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Grizzly G9249 Lathe User Manual

1. 3 1 2 AAV VMS TA cc 31 1 2 in Cross Slide 6 in Headstock Info gt Um iiid acsi mb MM M Si ME M ET 1 7 16 in 25 MM 2 1 4 in gt NERO 5 PD O 8 NO OL SpIIDdle 12 Range Of Spindle n 50 1200 RPM Threaded 5 1 11 2 Emm Tapered Roller Tailstock Info U 054i 3 in Tailstock Tapal er Tailstock Barrel 1 1 4 in Threading Info No Of eMe S 50 Range INC TNS E 4 112 Range Of Longitudinal Feeds 0 0047 0 0165 No Of Longitudinal e 16 Pene EET 16 Range Of Hm 0 0023 0 0082 in rev ez 54 NO i o TREE 24 Range Of Metric ThEGaUS i inet htt nein
2. 0 25 7 5 mm Dimensions T 7 1 8 in 8 Lodd crow 45 in A E erem 10 in Leadscrew 21011212 TT 7 8 in Feed ONS MNT 3 4 in Foor TO SE e Tc 44 1 2 in Construction Base OS I E Cast Iron FIEAGSIOCK Cast Iron Headstock Gears COnDSITUCIOLD uiae eade Cast Iron Bed 6 812 111116 0 Induction Hardened Cast Iron 08 14 MR tree eee Cast IC NO TET E RET Formed Steel mij eR C kee Epoxy Other 1 119 G9249 12 x 37 Belt Drive Gap Bed Lathe o Other Specifications Or ONO China PR 1 Serial Number Front Center Headstock Features Carriage Mounted On Off Control Lever Chip Tray Chuck Safety Guard Full Length Splash Guard Heavy Duty Stand Helical Back Gears Inch Metric Dials Micro Switches Shut Off Machine When Side Door o
3. 9 996 Control Panel Diagram on Page 66 Figure 110 Spindle switch wiring 241 0 1 m Figure 111 Chuck guard safety switch wiring B KS NEMA 6 15 Plug As Recommended Motor Diagram on Page 66 Figure 112 Change gear door safety switch wiring 64 You MUST read and understand the Electrical Safety Instructions on 63 o G9249 12 x 37 Belt Drive Gap Bed Lathe Electrical Cabinet Wiring Diagram 111 3 L2 g 5 3 21NC 111 3 12 5 3 S 312 5 13NO 80 D 220V Contactor 220V Contactor 220V Contactor Juche CJX2 1201 Juche CJX2 1201 Juche CJX2 1201 2 412 6 73 22NC 211 4 T2 673 22N OL Relay Juche JR28 25 98 NO 97 95 NC 96 Qe 2 11 4 72 6 T3 vg 5 Transformer Juche JBK5 63 24V T 13 U2 N2 S 3 52 2 2 2 2 8 2 8 5 1 1 64 Motor Page 66 Chuck guard Safety Switch Page 64 Change Gear Door Safety Switch Page 64 Control Panel P
4. CN SOS 3 S WAS a N N lt N A A N Q 029 A AY of 2 7 lt N 2 J 2 XA S 2 2 NN 2 T 7 6 gt gt __ 260 22 e WS LC A 66 e 99 67 E S 4 a 29 d x 4 2 MS o eo 7 P AY Y 9 N 5 N QA v 27 2023 Of D Q 59 st G9249 12 x 37 Drive Bed Lathe o 71 R 20 20 20 20 20 20 20 20 20 210 211 212 213 214 215 216 217 218 22 22 22 22 22 22 22 22 23 23 2 2 2 2 2 2 2 23 24 24 24 24 m F 100 CO m ojdcj o ojor o nm o cdc o Oo CcCIi 3 C05 n5 72 Feed Rate Gearbox Parts List DESCRIPTION REF CAP SCREW M6 1 X 12 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 P9249243 SHAFT 9 PART DESCRIPTION PROSM EXT RETAINING RING 12MM G9249 12 x 37 Belt Drive Gap Bed Lathe G9249 12 x 37 Drive Gap Bed Lathe Apron 2 24 9 48757574 343 344 Ld ED 73 Apron Parts List REF PART DESCRIPTION 301 9249301 COLLAR 25MM 302 303 304 305 306 307 308 309 310 311 313 314 315 316
5. ud Ee 80 M E 26 aic NR 81 TAUISIOCK MET 27 Electrical 82 Offsetting Tailstock 28 Cabinet Stand EROR T 84 Aligning 2 2 28 5 85 Drilling with Tailstock 30 Label Placement TET 86 Steady 31 Folow 32 WARRANTY AND RETURNS irnn 2 5055 elo 32 Compound Slide smash 33 NR 33 Spindle 34 Power cie 36 Setting Feed 37 Change 38 Threading Operation 40 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 The specifications drawings and photographs illustrated in this manual represent the Model G9249 when the manual was prepared However owing to Grizzly s policy of continuous improve ment changes
6. 69 O S7 S 80 W e 151 153 V AO 4 E 4 Q SM e 59 No gt 80 3 N OW OO es fi QY 2 9 n re P C e 9 xt C NS LO 68 o 29249 12 x 37 Belt Drive Gap Bed Lathe Headstock Parts List REF PART DESCRIPTION 51 P9249051 BRACKET AXLE 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 75 1 75 2 75 3 75 4 75 5 75 6 76 77 78 79 80 81 83 84 85 G9249 12 x 37 Belt Drive Gap Bed Lathe REF 9 PART DESCRIPTION P9249086 HINGE 69 Headstock Parts List REF PART DESCRIPTION 126 P9249126 BUSHING 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 70 REF 145 146 147 148 149 150 151 152 153 154 155 156 157 158 160 161 1 953 953 1 9 PART DESCRIPTION PNO9M HEX NUT M12 1 75 G9249 12 x 37 Belt Drive Gap Bed Lathe Feed Rate Gearbox N N Y o NS co N N 4 SS N Y N N RN d 4 Ni 6 i N 920 Y 9 CN CN 7 ASOD VON 2 LO QN NN Al S N N C N N NS N 5 Qm N 8 gt 5 Ks 5 NS 1d N 22 AX
7. 19249 12 37 Drive Gap Bed Lathe Feed Rate Gears Apron Gearbox Multi Purpose Gear Every ISO 68 SAE 20W Every As need Grease 40 Hours Bearing and Gear 40 Hours ed of Operation Lubricant of Operation To lubricate the feed rate gears Remove the oil plug on top of the apron shown in Figure 84 add lubricant then replace the oil plug 1 Use a 5mm hex wrench to remove the four The apron gearbox reservoir holds approximately cap screws securing the feed rate gearbox 3 4 of a pint of lubricant Excess lubricant will leak cover see Figure 83 from the front of the apron qw te o E PN gt Oil Plug 1 EDING TABLE M m Figure 83 Feed rate gearbox cover Figure 84 Apron lubrication Bois 2 Carefully pull the cover from the machine tak ing care not to bend the aligning pins 3 Use a brush to apply a thin coat of grease to the gear teeth 4 Use the aligning pins to properly position the cover on the machine then secure it with the four cap screws G9249 12 x 37 Belt Drive Gap Bed Lathe o 49 Ball Oilers ISO 68 SAE Every 8 Hours 1 squirt 20W Bearing and of Operation from oil can Gear Lubricant Wipe clean and lubricate the ball oilers shown in Figures 85 88 To insert the oil depress the ball with the tip of an oil can and squirt once A Compound Slide 22 11 Figure 85 Cross and compound slide ball oilers 7 total Saddle
8. Tools Needed Qty Wrench 19 0 1 Wrench 10MM 1 Standard Screwdriver 1 1 To install and use the steady rest 1 Remove the clamp hex nut flat washer and clamp block from the bottom of the steady rest 2 Clean away any debris or grime from the bedways the steady rest ways and the clamp block 3 Position the steady rest on the bedway so the triangular notch fits over the rear angled rail of the bedway as shown in Figure 42 then re install and tighten the clamp block XX 2 Block 7 E aid CA Figure 42 Steady rest controls 17 G9249 12 x 37 Drive Gap Bed Lathe 4 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 Figure 43 Workpiece TE inside the steady rest 5 Loosen the jam nuts and set screws see Figure 42 turn the adjustment knobs to fit the fingers snug to the workpiece then re tighten the set screws and jam nuts Note fingers should be snug enough to fully support the workpiece at all three points and also allow free rotational movement of the workpiece 6 Lubricate the finger tips with an anti seize grease during operation 31 Follow Rest The follow rest shown in Figure 44 is mounted on the front of the saddle and follows the movement of the tool al
9. 9249316 317 318 319 320 321 322 323 324 9249324 HANDLE HUB 325 326 327 328 329 9249329 330 331 332 9249332 2 5 X5 333 9249333 THREAD DIAL HOUSING 74 R 33 33 33 33 33 33 34 34 34 34 34 34 34 34 34 34 35 35 35 35 35 35 35 35 35 35 36 36 36 36 36 m F AJOIN 2 COo O1 gt 9 PART DESCRIPTION PSB30M CAP SCREW 6 1 X 45 G9249 12 x 37 Belt Drive Gap Bed Lathe 446 447 445 444 442 468 e 939 st 0 A N 19249 12 37 Drive Bed Lathe o 75 Carriage Parts List REF PART DESCRIPTION REF 401 P9249401 SADDLE 435 402 436 408 437 404 438 405 439 406 442 407 443 408 444 409 445 410 446 411 447 412 448 413 449 414 450 415 451 416 452 417 453 418 454 419 455 420 456 421 457 422 458 423 459 424 460 425 461 426 462 427 463 428 464 429 465 430 466 431 467 432 468 493 469 434 76 9 PART DESCRIPTION P9249435 SPECIAL NUT G9249 12 x 37 Belt Drive Gap Bed Lathe Tailstock CL 520 537 REF PART DESCRIPTION REF PART DESCRIPTION 502 1 9249502 TAILSTOCK QUILL 520 9249520 CLAMPING BLOCK 503 P9249508 T KEY 521 504 P9249504 LEADSCREW NUT M15 522 505 9801
10. SET SCREW M6 1 X 10 523 506 524 507 525 508 526 509 527 510 528 511 529 512 530 513 531 514 532 515 533 516 534 517 535 518 P9249518 BUSHING 536 9249536 CLAMP BLOCK 519 P9249519 CLAMPING BOLT M12 1 75 X 100 537 P9249537 TAILSTOCK BASE G9249 12 x 37 Belt Drive Gap Bed Lathe 77 Spindle Lever 602 607 7 605 P 603 77 XL SE 2 d 5 3 NS 0 601 606 2 22 604 608 610 2 P di SEF 609 FK 611 614 i 613 S o gt 5 2 612 DESCRIPTION REF DESCRIPTION 601 PRP14M ROLL PIN 3 X 6 608 9249608 COMPRESSION SPRING 1 X 6 X 22 602 KEY 5X 5X 18 609 9249609 COVER 603 9249603 BUSHING 610 PRP45M ROLL PIN 5 X 32 604 9249604 LEVER BRACKET 611 9249279 STEEL BALL 6MM 605 PSB26M CAP SCREW M6 1 X 12 612 9249612 COMPRESSION SPRING 1 X 6 X 9 606 9249606 HANDLE 613 5516 SET SCREW 8 1 25 X 10 607 P9249607 KNOB M10 X 50 614 9249614 TAPERED SET SCREW M8 1 25 X 12 78 o G9249 12 x 37 Belt Drive Gap Bed Lathe Change Gear Cover 653 654 VI 22 656 657 658 Je 660 7 REF PART DESCRIPTION REF PART DESCRIPTION 651 PSB26M CHANGE GEAR COVER 657 P9249657 LOCKING ROD 652 658 653 P9249653 HINGE 659 P9249659 THREADED SLEEVE 654 P9249654 HINGE SCREW M6 X 10 660 P9249660 KNOB M8 X 32 655 P9249655 BRACKET 661 PRPO2M ROLL PIN 3 X 16 656 5 1 CAP
11. citus n pe 10 amp I Motors Main 1 ct TEFC Capacitor Start Induction FO REIN E 2 nr iue e 220V mil 220V gil Single Dino EN 7 5A BS ar E TEM 1725 gr M HH 60 Hz Number Of Speeds RR 1 POWE TaN Belt Drive T Shielded and Permanently Lubricated 4 G9249 12 x 37 Belt Drive Gap Bed Lathe Main Specifications Operation Info owing ii 12 in Bii iN 37 in SWING OVER ClhOSS SCG 6 3 4 21 11 Over Ae 6 1 2 egeat 18 7 8 in 0 8 1001 115268 NER TE D om mE 5 8 in
12. 11 a lana a Set p 11 en EE E i BEN 62 Items Needed for 11 MTS ACI UNO 11 SECTION 8 WIRING 63 Ine E 12 Electrical Safety Instructions 63 Gleam 13 Wiring 64 14 Electrical Cabinet Wiring Diagram 65 Lathe Assembly amp Placement 14 Control Panel amp Motor Wiring Diagrams 66 Mounting to Shop 16 Check Gearbox 17 LE a pU Acer ee eee ee ete ee 17 eee eee ene 67 Headstock 68 Spindle 1 19 Feed Bate Gearbox 7 Recommended Adjustments 73 SECTION 4 OPERATIONS 20 75 Operation 20 77 20 Spindle Lever 2 78 Chuck amp Faceplate Mounting Remowval 22 Change Gear 79 Mounting a Workpiece 23 Steady HOS
13. 2 Insert round bar stock at least 1 1 4 in diameter in the outbound end of the spindle tube and up against the back of the spindle sleeve 3 Use a dead blow hammer to tap the bar with enough force to knock the spindle sleeve loose from the spindle taper Note Use caution when inserting the bar stock into the spindle to avoid damaging the inside surface of the spindle tube G9249 12 x 37 Belt Drive Gap Bed Lathe 9 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 The tailstock can also be used for cutting shallow tapers by adjusting the offset Installing a Tapered Tool into the Quill 1 Position and lock the tailstock in place and unlock the quill 2 Rotate the quill handwheel clockwise to extend the quill about 1 3 Clean debris and grime from the tapered mat ing surfaces of the tool and the inside of the quill 4 Insert the tapered device into the quill until the taper is firmly seated The matching tapers hold the device into the quill see Figure 33 for an example Figure 33 Inserting a tapered dead center into the tailstock quill 5 Usethequillhandwheelto move the tooltoward and away from the rotating workpiece 6 To remove the tapered tool support it with one hand and retract the quill by turning the handw
14. 4 Industrial Inc MODEL G9249 12 37 BELT DRIVE GAP BED LATHE OWNER S MANUAL m 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 41910612 PRINTED IN CHINA WARNING This manual provides critical safety instructions on proper setup operation maintenance and service of this machine equipment Failure to read understand and follow the instructions given in this manual may result in serious personal injury including amputation electrocution or death The owner of this machine equipment is solely responsible for its safe use This responsibility includes but is not limited to proper installation in a safe environment personnel training and usage authorization proper inspection and maintenance manual availability and comprehension application of safety devices blade cutter integ rity and the usage of personal protective equipment The manufacturer will not be held liable for injury or property damage from negligence improper training machine modifications or misuse WARNING Some dust created by power sanding sawing grinding drilling and other construction activities contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Some examples of these chemicals are Lead
15. S travel 9 12 Without causing the inner spanner nut to tighten any further install and tighten the outer spanner nut against the inner nut Note Do not overtighten the outer spanner nut because additional preload can force the bearings even tighter against the races in the headstock and cause the headstock to com press or crack or cause bearing failure 13 Re install the change gear door To confirm that the bearings are correctly pre loaded 1 Make sure all safety precautions have been taken and setup steps are complete to make the lathe fully operational Hemove all tools and materials used during the bearing preload process Set the spindle speed to its highest setting Connect the lathe to power and turn it ON Let the lathe run for 20 minutes Turn the spindle OFF disconnect the lathe from power and check the temperature of the spindle lf the inboard end of the spindle tube is slightly warm to the touch you have the correct bearing preload lf 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 Rest Finger Tips Type of Finger Tip Part Number Steady 9249706 Follow TAC SU P9249806 The steady rest and follow rest fingers can be easily removed
