Grizzly G9972Z Owner's Manual
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Grizzly G9972Z Owner's Manual

Grizzly G9972Z Owner's Manual

11" x 26" light-duty lathe w/gearbox
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MODEL G9972Z
11" x 26" LIGHT-DUTY
LATHE w/GEARBOX
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.

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  • Page 1 MODEL G9972Z 11" x 26" LIGHT-DUTY LATHE w/GEARBOX 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.

  • Page 3: Table Of Contents

    INTRODUCTION ... 2 SECTION 1: SAFETY ... 6 SECTION 2: CIRCUIT REQUIREMENTS ... 9 SECTION 3: SETUP ... 10 SECTION 4: OPERATIONS ... 16 Table of Contents SECTION 5: ACCESSORIES ... 37 SECTION 6: MAINTENANCE ... 40 SECTION 7: SERVICE ... 45 SECTION 8: WIRING ...

  • Page 4: Introduction

    INTRODUCTION Functional Overview Foreword www.grizzly.com Contact Info...
  • Page 5 Identification Figure 1.

  • Page 6: Machine Data Sheet

    Machine Data Sheet Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G9972Z 11" X 26" BENCH LATHE W/ GEARBOX Product Dimensions: Weight... 490 lbs. Length/Width/Height... 51 x 23 x 19 in.
  • Page 7 Headstock Info Spindle Bore...1 in. Spindle Size... 1-3/4 in. Spindle Taper...MT#4 Spindle Threads... 8 No Of Spindle Speeds...6 Range Of Spindle Speeds...150, 300, 560, 720, 1200, 2400 RPM Spindle Type...Threaded Spindle Bearings... Tapered Roller Tailstock Info Tailstock Travel... 2-1/2 in. Tailstock Taper...
  • Page 8 Safety Instructions for Machinery...

  • Page 10: Section 1: Safety

    Additional Safety Instructions for Lathes UNDERSTANDING THE MACHINE: CLEANING MACHINE: USING CORRECT TOOLING: ELIMINATING A PROJECTILE HAZARD: SECURING A WORKPIECE: AVOIDING OVERLOADS: AVOIDING ENTANGLEMENT INJURIES: Like all machinery there is potential danger when operating this machine. Accidents are frequently caused by lack of familiarity or failure to pay attention.

  • Page 11: Section 2: Circuit Requirements

    SECTION 2: CIRCUIT REQUIREMENTS 110V 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...

  • Page 12: Section 3: Setup

    Wear safety glasses dur- ing the entire setup pro- cess! The Model G9972Z is a heavy machine. Serious personal injury may occur if safe moving methods are not used. To be safe, get assistance and use power equipment rated for at least 750 lbs.
  • Page 13 Inventory Note: If you can't find an item on this list, check the mounting location on the machine or examine the packaging materials carefully. Occasionally we pre-install certain components for shipping purposes. Inventory: (Figure 3) Figure 3. Clean Up For optimum performance, clean all moving parts or sliding contact surfaces.

  • Page 14: Site Considerations

    750 lbs. and in good working condition. If the lathe falls or tips over while moving it, serious personal injury and property damage could result. The Model G9972Z is a heavy machine. Serious personal injury may occur if safe moving methods are not used.
  • Page 15 Figure 6 Figure 6. NOTICE Make sure the lifting straps are between the leadscrew and bedway to avoid bending the leadscrew when lifting the lathe. Note: If necessary, move the carriage or tailstock to help balance the load. Note: Re-check the bedway after 24 hours, after two weeks, then annually to make sure it remains level.

  • Page 16: Check Gearbox Oil

    Check Gearbox Oil Lubrication Page 41 GEARBOXES MUST BE FILLED WITH OIL! NO OIL SHIPPED WITH MACHINE! Requires ISO 68 or Equivalent Gear Oil. Test Run Troubleshooting Page 45 To test run the machine: Page 16 Lubrication Page 41 Figure 9. ALWAYS make sure the power feed lever and the half-nut lever are disengaged before starting the lathe to avoid carriage crashes...

  • Page 17: Carriage Lock

    Spindle Break-In Spindle Break-In NOTICE Successfully complete all of the spindle break-in steps to avoid rapid deterioration of the spindle bearings and other related parts. Lubrication Page 41 Spindle Speed Steps 4–6 Carriage Lock Test Figure 10. Recommended Adjustments Page Page 45 Factory adjustments that should be verified: Figure 10...

