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

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

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

D E F G H I

C J K L

B

M

A N

O U

P

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 nec- essary configuration of gearbox levers and end gears for metric threading options.

D. Emergency Stop/RESET Button: Stops all 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 neces- sary 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

O

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 car- riage 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

The information contained herein is deemed accurate as of 11/11/2018 and represents our most recent product specifications. Model G0791 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 1 OF 4

-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

Main Specifications: Lathe Info Swing Over Bed...... 12 in. Distance Between Centers...... 36 in. Swing Over Cross Slide...... 7 in. Swing Over Saddle...... 11-5/16 in. Maximum Tool Bit Size...... 5/8 in. Compound Travel...... 3-1/4 in. Carriage Travel...... 30-1/2 in. Cross Slide Travel...... 6-1/4 in. Spindle Bore...... 1.57 in. (39.87mm) Spindle Taper...... MT#5 Number Of Spindle Speeds...... 9 Spindle Speeds...... 70 – 1400 RPM Spindle Type...... D1-5 Camlock Spindle Bearings...... High-Precision Tapered Roller Spindle Length...... 17 in. Spindle Length with 3-Jaw Chuck...... 21-3/4 in. Spindle Length with 4-Jaw Chuck...... 21-1/4 in. Spindle Length with Faceplate...... 18-1/2 in. Tailstock Quill Travel...... 4 in. Tailstock Taper...... MT#3 Tailstock Barrel Diameter...... 1.563 in. Number of Longitudinal Feeds...... 40 Range of Longitudinal Feeds...... 0.0011 – 0.0310 in./rev. Number of Cross Feeds...... 40 Range of Cross Feeds...... 0.0004 – 0.0105 in./rev. Number of Inch Threads...... 40 Range of Inch Threads...... 4 – 112 TPI Number of Metric Threads...... 29 Range of Metric Threads...... 0.2 – 4.5 mm

The information contained herein is deemed accurate as of 11/11/2018 and represents our most recent product specifications. Model G0791 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 2 OF 4

Model G0791 (Mfd. Since 9/15) -9- Mill Info Mill Taper...... R-8 Mill Spindle Travel...... 2-1/4 in. Mill Swing...... 15 in. Distance Spindle To Work Table...... 12 in. Distance Spindle To Bed...... 14-1/4 in. Distance Spindle To Center Line...... 8-3/8 in. Mill Head Vertical Travel...... 11-1/2 in. Mill Head Tilt (Left/Right)...... 90 deg. Maximum Tool Bit Size...... 5/8 in. Drilling Capacity For Steel...... 5/8 in. Drilling Capacity For Cast Iron...... 3/4 in. Table Size Length...... 9-3/4 in. Table Size Width...... 5-7/8 in. Table Size Thickness...... 1-5/16 in. Number of T-Slots...... 2 T-Slot Size...... 3/8 in. T-Slot Centers...... 2-7/16 in. Drawbar Diameter...... 7/16 in. Drawbar TPI...... 20 TPI Drawbar Length...... 9-1/4 in. Number of Mill Drill Speeds...... 4 Mill Speed Range...... 250 – 2300 RPM Construction Bed...... Induction-Hardened, Precision-Ground Cast Iron Headstock...... Cast Iron Body...... Cast Iron End Gears...... Flame-Hardened Steel Stand...... Cast Iron Paint Type/Finish...... Epoxy

Other Bed Width...... 7-1/4 in. Floor To Center Height...... 46-1/4 in. Carriage Leadscrew Diameter...... 0.870 in. Carriage Leadscrew TPI...... 8 TPI Carriage Leadscrew Length...... 44 in. Cross Slide Leadscrew Diameter...... 3/8 in. Cross Slide Leadscrew TPI...... 16 TPI Cross Slide Leadscrew Length...... 9-1/2 in. Coolant System...... No

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

The information contained herein is deemed accurate as of 11/11/2018 and represents our most recent product specifications. Model G0791 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 3 OF 4

-10- Model G0791 (Mfd. Since 9/15) SECTION 1: SAFETY

Safety Instructions for Machinery

Model G0791 (Mfd. Since 9/15) -11- -12- Model G0791 (Mfd. Since 9/15) Additional Safety for Metal Lathes

