BL Series Brake Lathe Industry leading combination bench lathe BL31 (includes ACT / Digi-Cal 2.0 package, rotor capability, and bench) shown with optional adaptors Key features at a glance OPTIONAL (PATENTED) % Oscillates machining speed to prevent buildup of vibration (chatter) % No bands or other devices required OPTIONAL Digi-Cal 2.0 % Instantly measures drum or rotor dimensions and depth of cut % Calibration holds after power cycling BL33 (includes ACT / Digi-Cal 2.0 package, rotor capability, bench and dust collection hood) shown with optional adaptors OPTIONAL Push button speed control Self-Aligning Nut % Push button control with % Speeds setup three working speeds % Prevents over-tightening % Eliminates belt changes and mounting errors Quick Change % Twin cutters pivot to quickly change from rotors to drums % No storing of cutting head required Disc/Drum Control Lockout % Eliminates potential “crashing” of machine % Warning indication reminder STANDARD Dual LED Work Lamps % Adjustable lamps illuminate both sides of workpiece % Easy push button control STANDARD Adjustable Feed Rate % Dial fast for rapid removal or slow for final surface finish % One-cut pass capable Anti-Chatter Technology with Digi-Cal 2.0 Anti-Chatter Technology eliminates buildup of vibration — stop chatter before it starts! Hunter System Others Oscillating speed Fixed speed Anti-Chatter Technology (ACT) varies spindle speed to Chatter can start when machining rotors at a fixed keep chatter inducing vibration from starting, resulting speed. This is similar to a how a moistened finger in a smoother surface finish. can make a crystal glass sing. Oscillating Speed Fixed Speed SPEED SPEED S TIME TIME Smooth finish Rough finish from chatter Digi-Cal 2.0 instantly measures workpiece dimensions % Quickly determines if workpiece should be discarded prior to machining % Instantly measures drum or rotor dimensions and accurately determines depth of cut % Calibration holds after power cycling Convenient adjustment and calibration Speed control options Change from rotors ACT / DIGI-CAL 2.0 PACKAGE to drums in seconds! Push button speed % Push button control with Change from three working speeds rotors to drums... STANDARD Adjustable Spindle Speeds ... by loosening % Provides correct speed for all clamp screw, size workpieces removing rotor % No tools required setup, rotating twin cutter... ... set up Quick calibration for drum service assembly greater accuracy and extend drum boring bar. DRUM ONLY MACHINES ALSO AVAILABLE Choose the brake lathe tooling to suit your needs STANDARD Positive rake % Provides faster cutting and reduced chatter Calibrates diameter Calibrates thickness % Features 3 cutting tips % Calibrate drum and rotor procedures in seconds OPTIONAL % Calibration holds after power cycling Negative rake % More durable, longer life % Features 6 cutting tips Heavy-duty bench option makes brake service fast and easy % Heavy gauge, all-steel construction gives extra stability % Rear backboard stores frequently-used adaptors within easy reach % Large chip collection funnel keeps debris off the floor .com .hunter http: //www unter.com e-mail: info@h BL500 Set Up Configuration Guide AX (314) 731-1776 TEL (314) 731-3020 F 4 Quick Chuck Hubless Rotor 3 2 1 6 5 Composite Rotor 3 2 Chuck Quick 1 4 Quick Chuck Hubless Drum 3 2 Small Drums Only Hubbed Drum 1 Form 4076T, 3/02 Hubbed Rotor Supersedes Form 5/99 BL500 Operation Tips Maintenance Clean and deburr arbor shaft and vertical face, clamp cups, cones and all other adaptors, daily Rotor Silencer Clean tool Holders, daily 175-276-2 (Vented) Wipe down adaptorsRotor Silencer and machined surfaces with anti-rust preventative, weekly 175-185-2 Silencers Lubricate main support Shaft grease fitting, annually (left side main housing) Rotor Silencer Band 175-189-2 Lubricateented) drum boring bar grease fitting, annually (inside feed assembly cover) (Non-V Drum Silencer Band 175-186-2 (car) 175-187-2ented) (truck) Troubleshooting (Non-V Rotor Silencer Chain 222-38-2 Problem Symptom Solution Dirt or rust on locking