16. Every Fill to Half on Sight of Operation Glass Bearing and Gear 8 Hours Lubricant To add oil to the spindle bearing reservoirs 1 Raise the headstock cover then remove the oil plugs shown in Figure 78 gt NNNM 22254 5 Figure 78 Spindle bearing reservoir oil plugs G9249 12 x 37 Belt Drive Gap Bed Lathe 2 Fill both spindle bearing reservoirs with oil until the oil level in the sight glasses shows at least half way see Figure 79 ZN S Ger En 5 Figure 79 Spindle bearing reservoir oil sight glasses 3 Clean away any spilled oil replace the oil plugs and lower the headstock cover To change the spindle bearing oil 1 Start the spindle rotation and let it run for approximately 20 minutes to warm up the oil 2 Remove the oil plugs shown in Figure 78 3 Remove the oil sight glasses shown in Figure 79 then completely drain the spindle bearing oil reservoirs 4 Replace the oil sight glasses and re fill the reservoirs as instructed in the previous sub section 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 warranty 47 Headstock Change Gears Multi Purpose Every One Pump to 8 Hours Fittings of Operation Thin Coat to Gears Gear Grease Add one pump from a grease gun to the three headstock greas
17. sory was designed SECURE WORKPIECE Use clamps or a vise to hold the workpiece when practi cal A secured workpiece protects your hands and frees both hands to operate the machine DO NOT OVERREACH Maintain stability and balance at all times MANY MACHINES EJECT WORKPIECES TOWARD OPERATOR Know and avoid conditions that cause the workpiece to kickback ALWAYS LOCK MOBILE BASES IF USED BEFORE OPERATING MACHINERY CERTAIN DUST MAY BE HAZARDOUS to the respiratory systems of people and animals especially fine dust Be aware of the type of dust you are exposed to and always wear a respirator designed to filter that type of dust G9249 12 x 37 Belt Drive Gap Bed Lathe AWARNING Additional Safety Instructions for Metal aa UNDERSTANDING CONTROLS For effi cient and safe use of this machine make sure you understand the use and operation of all controls SAFETY ACCESSORIES To reduce the risk of injury from flying chips always keep the chuck guard in place over the spindle in addition to wearing safety glasses or a face shield when cutting TOOL SELECTION Tool breakage is a potential hazard to the operator and is an avoidable expense Always use the proper tooling for the operation Make sure the tooling is sharp and held firmly in place with the proper device CHUCK KEY The chuck key could cause serious personal injury if thrown from the spinning chuck Never leave the chuck key in the chuck
18. Lock Washers 12mm Lathe StandQ 6 Flat Washers 12mm Lathe Stand 6 Hex Nuts M12 1 75 Lathe StandQ 6 Phillips Head Screws M6 1 x 10 Center 12 Flat Washers 6mm Center Panel 12 Hex Nuts M6 1 Center Panel 6 E Center 1 1 G Tool BOX 1 American Rocker Type Tool Post 1 k 1 J Drill Chuck Arbor 16 1 Live Center 1 Spindle Sleeve MT23 MT3 5 1 M Dead Centers 2 Hex Wrench Set 3 4 5 6 8mm 1 Each 4 Way Tool Post 1 P Drill Chuck B16 amp 1 Q Outside Jaws for 3 Jaw Chuck 9 Standard Screwdriver 2 1 Figure 3 Box 1 inventory 9 Hande MERE 2 T Change Gears 30 32 46 1 Each U Open End Wrench 13 16mm 1 V 4 Jaw Chuck Es 1 W Faceplate 1 X Chuck 2 If any nonproprietary parts are missing e g a nut or a washer we will gladly replace them or f
19. Note 7he graduated dial has marks in 0 001 increments on the upper portion of the dial and marks in 0 02mm increments on the lower portion 21 Chuck amp Faceplate Mounting Removal The Model G9249 features a threaded 21 8 spindle with a taper Mounting and removal procedures for the chucks and faceplate are the same Before storing clean debris or built up grime from the chucks and faceplate then protect them with an application of products like Model H8257 Primrose Armor Plate with Moly D Machine and Way Oil see ACCESSORIES on Page 42 Removing a Chuck or Faceplate Tools Needed Qty Hex Wrench 2 1 Chuck 1 Dead Blow Hammer 1 Breaker Baf 1 Chuck 1 To remove a chuck or faceplate 1 DISCONNECT LATHE FROM POWER 2 Lay a chuck cradle see Figure 21 or a layer of plywood over the bedways to reduce the risk of injury and to protect the precision ground surfaces of the bedways Figure 21 Simple chuck cradle made from scrap lumber 22 3 Remove both spindle clamps from behind the chuck or faceplate see Figure 22 Figure 22 Spindle clamp 4 Move the feed direction lever up or down to engage the change gears and prevent spindle rotation see Figure 23 PINCH HAZARD Protect your hands and the precision ground bedwa
20. Way Ball Oilers Figure 87 Leadscrew and feed rod ball oilers 2 total 50 Figure 88 Tailstock ball oilers 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 warranty Back Gear Shaft Multi Purpose Gear Every Grease 40 Hours of Operation 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 Tensioning Replacing V Belts Adjusting Motor V Belt Tools Needed Qty Wrench 18MM 1 To adjust the motor V belt tension 1 DISCONNECT LATHE FROM POWER 2 Push the belt tensioning lever back to tension both belts see Figure 90 Tensioning Lever Figure 90 V belt tensioning lever 3 From the back of the lathe check the motor V belt deflection when moderate pressure is placed on the V belt mid way between the pulleys it should be approximately see Figure 91 Deflection Figure 91 Checking motor V belt tension G9249 12 x 37 Belt Drive Gap Bed Lathe 4 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 Figure 92 Motor V belt tensioning hex bolt and jam nuts 5 Re check the V belt deflection and when
21. back of the chuck or faceplate Note Make sure the spindle clamp tangs properly fit into the spindle groove before tightening the set screw see Figure 22 7 Remove the chuck cradle or plywood and any tools used before starting the lathe AWARNING Make sure the chuck or faceplate is firmly secure on the spindle and remove the chuck key Object thrown from the lathe could cause serious per sonal injury or death to the operator or bystand ers Mounting a Workpiece Typically a workpiece is mounted in a 3 jaw chuck a 4 jaw chuck a faceplate or between centers There are however numerous other methods of workpiece mounting for a lathe that are beyond the scope of this manual Whichever work holding device you use make sure that the workpiece is held firmly and centered to ensure safe and accurate operation Da Using 3 Jaw Chuck The 3 jaw scroll type chuck included with this lathe features hardened steel jaws that center the workpiece When the operator opens or closes the jaws with the chuck key the jaws move in unison here are two sets of jaws included with the 3 jaw chuck inside and outside jaws Use the correct jaws for the size and configuration of the workpiece to hold it firmly and securely on the chuck see Figure 25 for examples Clamping on an Outside Diameter F
22. chuck key clockwise until you see the tip of the scroll gear lead thread just begin to enter the jaw guide as shown in Figure 27 E i Figure 27 Installing jaw into the 3 jaw chuck 6 Position the jaw with the beveled edge point ing to the center of the chuck then insert the jaw into the jaw guide and hold it against the scroll gear lead thread 7T While firmly holding the jaw in place rotate the chuck key clockwise one turn to engage the jaw with the scroll gear threads Note Pull on the jaw to make sure it is engaged with the scroll gear 8 Repeat Steps 6 7 with the remaining jaws Jf installed correctly the three jaws will con verge together at the center of the chuck the jaws do not come together repeat this procedure until they do Using the 4 Jaw Chuck The 4 jaw chuck features independently adjust able hardened steel jaws to hold non cylindrical or off center workpieces Each jaw can be removed from the chuck body and reversed for a wide range of work holding versatility Tools Needed qaid 1 G9249 12 x 37 Belt Drive Gap Bed Lathe To mount a workpiece on the 4 jaw chuck 1 DISCONNECT LATHE FROM POWER 2 Use a piece of wood to protect the bedways 3 Use the chuck key to open each jaw until the workpiece can lie flat against the chuck face 4 With assistance to hold the workpiece in place tighten each jaw in small increments After adjusting the
23. example Am 2 Figure 37 Round stock mounted between Note As long as the fabricated dead center centers remains in the chuck the point of your center will remain true to the spindle axis or center 7 Turn approximately 0 010 off the diameter line Keep in mind that the point will have to be refinished whenever it is removed and re 8 Mount a dial indicator so the dial plunger is installed in the chuck on the tailstock barrel before making adjust ments P 9 Measure the stock with a micrometer lf the stock is fatter at the tailstock end move the tailstock toward the operator half aN the distance of the amount of taper see Figure 38 Move tailstock in half the distance of the taper Figure 36 Tailstock centering dead center con 5 Place the live center in the tailstock Figure 38 Tailstock adjustment toward the operator viewed from above G9249 12 x 37 Belt Drive Gap Bed Lathe o 29 the stock is thinner at the tailstock end move the tailstock away from the operator half the distance of the amount of taper see Figure 39 Move tailstock in half the distance of the taper Figure 39 Tailstock adjustment away from the operator viewed from above 10 Refer to Offsetting Tailstock on Page 28 for making adjustments to the tails
24. first jaw continue tight ening in opposing sequence as shown in Figure 28 until the workpiece is firmly secure in the desired position A 2 Figure 28 4 jaw tightening sequence 5 Make fine adjustments by using a test indica tor and adjusting the jaws until the workpiece is precisely aligned see Figure 29 Fo po B p 2 7 A A y Figure 29 Example of using a test indicator to align a workpiece in a 4 jaw chuck 25 9 AWARNING 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 or property damage Using the Faceplate The faceplate can be used to turn non cylindrical parts or for off center turning by clamping the workpiece to it To mount a workpiece on the faceplate 1 DISCONNECT LATHE FROM POWER 2 Use a piece of wood to protect the bedways 3 Secure the workpiece on the faceplate with a minimum of three independent clamping devices see Figure 30 for an example Note Jake into account the rotation and cutting forces that will be applied to the workpiece when clamping it to the faceplate Faceplate m Figure 30 Example of a non cylindrical workpiece mounted on the faceplate 26 Centers The Model G9249 includes one liv
25. for repairing or replacing the brass tips To order replacement tips call Grizzly at 1 800 523 4777 and order the appropriate part number indicated above To remove install the rest fingers 1 Loosen the jam nut and set screw shown in Figure 106 Jam Nut amp Set Screw Adjustment lt Knob w 4 4 m Figure 106 st fingers and tips 2 Hold the finger with one hand then rotate the adjustment knob until the finger is free of the rest G9249 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 To remove install the brass tips 1 2 9 Protect the finger and secure it in a vise Place a punch through the top end of the fin ger then use a hammer to tap the brass tip loose from the finger To re install the brass tip turn the finger upside down in the vise position the brass tip over the hole then use a dead blow hammer to tap the tip in place 61 Adjusting Half Nut The half nut should engage the leadscrew firmly without tilting from side to side during operation With normal wear over an extended period of use of the half nut adjustment of the half nut guide bar may be necessary The goal of adjusting the half nut guide bar is remove excessive play so that th
26. from lead based paints Crystalline silica from bricks cement and other masonry products e Arsenic and chromium from chemically treated lumber Your risk from these exposures varies depending on how often you do this type of work To reduce your exposure to these chemicals Work in a well ventilated area and work with approved safety equip ment such as those dust masks that are specially designed to filter out microscopic particles Table of Contents INTHODUGCTIODL cce 2 SECTION 5 ACCESSORIES 42 Pieds 2 SECTION 6 MAINTENANCE 46 ontact 21 2 2 Schedule 46 Identification METTE EE Oo 3 leaning b vM A Lubrication 47 Tensioning Replacing V Belts 51 SECTION 1 7 Safety Instructions for Machinery 7 cbe Additional Safety Instructions 9 222 for DV AE fud 9 Tailstock 57 SECTION 2 CIRCUIT REQUIREMENTS 10 Cross Slide Backlash 57 220V 10 58 SECTION 3
27. pin 3 Pull the back gear lever forward to engage the back gears with the spindle gears 711 17 Spindle in 3 Position Tensioning Note t may be necessary to jog the spindle E Lever by hand to properly mesh the gears Figure 50 V belt positions To disengage the back gears 4 Close the headstock cover then re tension 1 DISCONNECT LATHE FROM POWER the V belts by pushing the belt tensioning lever all the way back 2 Push the back gear lever back to disengage the back gears from the spindle gears AWARNING 3 Rotate the lock pin 90 then rotate the Always use the correct spindle speed and spindle gear until the lock pins slips into the feed rate for your lathe operation to avoid indent on the pulley the risk of injury to yourself or others from ejected workpieces or broken tools 4 Move the spindle back and forth by hand to make sure the lock pin is securely seated in the pulley G9249 12 x 37 Belt Drive Gap Bed Lathe o 35 3 Make sure the half nut is disengaged from Power Feed the leadscrew by moving the half nut lever up The rotating feed rod provides powered move 4 Move the feed rod leadscrew lever to the left ment of the carriage or the cross slide The car for feed rod rotation riage moves left or right along the spindle center line and the cross slide moves in or out across 5 Use the spindle direction lever to start the the spindle center line spindle
