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MODEL G0670 16" x 40" HIGH PRECISION EVS LATHE OWNER'S MANUAL WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
INTRODUCTION Foreword Functional Overview www. grizzly.com Note If the CSS switch is in the OFF position, the cross slide position has no effect on spindle speed. The spindle speed is only adjusted with the spindle speed dial. Contact Info...
16" X 40" ELECTRONIC VARIABLE SPEED LATHE Product Dimensions: Shipping Dimensions: Electrical: Motors: Main Lubrication MACHINE DATA SHEET MODEL G0670...
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Motors (continued): Coolant Main Specifications: Operation Information Headstock Information Tailstock Information Threading Information...
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Main Specifications (continued): Dimensions Construction Other Specifications: Features Standard Equipment...
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Headstock/Apron Controls Figure 2. A. Spindle Range Lever: B. Gearbox Range Lever: C. Feed Direction Lever: D. Gearbox Levers: E. 4-Position Tool Post Lever: Compound Hand Crank: G. Cutting Fluid Flow Control Lever: H. Cross Slide Handwheel: Longitudinal Carriage Handwheel: Manual Carriage Oil Pump: K.
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Figure 3. Figure 4. O. CSS ON/OFF SWITCH: Tachometer Display: Q. Spindle Speed Dial: R. Power Light: S. Cutting Fluid Pump Switch: ON/OFF Jog Button: U. Emergency Stop Button: Master Power Switch: ON/OFF...
SECTION 2: CIRCUIT REQUIREMENTS 220V 3-Phase Operation Serious personal injury could occur if you connect the machine to power before com- pleting the setup process. DO NOT connect the machine to the power until instructed later in this manual. Electrocution or fire could result if machine is not grounded and installed in compliance with electrical...
Wear safety glasses dur- ing the entire setup pro- cess! The Model G0670 is extremely heavy machine. Serious per- sonal injury may occur if safe moving methods are not followed. To be safe,...
Some hardware/fasteners on the inventory list may arrive pre-installed on the machine. Check these locations before assuming that any items from the inventory list are missing. Tool Box Inventory: (Figure 7) Note: Chuck jaws are shiped inside of main lathe electrical box. Figure 7.
Site Considerations Floor Load Machine Data Sheet Working Clearances Figure 8 Children and visitors may be seriously injured if unsuper- vised around this machine. Lock entrances to the shop or disable start switch or power connection to prevent unsupervised use. Figure 8.
Lifting & Moving the Lathe This lathe is an extremely heavy machine. Serious personal injury or death may occur if safe lifting Figure 9. and moving methods are not followed. Get assis- tance from a professional rigger if you are unsure...
Test Run NOTICE This lathe is shipped without oil. Fill all gearboxes to the correct level, and oil the ways and all lubrication points before start- ing lathe. Ignoring this notice will result in lathe damage and void warranty! Troubleshooting...
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Note: This headstock has a pressurized oil system that is equipped with an oil pres- sure safety switch. If oil stops flowing, the lathe will shut down automatically and not restart until the oil system failure is cor- rected. Never bypass this safety system or...
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Figure 20 Brake and Switch Page 66 Figure 20 Spindle Break-in THIS LATHE IS SHIPPED WITHOUT OIL! Complete all Lubrication procedures out- lined in the MAINTENANCE section on Page 53 Failure to follow all lubrication and beak-in procedures will cause rapid deterioration of bearings and other related parts and void your machine warranty.
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Figure 21. Figure 22 Figure 22. NOTICE Do not leave the lathe unattended during the break-in period. Make sure that you keep a close eye on the headstock oil thermometer (Figure 23) on the oil tank. If the headstock oil temperature reaches 160°F shut the lathe down and let the system cool before resuming break-in.
SECTION 4: OPERATIONS Operation Safety If at any time you are experiencing difficulties performing any operation, stop using the machine! Above all, your safety must come first! Damage to your eyes could result from using this machine without proper protective gear. Always wear safety glasses or a face shield when operating this machine.
Camlock Stud Adjustment Figure 26 Page 26 NOTICE Never install a chuck or faceplate without having the camlock cap screws in place or fully tightened. If you ignore this notice, Figure 26 the chuck may never be able to be removed since the camlock studs will turn with the camlocks and never release.
Chuck and Faceplate Mounting The chuck is heavy and is awkward to han- dle. Always protect the ways when remov- ing or installing a chuck, and make sure that you make a support cradle Figure 27 , lifting hoist, or that you have an assis- tant when installing or removing chucks.
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To install a chuck or faceplate: NOTICE Never install a chuck or faceplate without having the camlock cap screws in place or fully tightened. If you ignore this notice, the chuck may never be able to be removed since the camlock studs will turn with the camlocks and never release.
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Using the 3-Jaw Chuck Figure 31 Figure 31. Tools Needed To mount a workpiece in the 3-jaw chuck: Using the 4-Jaw Chuck Tools Needed To mount a workpiece on the 4-jaw chuck: Figure 32 Figure 32.
