sight glass.

-78- Model G0791 (Mfd. Since 9/15) Changing Oil & Flushing Reservoir Bedways Small metal particles may accumulate at the bot- Oil Type..... Grizzly T23962 or ISO 68 Equivalent tom of the reservoir with normal use. Therefore, to Oil Amount...... As Needed keep the reservoir clean, drain and flush it at least Lubrication Frequency...... Daily once a year. Before lubricating the bedways (see Figure 134), Place a catch pan under the apron drain plug clean them with mineral spirits. Apply a thin coat shown in Figure 133, remove the fill plug, then of oil along the length of the bedway. Move the use a 6mm hex wrench to remove the drain plug steady rest, carriage, and tailstock to access the and empty the reservoir. entire length of the bedways. If the lathe is in a moist or dirty environment, increase the lubrication interval.

Bedways Leadscrew

Drain Plug

Figure 133. Location of apron drain plug.

Flush the reservoir by pouring a small amount of Figure 134. Bedways. clean oil into the fill hole and allowing it to drain out the bottom. Replace the drain plug, add oil as previously described, then re-install the fill plug. Longitudinal Leadscrew Oil Type..... Grizzly T23962 or ISO 68 Equivalent Oil Amount...... As Needed Lubrication Frequency...... Daily

Before lubricating the leadscrew (see Figure 134), clean it first with mineral spirits. A stiff brush works well to help clean out the threads. Make sure to move the carriage out of the way, so you can clean the entire length of the leadscrew.

Apply a thin coat of oil along the length of the leadscrew. Use a stiff brush to make sure the oil is applied evenly and down into the threads.

Note: In some environments, abrasive material can become caught in the leadscrew lubricant and drawn into the half nut. In this case, lubricate the leadscrew with a quality dry lubricant.

Model G0791 (Mfd. Since 9/15) -79- Ball Oilers Oil Type..... Grizzly T23963 or ISO 32 Equivalent Oil Amount...... 1 or 2 Squirts C Lubrication Frequency...... Daily

This lathe has 11 ball oilers, as shown in Figures 135–138.

Ball Oilers Proper lubrication of ball oilers is done with a pump-type oil can fitted with a tip wide enough to seal the ball oiler inlet. We do not recommend using metal needle or lance tips, as they can push Figure 136. Carriage handwheel ball oiler. the ball too far into the oiler, break the spring seat, and lodge the ball in the oil galley. D Lubricate the ball oilers before and after machine use, and more frequently under heavy use. When lubricating ball oilers, first clean the outside surface to remove any dust or grime. Push the tip of the oil can nozzle against the ball oiler to create a hydraulic seal, then pump the oil can once or twice. If you see sludge and contaminants coming out of the lubrication area, keep pumping the oil can until the oil runs clear. When finished, wipe away any excess oil.

A. Compound-rest leadscrew & slides Figure 137. Tailstock ball oilers. B. Saddle slides C. Carriage handwheel D. Tailstock ball oilers E. Leadscrew end bearing F. Feed rod end bearing E

F A B

Figure 138. Leadscrew & feed rod ball oilers.

Figure 135. Saddle and slide ball oilers.

-80- Model G0791 (Mfd. Since 9/15) End Gears 5. Using a clean brush, apply a thin layer of grease on gears. Make sure to get grease Grease...... Grizzly T23964 or NLGI#2 Equivalent between gear teeth, but do not fill teeth Frequency...... Annually or When Changing valleys. The end gears, shown in Figure 139, should 6. Install end gears and mesh them together always have a thin coat of heavy grease to with an approximate 0.002"–0.004" backlash. minimize corrosion, noise, and wear. Wipe away Once gears are meshed together, apply excess grease that could be thrown onto the small dab of grease between them where V-belts and reduce optimal power transmission they mesh together—this grease will be dis- from the motor. tributed when gears rotate and recoat any areas scraped off during installation.

7. Re-install end gear cover before reconnecting lathe to power.

Lubrication Mill Leadscrew Port Lube Type... Model T23964 or NLGI#2 Equivalent Lube Amount...... Thin Coat Lubrication Frequency...... As Needed

Before lubricating the mill leadscrew (see Figure 140), clean it first with mineral spirits. A stiff brush works well to help clean out the threads. Make sure to move the headstock of the way, so you Figure 139. End gears exposed for lubrication. can clean the entire length of the leadscrew.

Handling & Care When dry, apply NLGI#2 grease to exposed Make sure to clean and lubricate any gears you leadscrew threads. Move headstock through its install or change. Be very careful during handling full range of motion several times to disperse and storage—the grease coating on the gears will grease along full length of leadscrew. easily pickup dirt or debris, which can then spread to the other gears and increase the rate of wear.

Make sure the end gear cover remains installed whenever possible to keep the gears free of dust or debris from the outside environment.

Lubricating 1. DISCONNECT MACHINE FROM POWER!

2. Remove end gear cover and all end gears Mill (see Figure 139). Leadscrew 3. Clean end gears thoroughly with mineral spirits to remove old grease. Use a small brush if necessary to clean between teeth. Figure 140. Location of mill leadscrew.

4. Clean shafts and wipe away any grease splatters in vicinity and on inside of end gear cover.

Model G0791 (Mfd. Since 9/15) -81- 6. Place a few moisture absorbing desiccant Machine Storage packs inside of electrical box.

7. Cover lathe and place it in a dry area that is To prevent the development of rust and corrosion, out of direct sunlight and away from hazard- the lathe must be properly prepared if it will be ous fumes, paint, solvents, or gas. Fumes stored for a long period of time. Doing this will and sunlight can bleach or discolor paint. ensure the lathe remains in good condition for later use. 8. Every few months, rotate by hand all gear- driven components a few times in several Preparing Lathe for Storage gear selections. This will keep the bearings, 1. Run lathe and bring headstock and apron bushings, gears, and shafts well lubricated reservoirs to operating temperature, then and protected from corrosion—especially drain and refill them with clean oil. during the winter months.

2. DISCONNECT MACHINE FROM POWER! Slide carriage, tailstock, and steady rest down lathe bed to make sure that way spot- 3. Thoroughly clean all unpainted, bare metal ting is not beginning to occur. surfaces, then apply a liberal coat of way oil, heavy grease, or rust preventative. Take Bringing Lathe Out of Storage care to ensure these surfaces are completely 1. Re-install V-belts and retension them (refer covered but that rust preventative or grease to Page 89 for detailed instructions) if you is kept off of painted surfaces. removed them for storage purposes.

4. Lubricate machine as outlined in Lubrication 2. Remove moisture absorbing desiccant packs section beginning on Page 77. Be sure to use from electrical box. an oil can to purge all ball oilers and oil pas- sages with fresh oil. 3. Repeat Test Run and Spindle Break-In procedures, beginning on Page 28. 5. Loosen or remove V-belts so they do not become stretched during storage period. (Be sure to place a maintenance note near power button as a reminder that the belts have been loosened or removed.)

-82- Model G0791 (Mfd. Since 9/15) SECTION 8: SERVICE

Review the troubleshooting procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather the serial number and manufacture date of your machine before calling. Troubleshooting

Motor & Electrical Symptom Possible Cause Possible Solution Machine does not 1. Power supply switched OFF or at fault. 1. Ensure power supply is ON/has correct voltage. start or a circuit 2. Lathe spindle switch not engaged. 2. Move spindle lever (Page 6) to engage switch. breaker trips. 3. Emergency Stop\RESET button engaged 3. Rotate button clockwise until it pops out to reset it or at fault. for operation; replace if not working properly. 4. Thermal overload relay has tripped. 4. Test/replace relay. If relay continues to trip, call tech support for assistance. 5. Wall fuse/circuit breaker is blown/tripped; 5. Verify circuit is rated for machine amp load; short in electrical system; start-up load too troubleshoot and repair cause of overload; replace high for circuit. weak breaker; find/repair electrical short. 6. Fuse has blown in machine electrical box. 6. Replace fuse; determine if overload is due to heavy operation; ensure power source has high enough voltage and power cord is correctly sized. 7. Contactor not getting energized/has burned 7. Test for power on all legs and contactor operation. contacts. Replace unit if faulty. 8. Wiring is open/has high resistance. 8. Check for broken wires or disconnected/corroded connections, and repair/replace as necessary. 9. Motor/plug wired incorrectly. 9. Correct motor/plug wiring connections (Pages 98 and 100). 10. Mill FWD/REV switch at fault. 10. Test/replace if necessary. 11. Start capacitor at fault. 11. Test/replace if faulty. 12. Motor is at fault. 12. Test/repair/replace. Motor stalls or is 1. V-belt(s) slipping. 1. Tension/replace V-belt(s) (Page 89); ensure pulleys underpowered. are aligned and free of oil/grease. 2. Run capacitor at fault. 2. Test/repair/replace. 3. Plug/receptacle at fault. 3. Test for good contacts/correct wiring. 4. Gearbox at fault. 4. Select appropriate gear ratio; replace broken or slipping gears. 5. Contactor not energized/has poor contacts. 5. Test all legs for power/replace if faulty. 6. Motor bearings at fault. 6. Test/repair/replace. 7. Motor at fault. 7. Test/repair/replace. Loud, repetitious 1. Pulley set screws or keys are missing or 1. Inspect keys and set screws. Replace or tighten if noise coming from loose. necessary. lathe at or near the 2. Motor fan is hitting the cover. 2. Tighten fan, shim cover, or replace items. motor. Motor overheats. 1. Motor overloaded. 1. Allow motor to cool; reduce load on motor. Motor is loud when 1. Excessive depth of cut or feed rate. 1. Decrease depth of cut or feed rate. cutting, or it bogs 2. Spindle speed or feed rate wrong for 2. Refer to feed/speed charts in Machinery's down under load. cutting operation. Handbook or feed/speed calculator on the internet. 3. Cutting tool is dull. 3. Sharpen or replace the cutting tool.

Model G0791 (Mfd. Since 9/15) -83- Lathe Symptom Possible Cause Possible Solution Entire machine 1. Workpiece is unbalanced. 1. Re-install workpiece; center with spindle bore. vibrates upon 2. Loose or damaged V-belt(s). 2. Retension/replace V-belt(s) (see Page 89). startup and while 3. V-belt pulleys are not properly aligned. 3. Align V-belt pulleys. running. 4. Chuck or faceplate is unbalanced. 4. Rebalance chuck or faceplate; contact a local machine shop for help. 5. Change gears not aligned or no backlash. 5. Adjust change gears and establish backlash. 6. Broken gear or bad bearing. 6. Replace broken gear or bearing. 7. Workpiece is hitting stationary object. 7. Stop lathe and correct interference problem. 8. Spindle bearings at fault. 8. Reset spindle bearing preload (Page 91) or replace worn spindle bearings. Bad surface finish. 1. Wrong spindle speed or feed rate. 1. Adjust for appropriate spindle speed and feed rate. 2. Dull tooling or poor tool selection. 2. Sharpen tooling or select a better tool for operation. 3. Tool height not at spindle centerline. 3. Adjust tool height to spindle centerline (Page 41). 4. Too much play in gibs. 4. Tighten gibs (see Page 87). Tapered tool difficult 1. Quill not fully retracted into tailstock. 1. Turn quill handwheel until it forces tool out of quill. to remove from 2. Contaminants not removed from taper 2. Clean taper and bore, then re-install tool. tailstock quill. before inserting into quill. Cross slide, 1. Gibs out of adjustment. 1. Adjust gibs (see Page 87). compound rest, or 2. Handwheel is loose or backlash is high. 2. Tighten handwheel fasteners, adjust handwheel carriage feed has backlash to a minimum (see Page 86). sloppy operation. 3. Leadscrew mechanism worn. 3. Replace leadscrew mechanism. Cross slide, 1. Dovetail ways loaded with shavings, dust, 1. Remove gibs, clean ways, lubricate, and re-adjust compound, or grime. gibs. or carriage 2. Gib screws are too tight. 2. Loosen gib screw(s) slightly (see Page 87), and handwheels hard to lubricate bedways. move. 3. Backlash setting too tight. 3. Slightly loosen backlash setting (see Page 86). 4. Bedways are dry. 4. Lubricate bedways/ball oilers (Page 79). Cutting tool 1. Tool holder not tight enough. 1. Check for debris, clean, and retighten. 1 or machine 2. Cutting tool sticks too far out of tool holder; 2. Re-install cutting tool so no more than ⁄3 of the total components vibrate lack of support. length is sticking out of tool holder. excessively during 3. Gibs are out of adjustment. 3. Adjust gibs (see Page 87). cutting. 4. Dull cutting tool. 4. Replace or resharpen cutting tool. 5. Incorrect spindle speed or feed rate. 5. Use the recommended spindle speed and feed rate. Workpiece is 1. Headstock and tailstock not properly 1. Re-align tailstock to the headstock spindle tapered. aligned with each other. centerline (see Page 41). Chuck jaws will 1. Chips lodged in jaws or scroll plate. 1. Remove jaws, clean and lubricate scroll plate, then not move or do not replace jaws. move easily. Carriage will not 1. Gears not all engaged. 1. Adjust gear levers. feed or is hard to 2. Half nut lever engaged. 2. Disengage half nut lever. move. 3. Loose screw on feed handle. 3. Tighten. 4. Carriage lock is tightened down. 4. Ensure carriage lock bolt is fully released. 5. Chips have loaded up on bedways. 5. Frequently clean away chips that load up during turning operations. 6. Bedways are dry and in need of lubrication. 6. Lubricate bedways/ball oilers. 7. Gibs are too tight. 7. Loosen gibs screw(s) slightly (see Page 87). 8. Gears broken. 8. Replace gears. Gear change levers 1. Gears not aligned inside headstock/quick- 1. Rotate spindle by hand with light pressure on the will not shift. change gearbox. lever until gear falls into place.