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

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

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

Availability Circuit Requirements for 220V

Nominal Voltage...... 220V/240V Cycle...... 60 Hz Phase...... 1-Phase Power Supply Circuit...... 15 Amps Plug/Receptacle...... NEMA 6-15 Cord...... “S”-Type, 3-Wire, 14 AWG, 300 VAC

Full-Load Current Rating

Full-Load Current Rating at 220V..... 8.5 Amps

-16- Model G0791 (Mfd. Since 9/15) Grounding Instructions

Extension Cords Figure 6. Typical 6-15 plug and receptacle.

Minimum Gauge Size...... 14 AWG Maximum Length (Shorter is Better)...... 50 ft.

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

Preparation

The list below outlines the basic process of pre- paring your machine for operation. Specific steps are covered later in this section.

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 — Anchoring hardware as needed (see Page 25) — Precision level at least 12" long

-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 AC. Carbide-Tipped Dead Center MT#3...... 1 AD. Fasteners (Not Shown): —Hex Bolts M12-1.75 x 40...... 6 —Flat Washers 12mm...... 6 —Phillips Head Screws M6-1 x 10...... 8 —Hex Nuts M6-1...... 4 —Flat Washers 6mm...... 8

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 —Gear 50-tooth...... 1 —Gear 60-tooth...... 1 —Gear 86/91-tooth (Installed)...... 1 V. Drill Chuck Arbor R8 x B16...... 1 W. Spindle Sleeve R8 x MT3...... 1 X. Spindle Sleeve MT5 x MT3...... 1

Model G0791 (Mfd. Since 9/15) -19- Cleanup

T23692—Orange Power Degreaser A great product for removing the waxy shipping grease from your machine during clean up.

Figure 9. T23692 Orange Power Degreaser.

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

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 assis- tance and a forklift with two lifting straps, lift- ing chain, and a safety hook rated for at least 2000 lbs. each.

4. Move lathe to its prepared location while it is still attached to shipping pallet.

5. Unbolt lathe from shipping pallet.

6. Attach handles to cross slide and carriage handwheels (see Figure 12). Assembling the Model G0791 consists of build- ing 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 iden- tify 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 pre- vent 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 nec- essary, 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

For accurate turning results and to prevent warping cast iron bedways, lathe bedways MUST be leveled from side to side and from front to back on both ends.

Recheck bedways 24 hours after installation, two weeks after that, and then annually to make sure they remain level.

Leveling machinery helps precision components, such as bedways, remain straight and flat during the lifespan of the machine. Components on a machine that is not level may slowly twist due to the dynamic loads placed on the machine during operation. Anchoring to Concrete Floors If needed, use metal shims between the lathe bed and chip pan when leveling the machine.

For best results, use a precision level that is at least 12" long and sensitive enough to show a distinct movement when a 0.003" shim (approxi- 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 precision level offered by Grizzly.

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

Electrocution or fire may occur if machine is ungrounded, incorrectly connected to power, or connected to an undersized circuit. Use an electrician or a qualified service personnel to ensure a safe 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 infor- mation. 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 tight- ened 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 34).

Note: If chuck is not installed on lathe, you do not need to install one for this test. The test run consists of verifying the following: 1) The motor powers up and runs correctly, 2) the 2. Make sure spindle lever is in OFF (center) emergency stop/RESET button safety feature position (see Figure 24). works correctly. 3. To ensure carriage components do not unex- pectedly move during following steps, disen- gage half nut lever and apron feed selection lever (see Figure 24).

Half-Nut Lever Spindle Lever is Pulled Up (OFF, Center (Disengaged) Position)

Feed Selection Lever is Horizontal (Disengaged)

Cross Slide Disengaged Disengaged Carriage Halfnut Lever Feed Selection Lever Engaged Figure 24. Disengaging carriage components.

4. Rotate Emergency Stop/RESET button clock- wise 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 head- stock (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.

— When operating correctly, machine will 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 correcting potential problems.