  • Page 18: Section 4: Operations

    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. Basic Controls Figures 11–13...
  • Page 19 Carriage Figure 12. A. Follow Rest: B. 4-Way Tool Post Lock Lever: C. Compound Slide Handwheel: D. Thread Dial: E. Half-Nut Lever: Power Feed Lever: NOTICE NEVER attempt to engage the carriage power feed (lever up) and the half-nut (lever down) at the same time, and NEVER force these levers.
  • Page 20 Chuck & Faceplate Mounting/Removal ACCESSORIES Page 37 Tools Needed Mounting a Chuck or Faceplate Figure 14 Figure 14. Note: Overtightening the chuck or faceplate will make removal difficult and could damage the threads. Figure 15. Make sure the chuck or faceplate is firmly secure on the spindle and remove the chuck key.
  • Page 21 Figure 16 Figure 16. PINCH HAZARD! Protect your hands and the precision ground bedways with plywood or a chuck cradle when removing the lathe chuck! The heavy weight of a falling chuck can cause serious injury. Removing a Chuck or Faceplate Figure 14 Figure 16 Figure 15...

  • Page 22: Jaw Chuck

    3-Jaw Chuck Figure 17. Tools Needed Mounting Workpiece in 3-Jaw Chuck Figure 17 Removing Jaws from 3-Jaw Chuck Note: Store the jaws in a place free from moisture and abrasives. Securely clamp your workpiece and remove the chuck key! Thrown objects from a lathe can cause serious injury or death to the operator and...
  • Page 23 Installing Jaws into 3-Jaw Chuck Figure 18 Figure 18. Steps 4–5 4-Jaw Chuck Large chucks are very heavy. Always get assistance when removing or installing large chucks to prevent personal injury or damage to the chuck or lathe. Tools Needed To mount a workpiece in the 4-jaw chuck: Page 18...
  • Page 24 Figure 19 Figure 19. Figure 20 Figure 20. Always use a low spindle speed when machining non-cylindrical or off-center workpieces to avoid ejecting the workpiece from the holding device at a high rate of speed. Failure to heed this warning could lead to serious personal injury, death or property damage.
  • Page 25 Centers Figure 22. NOTICE To avoid premature wear of the dead center or damage to the workpiece, always keep the dead center tip well lubricated during use. Using a Center in the Spindle Note: When using the dead center in the spindle, use a lathe dog so that your part will rotate with the spindle.

  • Page 26: Offsetting Tailstock

    Offsetting Tailstock Tailstock Figure 23. Aligning Tailstock To align the tailstock: Moving and Placement Note: If the tailstock is slightly out of align- ment by a few thousands of an inch, the center drill will find the center point during the drilling process.
  • Page 27 thinner away half Figure 27 Step 2 Figure 25 Figure 27. Figure 25. Offsetting Tailstock Page 24 thicker toward half Figure 26 Figure 26.

  • Page 28: Drilling With Tailstock

    Drilling with Steady Rest Tailstock Tools Needed Figures 28–29 To install and use the steady rest: Figure 28. Figure 30 Figure 29. Figure 30.

  • Page 29: Cross Slide

    Note: The fingers should be snug enough to fully support the workpiece at all three points and also allow free rotational movement of the workpiece. Note: After prolonged use, the fingers will require milling or filing to clean up the contact surface.

  • Page 30: Compound Slide

    Compound Slide Handwheel Dial Increments Tools Needed To set the compound slide angle: Figure 33 Figure 33. Resolution Tools Needed To load and use the tool post: Figure 34 Note: To properly secure the tool, make sure a minimum of two post cap screws are hold- ing the tool.

  • Page 31: Spindle Speed

    Spindle Speed Calculating the Correct Spindle RPM Figure 35 Note: Cutting speeds are expressed in sur- face feet per minute (SFM) that the cutter moves against the workpiece. Recommended Cutting Speeds Rough Cuts Note: These values are based on HSS cutting tools.
  • Page 32 Figure 36. The V-belt, change gears, and pulleys represent a serious entanglement hazard when the lathe is running. Always dis- connect the lathe from power before opening the change gear cover. Configuring the V-Belt Tools Needed To configure the V-belt: Figure 36 Note: This chart is also on the front of the headstock.

  • Page 33: Power Feed

    Figure 36 Note: The pulley slots are numbered 1–3 with number 1 being the outside slot. Power Feed Feed Rate NOTICE Feed rate is based on the spindle speed. High feed rates result in a rapidly moving carriage. Pay close attention to the feed rate you have chosen and keep your hand poised over the power feed lever.

