Grizzly G9249 Owner's Manual

Grizzly G9249 Owner's Manual

12" x 37" belt drive gap bed lathe
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MODEL G9249
12" X 37" BELT DRIVE
GAP BED LATHE
OWNER'S MANuAL
Copyright © MAy, 2008 By grizzly industriAl, inC.
WARNING: NO PORTION Of THIS MANuAL MAy BE REPRODucED IN ANy SHAPE
OR fORM WITHOuT THE WRITTEN APPROVAL Of GRIzzLy INDuSTRIAL, INc.
#ts10612 printed in ChinA

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Summary of Contents for Grizzly G9249

  • Page 1 12" X 37" BELT DRIVE GAP BED LATHE OWNER'S MANuAL Copyright © MAy, 2008 By grizzly industriAl, inC. WARNING: NO PORTION Of THIS MANuAL MAy BE REPRODucED IN ANy SHAPE OR fORM WITHOuT THE WRITTEN APPROVAL Of GRIzzLy INDuSTRIAL, INc. #ts10612 printed in ChinA...
  • Page 3: Table Of Contents

    ... 11 unpacking ... 11 inventory ... 12 Clean up ... 13 site Considerations ... 14 lathe Assembly & placement ... 14 Mounting to shop Floor ... 16 Check gearbox oil ... 17 test run ... 17 spindle Break-in ... 19 recommended Adjustments ...
  • Page 4: Introduction

    INTRODucTION foreword We are proud to offer the Model g9249 12" x 37" Belt drive gap Bed lathe. this machine is part of a growing grizzly family of fine metal-working machinery. When used according to the guidelines set forth in this manual, you can expect years of trouble-free, enjoyable operation and proof of grizzly’s commitment to customer satisfaction.
  • Page 5: Identification

    Cross slide M. Compound slide N. tailstock Quill Mt#3 O. Quill lock P. tailstock lock Q. Quill handwheel g9249 12" x 37" Belt drive gap Bed lathe Identification figure 1. Model g9249 identification. R. tailstock S. longitudinal leadscrew Feed rod u.
  • Page 6: Machine Data Sheet

    Machine Data Sheet Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G9249 12" X 37" BELT DRIVE GAP BED LATHE Product Dimensions: Weight... 1136 lbs. Length/Width/Height... 64 x 27 x 49 in.
  • Page 7 The information contained herein is deemed accurate as of 5/29/2008 and represents our most recent product specifications. Model G9249 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. g9249 12" x 37" Belt drive gap Bed lathe PAGE 2 OF 3...
  • Page 8 The information contained herein is deemed accurate as of 5/29/2008 and represents our most recent product specifications. Model G9249 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. g9249 12" x 37" Belt drive gap Bed lathe PAGE 3 OF 3...
  • Page 9: Section 1: Safety

    Safety Instructions for Machinery g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 10 12" x 37" Belt drive gap Bed lathe...
  • Page 11: Additional Safety Instructions

    12" x 37" Belt drive gap Bed lathe for Metal Lathes MOuNTING WORKPIEcE. Make sure the workpiece is properly mounted before starting the lathe.
  • Page 12: Section 2: Circuit Requirements

    50 feet in length! • the extension cord must also have a ground wire and plug pin. • A qualified electrician Must size cords over 50 feet long to prevent motor damage. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 13: Section 3: Setup

    If normal safety precautions are overlooked or ignored, seri- ous personal injury may occur. g9249 12" x 37" Belt drive gap Bed lathe Items Needed for Setup the following items are needed to complete the...
  • Page 14: Inventory

    (e.g. a nut or a washer), we will gladly replace them; or for the sake of expediency, replacements can be obtained at your local hardware store. -12- figure 3. Box 1 inventory. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 15: Clean Up

    12" x 37" Belt drive gap Bed lathe clean up the unpainted surfaces are coated with a waxy oil to prevent corrosion during shipment. remove this protective coating with a solvent cleaner or degreaser shown in figure 6.
  • Page 16: Site Considerations

    M6-1 x 10 phillips head screws, flat wash- ers, and M6-1 hex nuts. g9249 12" x 37" Belt drive gap Bed lathe Center panel...
  • Page 17 If the lathe falls or tips over while moving it, serious personal injury and property damage could result. g9249 12" x 37" Belt drive gap Bed lathe prevent damage to the leadscrew, feed rod, and the spindle direction rod by threading the lifting straps between the bedway and the rods, as shown in figure 11.
  • Page 18: Mounting To Shop Floor

    If you choose to remove the gap, we DO NOT recommend replacing it. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 19: Check Gearbox Oil