28. power OFF and allow all moving parts to come to a complete stop before leaving machine unattended DO NOT USE IN DANGEROUS ENVIRONMENTS DO NOT use machin ery in damp wet locations or where any flammable or noxious fumes may exist KEEP WORK AREA CLEAN AND WELL LIGHTED Clutter and dark shadows may cause accidents USE A GROUNDED EXTENSION CORD RATED FOR THE MACHINE AMPERAGE Grounded cords minimize shock hazards Undersized cords create excessive heat Always replace damaged extension cords ALWAYS DISCONNECT FROM POWER SOURCE BEFORE SERVICING MACHINERY Make sure switch is in OFF position before reconnecting MAINTAIN MACHINERY WITH CARE Keep blades sharp and clean for best and safest performance Follow instructions for lubricating and changing accessories MAKE SURE GUARDS ARE IN PLACE AND WORK CORRECTLY BEFORE USING MACHINERY 18 19 20 21 22 23 24 25 WRENCHES Make a habit of checking for keys and adjusting wrenches before turn ing machinery ON CHECK FOR DAMAGED PARTS BEFORE USING MACHINERY Check for binding or misaligned parts broken parts loose bolts and any other conditions that may impair machine operation Repair or replace damaged parts before operation USE RECOMMENDED ACCESSORIES Refer to the instruction manual for recom mended accessories Improper accesso ries increase risk of injury DO NOT FORCE MACHINERY Work at the speed for which the machine or acces
29. suf 4 29 40117117 0 00 focation hazards for children CLEANER and animals 110 rea Kerr Figure 6 Cleaner degreaser available from Grizzly G9249 12 x 37 Belt Drive Gap Bed Lathe o 13 Site Considerations Floor Load Refer to the Machine Data Sheet on Page 4 for the weight and footprint specifications of your machine Some residential floors may require additional reinforcement to support both the machine and operator Placement Location Consider existing and anticipated needs size of material to be processed through each machine and space for auxiliary stands work tables or other machinery when establishing a location for your new machine See Figure 7 for the minimum working clearances A CAUTION 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 14 9 Lathe Assembly amp Placement AWARNING The Model G9249 is a heavy machine Serious personal injury may occur if safe moving methods are not used Get assistance and use power equipment rated for at least 1500 Ibs to move the ship ping crate and remove the machine from the crate To assemble and move the lathe 1 Place the cabinets at the prepared site for the lathe 2 Attach the center panel brackets to the inside of the cabinets with six M6 1 x Phillips he
30. 0 546 9663 for assistance SHOCK HAZARD Disconnect power from the machine before servicing electrical com ponents Touching electrified parts will result in personal injury including but not limited to severe burns electrocution or death GROUNDED CIRCUIT Electrocution or fire could result if the machine is not grounded and installed in compliance with electrical codes Compliance MUST be verified by a qualified electrician WIRE COLOR KEY Black Red Ylw Grn GE White v Green Yellow Brown G9249 12 x 37 Belt Drive Gap Bed Lathe 4 CIRCUIT REQUIREMENTS You MUST fol low the CIRCUIT REQUIREMENTS section on Page 10 If you are unsure about the wiring codes in your area or you plan to connect your machine to a shared cuit consult a qualified electrician MOTOR WIRING The motor wiring shown in these diagrams are current at the time of printing but it may not match your machine Always use the wiring diagram inside the motor junction box EXPERIENCING DIFFICULTIES If at any time you are experiencing difficulties under standing the information included in this section contact our Technical Support at 570 546 9663 SHOCK HAZARD Disconnect power before working on 1 wiring 9 63 Wiring Overview Figure 109 Electrical cabinet wiring diagram on Page 65
31. 00 P9249800 COMPLETE FOLLOW REST 806 P9249806 CLAMPING BLOCK 801 P9249801 STAR HANDLE 8 1 25 X 30 807 PSSOSM SET SCREW M6 1X8 802 PRPO2M ROLL PIN 3 X 16 808 PSS11M SET SCREW M6 1 X 16 803 P9249803 COLLAR 809 PNO1M HEX NUT M6 1 804 P9249704 ADJUSTING SCREW 8 X 40 810 PSB40M CAP SCREW 8 1 25 X 35 805 P9249805 BUSHING 811 P9249811 FOLLOW REST BASE G9249 12 x 37 Belt Drive Gap Bed Lathe o 81 82 Electrical Cabinet o G9249 12 x 37 Belt Drive Gap Bed Lathe REF 904 905 908 911 912 917 919 920 921 924 925 925 1 926 927 928 929 G9249 12 x 37 Belt Drive Gap Bed Lathe Electrical Cabinet Parts List PART DESCRIPTION P9249904 CHIP GUARD SAFETY SWITCH CABLE REF PART DESCRIPTION 930 9249930 STRAIN RELIEF 3 4 93 933 934 935 936 937 998 99 940 942 943 944 945 9 83 REF 1001 1002 1003 1004 1005 1006 1007 1008 1009 84 Cabinet Stand OOc OOc 0 PART DESCRIPTION P92491001 CABINET LEFT REF 1010 1011 1012 1013 1013 1 1014 1015 1016 1016 1012 1014 PART DESCRIPTION PB33M HEX BOLT M12 1 75 X 50 P92491011 P92491013 1 P92491014 CABINET DOOR RIGHT P92491015 PAN RUBBER GASKET LEFT P92491016 PAN RUBBER GASKET RIGHT G9249 12 x 37 Belt Drive Gap Bed Lathe 159 159 1 160 2 162 501 1100 1102 1103 1104 1105 1106 1107 1108 DES
32. CRIPTION P9249159 4 JAW CHUCK 8 G9249 12 x 37 Belt Drive Gap Bed Lathe REF 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 9 162 PART DESCRIPTION PAWOSM HEX WRENCH 3MM 85 Label Placement 167 172 168 166 21222 tut 164 165 173 REF PART DESCRIPTION REF PART DESCRIPTION 164 1 9249164 169 P9249169 CHANGE GEAR LABEL 165 170 166 171 167 172 168 173 AWARNING Safety labels warn about machine hazards and ways to prevent injury The owner of this machine 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 o G9249 12 x 37 Belt Drive Gap Bed Lathe CUT ALONG DOTTED LINE Grizzly NARRANTY CARD Industrial Inc Name Street City State Zip Phone Email Invoice Model Order Serial The following information is given on a voluntary basis It will be used for marketing purposes to help us develop better products and services Of course all information is strictly confidential 1 How did you learn about us Advertisement Friend Catalog Card Deck Website Other 2 Which of the following magazines do you subscribe to Cabinet Maker Popular Mechanics Today s Homeowner Famil
33. FROM POWER 2 Torelease the taper pins from the gap slowly tighten the taper pin hex nuts see Figure 100 then remove the pins Figure 100 Gap taper pins screws 3 Remove the four cap screws 4 Tap the outside of the gap with a dead blow hammer to loosen it then remove the gap from the lathe 58 Spindle Bearing Preload 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 Adjusting the spindle bearing preload requires using a spanner wrench or a punch and hammer You can either purchase the spanner wrench at a tool store or fabricate one using the diagram shown in Figure 101 i 11 4 3 32 Fabricate from CRS or HRS stock Figure 101 Spanner wrench dimensions NOTICE To fully understand the process of preload ing the spindle bearings read this entire subsection before performing any of the steps Tools Needed Qty Hex Wrench DITIUL e oeste leni TRU dus 1 Hex Wrench mH 1 Spanner Wrench or Hammer and Punch 1 Test Indicator 1 Small Sledge or Heavy Dead Blow Hammer 1 Wooden 1 To adjust the spindle bearing preload 1 Runthe lathe for 20 minutes on a high speed to bring the lathe to a no
34. LT DRIVE GAP BED LATHE Product Dimensions icio m 1136 Ibs Wes buda Tr tem X 64 x 27 x 49 in gedauert ieu M m 57 x 14 in Shipping Dimensions Carton 71 Ju Wood Crate Gy M Machine 1 e 1024 108 ie ag od NERO 71x29x29in Carton 2 Cardboard E m T meret Left Stand i e fem 76 Ibs LONO NETS DO IS Dmm 27 18x 14 in Carton 3 De e Rn Cardboard e n Right Stand c 58 Ibs Lengd REIGN T 27 15 11 in Electrical ro P Magnetic Switch with Thermal Overload Protection Y ONA 220 Recommended 20550581
35. SCREW 6 1 X 16 G9249 12 x 37 Belt Drive Gap Bed Lathe o 79 Steady Rest L 109 705 700 n2 704 gt pati gt 703 713 gt 701 0 714 709 0 708 62 710 y 99 9 pie v Be 708 702 716 2 707 amp lt 7 lt gt d NES 718 lt gt 55 719 O wy REF PART DESCRIPTION REF PART DESCRIPTION 700 9249700 COMPLETE STEADY REST 710 HEX BOLT 6 1 X 25 701 9249701 STAR HANDLE M8 1 25 X 30 711 STEADY REST COVER 702 2 ROLL PIN 3 X 16 712 KNOB 703 9249703 COLLAR 713 9249713 LEVER 704 9249704 ADJUSTING SCREW M8 1 25 X 40 714 ROLL PIN 5 X 30 705 9249705 BUSHING 715 STEADY REST BASE 706 9249706 CLAMPING BLOCK 716 09 12 1 75 707 5511 SET SCREW 6 1 X 16 717 PWO6M FLAT WASHER 12MM 708 HEX NUT M6 1 718 9249718 CLAMP PLATE 709 PSSO3M SET SCREW M6 1 X 8 719 140 HEX BOLT M12 1 75 X 70 80 G9249 12 x 37 Belt Drive Gap Bed Lathe 9 Follow Rest 806 800 805 804 2 803 807 N 0 809 6 808 C 807 808 809 802 811 810 5 DESCRIPTION REF PART DESCRIPTION 8
36. SPINDLE SPEED Select the correct speed for the type of work material and tooling Allow the lathe to reach full speed before beginning the cut Turn the lathe OFF and allow the spindle to come to a com plete stop by itself before changing gears speeds or direction NEVER attempt to slow the spindle with your hands or a tool CHANGING CHUCKS Lathe chucks are heavy and awkward to handle and a falling chuck can cause serious injury and proper ty damage Get assistance and protect the bedway with a board or chuck cradle when removing or installing chucks LATHE WORKING CONDITIONS Protect yourself and your investment maintain your lathe in proper working condition Never operate the lathe with damaged or worn parts Perform routine inspections and maintenance promptly when scheduled or as needed G9249 12 x 37 Belt Drive Gap Bed Lathe 9 10 11 12 13 14 15 MOUNTING WORKPIECE Make sure the workpiece is properly mounted before starting the lathe A workpiece thrown from the machine may severely injure you or a bystander SAFETY CLEARANCES Make sure the workpiece has adequate clearance on all sides before starting machine Check clear ances for the tooling and tool holders and all parts of the carriage before starting the lathe LEAVING LATHE Always turn the lathe OFF before leaving it unattended An unsu pervised lathe that is running invites acci dents SUPPORT LONG STOCK Unsupported
37. THE FROM POWER 2 Loosen the rear gib adjustment screw a small amount then tighten the front gib adjust ment screw the same amount see Figures 96 97 Compound Slide Rear Gib Adjustment Cross Slide Rear Gib Adjustment Screw Figure 96 Cross and compound slide rear gib adjustment screws are S C s Figure 97 Cross and compound slide front gib adjustment screws Cross Slide Front Gib Adjustment Screw 4 G9249 12 x 37 Drive Gap Bed Lathe 3 Use handwheels to test the slide move ment and repeat Step 2 if necessary Note Adjust gib pressure until you feel a slight drag in the movement of the slide Tailstock Lock When pushed toward the spindle the tailstock lock holds the tailstock firmly in place on the bedway with a locking plate underneath the tailstock Tools Needed Qty Wrench 18MM 1 To adjust the tailstock lock 1 Move the tailstock lock down then position the tailstock to an area on the bedway that will allow access to the locking hex nut and plate underneath the tailstock see Figure 98 e p o Locking Hex Nut amp Plate Figure 98 Tailstock locking hex nut and plate 2 Tighten the locking hex nut a 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 ha
38. ad screws and flat washers as shown in Figure 8 Center Panel Figure 8 Center panel brackets installed 3 Stand the cabinets upright then attach the center panel to the brackets with the remain ing M6 1 x 10 Phillips head screws flat wash ers and M6 1 hex nuts G9249 12 x 37 Belt Drive Gap Bed Lathe 4 Position the chip top of the cabinet stand Line up the holes in the pan with the holes in the cabinets see Figure 9 Figure 9 Chip pan in the correct position 5 Position the rubber gaskets on the chip pan so that the holes line up with those in the pan Note We recommend using a silicone RTV sealant between the gaskets and the chip pan to avoid leaking lubricants and coolants into the cabinets 6 Loosenthe carriage lock bolt shown in Figure 10 then move the carriage to the far right of the bedway to balance the weight evenly along the length of the lathe 4 y p a 4 4 Carriage Lock Bolt AWARNING Only use lifting straps and power lifting equipment rated for at least 1500 Ibs and in good working condition 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 Figure 11 Lifting the lathe on the cabin
39. age 66 5 Spindle Switch Page 64 You MUST read and understand the Electrical Safety Instructions on Page 63 Ber G9249 12 x 37 Belt Drive Gap Bed Lathe Control Panel amp Motor Wiring Diagrams Control Panel Emergence Stop Button Motor Start Button To Electrical Box Page 65 omen Figure 113 Control panel wiring Motor 2HP 220V 60Hz Single Phase Run Capacitor INGLE PHASE DOUBLE 2 34 20 400 ACITION YL90L 4 INS E 7 Ta o Start Capacitor 200MFD 250VAC Figure 114 Motor wiring To Electrical Box Page 65 66 You MUST read and understand the 799 Electrical Safety Instructions on 63 o G9249 12 x 37 Belt Drive Gap Bed Lathe REF PART G9249 12 x 37 Belt Drive Gap Bed Lathe SECTION 9 PARTS Bed DESCRIPTION P9249001 ROD END CAP REF PART DESCRIPTION 17 P9249017 LEADSCREW BUSHING 18 19 20 21 22 23 24 25 26 27 28 29 30 163 9 67 Headstock 160 OD OOD gt ODN 6 t LO C 2 12 d 7 7777 Q 94 161 1