Using the Faceplate To mount a workpiece on the faceplate: Figure 33 Note: Take into account the rotation and cutting forces that will be applied to the workpiece when clamping it to the faceplate. Figure 33.
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Reversing the Jaws Figure 34 Figure 34. Figure 35. Note: The chuck need not be removed from the spindle to swap the jaws. To reverse a set of jaws: Figure 35 Figure 36. Figure 36...
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Centers To install a dead or live center: Figure 37 Figure 37. Note: Make sure there is a center drilled hole in the end of workpiece that will fit the dead center tip. Tailstock Figure 38 Figure 38. To move the tailstock: To use the tailstock quill:...
Aligning Tailstock To align the tailstock: Page 18 Step 6. Figure 39 . Note: As long as the dead center remains in the chuck, the point of your center will remain true to the spindle axis. But remember the point will have to be refinished whenever it is removed and returned to the chuck.
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Drilling with Tailstock To use a tapered drill chuck: Figure 43 Figure 42. Figure 43. Cutting Tapers with Figure 42 To offset the tailstock: Figure 44 Figure 45 Figure 44 Figure 45 Tailstock...
Note: Do not confuse this feature with the emer- gency stop button. The emergency stop button cuts power to the machine and does not apply the brake. This button must be reset to restore power to the lathe. Figure 52. Adjustable Carriage Stop System...
Manual Feed Figure 54 Figure 54. Longitudinal Handwheel Cross Slide Handwheel Compound Handcrank Power Feed NOTICE Feed rate is based on spindle RPM. High feed rates combined with high spindle speeds result in a rapidly moving carriage or cross slide. Pay close attention to the feed rate you have chosen and keep your foot poised over the brake pedal.
General Note: Cutting fluids are used for heavy-duty lathe operations and production turning. Oil-water emulsions and synthetic cutting fluids are the most common for typical lathe operations. Sulfurized oils often are used for threading. For small projects spot lubrication is done with an oil can or brush, or omitted completely.
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Gearbox Threading and Feed Setup Figure 63 Figure 64 Inch an Metric Pitch Threading Inch an Metric Feeding Figure 63 NOTICE Module and Diametrial Pitch Threading Always use the slowest speed possible for threading, and avoid deep cuts or you may not be able to disengage the half nut to pre- vent an apron crash! Figure 64...
Thread Dial Figure 65 NOTICE Always use the slowest speed possible for threading, and avoid deep cuts or you may not be able to disengage the half nut to prevent an apron crash! Figure 65. Figure For all other even numbered TPI: Any number or mark can be used.
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If the lathe is started with the CSS switch ON, and the cross slide is positioned all the way inward, the spindle will immedi- ately wind-up to the highest spindle RPM of the range that it is in.
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FORWARD, Note: To quickly change carriage or cross slide feed direction, disengage the feed lever, push-in or pull-out the feed direction knob, and the re-engage the feed lever. There is no need to shutdown and move the leadscrew/ feedrod direction lever on the gearbox. However be careful, changing the position of the gearbox direction lever will reverse any feed direction knob selection.
SECTION 5: ACCESSORIES www.grizzly.com H2670—HSS Square Tool Bits ½" x ½" x 4 Figure 75. H5687—8-Pc. Pre-Ground Tool Bit Set Figure 76. G9777—20-Pc. Carbide Tipped Tool Bit Set Figure 77. G5640—5-Pc. Indexable Carbide Tool Set ½" G6706—Replacement TiN Coated Carbide Indexable Insert Figure 78.
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H8257—Primrose Armor Plate with Moly-D Machine and Way Oil Figure 79. H9240—Rustlick™ WS5050 Heavy-Duty Soluble Machining Oil Figure 80. G5845—10 HP/8 HP Start, Phase Converter Figure 81. H5787—MT#4 x 5" Bull Nose Rolling Center H5903—MT#4 x 5" Bull Nose Rolling Center Figure 82.
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G7038Z—Boring Bar G7040—Carbide Inserts for Steel (5 pk) G7048—Carbide Inserts for Cast Iron (5 pk) Figure 83. G7030—Threading Tool Holder G7041—Carbide Inserts for Steel (5 pk) G7049—Carbide Inserts for Cast Iron (5 pk) Figure 84. G7033—Internal Threading Tool Holder G7042—Carbide Inserts for Steel (5 pk) G7050—Carbide Inserts for Cast Iron (5 pk) Figure 85.
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H2987—½" Bent Lathe Dog H2988—1" Bent Lathe Dog H2989—1½" Bent Lathe Dog H2990—2" Bent Lathe Dog H2991—3" Bent Lathe Dog Figure 88. G9256—6" Dial Caliper G9257—8" Dial Caliper G9258—12" Dial Caliper Figure 89. G9849—Magnetic Base/Dial Indicator Combo Figure 90. H6879—Lathe Operation & Maintenance Book Figure 91.
SECTION 6: MAINTENANCE Always disconnect power to the machine before performing maintenance. Failure to do this may result in serious person- al injury. Schedule Daily: Monthly: Annually: Cleaning Figure 92 Figure 92...