  • Page 34: Feed Rate

    Feed Rate Figure 40 Recommended Feed Rates Rough Cuts Note: These values are a guideline only. Refer to the MACHINERY’S HANDBOOK for more detailed information. Figure 40. Figure 42. Figure 41 Note: This lathe is shipped with the 24 tooth gear installed in the "a"...
  • Page 35 Tools Needed Configuring Change Gears Figure 42 Note: The feed rates are given in inches of carriage travel per revolution of the spindle (IPR). Note: Before you install the gears, thoroughly clean them with a stiff brush and mild solvent, then apply a light coat of NLGI #2 grease to the teeth.
  • Page 36 NOTICE NEVER move the feed rate dials while the lathe is running, and NEVER force the dials when shifting. If the dial will not engage, rotate the spindle by hand while keeping light pressure on the dial. As the spindle rotates, the feed rate gears will align and the dial will slip into position.

  • Page 37: Threading Controls

    Threading Controls Power Feed Lever Figure 46 Figure 46. Half-Nut Lever Figure 47 Figure 47. Thread Dial & Chart Figure 49 Page 36 Figure 48 Figure 48. NOTICE NEVER attempt to engage the carriage power feed (lever up) and the half-nut (lever down) at the same time, and NEVER force these levers.
  • Page 38 Figure 49 Figure 49. Note: The thread dial is not used when cutting metric threads. Leave the half-nut engaged until the threads are complete. NOTICE DO NOT engage the half-nut when the spin- dle speed is over 300 RPM. Ignoring this instruction could result in damage to the leadscrew or carriage components.

  • Page 39: Section 5: Accessories

    SECTION 5: ACCESSORIES H6879—Lathe Operation & Maintenance Book Figure 50. H2670—HSS Square Tool Bits Figure 51. H8257—Primrose Armor Plate with Moly-D Machine and Way Oil 1 Quart S. Balolia – President Figure 52. G9849—Magnetic Base/Dial Indicator Combo Figure 53.
  • Page 40 G1070—MT3 Live Center Set Figure 54. H7540—Metalworking Kit No. 1 Figure 55. G1075—52-PC. Clamping Kit, Figure 56. G9256—6" Dial Caliper G9257—8" Dial Caliper G9258—12" Dial Caliper Figure 57. ⁄ " T-Nut...
  • Page 41 H2972—Cut Off Holder with Blade H4268— ⁄ " x ⁄ " x 5" Replacement Blade Figure 58. H2996—Double Ended Boring Bar Figure 59. H5936—2 Pc. Knurling Tool Set Figure 60. H2987—½" Bent Lathe Dog Figure 61.

  • Page 42: Section 6: Maintenance

    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 Check: Every 6–8 Hours of Operation: Pages 41–44 After First Three Months and Annually: DO NOT use compressed air to blow away chips from the lathe to avoid the risk of flying metal debris injuring yourself or oth- ers, or driving the chips deep into the lathe...
  • Page 43 Lubrication Ball Oilers Lubricant Frequency Figures 62–66 Figure 62. NOTICE Follow reasonable lubrication practices as outlined in this manual for your lathe. Failure to do so could lead to premature failure of your lathe and will void the war- ranty. Figure 63.
  • Page 44 Feed Rate Gearbox Oil Reservoir Lubricant Frequency Tools Needed To check and add oil to the reservoir: Figure 67 Figure 67. The feed rate gearbox oil must be changed after the first three months of operation, then annually after that. Tools Needed To change the oil in the reservoir: Figure 67...
  • Page 45 Compound Slide Lubricant Frequency Figure 70 Longitudinal Leadscrew & Carriage Rack Lubricant Frequency Figure 69 Figure 70. Figure 69.
  • Page 46 Feed Lever Plunger Lubricant Frequency Figure 71 Figure 71. Bedways Lubricant Frequency ACCESSORIES Page 37 Change Gears Lubricant Follow reasonable lubrication practices as outlined in this manual for your lathe. Failure to do so could lead to premature failure of your lathe and will void the war- ranty.

  • Page 47: Section 7: Service

    SECTION 7: SERVICE Troubleshooting Motor & Electrical Page 55 Page 30 Page 51...
  • Page 48 Motor & Electrical (continued) Page 29 Page 30 Page 55...
  • Page 49 Operations Pages 29–32 Page 49 Page 49 Pages 29–32 Page 49 Page 48 Page 49 Page 49 Page 48 Page 24...