13. Move Mill FWD/REV switch to "Mill" position (see Figure 25 on Page 29) to turn mill OFF.

14. Move Mill FWD/REV switch to REV position, repeat Step 12, then push Emergency Stop/ RESET button to turn mill OFF.

15. Without resetting Emergency Stop/RESET button, try to restart spindle rotation, as instructed in Step 12. Spindle should not start.

— If spindle rotation does start with RESET button pressed in, RESET button safety is 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 Page 28. Congratulations! The test run is complete. Perform 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 com- plete. 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- able for turning, then securely mounts it in lathe.

2. Installs tooling, aligns it with workpiece, then backs it away to establish a safe startup clearance.

3. Removes all setup tools from lathe.

4. Checks for safe clearances by rotating workpiece by hand at least one full revolution.

5. Moves slides to where they will be used dur- ing operation.

6. Sets correct spindle speed for operation.

7. If using power feed, selects proper feed rate for the operation.

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.

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

Figure 27. Examples of common devices used during chuck installation and removal. Model G0791 (Mfd. Since 9/15) -33- Chuck Installation

Figure 29. Cam line positioned between the "V" marks after the camlocks are fully tightened.

Figure 28. Inserting camlock studs into spindle cam holes.

Figure 30. Correcting an improperly installed stud.

-34- Model G0791 (Mfd. Since 9/15) Chuck Removal

Registration Marks Figure 32. Camlock is fully loosened when the cam line is aligned with the spindle mark.

Figure 31. Registration mark locations.

Model G0791 (Mfd. Since 9/15) -35- Scroll Chuck Chuck Jaw Reversal Clamping

Figure 34. Reversing the chuck jaws.

Figure 33. Jaw selection and workpiece holding.

-36- Model G0791 (Mfd. Since 9/15) 4-Jaw Chuck

Figure 35. 4-jaw tightening sequence.

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

Model G0791 (Mfd. Since 9/15) -37- Faceplate

Non-Cylindrical Workpiece

Clamp

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"

Increments on Quill Inch ...... 0"–4 " in 0.100" Increments

Positioning Tailstock

Optional: To precisely secure the tailstock, mount 1 a ⁄2" drive torque wrench in the square drive shown in Figure 38, then tighten the tailstock to 40 lb/ft of torque. The center point will be drawn down as much as 0.006". Do not exceed the max torque or damage to ways and tailstock will occur.

Using Quill Quill Lock Tailstock Lock Lever Lever

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

Solid Screw Tang Open Solid End End End End

Figure 39. Types of tapered arbors and tooling.

Tang

Removing Tooling

Figure 40. Example photos of inserting tools with tangs into the tailstock.

Drift Key Slot

Figure 41. Drift key slot in the side of the quill.

-40- Model G0791 (Mfd. Since 9/15) Offsetting Tailstock Aligning Tailstock to Spindle Centerline

Items Needed Qty Hex Wrench 4mm...... 1 Adjustment Round Stock 2" x 6"...... 2 Set Screw Precision Level...... 1 (1 of 2) Offset Indicator

Figure 42. Left offset adjustment.

Tools Needed Qty Hex Wrench 4mm...... 1

Figure 44. Turning a dead center.

Figure 43. Set screw adjustment in relation to tailstock movement.

Model G0791 (Mfd. Since 9/15) -41- Figure 45. Example of stock mounted between centers on a typical lathe. Figure 46. Adjust tailstock toward the operator.

Figure 47. Adjust tailstock away from the operator.

-42- Model G0791 (Mfd. Since 9/15) Centers Live Centers

Figure 48 shows the MT#3 dead centers and 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.

Adapter Dead Sleeve Center Live Center

Carbide-Tipped Dead Center

Figure 48. Adapter sleeve and centers.

Dead Centers

Dead Center

Lathe Dog

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

Note: The maximum quill travel is 4", but we do not recommend extending the quill more than 2" or stability and accuracy will be reduced.

Mounting Center in Tailstock

Carbide-Tipped Dead Center

Removing Center from Tailstock

Figure 50. Example of using a carbide-tipped dead center installed in the tailstock.

Drift Key Slot

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 & Arbor

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

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

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.

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 center- line 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 compound rest is used to move the tool toward and away from the workpiece at the preset angle of the compound rest. The base of the com- pound rest has graduated scale used for setting 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

Location For Reference Mark

Figure 59. Using an angle gauge to set compound rest to 60° for threading.