-84- Model G0791 (Mfd. Since 9/15) Mill Symptom Possible Cause Possible Solution Tool loose in spindle. 1. Tool is not fully drawn up into spindle taper. 1. Tighten drawbar. 2. Debris on tool or in spindle taper 2. Clean tool and spindle taper. 3. Taking too big of a cut. 3. Lessen depth of cut and allow chips to clear. Breaking tools or 1. Spindle speed/feed rate is too fast. 1. Set spindle speed correctly or use slower feed rate. cutters. 2. Cutting tool is too small. 2. Use larger cutting tool and slower feed rate. 3. Cutting tool getting too hot. 3. Use coolant or oil for appropriate application. 4. Taking too big of a cut. 4. Lessen depth of cut and allow chips to clear. 5. Spindle extended too far down. 5. Fully retract spindle and lower headstock. This increases rigidity. Workpiece or tool 1. Table locks not tight. 1. Tighten table locks. vibrates or chatters 2. Workpiece not secure. 2. Properly clamp workpiece on table or in vise. during operation. 3. Spindle speed/feed rate is too fast. 3. Set spindle speed correctly or use slower feed rate. 4. Spindle extended too far down. 4. Fully retract spindle and lower headstock. This increases rigidity. 5. Quill lock lever not tight. 5. Tighten quill lock lever. 6. Gibs too loose in table 6. Tighten gibs. Table is hard to 1. Table locks are tightened down. 1. Make sure table locks are fully released. move. 2. Chips have loaded up on ways. 2. Frequently clean away chips that load up during operations. 3. Ways are dry and need lubrication. 3. Lubricate ways. Headstock is hard to 1. Headstock lock(s) or gib is at fault. 1. Loosen/replace lock lever and adjust gib. raise. 2. Headstock lead screw is binding 2. Clean and relubricate headstock leadscrew and gears. Bad surface finish. 1. Spindle speed/feed rate is too fast. 1. Set spindle speed correctly or use slower feed rate. 2. Dull or incorrect cutting tool. 2. Sharpen cutting tool or select one that better suits the operation. 3. Wrong rotation of cutting tool. 3. Check for proper cutting tool rotation. 4. Workpiece not secure. 4. Properly clamp workpiece on table or in vise. 5. Spindle extended too far down. 5. Fully retract spindle and lower headstock. This increases rigidity. Cutting results not 1. Table travel is inconsistent. 1. Adjust gibs. square. Spindle overheats. 1. Mill/drill operated at high speeds for 1. Allow mill/drill to cool. extended period. Lack of power at 1. Wrong voltage. 1. Correct voltage. spindle. Spindle does not 1. Poorly adjusted return spring. 1. Increase return spring tension. return to highest 2. Worn return spring. 2. Replace return spring. position. Mill FWD/REV 1. Shorted/disconnected wiring. 1. Inspect circuit boards, wiring connections. Replace/ switch does not repair as necessary. work.

Model G0791 (Mfd. Since 9/15) -85- 4. Rotate cross slide handwheel clockwise to Adjusting Backlash feed leadscrew nut out from under cross slide, as shown in Figure 142.

Backlash is the amount of play in a leadscrew and can be felt as the free play in a handwheel when Leadscrew Nut changing direction of rotation. The amount of the backlash can be viewed on the handwheel graduated dial. Backlash When adjusting backlash, tighten the components Adjustment enough to remove backlash, but not so much that Cap Screw the components bind the leadscrew, making it hard to turn. Overtightening will cause excessive wear to the sliding block and leadscrew.

Tools Needed Qty Hex Wrench 2.5mm...... 1 Figure 142. Cross slide leadscrew nut. Hex Wrench 5mm...... 1 Hex Wrench 6mm...... 1 5. Tighten backlash adjustment cap screw Punch Pin 2mm ...... 1 shown in Figure 142 in small increments.

Cross Slide Backlash 6. Hold leadscrew nut and test after each adjustment by rotating handwheel back-and- 1. DISCONNECT MACHINE FROM POWER! forth until backlash amount is approximately 0.002"–0.004". 2. Feed cross slide toward operator until it reaches end of its travel. 7. Feed leadscrew nut back under cross slide and replace cap screw removed in Step 2. 3. Remove cap screw that secures cross slide leadscrew nut (see Figure 141). Compound Rest Backlash Note: You may need to rotate compound rest 1. Turn compound rest handwheel counter- (see Page 47) to expose cap screw. clockwise several turns.

2. Loosen set screws on compound rest faceplate several turns (see Figure 143).

Faceplate

Set Screws Cap Screw Securing Leadscrew Nut to Cross Slide

Figure 141. Location of cap screw that secures the leadscrew nut.

Figure 143. Compound rest backlash adjustments.

-86- Model G0791 (Mfd. Since 9/15) 3. Use punch pin to loosen faceplate and adjust Tools Needed Qty it until backlash is approximately 0.002"– Standard Screwdriver #2...... 1 0.004", as indicated on graduated dial. Hex Wrench 3mm...... 1 Hex Wrench 6mm...... 1 4. Secure setting with set screws. Wrench 10mm...... 1

5. Repeat adjustments above if necessary. Make sure the bedways and leadscrew have been cleaned and relubricated before beginning any adjustments. Refer to Lubrication beginning on Page 77 for instructions and lubricant Adjusting Gib specifications.

The goal of adjusting the gib screws is to remove Cross Slide Gib sloppiness or "play" from the ways without over- 1. DISCONNECT MACHINE FROM POWER! adjusting them to the point where they become stiff and difficult to move. 2. Loosen locking set screw shown in Figure 144. In general, loose gibs cause poor finishes and tool chatter; however, over-tightened gibs cause premature wear and make it difficult to turn the handwheels.

The cross-slide and compound slide on this lathe each use a long steel wedge called a gib that is positioned between the component and its dove- tailed-ways. At the end of each gib is a gib screw, which moves and holds the gib. Depending upon Set which direction the gib moves, the space between Screw the sliding ways increases or decreases to control Gib Screw the rigidity of the cross slide and compound slide. (1 of 2)

Before adjusting the gibs, loosen the locks for Figure 144. Cross slide gib components. the device so that the gibs can freely slide during adjustment, then lubricate the ways. 3. Adjust gib screws as follows:

The gib adjustment process usually requires — To increase slide tension, loosen rear gib 1 some trial-and-error. Repeat the adjustment pro- screw ⁄8 turn, and tighten front gib screw 1 cess as necessary until you find the best balance ⁄8 turn. between loose and stiff movement. Most machinists find that the ideal gib adjustment is one where —To decrease slide tension, loosen front gib 1 a small amount of drag or resistance is present, screw ⁄8 turn, and tighten rear gib screw 1 yet the handwheels are still easy to move. ⁄8 turn.

4. After each adjustment, use cross slide handwheel to test cross slide movement.

5. Repeat Steps 3–4 until cross slide movement is acceptable.

Model G0791 (Mfd. Since 9/15) -87- Compound Rest Gib The saddle gib is located on the bottom of the back edge of the slide (see Figure 147). This gib Figure 145 shows the gib location on the com- is designed differently than the cross or compound pound rest. The compound rest gib adjusts in slide gibs. Instead of being a wedge-shaped plate, the same manner and with the same tools as the it is a flat bar. The gib pressure is applied by four cross slide gib. However, in this case, to increase set screws. Hex nuts secure these set screws in or decrease tension, the gib adjustment screw place, so they will not loosen during operation. directions are reversed.

Set Screw

Gib Screw Set Screws (1 of 2) Figure 147. Saddle gib components Figure 145. Compound rest gib components. (viewed from rear of saddle).

Saddle Gib To adjust saddle slide gib: The saddle is supplied with a carriage lock on the front right-hand side of the slide (see Figure 146). 1. DISCONNECT MACHINE FROM POWER! This bolt locks the saddle in place for increased rigidity when making face cuts. Before making 2. Clean and lubricate lathe ways, slide, and adjustments to the saddle gib, make sure that this leadscrew (refer to Ball Oiler Lubrication on lock is loose by turning it counterclockwise one Page 80 for instructions and lubricant specifi- full turn. cations).

IMPORTANT: Do not loosen the carriage lock 3. If carriage lock (see Figure 146) is tight, more than a couple of turns or the components loosen it two turns. inside will come apart. Re-installing these components is difficult and time consuming. 4. Loosen jam nuts on four set screws shown in Figure 147, and adjust set screws same amount as follows: Carriage Lock —To tighten carriage gib, tighten set screws.

—To loosen gib, loosen set screws.

5. Repeat adjustments as necessary until adjustment is acceptable.

6. Hold set screws in place and tighten jam nuts.

Figure 146. Location of carriage lock.

-88- Model G0791 (Mfd. Since 9/15) Adjusting Half Nut Tensioning/ Replacing V-Belt The half-nut mechanism can be adjusted if it becomes loose from wear. The half nut is mounted in the ways with a gib exerting pressure between After initial break in, the V-belts stretch slightly the components to reduce sloppy movement. The and seat into the pulley. It is important to check half-nut gib is a flat bar-type gib, similar to the and adjust them to compensate for this initial saddle gib, and is tensioned with two set screws. wear. Check the tension thereafter on a monthly basis. If the belts become excessively worn or Tools Needed Qty damaged, replace them as a matched set. Hex Wrench 4mm...... 1 Hex Wrench 5mm...... 1 Tool Needed Qty Open-End Wrench 13mm...... 1 Hex Wrench 17mm...... 1

To adjust half nut: Tensioning V-Belts 1. DISCONNECT MACHINE FROM POWER! 1. DISCONNECT MACHINE FROM POWER!

2. Disengage half nut and remove thread dial. 2. Remove end gear cover.

3. Loosen hex nuts on set screws shown in 3. Loosen motor mount hex bolts (see Figure Figure 148. 149). Note: It may be more convenient to access the motor mount hex nuts if you first remove Half Nut the rear splash guard.

Set Screws

Figure 148. Half nut gib set screws.

1 4. Tighten each set screw approximately ⁄8 of a turn, then retighten the hex nuts without mov- Figure 149. Locations of motor mount hex bolts. ing the set screws.

5. Move carriage handwheel until half nut can 4. Push down on the motor and re-tighten the fully close, then open/close half nut several mounting hex bolts. times and notice how it feels. The half nut is correctly adjusted when you feel a slight drag while opening and closing it. It should not feel too stiff or too loose.

6. Repeat Steps 3–5, if necessary, until you are satisfied with half nut adjustment, then re-install thread dial.

Model G0791 (Mfd. Since 9/15) -89- 5. Check belt tension: Each belt is correctly 1 tensioned when there is approximately ⁄4" Installing/Removing deflection when it is pushed with moderate pressure, as shown in Figure 150. Gap Insert

This lathe is equipped with a removable gap insert that will allow for turning large diameter Pulley workpieces. The gap was seated, preloaded, and Deflection then ground for precise bedway mating and alignment at the factory.

1 ⁄4" Removing the gap can cause the lathe insert to slightly spring out of shape. When re-installed, there is no guarantee that original alignment and Pulley flush mating will be the same. For this reason, removing the gap is considered a permanent Figure 150. Correct timing-belt deflection. alteration to the lathe, even if it is later re-installed.

1 —If there is more than ⁄4" deflection when Tools Needed Qty each belt is pushed with moderate pres- Open-End Wrench 14mm...... 1 sure, loosen the motor mount bolts, lower Hex Wrench 8mm...... 1 the motor, adjust belt tension as required, Heavy Dead Blow Hammer...... 1 then tighten the bolts. Miscellaneous C-Clamps...... As Required Wooden Blocks...... As Required 6. Secure end gear cover. Removing Gap Insert Replacing V-Belts 1. DISCONNECT MACHINE FROM POWER! 1. DISCONNECT MACHINE FROM POWER! 2. Remove four cap screws that secure gap to 2. Remove end gear cover. bed (see Figure 151).

3. Loosen motor mount bolts (see Figure 149 on the previous page), slide motor up, and Dowel Pin remove V-belts. & Jack Nut (1 of 2) Note: It may be more convenient to access the motor mount bolts if you first remove the Preload rear splash guard. Cap Screw

4. Install new V-belts as a matched set so they Cap equally share the load. Screws (2 of 4) 5. Tension belts (refer to Tensioning/Replacing V-Belt on the previous page.) Figure 151. Gap retaining fasteners. 6. Secure end gear cover. 3. Tighten dowel pin jack nuts (see Figure 151) to draw pins from gap.

-90- Model G0791 (Mfd. Since 9/15) 4. Loosen preload cap screw (see Figure 151) a few turns until it no longer contacts head- Adjusting Spindle stock. Bearing Preload 5. Tap outside of gap insert with dead blow hammer to loosen it, and, with help of another This lathe is shipped from the factory with the person, remove gap insert. spindle bearing preload properly adjusted. If the spindle ever develops a bit of end-play and the Re-Installing Gap Insert workpiece finish suffers, you can adjust the bear- 1. Clean all mating surfaces completely with ing preload to remove the end-play and improve mineral spirits. Inspect and remove any the workpiece finish. burrs. ALL MATING SURFACES MUST BE ABSOLUTELY CLEAN! Adjusting the bearing preload requires using a spanner wrench or a punch and hammer. You 2. Lightly oil a lint-free cloth with way oil, and can either purchase the spanner wrench at a tool rub a thin film into pores of freshly cleaned store or fabricate one, using the diagram shown gap surfaces. Next, place insert in position on in Figure 152. lathe bed.

3. Back off threaded dowel pin jack nuts until they are flush with end of pins, then drop pins Fabricate from CRS into pin holes in gap. or HRS bar stock " 12" 9 ⁄ 16 4. Jostle gap closer to its final alignment until 1 pins seat naturally. Radius

5. Install and lightly snug four cap screws in an order that will draw closer into alignment. 7 1 Fabricate pin to ⁄32" D x ⁄4" L and weld. Using blocks of wood and clamps to get mating surfaces into alignment can also be Figure 152. Spanner wrench diagram. helpful. Tools Needed Qty 6. When alignment and flush mating is accept- Spanner Wrench 80–90mm Hook-Type...... 1 able, tighten four cap screws in a pattern that Chuck Key...... 1 will maintain or improve alignment. Dead Blow Hammer...... 1 Piece of Scrap Wood...... 1 7. Wait 24 hours, and check for quality of mat- Dial Indicator...... 1 ing. If unacceptable, use clamps and blocks Hex Wrench 6mm...... 1 of wood, and loosen and tighten appropriate cap screws to draw-in and release certain areas of gap to achieve required alignment. Adjusting Preload 1. Run lathe for 20 minutes on high speed to 8. When satisfied with alignment, tap dowel pins bring lathe to a normal temperature. rest of way into gap until they are in a fully seated position, and thread jack nuts down 2. DISCONNECT MACHINE FROM POWER! until they just contact gap.

9. Tighten preload cap screw until it contacts headstock and resistance can be felt, then 3 tighten it an additional ⁄4-turn.

Model G0791 (Mfd. Since 9/15) -91- 3. Remove chuck, then shift spindle to neutral 7. Loosen inner spanner nut one turn. by positioning alpha spindle speed lever between C and B and numeric spindle speed Note: You may have to tap on the outboard lever between the I and II, as shown in end of the spindle as explained in Step 8, to Figure 153. help unload the spindle and break the spanner nut loose.

8. Place wooden block over outboard end of Alpha Numeric spindle, tap it a few times with small sledge

Lever C I Lever or heavy dead blow hammer (see Figure Set between B II Set between 156). Your goal is to slide spindle forward A III B & C I & II just enough to introduce spindle end-play that you can feel by hand. Figure 153. Spindle speed levers set to neutral.