40. aw chuck is firmly mounted on the spindle Check the clamps on the back of the chuck as shown in Figure 15 refer to Chuck amp Faceplate Mounting Removal on Page 22 for detailed instructions Figure 15 Spindle clamp Make sure all tools and objects used during setup are cleared away from the machine Move the feed rod leadscrew lever to the neutral center position see Figure 16 This will prevent the carriage from moving during testing Feed Rod Leadscrew A r4 Moe Figure 16 Feed rod leadscrew lever in center neutral position 17 Connect the machine to power source Push the emergency stop button in then twist it clockwise so it pops out When the emer stop button pops out the switch is reset and ready for operation see Figure 17 Emergency Stop Button Figure 17 Resetting the emergency stop button 8 10 18 Stand to the side of the spindle then start the spindle and verify that the machine is oper ating correctly by pulling up on the spindle direction lever the spindle should rotate counterclockwise When operating correctly the machine runs smoothly with little or no vibration or rubbing noises Investigate and correct strange or unusual noises or vibrations before operating the machine further Always disconnect the machine from power when investigating or correcting potential problems Press the emergency stop butt
41. ble Insert Five piece turning tool set features indexable car bide inserts with spline type hold down screw that allow indexing without removing the screw Each set includes AR AL BR BL and E style tools with carbide inserts hex wrench extra hold down screws and a wooden case Figure 69 G5640 5 Pc Indexable Tool Set 43 H2972 Cut Holder with Blade 4268 4 32 x Ys x 5 Replacement Blade Small enough to fit most 4 way turret tool posts but rugged enough to handle the job this cut off tool holder is a must Comes with a wrench and cut off tool bit Uses s2 5 x 5 tool bits Shank measures 72 x 14 x Figure 70 H2972 Cut Off Holder with Blade H2996 Double Ended Boring Bar This is a well made boring bar and holder The boring bar holds the tool bit at 90 at one end and 45 at the other Comes with a wrench and tool bit Bar size is x 47 holder is 214 x 75 uses Ys tool bits Figure 71 H2996 Double Ended Boring Bar y VO 44 H5936 2 Pc Knurling Tool Set This 2 piece set includes a x 4 Single Knurling Toolholder and 2 x 4 Double Knurling Toolholder with Pivoting Head Both have a black oxide finish Figure 72 H5936 2 Pc Knurling Tool Set H2987 Bent Lathe Dog H2988 1 Bent Lathe Dog H2989 17 Bent Lathe Dog H2990 2 Bent Lathe Dog H2991 3 Bent Lathe Dog Just the thing for precision machining betw
42. c tion by engaging the half nut lever shown in Figure 58 40 m Once you are confident the settings are cor rect disengage the half nut and turn OFF the spindle 7T Examine the thread dial chart see Figure 59 to determine which numbers on the thread dial will engage the half nut Note maintain accuracy and consis tency engage the half nut on the same mark on each pass Failure to start on the same number each time may lead to cutting off the thread made in the previous pass INDICATOR TABLE SCALE T P 4 1 24 1 8 1 26 13 4 55 1 33 1 1 4 _ 6 103 36 1 4 6 5 1 38 13 8 8 1 8 44 1 4 9 1 46 103 95 8 10 1or3 wp 1 56 odis oj 6c 14 72 i 76 80 96 104 BA 1 or 12 1 4 13 1 14 3 16 1 8 18 1013 1911 220 1 4 10 11 1 12 13 14 16 18 19 20 22 1 1 4 104 22 112 1 LEAD SCREW PITCH 8 T P I Figure 59 Thread dial table 2 G9249 12 x 37 Drive Gap Bed Lathe 8 The thread dial is unnecessary for cutting metric threads Leave the half nut engaged METRIC THREAD TABLE until the threads are complete 127 401 9 Setthe tool tip perpendicular to the workpiece ON center it vertically a
43. centered position is indicated on the offset scale Aligning Tailstock The tailstock is aligned with the headstock at the factory We recommend that you take the time to ensure that the tailstock is aligned to your own desired tolerances To align the tailstock with the headstock 1 Using an machinists precision level on the bedways make sure the lathe is level side to side and front to back If the lathe is not level correct this condition before proceeding refer to Assembly and Placement on Page 14 for detailed instructions 2 Get two pieces of steel round stock 2 in diameter by 6 long G9249 12 x 37 Belt Drive Gap Bed Lathe 3 Center drill both ends of one piece of the 6 Attach a lathe dog to the bar stock from Step round stock and set it aside for use in 3 and mount it between the centers see Step 6 Figure 37 Note f the tailstock is slightly out of align ment by a few thousands of an inch the iy center drill will find the center point during the driling process If the tailstock appears Dead Center D grossly out of alignment move the tailstock Lathe Dog NI until it appears to be near or at center refer to Cutting Tapers Using the Tailstock on 28 qQ OW 4 Using the other piece of round stock make a dead center by turning a shoulder to make a shank then flip the piece over in the chuck and turn a 60 point see Figure 36 for an
44. customized in minutes to any size just add or remove sections to fit your needs Carry a Power Twist V Belt in your vehicle for a fix any where solution to broken fan belts G9249 12 x 37 Belt Drive Gap Bed Lathe SECTION 7 SERVICE the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel ops If you need replacement parts or you are unsure of your repair skills then feel free to call our Technical Support at 570 546 9663 Troubleshooting Motor amp Electrical Machine does not start or a breaker trips Machine has vibration or noisy operation G9249 12 x 37 Belt Drive Gap Bed Lathe Emergency stop button is engaged or is at fault Change gear door headstock cover or chuck guard open tripping safety switch Plug or receptacle is at fault or wired incorrectly Start capacitor is at fault Contactor not getting energized or has burnt contacts Wall fuse or circuit breaker is blown or tripped Motor connection is wired incorrectly Power supply is at fault or is switched OFF Motor ON button is at fault Centrifugal switch is at fault Spindle switch is at fault Cable or wiring is open or has high resistance Motor is at fault Motor or component is loose V belt s worn damaged or loose Motor fan is rubbing on fan cover Pulley set screws or keys are missing or loose Machine is incorrectly mo
45. e center and two dead centers see Figure 31 The supplied MT 5 MT 8 spindle sleeve fits into the spindle taper to hold an center or tool Dead Centers Figure 31 Centers and spindle sleeve The live center tip will rotate independently of the spindle or quill The dead centers will spin with the spindle and remain stationary when used in the quill Use these devices as required by your operation The steps to install and remove a center into the tailstock quill are detailed in the previous Tailstock subsection on Page 27 Installing a Sleeve and Center into the Spindle 1 Clean away any grime or oily substance from the tapered mating surfaces of the sleeve and center 2 Install the center into the spindle sleeve then seat the assembly into the spindle G9249 12 x 37 Belt Drive Gap Bed Lathe 3 Mount the faceplace to the spindle see Figure 32 Note When using a dead center in the spin dle use a lathe dog so that your workpiece Will rotate with the spindle and not spin on the dead center tip Dead Center Figure 32 Dead center and faceplate installed on the spindle NOTICE To avoid premature wear of the dead center or damage to the workpiece always keep the dead center tip well lubricated Removing a Sleeve and Center from the Spindle 1 With assistance hold a piece of wood up against the center to keep it from falling out of the spindle during the next steps
46. e fittings shown in Figure 80 Use a brush to apply a thin coat of grease to the gear teeth AAA AAA Figure 80 Headstock grease fittings Headstock Idler Pulley Shaft Frequency Multi Purpose Gear Grease Every 8 Hours One of Operation Pump Add one pump from a grease gun to the idler pul ley grease fitting shown in Figure 81 Back w Spindle 3 Z oe we gt 9 Gears f Gears DIO NN 4 Spindle Pulley Shaft Set Screw ub Figure 81 Headstock pulley shaft lubrication 3 points Ww Idler Pulley Shaft Ke Grease Fitting 48 Headstock Gears Multi Purpose Gear Every 8 Hours of Operation Grease Use a brush to apply a thin coat of grease to the gear teeth of the spindle and back gears see Figure 81 Headstock Spindle Pulley Shaft ISO 68 SAE 20W Every Dd Bearing and Gear 8 Hours Lubricant of Operation Hemove the spindle pulley shaft set screw shown in Figure 81 add 2 3 drops of lubricant then re install the set screw Feed Rate Gearbox Oil ISO 68 SAE 20W Every 2 3 Bearing and Gear 8 Hours Lubricant of Operation Remove the oil plugs on either side of the control panel see Figure 82 add 2 3 drops of lubricant then replace the oil plugs DN po Foi Pius SE 233 gt mi A ST 5 DIRECT 3 320 a BACK GEAR 7
47. e half nut eas ily and firmly engages the leadscrew but will not tilt from side to side when the carriage is moved back and forth Tools Needed Qty Hex Wrench 3 1 Hex Wrench 5 1 To adjust the half nut guide bar 1 DISCONNECT LATHE FROM POWER 2 Unscrew the cap screw shown in Figure 107 and remove the thread dial assembly 4 Half Nut Lever Figure 107 Thread dial and cap screw 62 3 Loosen the two set screws shown in Figure 108 one full turn Figure 108 Half nut guide bar set screws 4 Use the half nut lever to engage the half nut with the leadscrew then rotate the carriage handwheel back and forth Note During this step observe how the half nut tilts from side to side on the leadscrew 5 Evenly tighten the set screws until a slight resistance is felt 6 Repeat Steps 4 5 until the set screws are just snug DO NOT overtighten them 7 Re install the thread dial G9249 12 x 37 Belt Drive Gap Bed Lathe SECTION 8 WIRING AWARNING Electrical Safety Instructions PRINTED INFORMATION The electrical information included in this section is current at the time of printing However in the spirit of improvement we may make changes to the electrical system of future machines Study the photos and diagrams in this section carefully If you notice differences between your machine and these diagrams call Technical Support at 57
48. een 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 G1070 MT3 Live Center Set A super blend of quality and convenience this live center set offers seven interchangeable tips High quality needle bearings prolong tool life and special tool steel body and tips are precision ground Supplied in wooden box Figure 74 G1070 Live Center Set G9256 6 Dial Caliper G9257 8 Dial Caliper G9258 12 Dial Caliper These traditional dial calipers are accurate to 0 001 and can measure outside surfaces inside surfaces and heights depths Features stainless steel shock resistant construction and a dust proof display An absolute treat for the perfection ist Figure 75 Grizzly Dial Calipers 1 2010 0229 017771 110 19249 12 37 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 The dial indicator features 0 1 travel and has a resolution of 0 001 This fine set includes a molded case for protection and convenience Figure 76 G9849 Magnetic Base Dial Indicator Combo H6879 Lathe Operation amp Maintenance Book This detailed metal lathe book provides extensive coverage of a wide variety of metalworki
49. et stand assembly With assistance carefully lift the lathe over the cabinet stand and align the mounting holes in the lathe base with the holes in the chip pan Secure the lathe to the cabinet stand with the six M12 175 x 50 hex bolts lock washers flat washers and M12 1 75 hex nuts Note Reach into the cabinets to install the lock washers flat washers and hex nuts Install the handles on the cross slide and car riage handwheels as shown in Figure 12 Figure 12 Handwheel handles installed A5 11 Review the information in the following sub section Mounting to Shop Floor and select a mounting method 12 To ensure accurate results from your lathe use a machinist s precision level to make the lathe bedway exactly level from side to side and from front to back If necessary use shims between the cabinets and floor Note He check the bedway after 24 hours after two weeks then annually to make sure it remains level Mounting to Shop Floor Although not required we recommend that you mount your new machine to the floor Because this is an optional step and floor materials may vary floor mounting hardware is not included Generally you can either bolt your machine to the floor or mount it on machine mounts Both options are described below Whichever option you choose it is necessary to level your machine with a precision level Bolting to Concrete Floors Lag shield anchors with lag bol
50. gears G9249 12 x 37 Belt Drive Gap Bed Lathe 7 Select the replacement gears as directed by the feed rate or threading chart see Figure 56 for an example of positioning Figure 56 Change gear configuration example 8 With the flange of the gear pointing away from the headstock see Figure 57 align the keyway of the top change gear with the shaft key then completely seat the gear on the shaft Secure it in place with the flat washer and hex nut DO NOT overtighten Mount the bottom change gear in a similar manner as the top change gear and secure itin place with the flat washer and cap screw However you must choose the correct orien tation of the gear flange f the bottom change gear will engage the 127T larger middle change gear point the gear flange away from the headstock f the bottom change gear will engage the 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 9 NOTICE For smooth operation and to reduce wear of the change gears always make sure to clean away debris and built up grime then apply a light film of multi purpose gear grease to the gear teeth 10 Swing the pivot bracket up to mesh the 11 12 middle change gears with the top and bottom change gears Note t may be necessary to re position the middle change gears on the pivot bracket to properly mesh wi