Tool Post

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 Steel Shims...... As Needed Cutting Tool...... 1 Fine Ruler...... 1 Tailstock Center...... 1

Figure 61. Cutting tool aligned with spindle centerline (viewed from tailstock).

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 spi- der 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 gradu- ated 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 nine spindle speeds.

Numeric Alpha Lever Lever

Determining Spindle Speed

Figure 66. Spindle speed levers.

The spindle speed levers control the gear configu- ration in the headstock to produce the selected spindle speed.

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.

The chart below shows the various combinations of lever positions for achieving a desired speed.

Spindle Speed RPM

I II III

A 270 1400 800

B 70 360 220

C 200 1000 600

Figure 67. Spindle speed chart.

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 some- times 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 lock- out 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 rota- tion. The center position is neutral and nei- ther 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 com- ponent 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 dis- plays 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 spin- dle, 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" posi- tion 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 thread- ing. 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 thread- ing 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 slow- est 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

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

4

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 longevity of machine, always start spindle rotation with spindle speed dial set to low- est setting.

To complete a typical operation, the operator does the following:

1. Examines workpiece to make sure it is suit- able for cutting.

2. Securely clamps workpiece to table.

3. With machine disconnected from power, installs correct cutting tool.

4. Adjusts headstock height above table.

5. Checks range of table or spindle movement necessary for operation to make sure setup is 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.

-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 appli- cations, 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 spin- dle 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 move- ment, rotate fine downfeed handwheel clock- wise 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 (lon- gitudinal), 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

A

C

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 spin- dle 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 rota- tion.

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 maximiz- ing 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 RPM. Figure 112 illustrates spindle speed set at 250 RPM.

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, pro- vide 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 Our Clamping Kits are among the best in the world! All the blocks, bolts, nuts and hold-downs are case hardened. Each clamping kit includes: (24) studs (four studs each: 3", 4", 5", 6", 7", and 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 the wall or side of machine for easy access.

T10556—Taper Attachment Kit for G0791 This taper attachment provides precision outside and inside tapers up to 12" without having to off- set the tailstock. Can be used without disengag- ing 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.

-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.

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 indepen- dently 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 conve- nient 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, hori- zontal, 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.

-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.

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

Daily, After Operations • Press the Emergency Stop/RESET button (to prevent accidental startup). • Vacuum/clean all chips and swarf from bed, slides. • Wipe down all unpainted or machined sur- 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 transmis- sion. 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 lubrica- tion 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 sur- face 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 reconnect- ing 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 spir- its 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 pro- cedures, 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

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 gradu- ated 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 face- plate 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 begin- ning 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 machin- ists 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 move- ment 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 compo- nents 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 workpieces. The gap was seated, preloaded, and then ground for precise bedway mating and align- ment 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 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 span- ner 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 bear- ing 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

Wiring Safety Instructions

-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

U2

Z2W2 U2 V2

U1

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

Accessories

1-2 2 3 4

1

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

14

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 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

-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 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

-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 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

-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 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

-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 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 Model23 P07910023 G0791 (Mfd.LIVE Since CENTER 9/15) MT#3 46 P07910046 SPINDLE SLEEVE MT#3-MT#2 -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 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 -114-20 P07910020 HEX WRENCH 4MM 43 P07910043 WRENCHModel 17 G0791 X 19MM (Mfd.OPEN-ENDS Since 9/15) 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 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 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

-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 GRIZZLY MACHINES ONLY! DO NOT REPRODUCEmaintenance, OR CHANGE or THIS ARTWORK PINCH INJURY/SHOCK operator with great Disconnect power serious injuryOnly or trained personnel AMOUNT. service. ENTANGLEMENT WARNING! WITHOUT WRITTEN APPROVAL! 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 [email protected]. 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 GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK COPYRIGHT © GRIZZLY INDUSTRIAL, INC. WITHOUT WRITTEN APPROVAL! 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 [email protected]. WITHOUT WRITTEN APPROVAL! Grizzly will not accept labels changed without approval. If FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK artwork changes are required, contact us immediately at [email protected]. CAUTION PANTONE 109 C WARNING! WITHOUT WRITTEN APPROVAL! 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 [email protected]. FOR GRIZZLYor serious MACHINES injury, read ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK COPYRIGHT © GRIZZLY INDUSTRIAL, INC. WITHOUT WRITTENmanual BEFORE APPROVAL! using Grizzly will not accept labels changed without approval. If