    12" x 37" Belt drive gap Bed lathe To test run the machine: Make sure you understand the safety instruc- tions at the beginning of the manual and that the machine is setup properly.
  • Page 20 2"—the machine should not start. c. lift the chuck guard up no more than 2"—the machine should not start. 13. After successfully completing all the Test Run steps, proceed to Spindle Break-In. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 21: Spindle Break-In

    11. turn the lathe OFF. the spindle break-in is complete and your lathe is ready for opera- tion. g9249 12" x 37" Belt drive gap Bed lathe Recommended Adjustments For your convenience, the adjustments listed below have been performed at the factory.
  • Page 22: Section 4: Operations

    B. Emergency Stop Button: stops the flow of power to the motor. this button must reset before the machine can start again. c. Jog Button: rotate the spindle clockwise when pressed. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 23: Carriage Controls

    12" x 37" Belt drive gap Bed lathe E. Spindle Direction Lever: starts, reverses or stops the spindle rotation, and feed rod or leadscrew if engaged.
  • Page 24: Chuck & Faceplate Mounting/Removal

    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. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 25: Mounting A Workpiece

    Carefully and slowly rotate the chuck or face- plate clockwise onto the spindle until you feel resistance. g9249 12" x 37" Belt drive gap Bed lathe rotate the chuck or faceplate counterclock- wise a ⁄ turn, then quickly rotate it back clockwise to seat the threads.
  • Page 26 Clean the jaw mating surfaces and apply a film of light multi-purpose grease to these surfaces. Note: Store jaws in a place free from mois- ture and abrasives. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 27 Tools Needed Chuck Key ... 1 g9249 12" x 37" Belt drive gap Bed lathe To mount a workpiece on the 4-jaw chuck: disConneCt lAthe FroM poWer! use a piece of wood to protect the bedways.
  • Page 28: Centers

    Clean away any grime or oily substance from the tapered mating surfaces of the sleeve and center. install the center into the spindle sleeve, then seat the assembly into the spindle. Faceplate g9249 12" x 37" Belt drive gap Bed lathe centers sleeve dead Centers...
  • Page 29: Tailstock

    12" x 37" Belt drive gap Bed lathe Tailstock the tailstock of the Model g9249 can be used to support workpieces with the use of a live (rotating) or dead (stationary) center. Mount the drill chuck and arbor into the quill to center drill or bore holes.
  • Page 30: Offsetting Tailstock

    (refer to Assembly and Placement on Page 14 for detailed instructions). get two pieces of steel round stock, 2" in diameter by 6" long. g9249 12" x 37" Belt drive gap Bed lathe Turn Turn adjustment screws.
  • Page 31 36. tailstock centering dead center. place the live center in the tailstock. g9249 12" x 37" Belt drive gap Bed lathe Attach a lathe dog to the bar stock from Step 3 and mount it between the centers (see figure 37).
  • Page 32: Drilling With Tailstock

    41. inserting tapered drill bit into the tailstock quill. To remove a tapered drill arbor or drill bit: turn the quill feed handle counterclockwise until the tool is pushed out from the tailstock taper. g9249 12" x 37" Belt drive gap Bed lathe drill Chuck...
  • Page 33: Steady Rest

    Knob Clamp Block figure 42. steady rest controls. g9249 12" x 37" Belt drive gap Bed lathe loosen the lock knob, swing it out of the way, then open the steady rest to fit the workpiece inside, as shown in figure 43, then close and secure the top of the steady rest.
  • Page 34: Follow Rest

    ⁄ of the dial reading, but removes the amount the dial indicates from the diameter of the workpiece. g9249 12" x 37" Belt drive gap Bed lathe Resolution Cross slide Compound...
  • Page 35: Compound Slide

    12" x 37" Belt drive gap Bed lathe Resolution the Model g9249 ships with a standard tool post and a 4-way tool post. the advantage of the...
  • Page 36: Spindle Speed

    Instructions for engaging the back gear are on Page 35. DIRECT BACK GEAR figure 49. spindle speed configuration chart. g9249 12" x 37" Belt drive gap Bed lathe Cutting Speed (SFM) x 4 Diameter of Cut /min. 1200...
  • Page 37 12" x 37" Belt drive gap Bed lathe To engage the back gears: disConneCt lAthe FroM poWer! pull out the lock pin shown in figure 51, and rotate it 90°...
  • Page 38: Power Feed

    Never engage the half-nut with the leadscrew when using the feed rod for carriage or cross slide movement. failure to follow this instruction will lead to permanent dam- age to the carriage and leadscrew mecha- nisms. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 39: Setting Feed Rate