51. 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 SECTION 3 SETUP Setup Safety AWARNING This machine presents serious injury hazards to untrained users Read through this entire manu al to become familiar with the controls and opera tions before starting the machine AWARNING Wear safety glasses dur ing the entire setup pro cess AWARNING The Model G9249 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 to move the shipping crate and remove the lathe from the crate AWARNING Like all machinery there is potential danger when operating this machine Accidents are frequently caused by lack of familiarity or failure to pay attention Use this machine with respect and caution to lessen the pos sibility of operator injury If normal safety precautions are overlooked or ignored seri ous personal injury may occur G9249 12 x 37 Belt Drive Gap Bed Lathe 9 Items Needed for Setup The following items are needed to complete the setup process but are not included with your machine Description Qty Machinist s Precision Level 1 At Least 2 e Safety Glasses 1 for Each Person e Lifting Stra
52. heel counterclockwise until the tool is pushed out 27 Offsetting Tailstock The tailstock can be positioned offset from the spindle or moved side to side from the spindle center line This tailstock feature is most often used when cutting a taper When the tailstock is positioned toward the operator from the center line the machined workpiece end nearest the tailstock will be smaller in diameter than the end near the spindle Conversely position the tailstock away from the operator across the center line to machine a workpiece taper near the spindle Note When using tailstock offset to cut tapers you must use a center faceplate and lathe dog to mount the workpiece onto the spindle Tools Needed Qty Standard 1 To set up the tailstock to cut a shallow taper 1 Lock the tailstock in place then loosen the lock screw at the rear of the tailstock shown in Figure 34 Adjustment Screw Offset Scale J A f Figure 34 Tailstock offset controls 28 2 Alternately loosen and tighten the adjustment screws on either side of the tailstock until the desired offset is indicated on the offset scale see Figures 34 and 35 Figure 35 The effects of using the tailstock adjustment screws 3 Re tighten the lock screw to secure the off set Note 7o return the tailstock to the center line repeat the process until the
53. hinnest oil film pos sible while effectively providing needed lubrication and rust corrosion protection Adhesive cohesive components are added for vertical surfaces Resists squeeze out running dripping and non gumming This is good stuff use it on my lathes at home S Balolia President Plate wi achin ae t ang ly D AGMA 2E n Oil 555 1504 Compa on D NY INC Figure 63 Primrose Armor Plate Lubricant 42 T10069 Quick Change Collet Set MT3 8 Pc T10070 Quick Change Collet Set MT3 16 Pc These high quality collet sets are made modern Taiwanese factory using German CNC machines They are the best sets we have carried and can be used in production shops for precision work Switch out end mills the easy way just attach the quick change collet chuck to your lathe and slip your end mill into the appropriate collet Spring collets are hardened and ground for maxi mum holding power and ultra precision 8 pc set includes quick change collet chuck 5 98 10 Ys and 1 collets spanner wrench and moulded plastic case 16 pc set includes quick change collet chuck V4 A6 98 Ya Ae Ae 34 1916 16 and 1 collets spanner wrench and moulded plastic case Figure 64 Quick Change Collet Sets H3022 Measurement Tool Set Includes magnetic base 1 dial indicator 001 and 6 dial calipe
54. igure 25 Example of using the 3 jaw chuck Tools Needed Qty Sud 1 To mount a workpiece in the 3 jaw chuck 1 DISCONNECT LATHE FROM POWER 2 Use the chuck key to open the jaws until the workpiece sits flat against the chuck face and jaw step or fits in the chuck hole 3 Close the jaws until they just make contact with the workpiece 24 23 w Figure 26 Example of workpiece firmly held in Turn the chuck by hand to make sure the workpiece makes even contact with all three jaws and is centered as shown in Figure 26 the workpiece is not centered loosen jaws and adjust the workpiece Ilf the workpiece is centered fully tighten the jaws the center of the 3 jaw chuck Tools Needed Qty E OY 1 To remove and install the jaws 1 2 DISCONNECT LATHE FROM POWER Use a piece of wood to protect the bedways Insert and turn the chuck key counterclock wise and back the jaws all the way out Note f this is the first time you are removing the jaws mark each jaw and its jaw guide with a numbers 1 3 Returning the jaws to the same jaw guide on the chuck will make installation easier 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 5 Rotate the
55. inery READ THE ENTIRE MANUAL BEFORE 4 ALWAYS USE HEARING PROTECTION 3 STARTING MACHINERY Machinery pres ents serious injury hazards to untrained users ALWAYS USE ANSI APPROVED SAFETY GLASSES WHEN OPERATING MACHINERY Everyday eyeglasses only have impact resistant lenses they are NOT safety glasses ALWAYS WEAR A NIOSH APPROVED RESPIRATOR WHEN OPERATING MACHINERY THAT PRODUCES DUST Most types of dust wood metal etc can Cause severe respiratory illnesses G9249 12 x 37 Belt Drive Gap Bed Lathe 9 WHEN OPERATING MACHINERY Machinery noise can cause permanent hearing loss WEAR PROPER APPAREL DO NOT wear loose clothing gloves neckties rings or jewelry that can catch in moving parts Wear protective hair covering to contain long hair and wear non slip footwear NEVER OPERATE MACHINERY WHEN TIRED OR UNDER THE INFLUENCE OF DRUGS OR ALCOHOL Be mentally alert at all times when running machinery 10 11 12 13 14 15 16 AWARNING Safety Instructions for Machinery 17 REMOVE ADJUSTING KEYS AND ONLY ALLOW TRAINED AND PROP ERLY SUPERVISED PERSONNEL TO OPERATE MACHINERY Make sure operation instructions are safe and clearly understood KEEP CHILDREN AND VISITORS AWAY Keep all children and visitors a safe dis tance from the work area MAKE WORKSHOP CHILDPROOF Use padlocks master switches and remove start switch keys NEVER LEAVE WHEN MACHINE 15 RUNNING Turn
56. ing tool is dull 4 Sharpen replace 5 Incorrect spindle speed or feed rate 5 Adjust for proper spindle speed and feed rate Page 34 Cross compound 1 Too much play in gibs 1 Adjust gibs Page 56 slide or carriage 2 Handwheel s loose 2 Tighten handwheel fasteners feed has sloppy 3 Too much leadscrew backlash cross slide 3 Adjust leadscrew backlash Page 57 operation only 4 Leadscrew mechanism worn or out of 4 Tighten any loose fasteners on _ leadscrew adjustment mechanisms check for excessive wear replace if necessary Cross compound 1 Gibs are loaded up with chips grime 1 Remove gibs clean ways lubricate and properly slide or carriage adjust gibs Page 56 feed hard to move 5 Gibs are too tight 2 Adjust gibs Page 56 3 Leadscrew backlash setting too tight cross 3 Properly adjust cross slide leadscrew backlash slide only Page 57 4 Bedways are dirty dry 4 Clean and lubricate bedways 5 Gearing is at fault 5 Inspect replace gearing Inaccurate turning 1 Tailstock not properly aligned with 1 Properly align tailstock with headstock Page 28 results from one end headstock of workpiece to the other Chuck jaws will 1 Chips debris lodged in jaws 1 Remove jaws clean and lubricate jaws scroll gear not move or do not threads and chuck then replace jaws move easily Tailstock quill will not 1 Quill lock is tightened down 1 Turn quill lock counterclockwise t
57. kwise or counterclockwise rotation of the feed rod or leadscrew C Top Change Gear Transfers power from the drive gears to the middle change gear D Middle Change Gears Transfers power from the top change gear to the bottom change gear This is a 120T 127T combina tion gear 38 E Bottom Change Gear Transfers power from the middle change gears to the feed rate gearbox F Feed Direction Lever Selects which for ward reverse drive gear will transfer power from the spindle gear to the change gears G Pivot Bracket Provides positioning of the middle change gear so that it correctly mesh es with the top and bottom change gears Tools Needed Qty Hex Wrench 5 1 Wrench tt 1 Wrench 1 To re configure the change gears 1 DISCONNECT LATHE FROM POWER 2 Open the change gear door 3 Use the feed direction lever to engage one of the drive gears with the spindle gear to keep the change gears from rotating during the next step 4 Loosen the hex nut on the top change gear the hex nut on the middle change gears and the cap screw on the bottom change gear 5 Support the middle change gears loosen the hex nut securing the pivot bracket then allow the middle change gears and bracket to swing down 6 Remove the retaining fasteners of the top and bottom change gears then remove these
58. lculations 3 Use the following formula to determine the correct spindle speed RPM for your opera tion Cutting Speed SFM x 4 Spindle Diameter of Cut Configuring the V Belts and Back Gear There are twelve spindle speeds are available by properly positioning the motor V belt spindle V belt and back gears To configure the V belts 1 DISCONNECT LATHE FROM POWER 2 Refer to the chart in Figure 49 and find the value closest to your calculated spindle speed Note This chart is also on the front of the headstock The Direct speeds are with the back gear disengaged Instructions for engaging the back gear are on Page 35 AW 2 3 DIRECT 444 300 4 BACK GEAR 220 165 120 Figure 49 Spindle speed configuration chart G9249 12 x 37 Belt Drive Gap Bed Lathe 3 Release V belt tension pulling the To engage the back gears tensioning lever forward lift the headstock cover then move the motor and spindle 1 DISCONNECT LATHE FROM POWER V belts to the positions indicated by the chart in Figure 49 2 Pull out the lock pin shown in Figure 51 and rotate it 90 so that it stays in the out posi For Example f you require a spindle speed tion of 655 RPM position the motor V belt in the position and the spindle V belt in the 3 position as shown in Figure 50 Note n the example above the back gears are not engaged Figure 51 Back gear lever and lock
59. le tube see Figure 104 for an example N Ed 1 DR M 59 10 11 60 Figure 105 Example of final inner spanner nut Move the carriage toward the spindle an additional 0 100 Tighten the inner spanner nut until you see the motion of the dial indicator needle just barely stop moving During the spanner nut tightening process rock the spindle back and forth slightly to make sure the spindle bear ings seat properly in the races Note When the dial indicator needle stops moving there will be no spindle end play and no bearing preload It is essential that you find this exact point without tightening the inner spanner nut too much and inadvertently preload the spindle bearings Since it can take great effort to turn the inner spanner nut you may find it difficult to know if you have gone past the zero end play point or not You may find it easier to have an assistant watch the dial for you while you tighten the spanner nut If you think you may have gone past the zero end play point take the time to unload the bearings as described in earlier steps then re tighten the spanner nut until you know you have reached the cor rect setting To set the correct amount of spindle bear ing preload rotate the inner spindle lock nut clockwise an additional 0 13 along its cir cumference See Figure 105 for an example of this measurement DE 14 us 0 13 Travel TLL v 24
60. long stock mounted on the lathe will begin to whip when the spindle is turned ON Always properly support long stock and use a slow spindle speed when cutting POWER FEEDS Always release power feeds after completing the job Power feeds left engaged can cause a crash when lathe is turned ON MAINTENANCE PROCEDURES Make sure lathe is turned OFF disconnected from power and all moving parts have come to a complete stop before starting any inspec tion adjustment or maintenance AVOIDING ENTANGLEMENT DO NOT wear loose clothing gloves or jewelry when operating lathe Tie back long hair and roll up sleeves EXPERIENCING DIFFICULTIES If any time you are experiencing difficulties performing the intended operation stop using the machine Contact our Technical Support at 570 546 9663 SECTION 2 CIRCUIT REQUIREMENTS 220V Operation AWARNING 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 AWARNING Electrocution or fire could result if machine is grounded and installed in compliance with electrical codes Compliance MUST be verified by a qualified electrician Full Load Amperage Draw This machine draws the following amps under maximum load 7 5 Amps Power Supply Circuit Requirements You MUST connect your machine to a grounded ci
61. ly to misuse abuse negligence accidents repairs or alterations or lack of maintenance This is Grizzly s sole written warranty and any and all warranties that may be implied by law including any merchantability or fitness for any par ticular purpose are hereby limited to the duration of this written warranty We do not warrant or represent that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants In no event shall Grizzly s liability under this warranty exceed the purchase price paid for the product and any legal actions brought against Grizzly shall be tried in the State of Washington County of Whatcom We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the use of our products To take advantage of this warranty contact us by mail or phone and give us all the details We will then issue you a Return Number which must be clearly posted on the outside as well as the inside of the carton We will not accept any item back without this number Proof of purchase must accompany the merchandise The manufacturers reserve the right to change specifications at any time because they constantly strive to achieve better quality equipment We make every effort to ensure that our products meet high quality and durability standards and we hope you never need to use this warranty Please feel free to write