artwork changes are required, contact us immediately at [email protected]. FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK To get a new manual, call WITHOUT WRITTEN APPROVAL! 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 [email protected]. 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 GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK 1010Component Capacity Type CHECK OIL are not clearly understood, Headstock 3.5 qt. Grizzly #T23963 or ISO 32 Equivalent 1006 WITHOUT WRITTEN APPROVAL!LEVEL Grizzly BEFORE will USING! not acceptCAUTION labels changed without approval. If artwork changes are required, contact us immediately at [email protected]. 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 GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK COPYRIGHT © GRIZZLY INDUSTRIAL, INC. WITHOUT WRITTEN APPROVAL! Grizzly will not accept labels changed without approval. If FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK artwork changes are required, contact us immediately at [email protected]. WITHOUT WRITTEN APPROVAL! Grizzly will not accept labels changed without approval. If 1016 artwork changes are required, contact us immediately at [email protected]. 209.5 x 59.5mm 1009 G0791 Machine Labels C WITHOUT WRITTEN APPROVAL! FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK artwork changes are required, contact us immediately at [email protected] . G0791 (12/05/14) • 1:1 Sizing (Labels are

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

1 P07910001 4-JAW INDEPENDENT CHUCK ASSY 24 P07910024 DEAD CENTER MT#3 CARBIDE TIPPED FOR GRIZZLY MACHINES 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!

1-1 P07910001-1 4-JAW INDEPENDENT CHUCK BODY 8" 25 P07910025 DEAD CENTER MT#3 HSS 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 1-2 P07910001-2 4-JAW CHUCK REVERSIBLE JAW 26 P07910026 DRILL CHUCK ARBOR R-8/B16 • 1:1 Sizing (Labels are CHECK OIL Remove chuck key (12/05/14)

1008 ToAlways reduce wear 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) 2 P07910002 FACEPLATE 10" D1-5 27 P07910027 SPINDLE SLEEVE MT#5-MT#3 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