    40T/127T/40T configu- ration, which will cover most feed rates and inch threading. g9249 12" x 37" Belt drive gap Bed lathe 0.75 0.6 0.5 refer to the table in figure 53 and find the value closest to your desired feed rate either...
  • Page 40: Change Gears

    12" x 37" Belt drive gap Bed lathe...
  • Page 41 120t (smaller) middle change gear, point the gear flange toward the headstock. figure 57. Change gear. g9249 12" x 37" Belt drive gap Bed lathe for smooth operation and to reduce wear of the change gears, always make sure to...
  • Page 42: Threading Operation

    Failure to start on the same number each time may lead to cutting off the thread made in the previous pass. T.P.I. thread dial g9249 12" x 37" Belt drive gap Bed lathe INDICATOR TABLE SCALE T.P.I. SCALE...
  • Page 43 10. turn ON the spindle and engage the half nut according to the thread dial to cut your threads. g9249 12" x 37" Belt drive gap Bed lathe METRIC THREAD TABLE 1.5 1.2 0.75 0.6 0.5 INCH THREAD TABLE T.P.I.
  • Page 44: Section 5: Accessories

    1" dial indicator (.001"), and 6" dial caliper (.001"). the extremely low price has made this a very popular seller! figure 65. h3022 Measurement tool set. g9249 12" x 37" Belt drive gap Bed lathe ⁄ ", ⁄...
  • Page 45 (g8235-37) on your grinder. figure 67. h2670 hss square tool Bits. g9249 12" x 37" Belt drive gap Bed lathe Glance 7-Pc. Insert Turning Tool Sets H5680—5/16" H5682—1/2"...
  • Page 46 H2991—3" Bent Lathe Dog Just the thing for precision machining between centers! these bent tail lathe dogs are made of durable cast iron and feature square head bolts. figure 73. h2987-91 lathe dogs. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 47 75. grizzly dial Calipers. ® g9249 12" x 37" Belt drive gap Bed lathe G9849—Magnetic Base/Dial Indicator combo precision measurements and setups have never been so easy. Magnetic base engages with just the turn of a switch and allows pinpoint adjust- ment.
  • Page 48: Section 6: Maintenance

    • Keep unpainted cast iron surfaces, especially the bedways, rust-free with regular appli- cations like Model h8257 primrose Armor plate with Moly-d Machine and Way oil (see AccESSORIES on Page 42). g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 49: Lubrication

    78. figure 78. spindle bearing reservoir oil plugs. g9249 12" x 37" Belt drive gap Bed lathe Fill both spindle bearing reservoirs with oil until the oil level in the sight glasses shows at least half-way (see figure 79).
  • Page 50: Headstock Gears

    (see figure 82), add 2–3 drops of lubricant, then replace the oil plugs. pump spindle gears figure 82. Feed rate gearbox oil plugs. g9249 12" x 37" Belt drive gap Bed lathe frequency every thin 8 hours Coat of operation...
  • Page 51 12" x 37" Belt drive gap Bed lathe Apron Gearbox Lubricant iso 68 sAe 20W need-...
  • Page 52: Ball Oilers

    Add one pump from a grease gun to the back gear shaft grease fitting shown in figure 89. figure 89. Back gear shaft grease fitting. g9249 12" x 37" Belt drive gap Bed lathe Ball oilers figure 88. tailstock ball oilers.
  • Page 53: Tensioning/Replacing V-Belts

    91). figure 91. Checking motor V-belt tension. g9249 12" x 37" Belt drive gap Bed lathe to adjust the motor V-belt tension, loosen the jam nuts shown in figure 92, then adjust the tensioning hex bolt to raise or lower the motor.
  • Page 54 Carry a power twist V-Belt in your vehicle for a fix any- ® where solution to broken fan belts. figure 94. power twist ® g9249 12" x 37" Belt drive gap Bed lathe V-Belts ® V-Belt.
  • Page 55: Section 7: Service

    7. Workpiece or chuck is at fault. 8. spindle bearings are at fault. 9. Motor bearings are at fault. 10. gears are at fault. g9249 12" x 37" Belt drive gap Bed lathe Troubleshooting possible solution 1. rotate the emergency stop button clockwise until it pops out, or replace faulty emergency stop button.
  • Page 56 11. Clear obstacles away from the motor fan cover, let motor cool, and reduce workload on machine. 12. test; replace if necessary. 13. test/repair/replace. 14. Adjust/replace. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 57 1. Quill lock is tightened down. feed out of tailstock. g9249 12" x 37" Belt drive gap Bed lathe possible solution 1. Adjust for proper spindle speed and feed rate (Page 34). 2. use sharp tools; use correct tool for the operation.
  • Page 58: Adjusting Gibs