  • Page 50: Backlash Adjustment

    Cross Slide Backlash Adjustment Tools Needed To adjust the cross slide backlash: Figures 72–73 Figure 72. Figure 73. Figure 73 Note: Turn the adjustment screw clockwise to reduce backlash and counterclockwise to increase it.

  • Page 51: Gib Adjustments

    Gib Adjustments NOTICE Excessively loose gibs may cause poor workpiece finishes, and may cause undue wear of the sliding surfaces and ways. Over-tightening the gibs may cause prema- ture wear of these sliding surfaces. Tools Needed To adjust the cross slide and compound slide gibs: Figures 74–75 Figure 74.
  • Page 52 Half-Nut Adjustment Tools Needed To adjust the half-nut: Figure 76 Figure 76. Shear Pin Replacement Figure 77. Tools Needed To replace the shear pin: Figure 77...

  • Page 53: Bearing Preload

    Ribbed Belt Replacement Figure 78. Tools Needed To replace the ribbed belt: Note: It may be more convenient to access the motor mount hex nuts if you first remove the rear splash guard. Bearing Preload Figure Tools Needed To adjust the spindle bearing preload: Figure 79 Figure 79.
  • Page 54 Figure 79 Note: You may have to tap on the outboard spindle tube as explained in Step 6 to help unload the spindle preload and break the spanner nut loose. Figure 80. Figure 80 Figure 81. Note: While tightening the spanner nuts, rock the spindle back and forth slightly to make sure the spindle tapered roller bearings seat properly in their races.
  • Page 55 Figure 82. NOTICE Do not overtighten the outer spanner nut because additional pressure can force the bearings even tighter against the races in the headstock and cause the headstock to compress, crack, or cause bearing failure. To confirm that the spindle bearings are cor- rectly preloaded: Figure 82 Step...

  • Page 56: Section 8: Wiring

    GROUNDED CIRCUIT. WARNING! SHOCK HAZARD! Disconnect power before working on wiring. MOTOR WIRING. 5. EXPERIENCING DIFFICULTIES. NOTICE The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com.

  • Page 57: Wiring Diagram

    Wiring Diagram Figure 83. Figure 84. Figure 85. READ ELECTRICAL SAFETY ON PAGE 54!

  • Page 58: Section 9: Parts

    SECTION 9: PARTS Headstock Breakdown...

  • Page 59: Headstock Parts List

    Headstock Parts List REF PART # DESCRIPTION P9972Z0001 HEADSTOCK NAMEPLATE PS17M PHLP HD SCR M4-.7 X 6 PSB06M CAP SCREW M6-1 X 25 PW03M FLAT WASHER 6MM P9972Z0007 COMPRESSION SPRING .8 X 8 X 20 P9972Z0008 THREADED BLOCK PSB06M CAP SCREW M6-1 X 25 P9972Z0011 SPINDLE PK123M...
  • Page 60 Change Gears Breakdown REF PART # DESCRIPTION PSS01M SET SCREW M6-1 X 10 P9972Z0102 BUSHING P9972Z0103 GEAR 45T P9972Z0104 GEAR 24T P9972Z0106 SHAFT PEC10M E-CLIP 9MM P9972Z0108 BALL OILER P9972Z0201 CHANGE GEAR BRACKET P9972Z0202 SPECIAL NUT PW03M FLAT WASHER 6MM P9972Z0204 SHAFT P4000405...
  • Page 61 Feed Rate Gearbox Breakdown...
  • Page 62 Feed Rate Gearbox Parts List REF PART # DESCRIPTION P9972Z0301 PLUG P0554446 O-RING 17 X 1.8 P9972Z0303 BUSHING P9972Z0304 GEAR 30-36-33T PK154M KEY 3 X 3 X 18 P9972Z0306 SHAFT P9972Z0307 BUSHING P9972Z0308 GEAR 22-44-33T P9972Z0309 PLUG PSB50M CAP SCREW M5-.8 X 10 P9972Z0311 BACK GEARBOX COVER P9972Z0312...

  • Page 63: Apron Breakdown

    Apron Breakdown Front Rear...