4. Remove end gear cover, then remove the outboard spindle cover (see Figure 154).

Outboard Spindle Cover

Figure 154. Outboard spindle cover. Figure 156. Introducing detectable end-play.

5. Place chuck key in cam-lock socket and keep 9. Place dial indicator on cross slide and move spindle from rotating. carriage toward headstock until contact point of indicator touches spindle face, as shown in 6. Using a spanner wrench, or hammer and Figure 157. punch, loosen outer spanner nut (see Figure 155) and remove it.

Spanner Wrench

Figure 157. Dial indicator setup. Outer Spanner Nut 10. Move carriage an additional 0.100" toward Figure 155. Loosening outer spanner nut. headstock.

-92- Model G0791 (Mfd. Since 9/15) 1 11. Insert chuck key into a cam socket to prevent 12. Tighten spanner nut an additional ⁄16" along spindle from turning, then tighten inner span- its circumference. See Figure 159 for exam- ner nut until dial indicator needle just stops ple of this measurement. moving (see Figure 158).

1 ⁄16" Travel

Figure 159. Final spanner nut rotation. Figure 158. Adjusting spindle bearings. 13. Without allowing inner spanner nut to tighten Note: For convenience and accuracy, we any further, install and tighten outer spanner recommend having another person watch the nut against the inner nut. dial while you tighten the inner spanner nut. Do not overtighten outer spanner nut because While tightening the inner spanner nut, additional preload can force bearings even rock the spindle back and forth slightly with tighter against races in headstock and cause the chuck key to make sure the spindle headstock to compress, or crack, or cause tapered roller bearings seat properly in their bearing failure. races. Confirming Bearing Preload When the dial indicator needle stops mov- 1. Re-attach removed lathe components and ing, there will be no spindle end-play and no prepare it for operation. bearing preload. It is important that you find this point without tightening the spanner nut 2. Install chuck and tighten jaws. too much and inadvertently preloading the spindle bearings. 3. Set spindle speed to highest setting.

If you think you have gone past the zero end- 4. Connect lathe to power and lathe spindle ON. play point, unload the bearings by repeating Steps 7–8, then retighten the inner spanner 5. Let lathe run for 20 minutes, periodically shut- nut until it has reached the zero end play ting it down a few times and checking spindle position. nose temperature (refer to next step).

6. Turn spindle OFF, disconnect lathe from power, and check temperature of spindle.

—If spindle nose is slightly warm to touch, you have correct bearing preload.

—If spindle nose is too hot to touch, preload is too tight and you must repeat bearing preload adjustment procedure. When repeating procedure, rotate inner spanner nut a little less during Step 12 in preceding instructions.

Model G0791 (Mfd. Since 9/15) -93- machine SECTION 9: WIRING

These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Compare the manufacture date of your machine to the one stated in this manual, and study this section carefully.

If there are differences between your machine and what is shown in this section, call Technical Support at (570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated wiring diagram may be available. Note: Please gather the serial number and manufacture date of your machine before calling. This information can be found on the main machine label.

Wiring Safety Instructions SHOCK HAZARD. Working on wiring that is con- WIRE/COMPONENT DAMAGE. Damaged wires nected to a power source is extremely dangerous. or components increase the risk of serious per- Touching electrified parts will result in personal sonal injury, fire, or machine damage. If you notice injury including but not limited to severe burns, that any wires or components are damaged while electrocution, or death. Disconnect the power performing a wiring task, replace those wires or from the machine before servicing electrical com- components. ponents! MOTOR WIRING. The motor wiring shown in MODIFICATIONS. Modifying the wiring beyond these diagrams is current at the time of printing what is shown in the diagram may lead to unpre- but may not match your machine. If you find this dictable results, including serious injury or fire. to be the case, use the wiring diagram inside the This includes the installation of unapproved after- motor junction box. market parts. CAPACITORS/INVERTERS. Some capacitors WIRE CONNECTIONS. All connections must and power inverters store an electrical charge for be tight to prevent wires from loosening during up to 10 minutes after being disconnected from machine operation. Double-check all wires dis- the power source. To reduce the risk of being connected or connected during any wiring task to shocked, wait at least this long before working on ensure tight connections. capacitors.

CIRCUIT REQUIREMENTS. You MUST follow EXPERIENCING DIFFICULTIES. If you are expe- the requirements at the beginning of this manual riencing difficulties understanding the information when connecting your machine to a power source. included in this section, contact our Technical Support at (570) 546-9663.

The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com.

-94- Model G0791 (Mfd. Since 9/15)

Wiring Overview

Work Lamp Mill Motor

Electrical Panel

Lathe Motor

Control Panel

Spindle Switch (Inside)

To Work Lamp To Mill Motor (Page 99) (Page 99)

To Control Panel To Lathe Motor (Page 100) (Page 98) To Electrical Cabinet (Page 96) To Spindle Switch (Page 100)

Hot 220 VAC Hot G 6-15 Plug (As Recommended) Ground

Model G0791 (Mfd. Since 9/15) READ ELECTRICAL SAFETY -95- ON PAGE 94! Electrical Cabinet Wiring Diagram

N L N L L 1 11 N L 26 25 24 23 22 21 20 L 1L1 3L2 5L3 1L1 3L2 5L3 20-21 = 110V Tianshui Tianshui Relay JRS4-09/25d 110V 24V Relay JRS4-09/25d

A 20-22 = 220V Transformer 6 A

4 2A 5A 13

20-23 = 230V 6 FR2 FR1

MTE JBK5-100VATH 5 11 Test STOP RESET STOP RESET 20-24 = 240V WUXI NO.5 MACHINE TOOL Test 98 97 98 97 20-25 = 380V NO 95 96 NO 95 96 NC 110V 24V NC 20-26 = 400V TC 2A 5A 5 30 31 32 33 E 2T1 4T2 8 6T3 18 2T1 4T2 18 6T3

1 11 N L L N L L 0 1 0 11 PE

L 8 N 0 14 15 0 19 15 0 8 9 0 19 19 10 0 19 A1 8 A1 N A1 A1 A1 L L L 10 N L L A2 L L A2 N A2 A2 A2 N N 5 14 9 3 1L1 3L2 5L3 21NC 1L1 3L2 5L3 21NC 1L1 3L2 5L3 21NC 1L1 3L2 5L3 21NC 13NO 23NO 33NO 43NO 53NO 61NC 53NO 61NC U1 53NO 61NC 53NO 61NC 5 Tianshui 120V Tianshui 120V Tianshui 120V Tianshui 120V Tianshui 120V JZC3 40d F3 11d F3 11d F3 11d F3 11d GSC1- GSC1- GSC1- KM3 GSC1- KM4 KM1 KM2 1801 KA0 1801 KA0 1801 KA0 1801 KA0 Contactor KA0 54NO 62NC 54NO 62NC 54NO 62NC 54NO 62NC 2T14T2 6T3 22NC 2T14T2 6T3 22NC 2T14T2 6T3 22NC 20 2T14T2 6T3 22NC 14NO24NO 34NO 44NO 20

13 12 6 Z1 U2 Z2 Z2 U2 Z1 7 Z1 U2 Z2 2 2 A2 A2 Z1 U2 Z2 A2 A2 A2 21 21

PE 1U1 1Z1 1U2 L N U1 U2 Z1 0 1 11 2 3 5 6 7 12 13

PE Ground

L N U1 U2 Z1 0 1 1 2 3 4 5 6 7 12 13 1U1 1U2 1Z1 PE PE PE

To To To To To To Mill Motor Work Lamp Lathe Motor Power Connection Control Panel Spindle Switch Page 99 Page 99 Page 95 Page 95 Page 100 Page 100

-96- READ ELECTRICAL SAFETY Model G0791 (Mfd. Since 9/15) ON PAGE 94! Electrical Cabinet Wiring

Figure 160. Electrical cabinet wiring.

Model G0791 (Mfd. Since 9/15) READ ELECTRICAL SAFETY -97- ON PAGE 94! Lathe Motor Wiring Diagram

To Electrical Cabinet Page 96 Motor 220V

Run Capacitor 20MFD 450VAC

Z2W2 U2 V2

PE U1 V1 Z1W1

Ground Z1 Start Capacitor 150MFD 250VAC

Figure 161. Lathe motor wiring.

-98- READ ELECTRICAL SAFETY Model G0791 (Mfd. Since 9/15) ON PAGE 94!

Mill Motor & Work Lamp Wiring Diagram

Motor 220V

Ground The wiring shown here was current at the time of printing, but changes may occur over time. Verify your Run Start machine matches this diagram Capacitor Capacitor before using it. 1Z1 1U2 1U1 16MFD U1 Z2W2 100MFD 450VAC 250VAC

V1 U2

Z1W1 V2

Figure 162. Mill motor Lamp Switch wiring. KCD1 25T85

Work Lamp Junction Box (Viewed from Behind)

To Electrical Cabinet Figure 163. Worklamp Figure 164. Worklamp Page 96 terminal bar. switch.

Model G0791 (Mfd. Since 9/15) READ ELECTRICAL SAFETY -99- ON PAGE 94! Control Panel Wiring Diagrams

Control Panel (Viewed from Rear) 2 16 5 5 5 17 5 2 2 2 6 5 0 X2 X1X1 0 16 3 4 0 12 13 Power Lamp Emergency Power Start Button Inching (Jog) Button MILL FWD/REV Switch 1 HUILONG XD103 Stop/RESET HUILONG LA103 HUILONG LA103 HUILONG LA103 HUILONG LA103 24VDC (Stacked)

Ground Headstock

To Electrical Cabinet Page 96

Figure 165. Control panel wiring. Spindle Switch Wiring

Spindle Rotation Switch

NC C 4 5 7 NO NO 6

C NC To Electrical Cabinet Page 96 Figure 166. Spindle switch wiring.

-100- READ ELECTRICAL SAFETY Model G0791 (Mfd. Since 9/15) ON PAGE 94! SECTION 10: PARTS

Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here are available for purchase. Call (800) 523-4777 or visit our online parts store at www.grizzly.com to check for availability. Accessories

1-2 2 3 4

1-1

32 34 35 30

36-1 36-2 33 31 36 40 6 29 36-3

46 45 27 28 42 41 7

44 23 22 24 25 26 43

9 21 10 19 20 13 11 18 17 16 15 12

Model G0791 (Mfd. Since 9/15) -101- Accessories Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 1 P07910001 4-JAW INDEPENDENT CHUCK ASSY 24 P07910024 DEAD CENTER MT#3 CARBIDE TIPPED 1-1 P07910001-1 4-JAW INDEPENDENT CHUCK BODY 8" 25 P07910025 DEAD CENTER MT#3 HSS 1-2 P07910001-2 4-JAW CHUCK REVERSIBLE JAW 26 P07910026 DRILL CHUCK ARBOR R-8/B16 2 P07910002 FACEPLATE 10" D1-5 27 P07910027 SPINDLE SLEEVE MT#5-MT#3 3 P07910003 BOTTLE FOR OIL 28 P07910028 QUICK-CHANGE TOOL HOLDER ASSY 4 P07910004 TOOLBOX 29 P07910029 GEAR 45T 6 P07910006 CHUCK WRENCH 4-JAW 30 P07910030 GEAR 27T 7 P07910007 CHUCK WRENCH 3-JAW 31 P07910031 GEAR 50T 9 P07910009 WRENCH 12 X 14MM OPEN-ENDS 32 P07910032 GEAR 26T 10 P07910010 WRENCH 10 X 12MM OPEN-ENDS 33 P07910033 GEAR 35T 11 P07910011 WRENCH 9 X 11MM OPEN-ENDS 34 P07910034 GEAR 60T 12 P07910012 DRILL CHUCK B16 3-16MM 35 P07910035 TAILSTOCK WRENCH 13 P07910013 DRILL CHUCK KEY 5/16" STD 11T SD-5/8" 36 P07910036 3-JAW CHUCK ASSY 6" D1-5 SCROLL 14 P07910014 SCREWDRIVER PHILLIPS #2 36-1 P07910036-1 3-JAW CHUCK TOP JAW SET 15 P07910015 SCREWDRIVER FLAT #2 36-2 P07910036-2 3-JAW CHUCK BOTTOM JAW SET 16 P07910016 HEX WRENCH 10MM 36-3 P07910036-3 3-JAW CHUCK BODY 6" 17 P07910017 HEX WRENCH 8MM 40 P07910040 GEAR 36T 18 P07910018 HEX WRENCH 6MM 41 P07910041 CAMLOCK STUD D1-5 19 P07910019 HEX WRENCH 5MM 42 P07910042 CAP SCREW M8-1.25 X 16 20 P07910020 HEX WRENCH 4MM 43 P07910043 WRENCH 17 X 19MM OPEN-ENDS 21 P07910021 HEX WRENCH 2MM 44 P07910044 WRENCH 22 X 24MM OPEN-ENDS 22 P07910022 SPIDER BOLT W/NUT M10-1.5 X 38 45 P07910045 SPINDLE SLEEVE R8-MT#3 23 P07910023 LIVE CENTER MT#3 46 P07910046 SPINDLE SLEEVE MT#3-MT#2

-102- Model G0791 (Mfd. Since 9/15) Headstock Gearing

101 117 102 103 125 130 165 104 105 166 167 106 107

135 168 108 164 169 171 110 104 111 170 112 172 113 109 161 173 114 116 115 163 160 162 151 117 119 167 118 130 157 117 129 157 125 154 158 156 153 152 151 155 117 130 150 149

148

121 120 122 123 144 126 117 117 122 147 127 125 146 128 145 129 174 142 131 137 130 140 141 143 139 117 138 136 135 133 134 130