    96. Cross and compound slide rear gib adjustment screws. Compound slide Front gib Adjustment screw Cross slide Front gib Adjustment screw figure 97. Cross and compound slide front gib adjustment screws. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 59: Tailstock Lock

    1/4 turn at a time until the tailstock will not move when locked. repeat this step as necessary. g9249 12" x 37" Belt drive gap Bed lathe cross Slide Backlash Backlash is the amount of play in the handwheel, felt when turning the handwheel, but before the slide begins to move.
  • Page 60: Gap Removal

    -58- Spindle Bearing the Model g9249 is shipped from the factory with the spindle bearing preload properly adjusted. however, if the spindle ever develops enough end-play that the workpiece finish suffers, you can adjust the bearing preload to remove the end-play.
  • Page 61 Step 7, to help unload the spindle and break the inner span- ner nut loose. g9249 12" x 37" Belt drive gap Bed lathe place a wooden block over the outboard end of the spindle tube (see figure 103 for an example) and hit it soundly with a small sledge or heavy dead blow hammer.
  • Page 62 — if the inboard end of the spindle tube is hotter than you can comfortably keep your hand on, the preload is too tight and you must repeat the spindle bearing preload adjustment procedure. g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 63: Rest Finger Tips

    12" x 37" Belt drive gap Bed lathe to re-install the finger, align the finger key- way with the set screw, slide the finger into the rest, then tighten the adjustment knob to hold the finger in place.
  • Page 64: Adjusting Half-Nut

    Steps 4–5 until the set screws are just snug—do not overtighten them. re-install the thread dial. Cap screw g9249 12" x 37" Belt drive gap Bed lathe half-nut...
  • Page 65: Section 8: Wiring

    Compliance Must be verified by a qualified electrician. WIRE COLOR KEY g9249 12" x 37" Belt drive gap Bed lathe cIRcuIT REQuIREMENTS. you Must fol- low the cIRcuIT REQuIREMENTS section on Page 10. If you are unsure about the...
  • Page 66: Wiring Overview

    Electrical Safety Instructions on Page 63. Wiring Overview control Panel diagram on Page 66 Motor diagram on Page 66 g9249 12" x 37" Belt drive gap Bed lathe figure 110. spindle switch wiring. figure 111. Chuck guard safety switch wiring.
  • Page 67: Electrical Cabinet Wiring Diagram

    Electrical cabinet Wiring Diagram g9249 12" x 37" Belt drive gap Bed lathe You MUST read and understand the Electrical Safety Instructions on Page 63. B. power (Page 64) c. Motor (Page 66) D. Chuck guard safety switch (Page 64) E.
  • Page 68: Control Panel & Motor Wiring Diagrams

    Electrical Safety Instructions on Page 63. control Panel figure 113. Control panel wiring. Motor 2HP 220V 60Hz Run Capacitor 20MFD 400VAC Start Capacitor 200MFD 250VAC g9249 12" x 37" Belt drive gap Bed lathe Single-Phase to electrical Box (Page 65)
  • Page 69: Section 9: Parts

    ECCENTRIC BRACKET PSS02M SET SCREW M6-1 X 6 PSB26M CAP SCREW M6-1 X 12 P9249015 SWITCH BRACKET P9249016 g9249 12" x 37" Belt drive gap Bed lathe REF PART # DESCRIPTION P9249017 LEADSCREW BUSHING PRP05M ROLL PIN 5 X 30 P9249019...
  • Page 70: Headstock

    Headstock -68- g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 71: Headstock Parts List

    P9249081 V-BELT B-813 P9249083 GEARBOX COVER PB20M HEX BOLT M8-1.25 X 35 PSB14M CAP SCREW M8-1.25 X 20 g9249 12" x 37" Belt drive gap Bed lathe REF PART # DESCRIPTION P9249086 HINGE PRP49M ROLL PIN 5 X 25 P9249088...
  • Page 72 SHAFT PK23M KEY 5 X 5 X 25 PW01M FLAT WASHER 8MM P9249158 BUSHING P9249160 3-JAW CHUCK 6" 161-1 P9249161-1 3-JAW BACKPLATE P9249953 CHIP GUARD PLEXIGLASS 953-1 P9249953-1 CHIP GUARD SHAFT g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 73: Feed Rate Gearbox

    Rate Gearbox -71- g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 74 SHAFT P9249276 LEVER M10-1.5 X 50 P9249277 HANDLE PRP28M ROLL PIN 5 X 40 P9249279 STEEL BALL 6MM P9249280 COMPRESSION SPRING 1 X 4.5 X 16-2 P9249281 HANDLE HUB P9249282 SHAFT g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 75: Apron