taper Taper on arbor and inside spindle must be cleaned before arbor is installed. Excess arbor runout Bent arbor Replace arbor. Arbor nut too tight It is not recommended to use a wrench to tighten Workpiece. Hand tighten only. Excess workpiece Dirty or warped workpiece All rust, grease and dirt must be cleaned runout from mounting surfaces of workpiece. Dirty or dinged adaptors Adaptors must be kept clean. Reface or replace any damaged adaptors. Worn or chipped insert Rotate or replace insert as needed. Insert loose in tool holder Insert must be securely tightened into holder. Tool holder loose in boring bar Tool holder must be securely locked into boring bar. Poor surface finish Dirt and chips under insert Clean tool holder and boring bar each time and tool holders insert is rotated or insert holder is repositioned. Replace insert if worn. BL31 Too high of a feed rate Coarse feed rates are used for roughing passes and fine feed rates are used for finish passes. No stabilizer used Install proper stabilizer for workpiece, see stabilizers on other side. Too high of a spindle speed Refer to Spindle Speed Selector Chart or Chatter Operation Manual for recommended speeds. (includes ACT / Digi-Cal 2.0 Improper mounting techniques Use the largest clamping cups possible and use proper adaptors for composite pieces. package, rotor capability, and bench) shown with Bench includes standard storage drawer optional adaptors and convenient document holder. OPTIONAL * Dust Containment System % Designed to contain brake machining dust and metal particles % Access window allows easy viewing of work piece during machining * Requires a conventional shop vacuum with 2.5" inlet hose. (Not supplied.) Expand the range of your vehicle applications with additional accessories from Hunter PATENTED Hunter Passenger Car and Light Truck Adaptor Kits Customize your Hunter Basic Adaptor Kit BL series lathe to match 20-1665-1 your service needs. Select Consists of hubbed and the appropriate adaptor adaptors covering a range kit to service most rotors, of applications fitting most drums and flywheels. passenger car rotors, drums and flywheels, including composites. Dual QuickChuck™ Adaptor Kit Elite Cone Adaptor Kit 20-2614-1 20-2615-1 Consists of hubbed and Consists of hubbed and hubless adaptors and hubless adaptors covering a three-jaw chuck mounting wide range of applications system. Covers a wide for most passenger cars, range of applications for light truck and larger most rotors, drums and flywheels for passenger light trucks, including composites. cars, light trucks and larger light trucks. STANDARD Dual QuickChuck™ adaptor Wrenchless self-aligning nut 175-423-2 76-377-2 % Ideal for use with % Eliminates over-torquing hubless drums arbor nut % Quick setup with % Works as arbor unparalleled spacer and nut centering ability Specifications* Popular Models Rotor BL33 Disc / Drum lathe with ACT / Digi-Cal 2.0 , Diameter: 6" to 22" * bench and dust collection system Maximum Width: 5-3/8" BL31 Disc / Drum lathe with ACT / Digi-Cal 2.0 Maximum Thickness: 2" and bench Drum Diameter: 6" to 24" * BL01 Drum-only lathe with bench Maximum Width: 8" Maximum Weight 200 lbs. on 1" arbor: Spindle Speed(s): 85, 110, 175 rpm Feed Rate: .002 to .014 in/rev (infinitely variable) Motor: 1.5 hp Power Requirements: 115/230 V, 15/7.5 amp, 50/60 Hz, 1ph Shipping Weight: 525 lbs. (approx.) * The max rotor and drum diameter is 19.5” with the hood installed. BL31 BL33 BL01 Models BL33 BL31 BL30 BL23 BL21 BL20 BL13 BL11 BL10 BL03 BL01 Rotor Capability % % % % % % Act/Digical 2.0 % % % % % % Bench % % % % % % % % Dust Collection Hood % % % % Be sure to check out other literature for more 75.5" quality products from Hunter Engineering. 43" 47.25" * Some specifications may vary depending upon workpiece configurations or may require optional adaptors. 0720CH Form 7702-T, 07/20 Copyright © 2020, Hunter Engineering Company. Supersedes form 7702-T, 11/19 Because of continuing technological advancements, specifications, models and options are subject to change without notice..