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MODEL G0492 12" X 36" COMBO LATHE/MILL 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.
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G0492 12" X 36" METAL LATHE W/ MILLING HEAD Weight... 1200 lbs. Length/Width/Height... 67-3/4 x 26-3/4 x 72 in. Foot Print (Length/Width)... 59-1/4 x 16-1/2 in.
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Type... TEFC Capacitor Start Induction Horsepower...1-1/2 HP Voltage...220V Prewired...220V Phase... Single Amps...7.5A Speed...1725 RPM Cycle...60 Hz Number Of Speeds... 1 Power Transfer ...V-Belt Bearings... Shielded and Lubricated Chuck Type...3-Jaw, 4-Jaw Chuck Size... 6, 8 in. Faceplate Size...8 in. Tailstock Taper... MT#3 Tailstock Travel...
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Bed Const... Hardened and Ground Cast Iron Headstock Const... Cast Iron Body Const... Cast Iron Frame Const...Cast Iron Headstock Gears Const...Steel Stand Const...Formed Steel Paint... Epoxy Bed Width...6-1/2 in. Floor To Center Height...43-1/2 in. Lead Screw Diameter...1 in. Lead Screw TPI...5 Lead Screw Length...
Additional Safety for Lathe/Mills UNDERSTANDING THE MACHINE: CLEANING MACHINE: USING CORRECT TOOLING: ELIMINATING A PROJECTILE HAZARD: SECURING A WORKPIECE: AVOIDING OVERLOADS: MAINTAINING A SAFE WORKPLACE: Like all machinery there is potential danger when operating this machine. Accidents are frequently caused by lack of familiarity or failure to pay attention.
SECTION 2: CIRCUIT REQUIREMENTS 220V Singe-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...
SECTION 3: SET UP Set Up Safety The Model G0492 weighs approximately 1200 lbs. You will need power lifting equip- ment and assistance to remove this machine from the pallet and position it. Inspect all lifting equipment and make sure that all is...
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Inventory Installed Accessories (Figure 3) ... Qty. Packaged Accessories (Figure 4) Figure 3. Figure 4. NOTICE 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 miss- ing.
Site Considerations Floor Load Placement Location Figure 5 Unsupervised children and visitors inside your shop could cause serious per- sonal injury to themselves. Lock all entrances to the shop when you are away and DO NOT allow unsupervised children or visitors in your shop at any time! Figure 5.
OMMEND that you read books, trade maga- zines, or get formal training before begin- ning any projects. Regardless of the con- tent in this section, Grizzly Industrial will not be held liable for accidents caused by lack of training. NOTICE Complete the Test Run &...
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Test Run & Break-In NOTICE Make sure all power feed levers and dials are disengaged before starting the lathe/ mill! Thoroughly familiarize yourself with all the controls and their functions before using any power feed! NEVER SHIFT LATHE/MILL GEARS WHEN MACHINE IS OPERATING. To begin the test run &...
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Mounting the Chuck and the Faceplate To remove and install the chuck or face plate: Figure 9. Figure 10. Figure 10. Figure 9 Securely clamp your workpiece and remove the chuck key! Thrown objects from a lathe/ mill can cause serious injury or death to the operator and to bystanders many feet away.
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Replacing the Jaws Figure 11 Figure 11. Figure 12. Note: The chuck need not be removed from the spindle to swap the jaws. To remove a set of jaws: Figure 12 Figure 13. Figure 13...
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Using the Four-Jaw Chuck To install the four-jaw chuck: Mounting the Chuck and Faceplate Page 17 To load a workpiece in the four-jaw chuck: Figure 14 Figure 14. Figure 15 Figure 15. Securely clamp your workpiece and remove the chuck key! Thrown objects from a lathe/ mill can cause serious injury or death to the operator and to...
Using the Faceplate To install the faceplate: Mounting the Chuck and Faceplate Page 17 To load a workpiece: Note: Depending on the workpiece, some additional support may be needed. Make sure your clamping application will not fail! Securely clamp your workpiece and remove the chuck key! Thrown objects from a lathe/ mill can cause serious injury...