Model G0791 (Mfd. Since 9/15) -103- Headstock Gearing Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 101 P07910101 EXT RETAINING RING 45MM 139 P07910139 KEY 8 X 8 X 80 102 P07910102 GEAR 36T 140 P07910140 KEY 8 X 8 X 45 W/1 HOLE 103 P07910103 GEAR 55T 141 P07910141 BUTTON HD CAP SCR M3-.5 X 8 104 P07910104 KEY 5 X 5 X 18 142 P07910142 SPINDLE D1-5 105 P07910105 GEAR 35T 143 P07910143 KEY 8 X 8 X 210 106 P07910106 EXT RETAINING RING 36MM 144 P07910144 CAP SCREW M6-1 X 20 107 P07910107 GEAR 45T 145 P07910145 INBOUND SPINDLE BEARING COVER 108 P07910108 GEAR 58T 146 P07910146 INBOARD BEARING COVER GASKET 109 P07910109 GEAR 21T 147 P07910147 TAPER ROLLER BEARING HR 30212J NSK 110 P07910110 GEAR 45T 148 P07910148 HEADSTOCK HOUSING 111 P07910111 EXT RETAINING RING 58MM 149 P07910149 BEARING BLOCK GASKET 112 P07910112 GEAR 59T 150 P07910150 BEARING BLOCK 113 P07910113 GEAR 46T 151 P07910151 INT RETAINING RING 42MM 114 P07910114 CAP SCREW M6-1 X 14 152 P07910152 SHAFT 115 P07910115 GEAR SHAFT COVER (L) 153 P07910153 OIL SEAL PD25 X 45 X 10 116 P07910116 GEAR SHAFT COVER (L) GASKET 154 P07910154 GEAR 60T 117 P07910117 BALL BEARING 6004-2RS 155 P07910155 TAPER ROLLER BEARING HR 30211J NSK 118 P07910118 SET SCREW M8-1.25 X 6 156 P07910156 SPANNER NUT 119 P07910119 GEAR 83T 157 P07910157 KEY 5 X 5 X 8 120 P07910120 O-RING 17 X 2.65 158 P07910158 OUTBOARD BEARING COVER GASKET 121 P07910121 GEAR SHAFT 160 P07910160 OUTBOUND SPINDLE BEARING COVER 122 P07910122 INT RETAINING RING 47MM 161 P07910161 CAP SCREW M8-1.25 X 12 123 P07910123 COMBO GEAR 40T/45T 162 P07910162 OIL SEAL PD20 X 45 X 10 125 P07910125 EXT RETAINING RING 20MM 163 P07910163 SPINDLE PULLEY 126 P07910126 BUSHING 164 P07910164 FENDER WASHER 6MM 127 P07910127 SPACER C5 X 20 STEEL 165 P07910165 PULLEY SHAFT COVER 128 P07910128 COMBO GEAR 45T/40T 166 P07910166 PULLEY SHAFT COVER GASKET 129 P07910129 FLAT WASHER 6MM 167 P07910167 SPINDLE PULLEY SHAFT SPACER 130 P07910130 CAP SCREW M6-1 X 16 168 P07910168 KEY 5 X 5 X 30 131 P07910131 GEAR SHAFT 169 P07910169 KEY 5 X 5 X 80 133 P07910133 GEAR SHAFT COVER (R) GASKET 170 P07910170 SPINDLE PULLEY SHAFT 134 P07910134 GEAR SHAFT COVER (R) 171 P07910171 GEAR 42T 135 P07910135 CAP SCREW M8-1.25 X 16 172 P07910172 GEAR 23T 136 P07910136 COMPRESSION SPRING 173 P07910173 GEAR 47T 137 P07910137 SPIDER BOLT SET SCREW M10-1.5 X 30 174 P07910174 HEX NUT M10-1.5 138 P07910138 CAMLOCK STUD D1-5

-104- Model G0791 (Mfd. Since 9/15) Headstock Controls

204 203

207 209 210 214 201 202 211 175 177 205 176

206 208 213 212 178

1119 186 181 1120 185 187 179 1119-1 180 187 1119-2 182 188 183 1119-5 189 184 191 193 187 1119-4 192 180 190 194 1118 1120 1117 195 1123 1116

1119-6 196 1124 1109 1108 1106 1110 198 1108 1103 1115 199 1114 1110 1100 1107 1104 1101 1113 1102 1111 1112

Model G0791 (Mfd. Since 9/15) -105- Headstock Controls Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 175 P07910175 OIL FILL PLUG 3/4" NPT PLASTIC 210 P07910210 PIVOT ARM 176 P07910176 HEADSTOCK TOP COVER 211 P07910211 SHAFT 177 P07910177 CAP SCREW M6-1 X 25 212 P07910212 GEAR 40T 178 P07910178 HEADSTOCK TOP COVER GASKET 213 P07910213 KEY 5 X 5 X 30 179 P07910179 ROLL PIN 5 X 30 214 P07910214 EXT RETAINING RING 35MM 180 P07910180 EXT RETAINING RING 12MM 1100 P07911100 CAP SCREW M12-1.75 X 30 181 P07910181 SPINDLE SPEED SHIFTING ARM 1101 P07911101 PHLP HD SCR M3-.5 X 6 182 P07910182 SPINDLE SPEED SHIFTING FORK 1102 P07911102 HEADSTOCK CONTROL PLATE 2-PC ASSY 183 P07910183 SET SCREW M8-1.25 X 16 1103 P07911103 SET SCREW M6-1 X 12 184 P07910184 HEX NUT M8-1.25 1104 P07911104 SPINDLE SPEED HANDLE M8-1.25 X 40 185 P07910185 ROLL PIN 5 X 25 1106 P07911106 SPINDLE SPEED HANDLE HUB 186 P07910186 GEAR 38T 1107 P07911107 ARROW PLATE 46MM 187 P07910187 O-RING 11.2 X 2.65 1108 P07911108 STEEL BALL 6MM 188 P07910188 PINION SHAFT 1109 P07911109 COMPRESSION SPRING 1.2 X 4.8 X 27 189 P07910189 KEY 5 X 5 X 8 1110 P07911110 SET SCREW M8-1.25 X 8 190 P07910190 SHAFT 1111 P07911111 ROLL PIN 5 X 40 191 P07910191 LOCK COLLAR 1112 P07911112 FEED DIRECTION HANDLE M10-1.5 X 10 192 P07910192 FEED DIRECTION SHIFTING ARM 1113 P07911113 FEED DIRECTION INFORMATION PLATE 193 P07910193 FEED DIRECTION SHIFTING FORK 1114 P07911114 COMPRESSION SPRING 1 X 5 X 16 194 P07910194 SPINDLE SPEED SHAFT 1115 P07911115 FEED DIRECTION HANDLE HUB 195 P07910195 CAP SCREW M6-1 X 10 1116 P07911116 HEADSTOCK OIL DRAIN PLUG 3/8" NPT 196 P07910196 CAP SCREW M8-1.25 X 30 1117 P07911117 SET SCREW M6-1 X 10 198 P07910198 OIL SIGHT GLASS M20-1.5 1118 P07911118 SET SCREW M6-1 X 6 199 P07910199 FLAT WASHER 12MM 1119 P07911119 END GEAR COVER 201 P07910201 CAP SCREW M6-1 X 12 1119-1 P07911119-1 SPIDER SAFETY COVER 202 P07910202 GEAR FLAT WASHER 6MM 1119-2 P07911119-2 SPIDER COVER KNOB BOLT M16-2.0 203 P07910203 GEAR 40T 1119-4 P07911119-4 STUD-FT M10-1.5 X 35 W/NUTS 204 P07910204 KEY 5 X 5 X 30 1119-5 P07911119-5 END GEAR COVER TOP BOLT M10-1.5 X 78 205 P07910205 CAP SCREW M6-1 X 12 1119-6 P07911119-6 STUD-DE M10-1.5 X 122 30RH 206 P07910206 COMBO GEAR FLAT WASHER 6MM 1120 P07911120 KNURLED KNOB M10-1.5 207 P07910207 COMBO GEAR 86T/91T 1123 P07911123 E-CLIP 15MM 208 P07910208 BALL BEARING 6202ZZ 1124 P07911124 HEX NUT M10-1.5 209 P07910209 BUSHING 42 X 25 X 17MM

-106- Model G0791 (Mfd. Since 9/15) Quick-Change Gearbox

320 301 316 318 302 304

314 315 306 375 308 304 313 310 312 322 304 311 309 325 305 351 350 306 324 310 349 326 327 333 348 374 332 373 309 331 334 347 328 346 355 329 330 345 342 344 354 337 316 352 353 371 340 356 336 372 335 362 358 370

363 357 368 364 359 366

356 367 369 365

Model G0791 (Mfd. Since 9/15) -107- Quick-Change Gearbox Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 301 P07910301 LONGITUDINAL LEADSCREW 342 P07910342 COMBO GEAR 3PC SET 302 P07910302 ROLL PIN 5 X 36 344 P07910344 GEAR 16T 304 P07910304 THRUST BEARING 8103 345 P07910345 GEAR 18T 305 P07910305 LEADSCREW CONNECTOR 346 P07910346 GEAR 19T 306 P07910306 KEY 5 X 5 X 14 347 P07910347 GEAR 20T 308 P07910308 GEAR 24T 348 P07910348 GEAR 22T 309 P07910309 HEX NUT M12-1.75 349 P07910349 GEAR 24T 310 P07910310 GEAR FLAT WASHER 12MM 350 P07910350 GEAR 26T 311 P07910311 CAP SCREW M6-1 X 16 351 P07910351 GEAR 28T 312 P07910312 END CAP 352 P07910352 GEAR 24T 313 P07910313 KEY 5 X 5 X 30 353 P07910353 SHAFT 314 P07910314 KEY 5 X 5 X 10 354 P07910354 KEY 5 X 5 X 75 315 P07910315 SHAFT 355 P07910355 KEY 5 X 5 X 40 316 P07910316 BUSHING 356 P07910356 BALL BEARING 6002-2RS 318 P07910318 COMBO GEAR 32T/16T 357 P07910357 GEAR 16T 320 P07910320 COMBO GEAR 32T/16T 358 P07910358 GEAR 32T W/BUSHING 322 P07910322 FEED SELECTION HANDLE 359 P07910359 QUICK-CHANGE SHIFT LEVER 324 P07910324 HEX BOLT M10-1.5 X 30 362 P07910362 KEY 5 X 5 X 32 325 P07910325 FEED SELECTION HUB 363 P07910363 SHIFT ROD 326 P07910326 ROLL PIN 5 X 40 364 P07910364 HEX NUT M6-1 327 P07910327 GEARBOX CASTING 365 P07910365 SHAFT 328 P07910328 QUICK-CHANGE SELECTION PLATE 366 P07910366 SHAFT 329 P07910329 CAP SCREW M6-1 X 16 367 P07910367 EXTENSION SPRING 330 P07910330 SHAFT 368 P07910368 SPRING RETAINER 331 P07910331 E-CLIP 13MM 369 P07910369 SPRING HOUSING 332 P07910332 SHIFT PIVOT 370 P07910370 SHAFT 333 P07910333 ROLL PIN 4 X 30 371 P07910371 SET SCREW M8-1.25 X 8 334 P07910334 SHIFT FORK 372 P07910372 GEAR 15T 335 P07910335 CAP SCREW M6-1 X 12 373 P07910373 GEAR 24T 336 P07910336 GEAR FLAT WASHER 6MM 374 P07910374 SHAFT 337 P07910337 GEAR 16T 375 P07910375 FEED ROD 340 P07910340 COMBO GEAR 32/16T

-108- Model G0791 (Mfd. Since 9/15) Apron

421 422 466 463 461 459 465 464

458

456

452A 454 412 409 455 411 410 453 451-1 408 467 452 407 448 468 471 451 406 418 402 403 405 419 414 401 450 413 449 419-1 469 472 434 415 470 435 417 423 420-1 433 428 420 432 437 424 426 436 444 431 425 443 430 429 440 442 447 427 438

439 441 445

Model G0791 (Mfd. Since 9/15) -109- Apron Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 401 P07910401 HANDWHEEL HANDLE M8-1.25 X 8 436 P07910436 SAFETY SHIFTER SHAFT 402 P07910402 CARRIAGE HANDWHEEL 437 P07910437 SAFETY SHIFTER 403 P07910403 GRADUATED DIAL 438 P07910438 SET SCREW M8-1.25 X 6 405 P07910405 SET SCREW M6-1 X 20 439 P07910439 COMPRESSION SPRING 406 P07910406 HANDWHEEL BRACKET 440 P07910440 STEEL BALL 6MM 407 P07910407 GEAR SHAFT 12T W/KEYWAY 441 P07910441 HALF NUT LEVER HUB 408 P07910408 CASTING PLUG 442 P07910442 ROLL PIN 6 X 40 409 P07910409 ROLL PIN 5 X 30 443 P07910443 HALF NUT DOG 410 P07910410 GEAR 50T 444 P07910444 SET SCREW M8-1.25 X 30 411 P07910411 EXT RETAINING RING 19MM 445 P07910445 HALF NUT LEVER M8-1.25 X 8 155L 412 P07910412 GEAR SHAFT 11T 447 P07910447 HALF NUT LEVER SHAFT 413 P07910413 GEAR 48T 448 P07910448 CAP SCREW M6-1 X 65 414 P07910414 GEAR 51T 449 P07910449 CAP SCREW M6-1 X 15 415 P07910415 ROLL PIN 5 X 30 450 P07910450 GEAR 16T 417 P07910417 WORM SHAFT 451 P07910451 CAP SCREW M6-1 X 60 BLK C12.9 USA 418 P07910418 END CAP 451-1 P07910451-1 SLEEVE 419 P07910419 GEAR 25T 452 P07910452 THREAD DIAL BODY 419-1 P07910419-1 SPACER 452A P07910452A THREAD DIAL ASSEMBLY 420 P07910420 SHAFT 453 P07910453 THREAD DIAL 420-1 P07910420-1 GEAR 24T 454 P07910454 HEX NUT M6-1 421 P07910421 WORM GEAR 455 P07910455 SET SCREW M6-1 X 16 422 P07910422 KEY 5 X 5 X 45 456 P07910456 HALF NUT 2-PC 423 P07910423 ROLL PIN 5 X 24 458 P07910458 CAP SCREW M6-1 X 25 424 P07910424 GEAR 14T 459 P07910459 HALF NUT GIB 425 P07910425 CASTING PLUG 461 P07910461 SHAFT 426 P07910426 GEAR SHAFT 10T 463 P07910463 GEAR 25T 427 P07910427 FEED SELECTION LEVER M8-1.25 X 8 464 P07910464 SET SCREW M6-1 X 6 428 P07910428 ROLL PIN 5 X 24 465 P07910465 APRON HOUSING 429 P07910429 STEEL BALL 6MM 466 P07910466 WORM BRACKET 430 P07910430 COMPRESSION SPRING 467 P07910467 OIL SIGHT GLASS M20-1.5 431 P07910431 SET SCREW M6-1 X 8 468 P07910468 CAP SCREW M10-1.5 X 20 432 P07910432 CAP SCREW M6-1 X 45 469 P07910469 HANDWHEEL RETAINER 433 P07910433 FEED SELECTION BRACKET 470 P07910470 SET SCREW M6-1 X 20 434 P07910434 FLAT WASHER 6MM 471 P07910471 KEY 5 X 5 X 20 435 P07910435 CAP SCREW M6-1 X 40 472 P07910472 SET SCREW M6-1 X 8

-110 - Model G0791 (Mfd. Since 9/15) Saddle & Cross Slide

551

501 552 502 503

548 555

549 553 554 550 505 504

506 507 547 508 504 509 511 546 516 510 522 512 545

516 515

514 513 514 544 515 516 542 543 540 541 539 517 537 540 521 526 518 538 532 527 523 536 516 524 525 519 522 520 524 535 533 530 534 556 528