62. may be made at any time with no obligation on the part of Grizzly For your conve nience we always keep current Grizzly manuals available on our website at www grizzly com Any updates to your machine will be reflected in these manuals as soon as they are complete Visit our site often to check for the latest updates to this manual Contact Info We stand behind our machines If you have any service questions parts requests or general ques tions about the machine please call or write us at the location listed below Grizzly Industrial Inc 1203 Lycoming Mall Circle Muncy PA 17756 Phone 570 546 9663 Fax 800 438 5901 E Mail techsupport Q grizzly com If you have any comments regarding this manual please write to us at the address below Grizzly Industrial Inc Technical Documentation Manager P O Box 2069 Bellingham WA 98227 2069 Email manuals grizzly com 9 Functional Overview The metal lathe is used to remove material from a workpiece mounted on the rotating spindle The spindle receives power from the electric motor through the gears and belts in the headstock Tools used for turning or threading the workpiece are mounted on the carriage or tailstock The tooling is moved parallel or across the workpiece by moving the carriage or cross slide The move ment of these mechanisms is controlled manually by handwheels or automatically with the power feed Spindle speeds are selected by configuring
63. nd line up the tool for the 6 48 4 75 5 45 12201 1 5 09 75 5 05 03051 _ INCH THREAD TABLE 10 Turn ON the spindle and engage the half MOON nut according to the thread dial to cut your 11 2 32 2072550 Figure 60 Metric and additional inch thread chart NOTICE DO NOT engage the half nut when the spin dle speed is over 200 RPM Disregarding this notice may cause damage to the leadscrew or carriage components 123456718 or 4 41 43 4 5 512 6 1621 7 8 9 9 10 111112113114 16 32 64 72 76 80 88 96 11041112 Figure 61 Inch thread chart G9249 12 x 37 Belt Drive Gap Bed Lathe o 41 SECTION 5 ACCESSORIES G5562 SLIPIT 1 Qt Gel G5563 SLIPIT 12 oz Spray G2871 Boeshield T 9 12 oz Spray G2870 Boeshield T 9 4 oz Spray H3788 G96 Gun Treatment 12 oz Spray H3789 G96 Gun Treatment 4 5 oz Spray IOEING DEVELOPED Metal Protection AND WATERPROOF LUBRICATION does all three BOESHIELD tans Lubricates Figure 62 Recommended products for protect ing unpainted cast iron steel part on machinery H8257 Primrose Armor Plate with Moly D Machine and Way Oil 1 Quart This superior machine and way lubricant prevents stick slip and chatter due to anti friction capa bilities resulting in greater precision machining capabilities Provides the t
64. ndwheel felt when turning the handwheel but before the slide begins to move Note When adjusting backlash keep in mind the goal is to tighten the cross slide leadscrew without causing it to bind Overtightening will cause exces sive wear to the sliding block and leadscrew To adjust the cross slide backlash 1 DISCONNECT LATHE FROM POWER 2 Remove the rear splash pan from the lathe 3 From the rear of the cross slide loosen tighten the two Phillips head screws shown in Figure 99 until you are satisfied with the amount of backlash Figure 99 Cross slide backlash adjustment screws viewed from the rear of the cross slide 4 Re install the rear splash 57 Gap Removal The Model G9249 comes equipped with a gap section below the spindle that can be removed for turning large diameter parts or when using a large diameter faceplate The gap is installed then ground at the factory during lathe assembly for precise fit and align ment Factors during the remaining assembly apply additional forces to the gap making the replacement of the gap to the original position very difficult If you choose to remove the gap we do not recommend attempting to replace it Tools Needed Qty Hex Wrench 8 1 1 Wrench 12MM 1 Dead Blow Hammer 1 To remove the gap 1 DISCONNECT LATHE
65. ng it G9249 12 x 37 Belt Drive Gap Bed Lathe Check Gearbox 1 It is critical that you make sure there is oil in the headstock and apron before proceeding with the test run Refer to Lubrication beginning on Page 2 47 for detailed instructions 3 SMOR Test Run Once the assembly is complete test run your machine to make sure it runs properly and is ready for regular operation The test run consists of verifying the following 1 The motor powers up and runs correctly and 2 the safety features 4 works correctly If during the test run you cannot easily locate 5 source of an unusual noise or vibration stop using the machine immediately then review Troubleshooting on Page 53 If you cannot find a remedy contact our Tech Support at 570 546 9663 for assistance AWARNING Before starting the lathe make sure you have performed the preceding assembly and adjustment instructions and you have read through the rest of the manual and are familiar with the various functions and safety features on this machine Failure to follow this warning could result in serious personal injury or even death G9249 12 x 37 Belt Drive Gap Bed Lathe 9 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 Perform all lubrication procedures in the Lubrication subsection on Page 47 Make sure the 3 j
66. ng opera tions Special emphasis is placed on lathe com ponents accessories and operating procedures including basic machine setup and routine main tenance A must have reference for all metal lathe owners 260 pages Figure 77 H6879 Lathe Operation amp Maintenance Book 45 SECTION 6 MAINTENANCE AWARNING Always disconnect power to the machine before performing maintenance Failure to do this may result in serious person al injury Schedule For optimum performance from your machine follow this maintenance schedule and refer to any specific instructions given in this section Daily Check Loose mounting bolts e Damaged or worn belts Page 51 e Worn or damaged wires Any other unsafe condition Before Beginning Operation amp Every 8 Hours of Operation e Clean lathe e Lubricate headstock components Pages 47 48 e Lubricate feed rate gearbox Page 48 e Lubricate ball oilers Page 50 Every 40 Hours of Operation e Lubricate apron gearbox Page 49 e Lubricate back gear shaft Page 50 After First 3 Months of Operation and Annually Change headstock oil Page 47 46 Cleaning amp Protecting Disconnect the lathe from power before cleaning Vacuum excess metal chips as they accumu late and wipe off built up grime A CAUTION DO NOT use compressed air to blow away chips from the lathe to avoid the risk of flying metal debris injuring yourself or o
67. o loosen feed out of tailstock G9249 12 x 37 Belt Drive Gap Bed Lathe o 55 Adjusting Gibs Gibs control the accuracy of the carriage cross slide and compound slide movements along the ways Tight gibs make the movements more accurate but harder to perform Loose gibs make the movements sloppy but easier to perform The goal of gib adjustment is to remove unnecessary sloppiness without causing the ways to bind NOTICE Excessively loose gibs may cause poor workpiece finishes and may cause undue wear of sliding surfaces and ways Over tightening the gibs may cause premature wear of these sliding devices Tools Needed Qty Hex Wrench 6mm eene 1 Wrench 14 1 To adjust the saddle gib 1 DISCONNECT LATHE FROM POWER 2 Loosen the three hex nuts one full turn see Figure 95 Adjustment Set Screws Sie Figure 95 Gib adjustment set screws and hex nuts shown from rear of saddle 3 Loosen the three gib adjustment set screws a full turn then re tighten each one until you feel a slight resistance 56 4 Manually test the carriage movement and re adjust the set screws if necessary 5 When you are satisfied with the carriage movement re tighten the three hex nuts DO NOT over tighten Tools Needed Qty Standard Screwdriver 1 To adjust the cross slide and compound slide gibs 1 DISCONNECT LA
68. ols 4 Loosen the lock lever rotate the tool post to index the desired tool then re tighten the lock lever to secure the tool post and tool Note The 4 way tool post is aligned in four positions by an indexing pin in the compound slide that engages slots in the tool post base 33 Spindle Speed To set the correct spindle speed for your opera tion you will need to 1 Determine the spindle speed needed for your workpiece and 2 config ure the belts and gears for the calculated spindle speed Calculating the Correct Spindle RPM 1 Use the table in Figure 48 to determine the recommended cutting speed for the workpiece material Recommended Cutting Speeds Average Tool Speed sfm Rough Cuts Finish Cuts Magnesium 800 Aluminum 35 700 Brass amp Bronze 250 500 Copper 100 250 Cast Iron Soft 100 250 Cast Iron Hard 5 150 Mild Steel 100 250 Cast Steel 150 Alloy Steels Hard 5 150 Stainless Steel 60 180 Titanum 90 20 Note These values are based on HSS cutting tools For carbide cutting tools double the aver age speed These values are a guideline only Refer to the MACHINERY S HANDBOOK for more detailed information Figure 48 Cutting speed table Work Material iN O N 34 2 Determine the final diameter in inches for the cut you are about to take Note For this step you will need to aver age out the diameters or work with the finish diameter for your ca
69. on the cutting tool at angles other than 90 which is necessary when machining cham fers or when cutting threads Tools Needed Hex Wrench 1 To set the compound slide angle 1 Loosen the two cap screws on either side of the compound slide see Figure 46 Cap Screw 1 of 2 117 7 SMALL 7 Angle Scale PW AS a S yen mm Figur 1 28 46 Compound slide angle controls 2 Rotate the compound slide to the desired angle to the workpiece Use the indicator mark on the base of the compound slide and the angle scale on top of the cross slide to determine the angle 3 Re tighten the two cap screws to secure the compound slide in position G9249 12 x 37 Belt Drive Gap Bed Lathe 9 Tool Posts The Model G9249 ships with a standard tool post and a 4 way tool post The advantage of the 4 way tool post is that it can hold four tool holders or tools at one time that can be indexed rotated to the workpiece as needed Tools Needed 4 Way Tool Post 1 To load and use the 4 way tool post 1 Loosen the tool post bolts until the tool fits underneath the bolts as shown in Figure 47 Note 7o properly secure the tool make sure a minimum of two post bolts are holding the tool 2 Evenly and firmly tighten the post bolts to secure the tool 3 Repeats Steps 1 2 for the remaining to
70. on to turn the lathe OFF and move the spindle direction lever to the center OFF position WITHOUT resetting the emergency stop but ton pull up on the spindle direction lever The machine should not start the machine does not start the emer gency stop button safety feature is working correctly the machine does start with the emer gency stop button pushed in immediately disconnect power to the machine The emergency stop button safety feature is not working correctly This safety feature must work properly before proceeding with regu lar operations Call Tech Support for help 9 NOTICE Make sure the headstock oil level is correct and all other parts are properly lubricated as outlined in this manual before you start the Test Run Failure to do so could lead to premature failure of your lathe and will void the warranty 11 12 13 Reset the emergency stop button then restart the spindle rotation For each of the safety features listed below reset the tested safety feature When each safety feature is tested the machine should not start indicating that the safety feature is working correctly the machine does start when each safety feature is used immediately use the emer gency stop button to turn the machine OFF and disconnect the power to the machine That safety feature is not working correctly Each of these safety features must work properly before proceeding with testing or
71. ong the length of the workpiece The follow rest is used on long slender parts to pre vent flexing of the workpiece from the pressure of the cutting tool The follow rest requires only two fingers as the cutting tool acts as the third Cap Screws T Figure 44 Follow rest mounted saddle The follow rest is installed removed with two cap screws at the base The fingers are set against the workpiece in the same manner as those of the steady rest Always lubricate the finger tips with an anti seize grease during operation 32 Cross Slide Handwheel Dial Increments Resolution Upper 0 002 Lower Marks emm 0 04mm The cross slide sits directly on the saddle and moves perpendicular to the spindle center line when the handwheel is rotated see Figure 45 Compound Slide R1 j 3 7 24 The cross slide graduated dial is a direct read dial The actual distance the cross slide moves is 2 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 Compound Slide Handwheel Dial Increments Resolution Black 0 001 Marks een 0 02mm The compound slide see Figure 45 sits on the cross slide and is the base for the tool post An important feature of the compound slide is that it can positi
72. or call us if you have any questions about the machine or the manual Thank you again for your business and continued support We hope to serve you again soon TOOL WEBSITE Buy Direct and Save with Grizzly Trusted Proven and a Great Value Visit Our Website Today And Discover Why Grizzly Is The Industry Leader e SECURE ORDERING e ORDERS SHIPPED WITHIN 24 HOURS E MAIL RESPONSE WITHIN ONE HOUR Call Today ForA FREE Full Color Catalog 0 17 ISA ER MasterCard 6129 5 NOVUS RESS