3 P07910003 BOTTLE FOR OIL 28 P07910028 QUICK-CHANGE TOOL HOLDER ASSY N

C

www.grizzly.com. T manual BEFORE using

OT O

WARNING! 63 x 38mm O machine. MODEL G0791 D Grizzly will not accept labels changed without approval. DO NOT REPRODUCE OR CHANGE THIS ARTWORK 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 4 P07910004 TOOLBOX 29 P07910029 GEAR 45T 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 6 P07910006 CHUCK WRENCH 4-JAW 30 P07910030 GEAR 27T 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: gloves to prevent getting chuck RPM rating or L HAZARD! ENTANGLEMENTLathe 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 7 P07910007 CHUCK WRENCH 3-JAW 31 P07910031 GEAR 50T 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. 9 P07910009 WRENCH 12 X 14MM OPEN-ENDS 32 P07910032 GEAR 26T 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 [email protected] 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 10 P07910010 WRENCH 10 X 12MM OPEN-ENDS 33 P07910033 GEAR 35T 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 11 P07910011 WRENCH 9 X 11MM OPEN-ENDS 34 P07910034 GEAR 60T 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. HAZARD! loose and strike 12. Always remove chuck keys and other tools before starting. 13. Never touch rotating lathe chuck or workpiece with hands, Disconnect power before INJURY/SHOCK operator with great 12 P07910012 DRILL CHUCK B16 3-16MM 35 P07910035 TAILSTOCK WRENCH 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 13 P07910013 DRILL CHUCK KEY 5/16" STD 11T SD-5/8" 36 P07910036 3-JAW CHUCK ASSY 6" D1-5 SCROLL 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! HAZARD! 63 x 38mm 127 x 63.5mm Disconnect power before 110 x 155mm 14 P07910014 SCREWDRIVER PHILLIPS #2 36-1 P07910036-1 3-JAW CHUCK TOP JAW SET opening door. Stay clear Disconnect power of rotating outboard WITHOUT WRITTEN APPROVAL! spindle. FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK before adjustments, maintenance, or 15 P07910015 SCREWDRIVER FLAT #2 36-2 P07910036-2 3-JAW CHUCK BOTTOM JAW SET 1015 63 x 38mm 1013 service. Only trained1014 personnel artwork changes are required, contact us immediately at [email protected] . 17 x 19mm should operate this machine. 16 P07910016 HEX WRENCH 10MM 36-3 P07910036-3 3-JAW CHUCK BODY 6" 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 17 P07910017 HEX WRENCH 8MM 40 P07910040 GEAR 36T (12/05/14) get additional training before 1 qt. WARNING PANTONE 101 C or RAL 2005 WARNING PANTONE 101 C or RAL 2005 using. CAUTION PANTONE 109 C 18 P07910018 HEX WRENCH 6MM 41 P07910041 CAMLOCK STUD D1-5 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 19 P07910019 HEX WRENCH 5MM 42grizzly.com P07910042 CAP SCREW M8-1.25 X 16 COPYRIGHT © GRIZZLY INDUSTRIAL, INC. COLOR CODES FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK WARNING PANTONE 101 C or RAL 2005 WITHOUT WRITTEN APPROVAL! Grizzly will not accept labels changed without approval. If • 1:1 Sizing (Labels are artwork changes are required, contact us immediately at [email protected]. PANTONE 711 C or RAL 3020 20 P07910020 HEX WRENCH 4MM 43Grizzly will not accept labels changed without approval. If P07910043 WRENCH 17 X 19MM OPEN-ENDS 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 21 P07910021 HEX WRENCH 2MM 44 P07910044 WRENCH 22 X 24MM OPEN-ENDS oil-resistant material

CAUTION DANGER FOR OIL TYPE AND OWNER’S MANUAL COPYRIGHT © GRIZZLY INDUSTRIAL, INC. 22 P07910022 SPIDER BOLT W/NUT M10-1.5 X 38 45 P07910045 SPINDLE SLEEVE R8-MT#3 FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK CHECK OIL WITHOUT WRITTEN APPROVAL! Grizzly will not accept labels changed without approval. If

REFER TO artwork changes are required, contact us immediately at [email protected].

AMOUNT. COLOR CODES COLOR

102 x 102mm WARNING! 23 P07910023 LIVE CENTER MT#3 46 P07910046 SPINDLE SLEEVE MT#3-MT#2 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. FOR GRIZZLY MACHINES ONLY! DO NOT REPRODUCE OR CHANGE THIS ARTWORK To get a new manual, call (800) 523-4777 or go to WITHOUT WRITTEN APPROVAL! Grizzly will not accept labels changed without approval. If www.grizzly.com. artwork changes are required, contact us immediately at [email protected]. 305 x 25.5mm 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 HAZARD! Disconnect power before adjustments, maintenance, or service. 1015