531 529

Model G0791 (Mfd. Since 9/15) -111- Saddle & Cross Slide Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 501 P07910501 T-BOLT M8-1.25 X 30 529 P07910529 CROSS SLIDE LEADSCREW 502 P07910502 COMPOUND REST MOUNTING PLATE 530 P07910530 ROLL PIN 3 X 28 503 P07910503 CROSS SLIDE CASTING 531 P07910531 KEY 5 X 5 X 10 504 P07910504 GIB SCREW 532 P07910532 COLLAR 505 P07910505 SET SCREW M6-1 X 8 533 P07910533 STEEL BALL 6MM 506 P07910506 CAP SCREW M8-1.25 X 12 534 P07910534 COMPRESSION SPRING 0.7 X 5 X 10 507 P07910507 BUSHING 535 P07910535 HANDWHEEL HANDLE 10 X 75MM 508 P07910508 CAP SCREW M6-1 X 18 536 P07910536 SET SCREW M5-.8 X 16 509 P07910509 LEADSCREW NUT 537 P07910537 BACKLASH ADJUSTMENT DISC 510 P07910510 SADDLE LOCK BOLT M8-1.25 X 55 538 P07910538 HANDWHEEL 86MM, KEYED HOLE 15MM 511 P07910511 END PLATE 539 P07910539 GRADUATED COLLAR 512 P07910512 FLAT HD SCR M8-1.25 X 12 540 P07910540 THRUST BEARING 8102 513 P07910513 SADDLE CASTING 541 P07910541 CAP SCREW M6-1 X 25 514 P07910514 BED WAY WIPER (REAR) 542 P07910542 LEADSCREW HUB 515 P07910515 BED WAY WIPER COVER (REAR) 543 P07910543 ROLL PIN 3 X 25 516 P07910516 FLAT HD SCR M5-.8 X 10 544 P07910544 TAPER PIN 5 X 45 517 P07910517 SADDLE GIB 545 P07910545 BED WAY WIPER (FRONT LEFT) 518 P07910518 SADDLE CLAMP SLIDE 546 P07910546 CAP SCREW M8-1.25 X 35 519 P07910519 HEX BOLT M8-1.25 X 25 547 P07910547 CROSS SLIDE GIB 520 P07910520 HEX NUT M6-1 548 P07910548 T-BOLT M8-1.25 X 15 521 P07910521 SET SCREW M6-1 X 16 549 P07910549 KEY 10 X 10 X 70 522 P07910522 BED WAY WIPER COVER (FRONT) 550 P07910550 CAP SCREW M3-.5 X 10 523 P07910523 BED WAY WIPER (FRONT RIGHT) 551 P07910551 HEX NUT M8-1.25 524 P07910524 HEX BOLT M8-1.25 X 20 552 P07910552 FLAT WASHER 8MM 525 P07910525 CROSS SLIDE CLAMP (RIGHT) 553 P07910553 PAD (RUBBER) 526 P07910526 OIL FILL CAP M10-1.5 X 10 554 P07910554 PAD MOUNTING PLATE 527 P07910527 CROSS SLIDE CLAMP (LEFT) 555 P07910555 CAP SCREW M5-.8 X 8 528 P07910528 GEAR 13T 556 P07910556 SHOULDER SCREW M8-1.25 X 12, 10 X 65

-112- Model G0791 (Mfd. Since 9/15) Compound Rest & Tool Holder

655 661 656 653 657 654 662 658 652 659 651

640 660 601 641 647 650 603

611 612 619 649 611 648 614 616 601 617A 602 607 642 615 604 621 620 643 618 610 644 645 663 617 664

REF PART # DESCRIPTION REF PART # DESCRIPTION 601 P07910601 GIB SCREW 644 P07910644 COMPOUND REST BASE 602 P07910602 COMPOUND REST GIB 645 P07910645 SET SCREW M6-1 X 16 603 P07910603 COMPOUND REST CASTING 647 P07910647 BALL OILER 8MM TAP-IN 604 P07910604 HEX NUT M8-1.25 648 P07910648 SET SCREW M6-1 X 8 607 P07910607 COMPOUND REST LEADSCREW NUT 649 P07910649 TOOL POST SHAFT M16-1.5 X 115 610 P07910610 COMPOUND REST LEADSCREW 650 P07910650 QUICK CHANGE TOOL POST BLOCK 611 P07910611 THRUST BEARING 8101 651 P07910651 TOOL POST BUSHING 612 P07910612 LEADSCREW HUB 652 P07910652 TOOL POST HANDLE HUB 614 P07910614 GRADUATED DIAL 653 P07910653 FLANGE NUT M16-1.5 615 P07910615 BACKLASH ADJUSTMENT DISC 654 P07910654 TOOL POST HANDLE M12-1.75 X 8 616 P07910616 COMPOUND REST HANDWHEEL 65MM DIA. 655 P07910655 HEX NUT M10-1 617 P07910617 HANDLE LARGE M5-.8 X 10 50L 656 P07910656 WAVY WASHER 10MM 617A P07910617A HANDLE SMALL M5-.8 X 10 35L 657 P07910657 KNURLED THUMB NUT M10-1 618 P07910618 SET SCREW M5-.8 X 5 658 P07910658 SET SCREW M10-1 X 70 619 P07910619 CAP SCREW M6-1 X 15 659 P07910659 SET SCREW M10-1.5 X 14 DOG-PT 620 P07910620 STEEL BALL 6MM 660 P07910660 TOOL HOLDER BODY 621 P07910621 COMPRESSION SPRING 6 X 16MM 661 P07910661 QUICK-CHANGE TOOL HOLDER ASSY 640 P07910640 PLUNGER 662 P07910662 QUICK-CHANGE TOOL POST ASSY 641 P07910641 COMPRESSION SPRING 663 P07910663 ANGLE SCALE RIVET 642 P07910642 KEY 4 X 4 X 10 664 P07910664 ANGLE SCALE 643 P07910643 FLAT WASHER 8MM

Model G0791 (Mfd. Since 9/15) -113 - Tailstock

701A

713 715 719 711 720 732 710 721 708 714 716 704 734

722 712 709 717 707 718 733 728 727 703 724 706

725 731 702 729 723 705

REF PART # DESCRIPTION REF PART # DESCRIPTION 701A P07910701A TAILSTOCK ASSEMBLY 717 P07910717 QUILL LOCK BOLT M8-1.25 X 55 702 P07910702 KEY 8 X 8 X 30 718 P07910718 LOCK SHAFT 703 P07910703 QUILL 719 P07910719 TAILSTOCK LOCK HANDLE M12-1.75 X 12 170L 704 P07910704 TAILSTOCK BODY 720 P07910720 TAILSTOCK LOCK SHAFT 705 P07910705 CLAMPING BASE 721 P07910721 ROLL PIN 5 X 30 706 P07910706 SET SCREW M10-1.5 X 50 722 P07910722 LOCK COLLAR 707 P07910707 QUILL LEADSCREW 723 P07910723 HEX BOLT M12-1.75 X 100 708 P07910708 KEY 4 X 4 X 14 724 P07910724 CLAMP SHOE 709 P07910709 THRUST BEARING 8101 725 P07910725 FLAT WASHER 12MM 710 P07910710 HANDWHEEL BRACKET 727 P07910727 QUILL LEADSCREW NUT 711 P07910711 GRADUATED DIAL 728 P07910728 CAP SCREW M4-.7 X 10 712 P07910712 CAP SCREW M6-1 X 20 729 P07910729 SET SCREW M6-1 X 30 713 P07910713 HANDWHEEL 120MM, HOLE 10MM 731 P07910731 SET SCREW M8-1.25 X 50 714 P07910714 HANDWHEEL HANDLE 10 X 75MM 732 P07910732 HANDLE BASE M12-1.75 715 P07910715 HEX NUT M10-1.5 733 P07910733 ALIGNMENT BLOCK 716 P07910716 QUILL LOCK HANDLE M10-1.5 X 10 90L 734 P07910734 SHOULDER SCREW M8-1.25 X 12, 10 X 65

-114- Model G0791 (Mfd. Since 9/15) Lathe Motor, Bed, & Stand

806-11 801 806-1 806-10 819 806-9 806-2 802 818 806-8 806-3 808 805 806-7 806-4 806-6 803 806-5 804 806 810 828 816 809 817 818 819 838 812 837 813 815 807 811 814

811 836A 820 813 836 822 823 821 836-1 834 835 829-2 819 824 819

818 829A

818 829

829-2 830 829-1 833

Model G0791 (Mfd. Since 9/15) -115 - Lathe Motor, Bed, & Stand Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 801 P07910801 COGGED V-BELT V13X795 815 P07910815 GAP INSERT 802 P07910802 SET SCREW M5-.8 X 10 816 P07910816 CAP SCREW M10-1.5 X 45 803 P07910803 KEY 8 X 8 X 60 817 P07910817 THREADED TAPER PIN 804 P07910804 FLAT WASHER 10MM 818 P07910818 CAP SCREW M6-1 X 10 805 P07910805 HEX BOLT M10-1.5 X 25 819 P07910819 FLAT WASHER 6MM 806 P07910806 MOTOR 2HP 220V 1-PH 820 P07910820 LATHE BED 806-1 P07910806-1 MOTOR FAN COVER 821 P07910821 CHIP PAN 806-2 P07910806-2 MOTOR FAN 822 P07910822 BED RACK 806-3 P07910806-3 MOTOR JUNCTION BOX 823 P07910823 RIVET 2 X 5MM NAMEPLATE, STEEL 806-4 P07910806-4 MOTOR TERMINAL BLOCK 3P 824 P07910824 INFORMATION PLATE 806-5 P07910806-5 MOTOR CAPACITOR COVER 828 P07910828 MOTOR MOUNT SPACER BLOCK 806-6 P07910806-6 S CAPACITOR 150M 250V 1-5/8 X 3-3/16 829 P07910829 RIGHT STAND 806-7 P07910806-7 R CAPACITOR 20M 450V 1-5/8 X 3-3/16 829-1 P07910829-1 RIGHT STAND DOOR 806-8 P07910806-8 BALL BEARING 6205ZZ (FRONT) 829-2 P07910829-2 DOOR LATCH 806-9 P07910806-9 BALL BEARING 6205ZZ (REAR) 829A P07910829A RIGHT STAND ASSEMBLY 806-10 P07910806-10 CENTRIFUGAL SWITCH 830 P07910830 PANEL BRACKET RIGHT 806-11 P07910806-11 CONTACT PLATE 833 P07910833 CENTER PANEL 807 P07910807 SPLASH GUARD 834 P07910834 PANEL BRACKET LEFT 808 P07910808 MOTOR PULLEY 835 P07910835 HEX NUT M6-1 809 P07910809 MOTOR MOUNT 836 P07910836 LEFT STAND 810 P07910810 HEX BOLT M10-1.5 X 30 836-1 P07910836-1 LEFT STAND DOOR 811 P07910811 ROLL PIN 5 X 25 836A P07910836A LEFT STAND ASSEMBLY 812 P07910812 FLAT WASHER 10MM 837 P07910837 FLAT WASHER 14MM 813 P07910813 CAP SCREW M6-1 X 25 838 P07910838 HEX BOLT M14-2 X 50 814 P07910814 GAP RACK

-116 - Model G0791 (Mfd. Since 9/15) Feed Rod

901

905 902

903

902 909 908 906 907V2 904 915 912 910 917

921 913 911 914 922 916

923 920

918V2 924 919V2

REF PART # DESCRIPTION REF PART # DESCRIPTION 901 P07910901 END BRACKET 913 P07910913 CAP SCREW M6-1 X 14 902 P07910902 CAP SCREW M6-1 X 11 914 P07910914 ROLL PIN 5 X 25 903 P07910903 BALL OILER 8MM TAP-IN 915 P07910915 SUPPORT BRACKET 904 P07910904 ROLL PIN 6 X 55 916 P07910916 EXT RETAINING RING 30MM 905 P07910905 SET SCREW M6-1 X 6 917 P07910917 CAP SCREW M8-1.25 X 25 906 P07910906 LOCK COLLAR 12 X 20 X 34MM 918V2 P07910918V2 CONNECTION BRACKET V2.09.15 907V2 P07910907V2 SPINDLE ROD V2.09.15 919V2 P07910919V2 SPINDLE ON/OFF SWITCH V2.09.15 908 P07910908 KEY 5 X 5 X 35 920 P07910920 CAP SCREW M4-.7 X 6 909 P07910909 ROLL PIN 4 X 20 921 P07910921 SET SCREW M6-1 X 8 910 P07910910 COMPRESSION SPRING 7020 922 P07910922 SPINDLE SWITCH ARM 911 P07910911 SPINDLE SWITCH HANDLE M10-1.5 X 16 923 P07910923 SPINDLE SWITCH BOX 912 P07910912 HANDLE BRACKET 924 P07910924 BUTTON HD CAP SCR M4-.7 X 45

Model G0791 (Mfd. Since 9/15) -117- • 1:1 Sizing (Labels are G0791 Machine Labels B actual size) (12/05/14) • Labels must be made of oil-resistant material