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Using the Tailstock Figure 17 To use the tailstock: Figure 17. Drilling with the Tailstock To install the MT#3 drill chuck: Figure 18 Figure 18.
Cutting Shallow Tapers with Tailstock To setup the tailstock to cut tapers: Note: To return the tailstock back to the original position, repeat the process until the centered position is indicated on the scale. Figure 19. Figure 20. Aligning Tailstock To align the tailstock: Figures 19 Note: As long as the dead center remains in...
Using the Centers To install a dead or live center: Figure 24 Figure 24. Note: Make sure there is a center drilled hole in the end of the workpiece for the dead cen- ter. To install the MT#5 dead center in the spin- dle: Figure 25 Note: When using the dead center in the...
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Using the Steady Using the Follow Rest Rest Figure 27 To use the steady rest: Figure 26 Figure 26. Figure 27. Figure 26 Figure 26...
Using the Using the Tool Post Compound Rest Figure 29 To set the angular position: Figure 28 Figure 29. Figure 28.
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Using the Manual Feed Handwheels Figure 30 Figure 30. Longitudinal Handwheel Cross Slide Handwheel Compound Rest Handwheel Setting the Spindle To determine and set the needed spindle RPM for cutting: Figure 31 Cutting Speeds for High Speed Steel (HSS) Cutting Tools Note: For carbide cutting tools, double the cutting speed.
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(Cutting Speed x 4) = RPM Diameter of Cut Figure 32 Note: You may need to rotate the chuck by hand to get the gears to engage. Figure 32.
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Setting Power Feed Rate NOTICE Feed rate is based on spindle RPM. Pay close attention to the feed rate you have chosen and be ready to disengage the apron. Failure to do this may cause the carriage to crash into the chuck. To set and engage the power feed: Change Gear Chart Figure 33...
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Setup for Threading To setup for threading: Change Gear Chart Figure 36 Note: All change gears are stamped with the number of teeth they have. Figure 36. Page 31 Dial Table Figure 33 Figure 37 Figure 35 Figure 37. Figure 38 THREAD DIAL TABLE LEAD SCREW PITCH 5 T.P.I.
SECTION 5: MILL OPERATIONS Test Run & Break-In NOTICE Failure to follow start up and spindle break- in procedures will cause rapid deterioration of spindle and other related parts, and never shift gears while lathe or mill is running. To begin the start up procedure: ON Figure 39 Figure 39.
Positioning the Headstock To position the spindle head vertically: Figure 41 Figure 41. The headstock is heavy. Make sure that you support the headstock before you loosen the lock nuts. Ignoring this warning may allow the headstock to uncontrolla- bly swing over to the right or left causing injury or severe lathe/mill damage.
Installing Cutters To install a cutter in the spindle: Figure 45 Note: Overtightening the drawbar makes removal difficult and stretches the threads of the arbor and the drawbar. Figure 44. Figure 45. Figure Removing Cutters To remove a cutter from the spindle: NOTICE DO NOT completely unscrew the drawbar prior to striking the drawbar or the initial...
Setting the Spindle NOTICE Never shift gears while lathe or mill is running; otherwise, the gear teeth will be chipped or broken. To determine and set the mill to the needed cutting RPM: Figure 46 Cutting Speeds for High Speed Steel (HSS) cutting tools: Figure 46.
SECTION 6: MAINTENANCE Basic Maintenance Check for the following conditions and repair or replace when necessary: Figure 49. General Lubrication Figure 48 Figure 50. General Cleaning Figure 48. Figures 49 and 50...
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Figure 51 Figure 52 Figure 48 Figure 51. Figure 52. Belt Adjustment or Replacement To replace or adjust the V-belts: Figure 53 Figure 53 Figure 53. Figure...
SECTION 7: SERVICE Cross Slide Backlash Adjustment Note: Avoid the temptation to overtighten the cross slide backlash screw. Overtightening will cause excessive wear to the sliding block and lead screw. Figure 54 Figure 54. Note: Reducing backlash to less than 0.001" is impractical and reduces the life of the cross slide.