73. or the sake of expediency replacements can be obtained at your local hardware store 12 o G9249 12 x 37 Belt Drive Gap Bed Lathe Box 2 Inventory Figure 4 Qty Y Left Cabinet Stand 1 Clean U D 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 For thorough cleaning some parts must be removed For opti mum performance from your machine clean all moving parts or sliding contact surfaces Avoid chlorine based solvents such as acetone or brake parts cleaner that may damage painted surfaces Always follow the manufacturer s instruc tions when using any type of cleaning product AWARNING Gasoline and petroleum Box 3 Inventory Figure 5 Qty products have low flash Figure 4 Box 2 inventory Z Right Cabinet Stand 1 points and can explode or cause fire if used to clean machinery DO NOT use these products to clean the machinery A CAUTION Many cleaning solvents are toxic if inhaled Minimize your risk by only using these products in a well ventilated area G2544 Solvent Cleaner amp Degreaser A great product for removing the waxy shipping Figure 5 Box 3 inventory grease from your machine during clean up AWARNING SUFFOCATION HAZARD Immediately discard all plas tic bags and packing materi als to eliminate choking
74. ps rated for at least 1500 lbs As Needed e Power Lifting Equipment rated for at least 1500 lbs As Needed e Floor Mounting Hardware As Needed As Needed Unpacking Your machine was carefully packaged for safe transportation Remove the packaging materials from around your machine and inspect it If you discover the machine is damaged please imme diately call Customer Service at 570 546 9663 for advice Save the containers and all packing materials for possible inspection by the carrier or its agent Otherwise filing a freight claim can be difficult When you are completely satisfied with the condi tion of your shipment inventory the contents 11 Inventory The following is a description of the main compo nents shipped with your machine Lay the compo nents out to inventory them Note f you 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 Box 1 Inventory Figure 3 Qty A 12 x 37 Lathe w 3 Jaw Chuck 6 Steady Rest and Follow Rest Installed 1 B Rubber Gaskets Lathe StandQ 2 C Brackets Center Panel 2 D Complete Bolt Bag 1 Hex Bolts M12 1 75 x 50 Lathe Stand 6
75. r 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 20 Pc Carbide Tipped Tool Bit Sets G9775 A4 G9776 3 9777 12 An exceptional value for carbide lathe tool bits Twenty piece sets offer tremendous savings over bits sold individually Includes ten C 2 grade bits and ten C 6 grade bits for cutting steel and alloys 4 4 y M lt 4 4 4 4 4 4 4 5 4 4 Figure 66 20 Carbide Tipped Tool Bit Sets H2670 HSS Square Tool Bits Our ground tool bits are M 2 HSS making them some of the most durable tool bits around Make your own specialized cutters in any shape using a silicon carbide grinding wheel G8235 37 on your grinder Figure 67 H2670 HSS Square Tool Bits Call 1 010 2329 017777 110 19249 12 37 Drive Gap Bed Lathe Glance 7 Pc Insert Turning Tool Sets 5680 5 16 5682 1 2 H5682 Carbide Inserts Package of 10 Here s a precision set for precision turning These tools have been machined to exacting specifica tions and feature rugged tool steel bodies with black oxide finish They all use the same carbide inserts that are indexable to use all four faces Supplied in a fitted case Figure 68 Glance 7 Pc Insert Turning Tool Sets G5640 5 Pc Indexable Carbide Tool Set G6706 Replacement TiN Coated Carbide Indexa
76. r Top Lid are Opened Precision Hardened and Ground V Bed Threading Dial Uses Tooth Belt to Reduce Vibration and Noise Accessories Included 10 Face Plate 4 Way Tool Post 6 3 Jaw Chuck 8 4 Jaw Chuck Center Sleeve Centers Follow Rest Manual Metric Threading Change Gears Rocker Style Tool Post Service Tools Steady Rest Toolbox o G9249 12 x 37 Belt Drive Gap Bed Lathe SECTION 1 SAFETY AWARNING For Your Own Safety Read Instruction Manual Before Operating this Machine The purpose of safety symbols is to attract your attention to possible hazardous conditions This manual uses a series of symbols and signal words intended to convey the level of importance of the safety messages The progression of symbols is described below Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures T Indicates an imminently hazardous situation which if not avoided DANG z H WILL result in death or serious injury AW AR N Indicates a potentially hazardous situation which if not avoided COULD result in death or serious injury A CAUTION NOTICE Indicates a potentially hazardous situation which if not avoided MAY result in minor or moderate injury It may also be used to alert against unsafe practices This symbol is used to alert the user to useful information about proper operation of the machine AWARNING Safety Instructions for Mach
77. rcuit that is rated for the amperage given below Never replace a circuit breaker on an existing cir cuit with one of higher amperage without consult ing a qualified electrician to ensure compliance with wiring codes If you are unsure about the wiring codes in your area or you plan to con nect your machine to a shared circuit consult a qualified electrician Minimum Circuit 55 15 Amps 10 Minimum Cord Requirements For 220V connection use a stranded copper flex ible cord that meets the minimum requirements listed below does not exceed 50 ft and has an insulation type that starts with S A qualified electrician MUST determine the best cord to use in your environment depending on exposure to moisture heat and oils Cord Requirements 14 3 AWG 300VAC Power Connection Device The type of plug required to connect your machine to power depends the type of service you rently have or plan to install We recommend using the plug shown in Figure 2 Grounded Outlet Box Current Carrying Prongs Grounding Prong Is Longest of the Three Prongs Figure 2 NEMA 6 15 plug and receptacle Extension Cords Using extension cords may reduce the life of the motor Instead place the machine near a power source If you must use an extension cord e Use at least a 14 gauge cord that does exceed 50 feet in length The extension cord must also
78. regular operations Call Tech Support for help a Open the change gear door no more than 2 the machine should not start b Lift the headstock cover no more than 2 the machine should not start c Lift the chuck guard up no more than 2 the machine should not start After successfully completing all the Test Run steps proceed to Spindle Break In G9249 12 x 37 Belt Drive Gap Bed Lathe 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 Recommended Adjustments For your convenience the adjustments listed below have been performed at the factory However because of the many variables involved with shipping we recommend that you at least verify the following adjustments to ensure the best To correctly break in the spindle bearings possible results from your new machine 1 DISCONNECT LATHE FROM POWER Step by step instructions for these adjustments can be found in the SERVICE section starting on 2 Make sure the lathe is properly lubricated Page 53 refer to Lubrication on Page 47 for detailed instructions Factory adjustments that should be verified 3 Set the motor and drive belts for the lowest e adjustment Page 56 spindle speed and engage the back gear refer to Spindle Speed on Page 34 for e Tailstock alignment Page 28 and lock detailed instructions 4 Disengage the po
79. rmal operating tem perature G9249 12 x 37 Belt Drive Gap Bed Lathe DISCONNECT LATHE FROM POWER Remove the chuck or faceplate and the change gear door Engage a feed direction gear with the out bound spindle gear to keep the spindle from turning Using a spanner wrench or a hammer and punch loosen and remove the outer spanner nut see Figure 102 __ brizzhi 0 Spanner Lock Nuts Figure 102 Spindle spanner nuts Loosen the inner spanner nut one turn Note You may have to tap on the outboard spindle tube as explained in Step 7 to help unload the spindle and break the inner span ner nut loose G9249 12 x 37 Belt Drive Gap Bed Lathe Figure Figure 104 Example of test indicator setup 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 Note Your goal is slide the spindle forward Just enough to introduce spindle end play that you can feel by hand Ju mu 55 4 14 Ay 7 dil X E 4 nec Y 258 y 222 21 7 1 103 Example of introducing detectable end play b Place a test indicator on the cross slide and move the carriage toward the headstock until the contact point of the indicator touches the rim of the spind
80. rmined by the machined material the type of tooling used and by the desired finish Refer the table in Figure 52 or the Machinery s Handbook for guidelines Note These instructions are valid only for feed rod power feed Feed rate configuration for thread ing is discussed in the Threading subsection starting on Page 40 Recommended Feed Rates Tool Feed Rate IPR Rough Cuts Finish Cuts 0 015 0 025 0 005 0 010 0 015 0 025 0 005 0 010 0 015 0 025 0 003 0 010 0 010 0 020 0 004 0 008 0 015 0 025 0 005 0 010 0 010 0 020 0 003 0 010 0 010 0 020 0 003 0 010 0 010 0 020 0 003 0 010 0 010 0 020 0 003 0 010 0 010 0 020 0 003 0 010 0 010 0 020 0 003 0 010 0 010 0 020 0 003 0 010 0 010 0 020 0 003 0 010 Note These values are a guideline only Refer to the MACHINERY S HANDBOOK for more detailed information Figure 52 Feed rate table To set the feed rate 1 Use the spindle direction lever to turn the spindle OFF then allow the spindle to com pletely stop before making gear changes 2 Make sure the change gears are in the con figuration 40 127 40 as illustrated in Figure 53 refer to Change Gears on Page 38 for detailed instructions Note 7he Model G9249 ships with the change gears in the 40 127 40 configu ration which will cover most feed rates and inch threading G9249 12 x 37 Belt Drive Gap Bed Lathe 3 Refer to the table in Figure 53 and find the value closes
81. rotation Note Using the leadscrew for powered movement 6 Return the feed rod leadscrew lever to the of the carriage is discussed in the Threading sub center position to disengage the power feed section starting on Page 40 NOTICE High feed rates combined with high spindle speeds results in a rapidly moving carriage or cross slide Pay close attention to the feed rate you have chosen and keep your hand poised over the feed change lever Failure to fully understand how to operate from the feed rod NOTICE Never engagethe 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 the power feed can lead to carriage or cross slide crash that may permanently damage the machine To engage the feed rod 1 Use the spindle direction lever to turn the spindle OFF then allow the spindle to com pletely stop before making gear changes NOTICE Always make sure the spindle is turned OFF and has come to a complete stop BEFORE changing gearing configurations to avoid the risk of permanently damaging your lathe 2 Move the feed direction lever for the desired feed rod rotation direction and carriage cross slide movement Note A directions reverse when spindle rotation is reversed 36 o G9249 12 x 37 Belt Drive Gap Bed Lathe Setting Feed Rate Feed rate is dete
82. s away from the motor fan cover let motor cool and reduce workload on machine 12 Spindle switch is at fault 12 Test replace if necessary 13 Motor is at fault 13 Test repair replace 14 Centrifugal switch is at fault 14 Adjust replace 54 o G9249 12 x 37 Belt Drive Gap Bed Lathe Operations Bad surface finish 1 Incorrect spindle speed or feed rate 1 Adjust for proper spindle speed and feed rate Page 34 2 Dull tool or poor tool selection 2 Use sharp tools use correct tool for the operation 3 Too much play in gibs 3 Adjust gibs Page 56 4 Tool too high 4 Lower tool position Cannot remove 1 Quill not retracted all the way back into the 1 Rotate quill handwheel until the tapered tool is tapered tool from tailstock forced out of quill tailstock quill 2 Debris oil not removed from tapered mating 2 Always make sure that tapered mating surfaces are surfaces before inserting into quill clean before inserting Gear s will not line 1 Gear s not aligned in headstock 1 Rotate spindle by hand until gear s falls into place up and mesh Cutting tool 1 Tool holder not tight enough 1 Check for debris clean and re tighten or machine 2 Cutting tool too far out from holder lack of 2 Re install cutting tool with no more than of total components vibrate support length is sticking out of tool holder un during 3 Too much play in gibs 3 Adjust gibs Page 56 4 Cutt
83. serious personal injury Keep these items away from moving parts at all times to reduce this risk N Figure 18 Headstock controls If you have never used this type of machine A Power Lamp Lights when power is available or equipment before We strongly recom to the motor mend that you read books trade magazines or get formal training before beginning any B Emergency Stop Button Stops the flow of projects Regardless of the content in this power to the motor This button must reset section Grizzly Industrial will not be held before the machine can start again liable for accidents caused by lack of train ing C Jog Button Hotate the spindle clockwise when pressed 20 o G9249 12 x 37 Belt Drive Gap Bed Lathe D Feed Direction Lever Controls direction or stops center position the rotation of the feed rod or leadscrew E Feed Rod Leadscrew Lever Selects feed rod rotation when positioned to the left leadscrew rotation when positioned to the right and stops the rotation of either when in the center position F Feed Rate Selectors Sets the feed rate of the feed rod or leadscrew Carriage Controls Use Figure 19 and the descriptions below to become familiar with the carriage controls and their functions Figure 19 Carriage controls Cross Slide Handwheel Moves the top compound slide toward and away from the workpiece B Compound Slide Handwheel Controls the position of the cu