WARNING! To reduce risk of death or serious injury, read manual BEFORE using machine. To get a new manual, call (800) 523-4777 or go to www.grizzly.com. WARNING! IMPACT INJURY EYE/FACE INJURY PINCH HAZARD! ENTANGLEMENT Machine Labels & CosmeticsHAZARD! Remove chuck key Always wear HAZARD! ANSI-approved safety Keep hands clear of and all adjustment glasses and face shield outboard spindle and tools before when using this rotating workpiece to starting lathe. machine. avoid serious injury. CAUTION WARNING! lzzirg 63 x 38mm To reduce risk of death MODEL G0791 WARNING! IMPACTWARNIN INJURYG! or serious injury, read 70G WARNING! ENTANGLEMENT To reduce risk of death manual BEFORE using COMBINATION GUNSMITHING To reduce risk of death HAZARD or serious injury, read machine. or serious injury, read HAZARD! HAZARD! LATHE/MILL manual BEFORE using AREA! manual BEFORE using To get a new manual, call machine. Tie back long hair, roll up Avoidmachine. setting spindle (800) 523-4777 or go to Specifications WARNING! CHECKTo get aOIL new manual, call long sleeves, and remove speed too fast for www.grizzly.com. To get a new manual, call Full Load Current: 8.5A To reduce the risk of serious personal injury while using this machine: (800) 523-4777 or go to loose clothing, jewelry, or (800) 523-4777 or go to Lathe Motor: 2 HP, 220V, 1-Ph, 60 Hz 1. Read and understand manual before operating. www.grizzly.com. chuck RPM rating or WARNING! LEVEL BEFORE USING! CAUTION www.grizzly.com. Lathe Swing Over Bed: 12" 2. Always wear approved safety glasses AND a face shield. WARNING! gloves to prevent getting IMPACT INJURY Lathe Distance Between Centers: 36" 3. Only plug power cord into a grounded outlet. workpiece size/shape. WARNING! IMPACT INJURY caught in moving parts. EYE/FACE INJURY PINCH Lathe Spindle Speeds: 70–1400 RPM 4. Avoid getting entangled in rotating parts—tie back long hair, roll HAZARD! EYE/FACE INJURY PINCH This can cause IMPACT INJURY HAZARD! ENTANGLEMENT Lathe Spindle Taper: MT#5 up sleeves, and DO NOT wear loose clothing, gloves, or jewelry. HAZARD! Remove chuck key Spindle Bore: 1.57" (39.87mm) 5. Disconnect power before setting up, adjusting, or servicing. HAZARD! HAZARDENTANGLEMENT Remove chuck key rotatingEYE/FACE parts INJURY to fly PINCH Always wear HAZARD! Always wear HAZARD! and all adjustment Tailstock Taper: MT#3 6. Keep all guards and covers in place during operation. HAZARD! and all adjustment HAZARD! ENTANGLEMENT ANSI-approved safety Keep hands clear of ANSI-approved safety AREA!Keep hands clear of loose and strike Remove chuck key tools before Mill Motor: 3/4 HP, 220V, 1-Ph, 60 Hz 7. Rotate workpiece by hand to ensure clearance before starting lathe. tools before Always wear HAZARD! glasses and face shield outboard spindle and 1001 Max. Dist. Spindle to Work Table: 12" 8. Test each new workpiece setup for safe rotation; start with glasses and face shield outboard spindle and and all adjustment starting lathe. when using this starting lathe. ANSI-approved safety Keep hands clear of when using this rotating workpiece to Max. Dist. Spindle to Bed: 14-1/4" slowest speed. Stand to side of lathe until safe rotation verified. rotating workpiece to INJURY/SHOCK operator with great machine. glasses and face shield tools before machine. avoid serious injury. Mill Spindle Stroke: 2-1/4" 9. Never use hands to secure workpiece to table during operation— avoid serious injury. outboard spindle and force,when using resulting this in starting lathe. Mill Spindle Taper: R-8 use clamps or a vise. CAUTION HAZARD! rotating workpiece to Mill Spindle Speeds: 250–2300 RPM 10. Avoid positioning hands where they could slip into rotating bits REFER TO 63 x 38mm 1003 machine. avoid serious injury. WARNING! Disconnect power serious injury or WARNING! 63 x 38mm Drawbar Size: 7/16"-20 or tooling. IMPACT INJURY OWNER’S MANUALENTANGLEMENT WARNING! IMPACT INJURY Weight: 1345 lbs. 11. Always use proper feeds and speeds for operation and workpiece. before adjustments, death! ENTANGLEMENT HAZARD! HAZARD! 63 x 38mm 12. Always remove chuck keys and other tools before starting. FOR OIL TYPE AND WARNING! HAZARD! HAZARD! Tie back long hair, roll up HAZARD Avoid setting spindle maintenance, or PINCH 13. Never touch rotating lathe chuck or workpiece with hands, 1004 IMPACT INJURY Tie back long hair, roll up long sleeves, and remove ENTANGLEMENT Avoid setting spindle or try to slow or stop mill spindle with hands or tools. AREA! speed too fast for service. ENTANGLEMENT long sleeves, and remove Date loose clothing, jewelry, or HAZARD! HAZARD! speed too fast for 14. Never leave machine running unattended. gloves to prevent getting chuck RPM rating or 38 x 123.5mm loose clothing, jewelry, or Tie back long hair, roll up 15. DO NOT operate when tired or under influence of drugs or alcohol. caught in moving parts. workpiece size/shape. HAZARD! Avoid setting spindle chuck RPM rating or 209.5 x 59.5mm long sleeves, and remove gloves to prevent getting S/N 16. Do not expose to rain or use in wet locations. This can cause speed too fast for workpiece size/shape. Disconnect power before loose clothing, jewelry, or caught in moving parts. Mfd. for Grizzly in China 17. Prevent unauthorized use by children or untrained users. 102 x 102mm CAUTION rotating parts to fly 127 x 63.5mm chuck RPM rating or This can cause opening door. Stay clear gloves to prevent getting loose and strike workpiece size/shape. rotating parts to fly caught in moving parts. INJURY/SHOCK operator with great of rotating outboard This can cause loose and strike HAZARD! force, resulting in spindle. rotating parts to fly INJURY/SHOCK operator with great 1002Disconnect power serious injury or WARNING! before adjustments, loose and strike HAZARD! force, resulting in COPYRIGHT © GRIZZLY INDUSTRIAL, INC. death! FOR GRILY ACINES ONLY! DO NOT REPRODCEmaintenance, OR CANGE or TIS ARTOR PINCH INJURY/SHOCK operator with great Disconnect power serious injuryOnly or trained personnel AMOUNT. service. ENTANGLEMENT WARNING! ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If 38 x 123.5mm 63 x 38mm HAZARD! force, resulting in before adjustments, death! HAZARD! maintenance, or PINCH should operate this machine. artwork changes are required, contact us immediately at . Disconnect power serious injury or 1011 Disconnect power before WARNING! 127 x 63.5mm service. ENTANGLEMENT Fluid Capacities opening door. Stay clear before adjustments, death! 38 x 123.5mmIf safe operation procedures PINCH HAZARD! Component Capacity Type of rotating outboard maintenance, or are not clearly understood, spindle. service. ENTANGLEMENT Disconnect power before Headstock 3.5 qt. Grizzly #T23963 or ISO 32 Equivalent 38 x 123.5mm HAZARD! opening door. Stay clear get additional training before Gearbox 1 qt. Grizzly #T23962 or ISO 68 Equivalent of rotating outboard 63 x 38mm Disconnect power before Apron 0.5 qt. Grizzly #T23962 or ISO 68 Equivalent 127 x 63.5mm 17 x 19mm spindle. using. opening door. Stay clear of rotating outboard spindle. 63 x 38mm 51 x 77.5mm 31 x 98mm COLOR CODES 17 x 19mm 1005 COLOR CODES • 1:1 Sizing (Labels are 63 x 38mm G0791 Machine Labels B actual size) WARNING PANTONE 101 C or RAL 2005 COLOR CODES WARNING PANTONE 151 C or RAL 2005 • Labels must17 x 19mm be made of GRIZZLY LOGO RED PANTONE 711 C or RAL 3020 WARNING PANTONE 101 C or RAL 2005 CAUTION PANTONE 109 C (12/05/14) 32 x 35.5mm NOTICE PANTONE 3005 C or RAL 5005 CAUTION PANTONE 109 C 32 x 35.5mm COLOR CODES oil-resistant material 17 x 19mm COPYRIGHT © GRIZZLY INDUSTRIAL, INC. PANTONE 101 C or RAL 2005 COPYRIGHT © GRIZZLY INDUSTRIAL, INC. COLOR CODES FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR COPYRIGHT © GRIZZLY INDUSTRIAL, INC. ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If PANTONE 109 C 32 x 35.5mm WARNING PANTONE 101 C or RAL 2005 artwork changes are required, contact us immediately at . ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR artwork changes are required, contact us immediately at . CAUTION PANTONE 109 C WARNING! ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If 32 x 35.5mm To reduce risk ofCOPYRIGHT death © GRIZZLY INDUSTRIAL, INC. artwork changes are required, contact us immediately at . FOR GRILYor serious ACINES injury, read ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR COPYRIGHT © GRIZZLY INDUSTRIAL, INC. ITOT RITTENmanual BEFORE APPROAL! using Grizzly will not accept labels changed without approval. If

artwork changes are required, contact us immediately at . FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR To get a new manual, call ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If (800) 523-4777 or go to www.grizzly.com. artwork changes are required, contact us immediately at . WARNING! IMPACT INJURY EYE/FACE INJURY1012 PINCH HAZARD! HAZARD! ENTANGLEMENT Remove chuck key HAZARD! and all adjustment ANSI-approved safety Keep hands clear of glasses and face shield outboard spindle and tools before when using this rotating workpiece to starting lathe. avoid serious injury. • 1:1 Sizing (Labels are WARNING! 63 x 38mm G0791 Machine Labels A actual size) IMPACT INJURY ENTANGLEMENT (12/5/14) • Labels must be made of HAZARD! HAZARD! oil-resistant material Tie back long hair, roll up Avoid setting spindle long sleeves, and remove speed too fast for loose clothing, jewelry, or gloves to prevent getting chuck RPM rating or caught in moving parts. workpiece size/shape. MODEL G0791 This can cause COMBINATION GUNSMITHING rotating parts to fly LATHE/MILL loose and strike INJURY/SHOCK operator with great Specifications WARNING! G0791 MachineHAZARD! Labels C HAZARD force, resulting in Full Load Current: 8.5A To reduce the risk of serious personal injury while using this machine: Disconnect(12/05/14) power WARNING!AREA! serious injury or Lathe Motor: 2 HP, 220V, 1-Ph, 60 Hz 1. Read and understand manual before operating. before adjustments, death! Lathe Swing Over Bed: 12" 2. Always wear approved safety glasses AND a face shield. maintenance, or • 1:1 Sizing (Labels are PINCH Lathe Distance Between Centers: 36" 3. Only plug power cord into a grounded outlet. CAUTION Lathe Spindle Speeds: 70–1400 RPM 4. Avoid getting entangled in rotating parts—tie back long hair, roll actual size) ENTANGLEMENT • Labels must be made of 38 x 123.5mm Lathe Spindle Taper: MT#5 up sleeves, and DO NOT wear loose clothing, gloves, or jewelry. HAZARD! Spindle Bore: 1.57" (39.87mm) 5. Disconnect power before setting up, adjusting, or servicing. oil-resistant material HAZARD Tailstock Taper: MT#3 DisconnectAREA! power before 6. Keep all guards and covers in place during operation. Mill Motor: 3/4 HP, 220V, 1-Ph, 60 Hz 279.5 x 42mm 305 xopening 25.5mm door. Stay clear 7. Rotate workpiece by hand to ensure clearance before starting lathe. Max. Dist. Spindle to Work Table: 12" 8. Test each new workpiece setup for safe rotation; start with of rotatingCAUTION outboard Max. Dist. Spindle to Bed: 14-1/4" slowest speed. Stand to side of lathe until safe rotation verified. spindle. Mill Spindle Stroke: 2-1/4" 9. Never use hands to secure workpiece to table during operation— Mill Spindle Taper: R-8 use clamps or a vise. HAZARD Mill Spindle Speeds: 250–2300 RPM 10. Avoid positioning hands where they could slip into rotating bits 63 xAREA! 38mm Drawbar Size: 7/16"-20 or tooling. Weight: 1345 lbs. 11. Always use proper feeds and speeds for operation and workpiece. 12. Always remove chuck keys and other tools before starting. COLOR CODES CAUTION 13. Never touch rotating lathe chuck or workpiece with hands, or try to slow or stop mill spindle with hands or tools. DANGER PANTONE 485 C or RAL 3001 Date

14. Never leave machine running unattended. c.ylzzirg CAUTION PANTONE 109 C HAZARD 15. DO NOT operate when tired or under influence of drugs or alcohol. GRIZZLY BEIGE PANTONE 7527 C AREA! 17 x 19mm S/N 16. Do not expose to rain or use in wet locations. Mfd. for Grizzly in China 17. Prevent unauthorized use by children or untrained users. COLOR CODES CAUTION 100 x 155mm PANTONE 101 C or RAL 2005 HAZARD AREA! PANTONE 109 C 32 x 35.5mm CAUTION Only trained personnel should operate this machine. COPYRIGHT © GRIZZLY INDUSTRIAL,HAZARD INC. Fluid Capacities AREA! If safe operation procedures FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR 1010Component Capacity Type CHECK OIL are not clearly understood, Headstock 3.5 qt. Grizzly #T23963 or ISO 32 Equivalent 1006 ITOT RITTEN APPROAL!LEVEL Grizzly BEFORE will USING! not acceptCAUTION labels changed without approval. If artwork changes are required, contact us immediately at . get additional training before Gearbox 1 qt. Grizzly #T23962 or ISO 68 Equivalent using. Apron 0.5 qt. Grizzly #T23962 or ISO 68 Equivalent HAZARD AREA! 51 x 77.5mm 31 x 98mm REFER TO CAUTION COLOR CODES OWNER’S MANUAL FOR OIL TYPE AND HAZARD WARNING PANTONE 101 C or RAL 2005 AMOUNT. AREA! GRIZZLY LOGO RED PANTONE 711 C or RAL 3020 102 x 102mm CAUTION NOTICE PANTONE 3005 C or RAL 5005

COPYRIGHT © GRIZZLY INDUSTRIAL, INC. FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR COPYRIGHT © GRIZZLY INDUSTRIAL, INC. ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR artwork changes are required, contact us immediately at . ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If 1016 artwork changes are required, contact us immediately at . 209.5 x 59.5mm 1009 G0791 Machine Labels C ITOT RITTEN APPROAL! FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR artwork changes are required, contact us immediately at . G0791 (12/05/14) • 1:1 Sizing (Labels are

G0791 Machine Labels B actual size) COPYRIGHT © GRIZZLY INDUSTRIAL, INC. 279.5 x 42mm • Labels must be made of grizzly.comG0791 Machine Labels C (12/05/14) oil-resistant material ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If

REF PART # DESCRIPTION FOR GRILY ACINES ONLY! GRIZZLY BEIGE GRIZZLY

grizzly.com oil-resistant material • Labels must be made of actual size) • 1:1 Sizing (Labels are LEVEL BEFORE USING! • 1:1 Sizing (Labels are

artwork changes are required, contact us immediately at WARNING!

G0791 Machine Labels B actual size) G CAUTION

IMPACT INJURY DANGER

FOR OIL TYPE AND R OWNER’S MANUAL • Labels must be made of EYE/FACE INJURY PINCH HAZARD! (12/05/14) WARNHAZARD!ING! LZZI oil-resistant material G0791ENTANGLEMENT Y • 1:1 Sizing (Labels are CHECK OIL Remove chuck key (12/05/14)

1008 1001 P07911001 MACHINE ID LABEL Always wear To reduce risk of death HAZARD! G0791 Machine Labels A actual size)

and all adjustment REFER TO

AMOUNT.