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2700 Series Parts List PART # DESCRIPTION 2701 P04922701 COVER PLATE 2702 PS05M PHLP HD SCR M5-.8 X 8 2703 P04922703 BALL OILER 8MM 2704 P04922704 SPECIAL SET SCREW M5-.8 X 6 2705 P04922705 SHAFT 2706 PK08M KEY 5 X 5 X 16 2707 P04922707 GEAR (20-TOOTH)
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Lathe Headstock Diagram (3000 Series Parts)
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3000 Series Parts List PART # DESCRIPTION 3001 P04923001 SPANNER NUT M16-1.5 3002 P04923002 TANG WASHER 3003 PW08M FLAT WASHER 16MM 3004 PK08M KEY 5 X 5 X 16 3005 P04923005 SPINDLE PULLEY 3006 P04923006 TAPER ROLLER BEARING 60206 3007 PSB33M CAP SCREW M5-.8 X 12 3008...
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Compound Rest and Tool Post Diagram (3500 Series Parts)
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3500 Series Parts List PART # DESCRIPTION 3501 P04923501 FEMALE KNOB 5/16-18 3502 P04923502 LEVER 5/16-20 3503 P04923503 TOOL POST BOLT M10-1.5 X 20 3504 P04923504 LEVER HUB 3505 P04923505 SPACER 3506 P04923506 FOUR-WAY TOOL POST 3507 P04923507 SLIDE 3508 P04923508 DETENT PIN 3509...
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4000 Series Parts List PART # DESCRIPTION 4001 P04924001 4002 P04924002 RACK SET 4003 P04924003 TAPER PIN 4004 PSB11M CAP SCREW M8-1.25 X 16 4005 P04924005 CHOCK 4006 P04924006 SPECIAL FLAT WASHER 4007 PS08M PHLP HD SCR M5-.8 X 12 4008 PSS12M SET SCREW SCR M6-1 X 25...
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Steady Rest and Follow Rest Diagram (4500 Series Parts)
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4500 Series Parts List PART # DESCRIPTION 4501 P04924501 PINNED KNOB 4502 P04924502 ADJUSTMENT STUD 4503 P04924503 TAPERED PIN 4504 P04924504 BRASS-TIPPED FINGER 4505 P04924505 SPECIAL SET SCREW M6-1 4506 PN01M HEX NUT M6-1 4507 P04924507 THUMB KNOB M6-1.0 X 20 4508 P04924508 CLEVIS PIN 8 X 32MM...
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5700 Series Parts List PART # DESCRIPTION 5701 P04925701 SPECIAL SET SCREW M5-.8 X 8 5702 P04925702 COMPRESSION SPRING 5703 P04925703 BALL OILER 5704 P04925704 STEEL BALL 8MM 5705 PR03M EXT RETAINING RING 12MM 5706 P04925706 DOWEL NUT 5707 PSB12M CAP SCREW M8-1.25 X 40 5708 P04925708...
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6000 Series Parts List PART # DESCRIPTION 6001 PK81M KEY 6 X 6 X 12 6002 P04926002 GEAR SHAFT 6003 P04926003 LOCK COLLAR 6004 PSS04M SET SCREW M6-1 X 12 6005 P04926005 SPECIAL SET SCREW M6-1.0 X 12 6006 P04926006 WORM GEAR 6007 P04926007...
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Mill Headstock Diagram (7500 Series Parts)
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7500 Series Parts List PART # DESCRIPTION 7501 PR12M EXT RETAINING RING 35MM 7502 P04927502 ROLLER BEARING 207 7503 P04927503 SHAFT SLEEVE 7504 P04927504 CLUSTER GEAR 7505 P04927505 BALL BEARING 50207 7506 P04927506 BEARING LOOP 7507 PR12M EXT RETAINING RING 35MM 7508 P04927508 DRAW BAR 7/16-20...