    Apron -73- g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 76: Apron Parts List

    P9249358 PK29M P9249360 P9249361 P9249362 PSS74M PN03M g9249 12" x 37" Belt drive gap Bed lathe DESCRIPTION CAP SCREW M6-1 X 45 WORM GEAR GEAR SHAFT 16 X 116T KEY 4 X 4 X 20 ROLL PIN 5 X 30...
  • Page 77: Carriage

    -75- g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 78: Carriage Parts List

    COMPRESSION SPRING .8 X 5 X 1.5 P9249463 LOCK PIN P9249464 4-WAY TOOL POST P9249465 TOOL POST SCREW M6-1 X 4 PW23M FLAT WASHER 30MM P9249467 HANDLE HUB P9249468 HANDLE P9249469 SADDLE GIB g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 79: Tailstock

    TAILSTOCK CASTING PRP49M ROLL PIN 5 X 25 P9249517 ECCENTRIC AXLE P9249518 BUSHING P9249519 CLAMPING BOLT M12-1.75 X 100 g9249 12" x 37" Belt drive gap Bed lathe Tailstock REF PART # DESCRIPTION P9249520 CLAMPING BLOCK PW06M FLAT WASHER 12MM PN09M HEX NUT M12-1.75...
  • Page 80: Spindle Lever

    P9249608 P9249609 PRP45M P9249279 P9249612 PSS16M P9249614 g9249 12" x 37" Belt drive gap Bed lathe DESCRIPTION COMPRESSION SPRING 1 X 6 X 22 COVER ROLL PIN 5 X 32 STEEL BALL 6MM COMPRESSION SPRING 1 X 6 X 9 SET SCREW M8-1.25 X 10...
  • Page 81: Change Gear Cover

    CAP SCREW M6-1 X 16 P9249653 HINGE P9249654 HINGE SCREW M6 X 10 P9249655 BRACKET PSB01M CAP SCREW M6-1 X 16 g9249 12" x 37" Belt drive gap Bed lathe REF PART # DESCRIPTION P9249657 LOCKING ROD PN13M HEX NUT M16-2 P9249659 THREADED SLEEVE...
  • Page 82: Steady Rest

    P9249711 P9249712 P9249713 PRP05M P9249715 PN09M PW06M P9249718 PB140M g9249 12" x 37" Belt drive gap Bed lathe DESCRIPTION HEX BOLT M6-1 X 25 STEADY REST COVER KNOB LEVER ROLL PIN 5 X 30 STEADY REST BASE HEX NUT M12-1.75...
  • Page 83: Follow Rest

    STAR HANDLE M8-1.25 X 30 PRP02M ROLL PIN 3 X 16 P9249803 COLLAR P9249704 ADJUSTING SCREW M8 X 40 P9249805 BUSHING g9249 12" x 37" Belt drive gap Bed lathe follow Rest REF PART # P9249806 PSS03M PSS11M PN01M PSB40M P9249811...
  • Page 84: Electrical Cabinet

    Electrical cabinet -82- g9249 12" x 37" Belt drive gap Bed lathe...
  • Page 85 POWER LAMP BULB P9249926 JOG BUTTON P9249927 EMERGENCY STOP SWITCH P9249928 SAFETY SWITCH CABLE P9249929 STRAIN RELIEF 5/8" g9249 12" x 37" Belt drive gap Bed lathe REF PART # DESCRIPTION P9249930 STRAIN RELIEF 3/4" P9249931 STRAIN RELIEF 7/8" P9249933 HINGE...
  • Page 86: Cabinet Stand

    1013-1 P92491013-1 DOOR LATCH 1014 P92491014 1015 P92491015 1016 P92491016 g9249 12" x 37" Belt drive gap Bed lathe DESCRIPTION HEX BOLT M12-1.75 X 50 CENTER PANEL BRACKET RIGHT CABINET RIGHT CABINET DOOR LEFT CABINET DOOR RIGHT CHIP PAN RUBBER GASKET LEFT...
  • Page 87: Accessories

    HEX WRENCH 8MM 1106 PAW06M HEX WRENCH 6MM 1107 PAW05M HEX WRENCH 5MM 1108 PAW04M HEX WRENCH 4MM g9249 12" x 37" Belt drive gap Bed lathe Accessories REF PART # DESCRIPTION 1109 PAW03M HEX WRENCH 3MM 1110 P92491110 SPINDLE SLEEVE MT#3-MT#5...
  • Page 88: 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. -86-...
  • Page 91: Warranty And Returns

    WARRANTy AND RETuRNS...

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