COLOR CODES COLOR IEB ANSI-approved safety GNAD or serious injury, read Keep hands clear of G • Labels must be made of 102 x 102mm tools before E (12/5/14) manualglasses BEFORE and face shieldusing outboard spindle and RE oil-resistant material

when using thisCOPYRIGHT © GRIZZLY INDUSTRIAL, INC. starting lathe. PANTONE 7527 C 7527 PANTONE PANTONE 109 C machine. rotating workpiece to 3001 RAL or C 485 PANTONE machine. WARNING! To get a new manual, call avoid serious injury.

OLOC To reduce risk of death AP

(800) 523-4777 or go to R or serious injury, read

NAP

www.grizzly.com. T manual BEFORE using OT 1002 P07911002 STOP OIL FILL TAG O

WARNING! 63 x 38mm O machine. MODEL G0791 D Grizzly will not accept labels changed without approval. DO NOT REPRODCE OR CANGE TIS ARTOR IMPACT INJURY To get a new manual, call COMBINATION GUNSMITHING

ENTANGLEMENT oil-resistant material • Labels must be made of actual size) • 1:1 Sizing (Labels are 7 EN

4 EN (800) 523-4777 or go to SE

8 www.grizzly.com.

HAZARD! HAZARD! 25 LATHE/MILL

5 C

7 WARNING!

Grizzly #T23962 or ISO 68 Equivalent Tie back long hair, roll up Avoid setting spindle C o 305 x 25.5mm r Specifications long sleeves, and remove speed too fast for IMPACT INJURY WARNING!

loose clothing, jewelry, or AR EYE/FACE INJURY PINCHFull Load Current: 8.5A HAZARD!To reduce the risk of serious personal injury while using this machine: 1003 P07911003 IMPACT INJURY WARNING LABEL chuck RPM rating or L HAZARD! ENTANGLEMENT gloves to prevent getting Lathe Motor: 2 HP, 220V, Remove1-Ph, 60 Hzchuck 1.key Read and understand manual before operating. Always wear HAZARD! workpiece size/shape. ANSI-approved safetyG0791 Lathe Swing Over Bed: 12"and all adjustment 2. Always wear approved safety glasses AND a face shield. caught in moving parts. Keep hands clear of 1003 tools before This can cause glasses and face shield outboard spindleLathe and Distance Between Centers: 36" 3. Only plug power cord into a grounded outlet. when using this rotating workpieceLathe Spindleto Speeds: 70–1400starting RPM lathe. 4. Avoid getting entangled in rotating parts—tie back long hair, roll rotating parts to fly machine. avoid seriousLathe injury. Spindle Taper: MT#5 up sleeves, and DO NOT wear loose clothing, gloves, or jewelry. loose and strike Spindle Bore: 1.57" (39.87mm) 5. Disconnect power before setting up, adjusting, or servicing. 63 x 38mmTailstock Taper: MT#3 1007 6. Keep all guards and covers in place during operation. Apron 0.5 qt. WARNING! operator with great Mill Motor: 3/4 HP, 220V, 1-Ph,IMPACT 60 Hz INJURY 7. Rotate workpiece by hand to ensure clearance before starting lathe.

CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION ENTANGLEMENT HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD

1004 P07911004 HAZARD WARNING LABEL HAZARD! Max. Dist. Spindle to Work Table:HAZARD! 12" 8. Test each new workpiece setup for safe rotation; start with AREA! AREA! AREA! AREA! force, resulting inAREA! AREA! AREA! AREA! Tie back long hair, roll up Max. Dist. Spindle to Bed: 14-1/4" slowest speed. Stand to side of lathe until safe rotation verified. CAUTION CAUTION CAUTION CAUTION Avoid settingCAUTION spindle CAUTION CAUTION CAUTION serious injury or HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD WARNING! long sleeves, and remove Mill Spindle Stroke: 2-1/4"speed too fast for 9. Never use hands to secure workpiece to table during operation— AREA! looseAREA! clothing, jewelry, or AREA! AREA! AREA! AREA! AREA! AREA! death! Mill Spindle Taper: R-8 chuck RPM rating oruse clamps or a vise. gloves to prevent getting Mill Spindle Speeds: 250–2300 RPM 10. Avoid positioning hands where they could slip into rotating bits PINCH caught in moving parts. workpiece size/shape. Drawbar Size: 7/16"-20 ENTANGLEMENT This can cause or tooling. 38 x 123.5mm Weight: 1345 lbs. rotating parts to 11. fly Always use proper feeds and speeds for operation and workpiece. 1005 P07911005 GRIZZLY PUTTY TOUCH-UP PAINT HAZARD! loose and strike 12. Always remove chuck keys and other tools before starting. 13. Never touch rotating lathe chuck or workpiece with hands, INJURY/SHOCK operator with great Disconnect power before or try to slow or stop mill spindle with hands or tools. 127 x 63.5mm HAZARD! Date force, resulting in opening door. Stay clear Disconnect power WARNING! serious injury or 14. Never leave machine running unattended. 209.5 x 59.5mm . of rotating outboard before adjustments, death! 15. DO NOT operate when tired or under influence of drugs or alcohol. maintenance, or PINCH S/N 16. Do not expose to rain or use in wet locations.

spindle. G0791 Machine Labels C service. ENTANGLEMENTMfd. for Grizzly in China 17. Prevent unauthorized use by children or untrained users. Gearbox 38 x 123.5mm INJURY/SHOCK If Grizzly #T23962 or ISO 68 EquivalentHAZARD! 1006 P07911006 GRIZZLY GREEN TOUCH-UP PAINT Disconnect power before 127 x 63.5mm HAZARD! 63 x 38mm opening door. Stay clear 110 x 155mm

Disconnect power of rotating outboard ITOT RITTEN APPROAL! spindle. FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR before adjustments, maintenance, or 1015 63 x 38mm 1013 service. Only trained1014 personnel artwork changes are required, contact us immediately at . 1007 P07911007 MODEL NUMBER LABEL 17 x 19mm should operate this machine. If safe operation procedures Fluid Capacities 17 x 19mm COLOR CODES are not clearly understood, Component Capacity Type G0791 3.5 qt. Grizzly #T23963 or ISO 32 Equivalent COLOR CODES (12/05/14) get additional training before 1 qt. WARNING PANTONE 101 C or RAL 2005 1008 P07911008 GRIZZLY.COM LABEL WARNING PANTONE 101 C or RAL 2005 using. CAUTION PANTONE 109 C CAUTION PANTONE 109 C 32 x 35.5mm 32 x 35.5mm COPYRIGHT © GRIZZLY INDUSTRIAL, INC. Headstock 51 x 77.5mm 31 x 98mm

279.5 x 42mm grizzly.com COPYRIGHT © GRIZZLY INDUSTRIAL, INC. COLOR CODES FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR WARNING PANTONE 101 C or RAL 2005 ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If 1009 P07911009 GRIZZLY NAMEPLATE-MINI artwork changes are required, contact us immediately at • 1:1. Sizing (Labels are PANTONE 711 C or RAL 3020

Grizzly will not accept labels changed without approval. If GRIZZLY LOGO RED GRIZZLY BEIGE GRIZZLY G0791 Machine Labels B actual size) oil-resistant material • Labels must be made of actual size) • 1:1 Sizing (Labels are LEVEL BEFORE USING! (12/05/14) • LabelsNOTICE must be PANTONEmade of 3005 C or RAL 5005 oil-resistant material

CAUTION DANGER FOR OIL TYPE AND OWNER’S MANUAL COPYRIGHT © GRIZZLY INDUSTRIAL, INC. 1010 P07911010 TRAINED PERSONNEL NOTICE FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR CHECK OIL ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If

REFER TO artwork changes are required, contact us immediately at .

AMOUNT. COLOR CODES COLOR

102 x 102mm WARNING! To reduce risk of death

or serious injury, read

PANTONE 7527 C 7527 PANTONE PANTONE 109 C PANTONE 485 C or RAL 3001 RAL or C 485 PANTONE COPYRIGHT © GRIZZLY INDUSTRIAL, INC. manual BEFORE using machine. 1011 P07911011 PINCH/ENTANGLEMENT LABEL A FOR GRILY ACINES ONLY! DO NOT REPRODCE OR CANGE TIS ARTOR To get a new manual, call (800) 523-4777 or go to ITOT RITTEN APPROAL! Grizzly will not accept labels changed without approval. If www.grizzly.com. artwork changes are required, contact us immediately at .

1012 P07911012 PINCH/ENTANGLEMENT LABEL B 305 x 25.5mm 1013 P07911013 FLUID CAPACITIES LABEL CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD HAZARD AREA! AREA! AREA! AREA! AREA! AREA! AREA! AREA!

INJURY/SHOCK 1014 P07911014 ELECTRICITY LABEL LARGE HAZARD! Disconnect power before adjustments, maintenance, or 1015 P07911015 ELECTRICITY LABEL SMALL service. 1016 P07911016 OUTBOARD WARNING STRIP LABEL 1015

Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes off or becomes unreadable, the owner of this machine MUST replace it in the original location before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.

-118- Model G0791 (Mfd. Since 9/15) Electrical Components

1203-1 1204-1

26 25 24 23 22 21 20 1L1 3L2 5L3 1L1 3L2 5L3 20-21 = 110V

Relay JRS4-09/25d 110V 2A 110V 5A Relay JRS4-09/25d

A A 20-22 = 220V Transformer 6

4 2A 5A 13

20-23 = 230V 6 FR2 FR1 MTE JBK5-100VATH 5 20-24 = 240V STOP RESET 11 STOP RESET 98 97 98 97 20-25 = 380V NO 95 96 NO 95 96 NC 2A 5A NC 20-26 = 400V TC 110V 110V 8 5 8 5 30 31 32 33 E 2T1 4T2 6T3 2T1 4T2 6T3

1201 1202 1203 1204 1222

A1 A1 A1 A1 A1

A2 A2 A2 A2 A2 1205 1205 1205 1205

1L1 3L2 5L3 21NC 1L1 3L2 5L3 21NC 1L1 3L2 5L3 21NC 1L1 3L2 5L3 21NC 13NO 23NO 33NO 43NO 53NO 61NC 53NO 61NC 53NO 61NC 53NO 61NC JZC3-40d Contactor F3-11d F3-11d F3-11d F3-11d KM3 KM4 KM1 KM2 KA0 14NO24NO 34NO 44NO 54NO 62NC 54NO 62NC 54NO 62NC 54NO 62NC 2T14T2 6T3 22NC 2T14T2 6T3 22NC 2T14T2 6T3 22NC 2T14T2 6T3 22NC

A2 A2 A2 A2 1206 1206 1206 1206 1207

Ground

1208 1209 1210 1211

1217 1220 1219 1212 1214 1215 1213 1218 1216 1221

REF PART # DESCRIPTION REF PART # DESCRIPTION 1201 P07911201 TRANSFORMER MTE JBK5-100VATH 1211 P07911211 TERMINAL BLOCK 13-P 1202 P07911202 OL RELAY TIANSHUI JRS4-09/25D 4-6A 1212 P07911212 E-STOP RESET BUTTON HUI LA103 1203 P07911203 FUSE HOLDER 110V 2A 1213 P07911213 POWER START BUTTON HUI LA103 1203-1 P07911203-1 FUSE 2A 500V CERAMIC 1214 P07911214 JOG BUTTON HUI LA103 22MM BLK 1204 P07911204 FUSE HOLDER 24V 5A 1215 P07911215 MILL FWD/REV SWITCH HUI LA 103 1204-1 P07911204-1 FUSE 5A 500V CERAMIC 1216 P07911216 WORK LIGHT TERMINAL BLOCK 1205 P07911205 AUXILIARY CONTACT BLOCK TIANSHUI F3-11D 1217 P07911217 POWER LAMP HUI XD103 22MM 1206 P07911206 CONTACTOR TIANSHUI GSC1-1801 120V 1218 P07911218 WORK LIGHT ASSY 1207 P07911207 CONTACTOR TIANSHUI JZC3-40D 120V 1219 P07911219 ROCKER SWITCH KCD1 25T85 1208 P07911208 TERMINAL BLOCK 4-P 1220 P07911220 LED BULB 12V 3W BI-PIN 1209 P07911209 GROUND TERMINAL BLOCK 1221 P07911221 CORD FOR WORK LIGHT 1210 P07911210 TERMINAL BLOCK 6-P 1222 P07911222 OL RELAY TIANSHUI JRS4-09/25D 9-13A

Model G0791 (Mfd. Since 9/15) -119 - Steady Rest Follow Rest

1301 1401

1303 1302 1402 1403

1304 1305 1404 1405 1310 1309 1318 1308 1306 1406 1406A 1307 1413 1313 1307-1 1412 1407

1312 1411 1307-2 1410 1314 1311 1409 1408 1315

1316 1317

REF PART # DESCRIPTION REF PART # DESCRIPTION 1401 P07911401 FOLLOW REST ASSEMBLY 1301 P07911301 STEADY REST ASSEMBLY 1402 P07911402 KNURLED FINGER KNOB 1302 P07911302 KNURLED FINGER KNOB 1403 P07911403 SET SCREW M6-1 X 6 CONE-PT 1303 P07911303 SET SCREW M6-1 X 6 CONE-PT 1404 P07911404 BUSHING 1304 P07911304 BUSHING 1405 P07911405 FINGER ADJUSTMENT SCREW 1305 P07911305 FINGER ADJUSTMENT SCREW 1406 P07911406 FINGER SLEEVE 3" 1306 P07911306 FINGER 3" W/BEARING ASSEMBLY 1406A P07911406A FINGER 3" W/BEARING ASSEMBLY 1307 P07911307 SET SCREW M6-1 X 8 1407 P07911407 SET SCREW M6-1 X 8 1307-1 P07911307-1 SET SCREW M6-1 X 16 DOG-PT 1408 P07911408 HEX NUT M6-1 1307-2 P07911307-2 HEX NUT M6-1 1409 P07911409 SET SCREW M6-1 X 16 DOG-PT 1308 P07911308 UPPER STEADY REST CASTING 1410 P07911410 FOLLOW REST CASTING 1309 P07911309 BALL BEARING 625ZZ 1411 P07911411 CAP SCREW M8-1.25 x 35 1310 P07911310 DOWEL PIN 5 X 16 1412 P07911412 BALL BEARING 625ZZ 1311 P07911311 LOWER STEADY REST CASTING 1413 P07911413 DOWEL PIN 5 X 16 1312 P07911312 LOCK PIN 1313 P07911313 LOCK BOLT M10-1.5 X 18 1314 P07911314 HEX NUT M12-1.75 1315 P07911315 FLAT WASHER 12MM 1316 P07911316 CLAMP PLATE 1317 P07911317 T-BOLT M12-1.75 X 75 1318 P07911318 KNURLED THUMB KNOB M10-1.5