  • Page 64: Apron Parts List

    REF PART # DESCRIPTION P9972Z0401 APRON CASTING P9972Z0402 HANDLE SCREW P9972Z0403 WORM GEAR P9972Z0404 WORM GEAR KEY P9972Z0405 HANDLE HUB P9972Z0406 PIN 4 X 20 PN06M HEX NUT M5-.8 PSS34M SET SCREW M5-.8 X 16 P9972Z0341 STEEL BALL 5MM P9972Z0410 COMPRESSION SPRING P9972Z0411 HANDLE...
  • Page 65 Saddle & Cross Slide Breakdown REF PART # DESCRIPTION P9972Z0501 SADDLE P9972Z0502 CROSS SLIDE P9972Z0503 CROSS SLIDE GIB P9972Z0504 CROSS SLIDE LEADSCREW NUT P9972Z0505 CROSS SLIDE LEADSCREW P9972Z0506 LEADSCREW BRACKET PSB31M CAP SCREW M8-1.25 X 25 P9972Z0508 INDICATOR PLATE P9972Z0462 RIVET 2 X 5 P9972Z0510 CROSS SLIDE GRADUATED DIAL...
  • Page 66 Compound Slide & Tool Post Breakdown REF PART # DESCRIPTION P9972Z0601 COMPOUND SLIDE P9972Z0602 SWIVEL BASE P9972Z0603 COMPOUND SLIDE GIB P9972Z0604 CLAMPING RING P9972Z0605 CLAMPING BASE P9972Z0606 SPECIAL NUT P9972Z0607 SPECIAL PIN P9972Z0608 TOOL POST STUD PW04M FLAT WASHER 10MM P9972Z0610 SPECIAL PIN P9972Z0611...

  • Page 67: Tailstock Breakdown

    Tailstock Breakdown REF PART # DESCRIPTION P9972Z0701 TAILSTOCK QUILL MT#3 P9972Z0702 TAILSTOCK LEADSCREW P9972Z0703 BUSHING P9972Z0704 INDICATOR PLATE P9972Z0705 HANDWHEEL P9972Z0706 QUILL LOCK P9972Z0707 LOCK BUSHING PSS04M SET SCREW M6-1 X 12 P9972Z0709 GRADUATED DIAL P9972Z0710 SPRING PLATE P9972Z0711 SPACER P9972Z0712 TAILSTOCK CASTING P9972Z0713...

  • Page 68: Bed Breakdown

    REF PART # DESCRIPTION P9972Z0801 P9972Z0802 RACK PSB33M CAP SCREW M5-.8 X 12 P9972Z0804 FEED LEADSCREW INCH P9972Z0805 LEADSCREW END BRACKET P9972Z0108 BALL OILER PSB02M CAP SCREW M6-1 X 20 PN02M HEX NUT M10-1.5 Bed Breakdown REF PART # P9972Z0809 P9972Z0810 PN02M PSS44M...
  • Page 69 Steady Rest Breakdown REF PART # DESCRIPTION P9972Z0901 STEADY REST CASTING P9972Z0902 FINGER P9972Z0903 SPECIAL SCREW PLW04M LOCK WASHER 8MM PN01M HEX NUT M6-1 Follow Rest Breakdown REF PART # DESCRIPTION 1001 P9972Z1001 FOLLOW REST CASTING 1002 P9972Z0902 FINGER 1003 P9972Z0903 SPECIAL SCREW 1004 P9972Z0906 ADJUSTING SCREW...
  • Page 70 Electrical Components Breakdown PART # DESCRIPTION 1101 P9972Z1101 ELECTRICAL CABINET 1102 PSB06M CAP SCREW M6-1 X 25 1103 PLW03M LOCK WASHER 6MM 1104 P9972Z1104 ELECTRICAL CABINET COVER 1105 P9972Z1105 CAPACITOR COVER W/CLIP 1106 P9972Z1106 S CAPACITOR 150M 1106-1 P9972Z1106-1 R CAPACITOR 20M 1107 P9972Z1107 STRAIN RELIEF NUT 1/2"...

  • Page 71: Accessories Breakdown

    Accessories Breakdown REF PART # DESCRIPTION 1117 P9972Z1117 4-JAW CHUCK 6-1/4" 1118 P9972Z1118 DEAD CENTER MT#3 1121 P9972Z1121 TOOL BOX 1122 P9972Z1122 FACE PLATE 8" 1123 P9972Z1123 3-JAW CHUCK REVERSE JAW SET 1124 P9972Z1124 3-JAW CHUCK KEY 1125 P9972Z1125 4-JAW CHUCK KEY 1126 P9972Z1126 LIVE CENTER MT#4 1127 PWR810...

  • Page 72: Label Placement

    MUST maintain the original location and readability of the labels on the machine. If any label is removed or becomes unreadable, REPLACE that label before using the machine again. Contact Grizzly at (800) 523-4777 or www.grizzly.com to order new labels. Label Placement...

  • Page 75: Warranty And Returns

    WARRANTY AND RETURNS...

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