-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 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 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 -119 - Model14 P07910014 G0791 (Mfd.SCREWDRIVER Since 9/15) 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 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 1 P07910001 4-JAW INDEPENDENT CHUCK ASSY 24 P07910024 DEAD CENTER MT#3 CARBIDE TIPPED REF PART # DESCRIPTION REF PART # DESCRIPTION 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 1 P07910001 4-JAW INDEPENDENT CHUCK ASSY 24 P07910024 DEAD CENTER MT#3 CARBIDE TIPPED 2 P07910002 FACEPLATE 10" D1-5 27 P07910027 SPINDLE SLEEVE MT#5-MT#3 1-1 P07910001-1 4-JAW INDEPENDENT CHUCK BODY 8" 25 P07910025 DEAD CENTER MT#3 HSS 3 P07910003 BOTTLE FOR OIL 28 P07910028 QUICK-CHANGE TOOL HOLDER ASSY 1-2 P07910001-2 4-JAW CHUCK REVERSIBLE JAW 26 P07910026 DRILL CHUCK ARBOR R-8/B16 4 P07910004 TOOLBOX 29 P07910029 GEAR 45T 2 P07910002 FACEPLATE 10" D1-5 27 P07910027 SPINDLE SLEEVE MT#5-MT#3 6 P07910006 CHUCK WRENCH 4-JAW 30 P07910030 GEAR 27T 3 P07910003 BOTTLE FOR OIL 28 P07910028 QUICK-CHANGE TOOL HOLDER ASSY 7 P07910007 CHUCK WRENCH 3-JAW 31 P07910031 GEAR 50T 4 P07910004 TOOLBOX 29 P07910029 GEAR 45T 9 P07910009 WRENCH 12 X 14MM OPEN-ENDS 32 P07910032 GEAR 26T 6 P07910006 CHUCK WRENCH 4-JAW 30 P07910030 GEAR 27T 10 P07910010 WRENCH 10 X 12MM OPEN-ENDS 33 P07910033 GEAR 35T 7 P07910007 CHUCK WRENCH 3-JAW 31 P07910031 GEAR 50T 11 P07910011 WRENCH 9 X 11MM OPEN-ENDS 34 P07910034 GEAR 60T 9 P07910009 WRENCH 12 X 14MM OPEN-ENDS 32 P07910032 GEAR 26T 12 P07910012 DRILL CHUCK B16 3-16MM 35 P07910035 TAILSTOCK WRENCH 10 P07910010 WRENCH 10 X 12MM OPEN-ENDS 33 P07910033 GEAR 35T 13 P07910013 DRILL CHUCK KEY 5/16" STD 11T SD-5/8" 36 P07910036 3-JAW CHUCK ASSY 6" D1-5 SCROLL 11 P07910011 WRENCH 9 X 11MM OPEN-ENDS 34 P07910034 GEAR 60T 14 P07910014 SCREWDRIVER PHILLIPS #2 36-1 P07910036-1 3-JAW CHUCK TOP JAW SET 12 P07910012 DRILL CHUCK B16 3-16MM 35 P07910035 TAILSTOCK WRENCH 15 P07910015 SCREWDRIVER FLAT #2 36-2 P07910036-2 3-JAW CHUCK BOTTOM JAW SET 13 P07910013 DRILL CHUCK KEY 5/16" STD 11T SD-5/8" 36 P07910036 3-JAW CHUCK ASSY 6" D1-5 SCROLL 16 P07910016 HEX WRENCH 10MM 36-3 P07910036-3 3-JAW CHUCK BODY 6" 14 P07910014 SCREWDRIVER PHILLIPS #2 36-1 P07910036-1 3-JAW CHUCK TOP JAW SET 17 P07910017 HEX WRENCH 8MM 40 P07910040 GEAR 36T 15 P07910015 SCREWDRIVER FLAT #2 36-2 P07910036-2 3-JAW CHUCK BOTTOM JAW SET 18 P07910018 HEX WRENCH 6MM 41 P07910041 CAMLOCK STUD D1-5 16 P07910016 HEX WRENCH 10MM 36-3 P07910036-3 3-JAW CHUCK BODY 6" 19 P07910019 HEX WRENCH 5MM 42 P07910042 CAP SCREW M8-1.25 X 16 17 P07910017 HEX WRENCH 8MM 40 P07910040 GEAR 36T 20 P07910020 HEX WRENCH 4MM 43 P07910043 WRENCH 17 X 19MM OPEN-ENDS 18 P07910018 HEX WRENCH 6MM 41 P07910041 CAMLOCK STUD D1-5 21 P07910021 HEX WRENCH 2MM 44 P07910044 WRENCH 22 X 24MM OPEN-ENDS 19 P07910019 HEX WRENCH 5MM 42 P07910042 CAP SCREW M8-1.25 X 16 22 P07910022 SPIDER BOLT W/NUT M10-1.5 X 38 45 P07910045 SPINDLE SLEEVE R8-MT#3 20 P07910020 HEX WRENCH 4MM 43 P07910043 WRENCH 17 X 19MM OPEN-ENDS 23 P07910023 LIVE CENTER MT#3 46 P07910046 SPINDLE SLEEVE MT#3-MT#2 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

-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 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 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 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

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 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

-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-

WARRANTY & RETURNS