-120- Model G0791 (Mfd. Since 9/15) Mill Headstock

1518-1 1518-2 1518-3 1518

1518-4

1518-11 1518-10 1518-9 1518-8 1519 1518-5 1521

1522 1525 1526 1518-7 1518-6

1523 1512 1516 1510 1515 1520 1517 1509

1506 1504 1524 1527 1505 1514 1503 1531 1513 1528 1532 1511 1501 1533 1508 1530 1507 1529 1502 1510

REF PART # DESCRIPTION REF PART # DESCRIPTION 1501 P07911501 DOWEL PIN 5 X 45MM 1518-5 P07911518-5 BALL BEARING 6203ZZ 1502 P07911502 SPINDLE SPEED SHIFT LEVER 1518-6 P07911518-6 CENTRIFUGAL SWITCH 1503 P07911503 LEVER BASE 1518-7 P07911518-7 CONTACT PLATE 1504 P07911504 COMPRESSION SPRING 1518-8 P07911518-8 R CAPACITOR 16M 450V 1-5/8 X 3-1/8 1505 P07911505 STEEL BALL 8MM 1518-9 P07911518-9 S CAPACITOR 100M 250V 1-5/8 X 3-1/4 1506 P07911506 SPINDLE SPEED SHAFT (LEFT) 1518-10 P07911518-10 TERMINAL BLOCK 3P 1507 P07911507 SPINDLE SPEED SHAFT (RIGHT) 1518-11 P07911518-11 TAP SCREW M4 X 14 1508 P07911508 ROLL PIN 5 X 10 1519 P07911519 MILL HEADSTOCK UPPER COVER 1509 P07911509 CAP SCREW M5-.8 X 14 1520 P07911520 CAP SCREW M6-1 X 20 1510 P07911510 CAP SCREW M5-.8 X 12 1521 P07911521 CAP SCREW M8-1.25 X 20 1511 P07911511 MILL HEAD SIDE COVER (LEFT) 1522 P07911522 CAP SCREW M8-1.25 X 16 1512 P07911512 SET SCREW M6-1 X 10 DOG-PT 1523 P07911523 MILL HEADSTOCK ROTATION PLATE 1513 P07911513 EXT RETAINING RING 10MM 1524 P07911524 FLAT WASHER 10MM 1514 P07911514 SHIFTER ARM 1525 P07911525 HEX NUT M10-1.5 1515 P07911515 ROLL PIN 5 X 22 1526 P07911526 MILL HEADSTOCK SIDE COVER (RIGHT) 1516 P07911516 SHIFTER FORK (SMALL) 1527 P07911527 MILL HEADSTOCK MAIN BODY 1517 P07911517 SHIFTER FORK (LARGE) 1528 P07911528 LABEL PLATE 1518 P07911518 MOTOR 3/4HP 220V 1-PH 1529 P07911529 HEX NUT M6-1 1518-1 P07911518-1 CAPACITOR COVER 1530 P07911530 SET SCREW M6-1 X 20 DOG-PT 1518-2 P07911518-2 MOTOR JUNCTION BOX 1531 P07911531 MILL SPINDLE LOCK NUT 1518-3 P07911518-3 MOTOR FAN COVER 1532 P07911532 MILL SPINDLE LOCK SLEEVE 1518-4 P07911518-4 MOTOR FAN 1533 P07911533 MILL SPINDLE LOCK BOLT

Model G0791 (Mfd. Since 9/15) -121- Mill Headstock (Cont.)

1534 1544 1553 1535 1545 1562 1536 1546 1554 1547 1568 1537 1563 1548 1538 1564 1549 1555 1539 1569 1550 1556 1540 1565 1551 1541 1557 1566 1570 1552 1542 1540 1558 1543 1567 1571 1543 1559 1544 1560 1572 1544 1561 1573 1556

1583 1584

1580 1582

1579 1585

1577 1578 1586

1574 1575 1595 1594 1581 1593

1591 1599 1597 1589 1598 1596 1588

1592 1587 1590

-122- Model G0791 (Mfd. Since 9/15) Mill Headstock (Cont.) Parts List

REF PART # DESCRIPTION REF PART # DESCRIPTION 1534 P07911534 SNAP RING 40MM 1567 P07911567 ANGULAR CONTACT BEARING 7007 1535 P07911535 BALL BEARING 6203-OPEN 1568 P07911568 SPINDLE 1536 P07911536 INT RETAINING RING 40MM 1569 P07911569 PAN HD SCREW M5-.8 X 5 X 2.5 DOG-PT 1537 P07911537 KEY 5 X 5 X 14 1570 P07911570 SPINDLE SLEEVE 1538 P07911538 DRIVE SHAFT 1571 P07911571 SPINDLE END CAP 1539 P07911539 KEY 5 X 5 X 50 1572 P07911572 CAP SCREW M5-.8 X 10 1540 P07911540 BALL BEARING 6201-OPEN 1573 P07911573 ARBOR R8 X B16 1541 P07911541 EXT RETAINING RING 17MM 1574 P07911574 COARSE/FINE SELECTOR SHAFT 1542 P07911542 COMBO GEAR 23T/47T 1575 P07911575 WORM GEAR 30T 1543 P07911543 BEARING COVER WASHER 12MM 1577 P07911577 SPACER 1544 P07911544 EXT RETAINING RING 12MM 1578 P07911578 EXT RETAINING RING 20MM 1545 P07911545 SNAP RING 32MM 1579 P07911579 SLIDING GEAR 38T 1546 P07911546 BALL BEARING 6201-OPEN 1580 P07911580 GRADUATED COLLAR 1547 P07911547 INT RETAINING RING 32MM 1581 P07911581 THUMB SCREW M8-1.25 X 16 1548 P07911548 GEAR 21T 1582 P07911582 DOWNFEED LEVER HUB 1549 P07911549 IDLER SHAFT 1583 P07911583 DOWNFEED LEVER M12-1.75 X 12 1550 P07911550 KEY 5 X 5 X 55 1584 P07911584 SELECTOR KNOB (COARSE/FINE) 1551 P07911551 GEAR 35T 1585 P07911585 ROLL PIN 3 X 25 1552 P07911552 GEAR 45T 1586 P07911586 LOCK BLOCK 1553 P07911553 SPACER 1587 P07911587 SET SCREW M4-.7 X 4 CUP-PT 1554 P07911554 DRAWBAR 1588 P07911588 END COVER 1555 P07911555 SNAP RING 72MM 1589 P07911589 FLAT COIL SPRING 1556 P07911556 EXT RETAINING RING 35MM 1590 P07911590 SET SCREW M5-.8 X 16 CONE PT 1557 P07911557 BALL BEARING 6207-OPEN 1591 P07911591 END COLLAR 1558 P07911558 COMBO GEAR 58T/72T 1592 P07911592 FLAT HD SCR M5-.8 X 12 1559 P07911559 EXT RETAINING RING 42MM 1593 P07911593 SET SCREW M8-1.25 X 12 CONE-PT 1560 P07911560 SPINDLE SHAFT 1594 P07911594 SET SCREW M8-1.25 X 16 DOG-PT 1561 P07911561 BALL BEARING 6207-OPEN 1595 P07911595 DOWNFEED GEAR SHAFT 1562 P07911562 FLAT HD CAP SCR M8-1.25 X 16 1596 P07911596 KEY 6 X 6 X 25 1563 P07911563 SPINDLE COLLAR 1597 P07911597 KEY 6 X 6 X 20 1564 P07911564 BALL BEARING 6205-OPEN 1598 P07911598 DOWNFEED GEAR SHAFT FLANGE 1565 P07911565 SPANNER NUT M30-1.5 1599 P07911599 FLAT HD SCR M5-.8 X 14 1566 P07911566 SLEEVE

Model G0791 (Mfd. Since 9/15) -123- Column & Fine Downfeed

1606 1607 1637 1635 1601 1617 1621 1638 1616 1636 1602 1617 1618 1603 1644 1639 1640 1620 1640 1604 1605 1641 1642 1608 1643 1609 1628 1619 1611 1622 1645 1629 1613 1615 1630 1620 1610 1634 1627 1612 1632 1614 1633

1631 1623 1624

1625 1626

REF PART # DESCRIPTION REF PART # DESCRIPTION 1601 P07911601 MILL HEADSTOCK COVER 1624 P07911624 TAPER PIN W/INT THREAD 8 X 30MM 1602 P07911602 ROLL PIN 4 X 20 1625 P07911625 CAP SCREW M12-1.75 X 40 1603 P07911603 CAP SCREW M5-.8 X 60 1626 P07911626 FLAT WASHER 12MM 1604 P07911604 SET SCREW M8-1.25 X 8 CONE-PT 1627 P07911627 CAP SCREW M12-1.75 X 30 1605 P07911605 POINTER 1628 P07911628 CAP SCREW M5-.8 X 20 1606 P07911606 WORM SHAFT SLEEVE 1629 P07911629 MILL LEADSCREW NUT 1607 P07911607 WORM SHAFT 1630 P07911630 MILL LEADSCREW HOUSING 1608 P07911608 THRUST BEARING 51102 1631 P07911631 T-BOLT M10-1.5 X 35 1609 P07911609 SPANNER NUT M14-1.5 1632 P07911632 Z-AXIS LOCK NUT 1610 P07911610 GRADUATED COLLAR 1633 P07911633 Z-AXIS LOCK SLEEVE 1611 P07911611 SET SCREW M6-1 X 8 CUP-PT 1634 P07911634 Z-AXIS LOCK BOLT 1612 P07911612 HANDWHEEL 80MM, DISHED, BORE 9MM 1635 P07911635 HANDWHEEL HANDLE 10 X 75MM 1613 P07911613 ROLL PIN 3 X 14 1636 P07911636 SHOULDER SCREW M8-1.25 X 14, 10 X 65 1614 P07911614 HANDWHEEL HANDLE 7 X 40MM 1637 P07911637 CAP SCREW M5-.8 X 12 1615 P07911615 SHOULDER SCREW M6-1 X 10, 7 X 34 1638 P07911638 FENDER WASHER 5MM 1616 P07911616 TABBED WASHER 30MM 1639 P07911639 HANDWHEEL 125MM, DISHED, 12MM BORE 1617 P07911617 SPANNER NUT M30-1.5 1640 P07911640 SPANNER NUT M16-1.5 1618 P07911618 SPACER 1641 P07911641 TABBED WASHER 16MM 1619 P07911619 MILL LEADSCREW BRACKET 1642 P07911642 SPACER 1620 P07911620 THRUST BEARING 51106 1643 P07911643 THRUST BEARING 51103 1621 P07911621 ROLL PIN 5 X 16 1644 P07911644 MILL LEADSCREW 1622 P07911622 COLUMN 1645 P07911645 KEY 3 X 4 X 10 1623 P07911623 COLUMN BASE

-124- Model G0791 (Mfd. Since 9/15) SECTION 11: APPENDIX

Feed Chart Metric Threading Chart

Thread Dial Chart

INDICATOR TABLE TPISCALE TPISCALE TPI SCALE 4 1–8 13 1, 3 44 1–8 4.5 1 14 1-2-3-4 48 1–8 4.75 1 16 1–8 52 1–8 5 1, 3 18 1-2-3-4 56 1–8 5.5 1 19 1, 3 64 1–8 Inch Threading Chart 6 1-2-3-4 20 1–8 72 1–8 40T 6.5 1 22 1-2-3-4 76 1–8 7 1, 3 24 1–8 80 1–8 86T 8 1–8 26 1-2-3-4 88 1–8 9 1, 3 28 1–8 96 1–8 40T 9.5 1 32 1–8 104 1–8 10 1-2-3-4 36 1–8 112 1–8 11 1, 3 38 1-2-3-4 12 1–8 40 1–8

Model G0791 (Mfd. Since 9/15) -125-

CUT ALONG DOTTED LINE ____ 0-2 Years ____ 2-8 Years ____ 8-20 Years ____20+ Years ____20+ Years 8-20 ____ Years 2-8 ____ $70,000+ ____ Years 0-2 ____ $40,000-$49,000 ____ woodworker/metalworker? a been you have long How 5. 50-59 $60,000-$69,000 ______20-29 $30,000-$39,000 ______group? age your is What 4. $50,000-$59,000 ____ $20,000-$29,000 ____ income? household annual your is What 3. __ 0-2 ____ Grizzly? are tools or machines your of many How 6. oyutikyu ahn ersnsago au? _____Yes value? good a represents machine your think you Do 7. ol o eomn rzl nutilt red _____Yes friend? a to Industrial Grizzly recommend you Would 8. Would you allow us to use your name as a reference for Grizzly customers in your area? your in customers Grizzly for reference a as name your use to us allow you Would 9. Comments: ______10. Which of the following magazines do you subscribe to? subscribe you do magazines following the of Which 2. Deck Card ____ Advertisement ____ us? about learn you did How 1. better productsandservices. The followinginformationisgivenonavoluntarybasis.Itwillbeusedformarketingpurposestohelpusdevelop # Serial ______# Order ______# Model ______Email # Phone ______Zip State ______City Street ______Name ______PopularMechanics ____ OldHouseJournal ____ ModelAirplaneNews ____ LiveSteam ____ JournalofLightCont. ____ HomeShopMachinist ____ Handy ____ HandLoader ____ FamilyHandyman ____ Cabinetmaker&FDM ____ Note: _____Yes We neverusenamesmorethan3times. Of course,allinformationisstrictlyconfidential. __ 3-5 ______Wood ____ Today’sHomeowner ____ ShotgunNews ____ ShopNotes ____ Rifle ____ RCModeler ____ ProjectsinMetal ____ PrecisionShooter ____ PopularWoodworking ____ PopularScience ______60-69 ____ 30-39 ______Website ____ Friend ____ WARRANTY CARD __ 6-9 ______70+ ____ 40-49 ______Other: ____ Catalog ______Other: ____ Woodworker’sJournal ____ WoodworkerWest ____ Woodwork ____ Woodsmith ____ WoodshopNews ____ WoodenBoat ______10+ _____No _____No _____No FOLD ALONG DOTTED LINE

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GRIZZLY INDUSTRIAL, INC. P.O. BOX 2069 BELLINGHAM, WA 98227-2069

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TAPE ALONG EDGES--PLEASE DO NOT STAPLE WARRANTY & RETURNS

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty and any and all warranties that may be implied by law, including any merchantability or fitness, for any par- ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants. In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special, or consequential damages arising from the use of our products.

To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the carton. We will not accept any item back without this number. Proof of purchase must accompany the merchandise.

The manufacturers reserve the right to change specifications at any time because they constantly strive to achieve better quality equipment. We make every effort to ensure that our products meet high quality and durability standards and we hope you never need to use this warranty.

Please feel free to write or call us if you have any questions about the machine or the manual.

Thank you again for your business and continued support. We hope to serve you again soon.