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Oil Pump System Figure 102 Figure 107 Figure 102. Figure 103 Tools Needed: Figure 103. To clean the oil pump system: Figure 103 Figure 104 Note: The cap screw in the center of the cover acts as a handle to lift the plate and does not need to be removed.
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TIP: While the tank is accessible, you can place a magnet at the bottom-center of the tank, or install a magnetic drain plug to collect any fine metal particles generated by the headstock drivetrain. Figure 105. Figure 107. Figure 105 Figure 106.
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Cutting Fluid System POISON AND BIOLOGICAL HAZARD! Use the correct personal protection equip- ment when handling cutting fluid and by follow federal, state, and fluid manufactur- er requirements to properly dispose of cutting fluid. To perform regular maintenance on the cut- ting fluid system: Figure 108 Figure 108.
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Cross Slide Slide Leadscrew Adjustment NOTICE Figure 111 Avoid the temptation to overtighten the backlash set screw. Overtightening will cause excessive wear to the wedge, half nut, and lead screw. Reducing backlash to less than 0.001" is impractical and reduces cross slide and compound slide life.
V-Belts Tools Needed: To adjust or replace the V-belts on the lathe: Figure 121 Note: Replace all three belts as a matched set even if only one shows cracking, glazing, or fraying. Figure 121. Brake and Switch Tools Needed: To adjust the brake and brake switch: Figure 122 Figure 122.
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Gap Removal & Installation NOTICE We don't recommend removing the gap. Reinstallation to exact factory alignment is nearly impossible. The only option is to then leave the gap out. To remove the gap: Figure 133 Figure 133 Figure 133. Figure 133 To reinstall the gap:...
The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com. 220V SINGLE-PHASE GROUNDED CIRCUIT. MOTOR WIRING.
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View this page in color at www.grizzly.com. L15-20 PLUG (as recommended) SHOCK HAZARD! Varispeed 220 VAC 3-PH Figure Page 75. COLOR KEY Page Page 75.
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View this page in color at www.grizzly.com. COLOR KEY OIL PUMP Page 75. MOTOR (220V) Page 75. SPINDLE MOTOR Page 75. (220V) COOLANT PUMP MOTOR (220V) Page 75.
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Control Panel Switch Electrical Figure 137.
SECTION 9: PARTS Headstock (Oil Distribution System) PART # DESCRIPTION P06700001 OIL PLUG PSB29M CAP SCREW M6-1 X 40 P06700003 HEADSTOCK COVER P06700004 COVER SEAL PSB50M CAP SCREW M5-.8 X 10 P06700006 STAND-OFF CLAMP PART # DESCRIPTION PSB15M CAP SCREW M5-.8 X 20 PFH30M FLAT HD SCR M5-.8 X 8 P06700009...
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Carriage (Saddle and Slide) Parts List PART # DESCRIPTION 6001 P06706001 GIB SCREW 6002 P06706002 CROSS SLIDE 6003 P06706003 PIVOT 6004 P06706004 T-BOLT 6005 P06706005 6006 P06706006 WIPER 6007 P06706007 PLATE 6008 P06706008 THRUST BEARING NTB/AS2 6009 P06706009 CAP COLLAR 6010 P06706010 SPACER...
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Carriage (Saddle Lubrication System) PART # DESCRIPTION 6506 PS08M PHLP HD SCR M5-.8 X 12 6511 PSS03M SET SCREW M6-1 X 8 6513 PSB02M CAP SCREW M6-1 X 20 6515 PSB24M CAP SCREW M5-.8 X 16 6516 PSS74M SET SCREW M8-1.25 X 35 6517 PSB169M CAP SCREW M12-1.75 X 75...
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Carriage (Compound and Tool Holder) PART # DESCRIPTION 7001 P06707001 LEVER 7002 P06707002 TURRET NUT 7003 P06707003 SPACER WASHER 7004 P06707004 TOOLING BOLT M10-1.5 X 52 7005 P06707005 TURRET BODY 7006 P06707006 TURRET SHAFT 7007 P06707007 DETENT PIN 7008 P06707008 COMPRESSION SPRING 6 X 27 7009 P06707009...
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Bed (Thread Dial and Rests) PART # DESCRIPTION 7501 P06707501 DIAL SCALE 7502 P06707502 DIAL SHAFT 7503 P06707503 THREAD DIAL CASTING 7504 P06707504 THUMB NUT M8-1.25 7505 P06707505 STUD M8-1.25 X 107 7506 P06707506 THREADING PLATE 7507 P06707507 SPACER 7508 P06707508 DIAL GEAR 16T 7509...
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Accessories and Coolant System Parts List PART # DESCRIPTION 8501 P06708501 SHAFT 8502 PSB31M CAP SCREW M8-1.25 X 25 8503 P06708503 PEDAL BRACKET 8504 PSB01M CAP SCREW M6-1 X 16 8505 P06708505 COLLAR 8506 PSB61M CAP SCREW M10-1.5 X 20 8507 P06708507 FOOT PEDAL...