84. t to your desired feed rate either in millimeters per revolution top values or in inches per revolution bottom values Note This table is also on the bottom of the label to the left of the feed rate selectors FEEDING TABLE WW 40 1121314 1567 8 oth EARNAN E c Figure 53 Feed rate table 4 Pull the knob of the feed rate selector and rotate it down Line up the selector with the desired indent rotate the selector up and allow the pin to engage into the indent see Figure 54 Note t may be necessary to jog the spindle to facilitate movement of the selectors EN e 13 16 18 19 120 221 24 Figure 54 Feed rate selectors For Example operation is a shallow finish cut on an aluminum workpiece The chart in Figure 52 recommends a feed rate of 0 005 0 100 IPR inches per revolution Because this is a shallow cut we could select a feed rate of 0 0082 IPR To set this feed rate seat the left feed rate selector in the indent and the right selector in the 1 indent 287 Change Gears Change gears are configured to provide a wider range of feed rates and inch metric threading Use Figure 55 and the descriptions below to become familiar with the components of the change gear system Figure 55 Change gear system A Spindle Gear Transfers power from the spindle to the change gear system B Forward Reverse Drive Gears Selects cloc
85. th ers or driving the chips deep into the lathe mechanisms resulting in damage or prema ture wear Use a dry cloth to wipe off any remaining coolant at the end of the day Metal chips left on the machine soaked with water based coolant will invite oxidation and gummy resi due to build up around moving parts Follow Federal State and the manufacturer s requirements to properly dispose of used coolant and cleaning products Protect the unpainted cast iron surfaces on the lathe by wiping them clean after every use this ensures moisture does not remain on bare metal surfaces 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 Lubrication Your lathe has numerous moving metal to metal contacts that require proper lubrication to help ensure efficient and long lasting operation Other than lubrication points covered in this sec tion all other bearings are internally lubricated and sealed at the factory Simply leave them alone unless they need to be replaced Before adding lubricant clean away any debris and grime from the lubrication point to avoid con taminating the lubricant and increasing wear of the moving parts DISCONNECT THE LATHE FROM POWER BEFORE PERFORMING LUBRICATION PROCEDURES Spindle Bearing Oil ISO 68 SAE 20W
86. th the top and bottom gears Make sure there is a backlash of 0 002 0 003 between the gears then tighten the middle change gear hex nut and the pivot bracket hex nut Note Setting the gears too tight will cause excessive wear and noise Setting the gears too loose may cause slippage and gear tooth breakage Close and secure the change gear door before beginning operations 39 Threading Operation To cut threads 1 Set the compound rest to the appropriate angle for the thread you want to cut For a Unified National Series UNF thread this is 29 off of vertical to the spindle axis 2 If the thread dial Figure 58 is not engaged with the lead screw use a 5mm hex wrench to loosen the thread dial and rotate it to engage the lead screw then tighten the dial aT Ree SS Da SS EA 26 2 2 De T ot Lever meee ee 2 5 522 oe 77 Thread Dial iid Figure 58 Thread dial and half nut lever 3 Select the RPM you want to use A slower RPM will give you more time to react espe cially if threading over a short distance or threading up to a shoulder 4 Examine the thread charts inch or metric on Page 41 and set the feed rate as explained on Page 37 5 Turn ON the spindle to verify settings Check to see that the lead screw is turning and verify that the carriage moves in the correct dire
87. the gears and belts in the headstock Power feed rates of the carriage or cross slide are selected by configuring the change gears and feed rate selectors The usual cutting operations for this lathe include facing turning parting drilling reaming grooving knurling and threading There is a wide variety of tools and workpiece holding devices for each of these processes G9249 12 x 37 Belt Drive Gap Bed Lathe Identification Figure 1 Model G9249 identification R S LE U V W X Y Z Feed Direction Lever Change Gear Cabinet Electrical Cabinet Headstock Cover Chuck guard Belt Tensioning Lever 3 Jaw Chuck Steady Rest Follow Rest 4 Way Tool Post Cross Slide Compound Slide Tailstock Quill MT 3 Quill Lock Tailstock Lock Quill Handwheel OVOZErAL TOMNMOOD gt G9249 12 x 37 Belt Drive Gap Bed Lathe Headstock Threaded Spindle 274 8 MT 5 gt gt gt gt nmuoou Tailstock Longitudinal Leadscrew Feed Rod Thread Dial Spindle Direction Lever Half Nut Lever Apron Feed Change Lever Carriage Handwheel amp Dial Cross Slide Handwheel amp Dial Cabinet Stand Chip Pan Feed Rate Selectors Feed Rod Leadscrew Lever Jog Button Emergency Stop Button Power Lamp 7 gt Industrial Inc Customer Service 570 546 9663 To Order Call 800 523 4777 Fax 800 438 5901 MODEL G9249 12 X 37 BE
88. tock posi tion Turn another 0 010 off the diameter and check for a taper Repeat this process as necessary until the desired amount of accu racy is achieved Drilling with Tailstock The tailstock can be used to drill holes by mount ing a drill bit in the tailstock rotating the workpiece with the spindle then using the tailstock quill feed handwheel to advance the drill bit into the workpiece To set up the tailstock for drilling 1 Lock the tailstock in position then unlock the quill 2 Use the quill feed handwheel to extend the quill about one inch out of the tailstock 30 3 Insert the drill chuck arbor into drill chuck see Figure 40 then insert the assembly into the quill until the taper is firmly seated The matching tapers hold the arbor Drill Chuck Figure 40 Drill chuck and arbor Note Alternately MT 3 tapered drill bits can be used with the tailstock for drilling opera tions see Figure 41 1 Figure 41 Inserting tapered drill bit into the tailstock To remove a tapered drill arbor or drill bit 1 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 Steady Rest The steady rest serves as a support for long shafts where the length to diameter ratio is 3 1 or greater The steady rest can be positioned anywhere along the length of the workpiece or bedway
89. ts and anchor studs Figure 13 are two popular methods for anchoring an object to a concrete floor We sug gest you research the many options and methods for mounting your machine and choose the best that fits your specific application 22227 11 eo Anchor Stud 9 Lag Shield Anchor amp Bolt mim Ar m enu 11 M M Figure 13 Typical fasteners for mounting to concrete floors 16 Anchor studs are stronger and more per manent alternatives to lag shield anchors however they will stick out of the floor which may cause a tripping hazard if you decide to move your machine Using Machine Mounts Using machine mounts shown in Figure 14 gives the advantage of fast leveling and vibration reduc tion The large size of the foot pads distributes the weight of the machine to reduce strain on the floor Figure 14 Machine mount example NOTICE We strongly recommend securing your machine to the floor if it is hardwired to the power source Consult with your electrician to ensure compliance with local codes NOTICE The gap is installed then ground at the fac tory during lathe assembly for precise fit and alignment Factors during the assembly apply additional forces to the gap making replacing the gap to the original position very difficult If you choose to remove the gap we DO NOT recommend replaci
90. tting tool relative to the workpiece Thread Dial Indicates where to re engage the leadscrew with the half nut during thread ing operations D Half Nut Lever Engages the half nut with the leadscrew when in the down position and releases the half nut from the leadscrew when in the up position G9249 12 x 37 Belt Drive Gap Bed Lathe 9 E Spindle Direction Lever Starts reverses or stops the spindle rotation and feed rod or leadscrew if engaged F Feed change lever Selects either the car riage or the cross slide to engage with the feed rod when in motion Move the lever down to start the carriage moving along the spindle center line and move the lever up to move the cross slide across the spindle cen ter line Carriage Handwheel Moves the carriage parallel to the spindle center line Tailstock Controls Refer to the descriptions below and Figure 20 to understand the tailstock controls Quill d Tailstock Lock Figure 20 Tailstock with tailstock and quill lock in the locked positions Quill Lock Locks the quill in position when pushed up and frees the quill for movement when pulled down Tailstock Lock Locks the tailstock in place on the bedway when pushed forward and unlocks the tailstock when pulled back and down Quill Handwheel Moves the quill toward the spindle when rotated clockwise and retracts the quill into the tailstock when rotated counterclock wise
91. unted to floor Cutting tool is chattering Workpiece or chuck is at fault Spindle bearings are at fault Motor bearings are at fault 10 Gears are at fault 9 Rotate the emergency stop button clockwise until it pops out or replace faulty emergency stop button Make sure the change gear door is closed and secure the headstock cover is all the way down and the chuck guard is in the proper operational position Test power plug and receptacle for good contact and correct wiring Test capacitor and replace if necessary Test for power in and out on all legs and contactor operation replace if faulty Make sure circuit breaker fuse is sized correctly for machine load replace faulty breaker Correct motor wiring Page 66 Make sure all hot lines and grounds are operational and have correct voltage Replace faulty motor ON button Adjust replace Test replace if necessary Troubleshoot wires for internal external breaks check for disconnected or corroded connections repair or replace faulty wiring or connections Test repair replace Inspect replace stripped or damaged fasteners re tighten with thread locking fluid Replace re tension V belts Page 51 Repair replace dented fan cover or fan Inspect set screws keys replace tighten if necessary Re tighten replace machine mounting hardware as necessary use shims where required Re sharpen replace cutting tool index tool to
92. wer feed by moving the feed rod leadscrew lever to the neutral cen ter position refer Headstock Controls on Page 20 5 the machine to power 6 Pull up on the spindle direction lever to start spindle rotation counterclockwise Let the lathe run for a minimum of 10 minutes 7 Stop the spindle rotation and allow the spin dle to come to a complete stop 8 Push down on the spindle direction lever to start spindle rotation counterclockwise Let the lathe run for a minimum of 10 minutes 9 Stop the spindle and disconnect the machine from power 10 Repeat Steps 6 8 for each of the spindle speeds 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 o adjustment Page 57 Cross slide backlash Page 57 19 SECTION 4 OPERATIONS Operation Safety Basic Controls Headstock Controls AWARNING Use Figure 18 and the descriptions below to To reduce the risk of become familiar with the headstock controls and serious injury when using their functions this machine read and understand this entire manual before beginning any operations AWARNING 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 AWARNING Loose hair clothing or jewelry could get caught in machinery and cause
93. workpiece use correct feed rate and spindle speed Re center and properly secure workpiece in chuck or faceplate replace defective chuck faceplate Tighten replace spindle bearings Rotate motor shaft to check for noisy or burnt bearing repair replace as necessary 10 Replace bad gears bearings Motor amp Electrical continued Possible Cause Possible Solution Machine stalls or is 1 Wrong workpiece material Only process metal that has the correct properties overloaded for your type of machining Workpiece alignment is at fault Re center and properly secure workpiece in chuck or faceplate Incorrect spindle speed for task Correctly set V belts and gearing for your operation Page 51 Low power supply Make sure all hot lines and grounds are operational and have correct voltage Run capacitor is at fault Test and replace if necessary is slipping Check V belts and re tension replace if necessary Page 51 Plug or receptacle is at fault Test power plug and receptacle for good contact and correct wiring Motor connection is wired incorrectly Correct motor wiring Page 66 Motor bearings are at fault Hotate motor shaft to check for noisy or burnt bearing repair replace as necessary Machine is undersized for the task Use sharp cutting tools at the correct angle reduce feed rate or depth of cut and use coolant if possible 11 Motor has overheated 11 Clear obstacle
94. y Handyman Popular Science Wood Hand Loader Popular Woodworking Wooden Boat Handy Practical Homeowner Woodshop News Home Shop Machinist Precision Shooter Woodsmith Journal of Light Cont Projects in Metal Woodwork Live Steam RC Modeler Woodworker West Model Airplane News Rifle Woodworker s Journal Modeltec Shop Notes Other Old House Journal Shotgun News 3 What is your annual household income 20 000 29 000 30 000 39 000 40 000 49 000 50 000 59 000 60 000 69 000 70 000 4 What is your age group 20 29 30 39 40 49 50 59 60 69 70 5 How long have you been a woodworker metalworker 0 2 Years 2 8 Years 8 20 Years 20 Years 6 How many of your machines or tools are Grizzly 0 2 3 5 6 9 10 7 Do you think your machine represents a good value Yes NO 8 Would you recommend Grizzly Industrial to a friend Yes NO 9 Would you allow us to use your name as a reference for Grizzly customers in your area Note We never use names more than 3 times Yes NO 10 Comments FOLD ALONG DOTTED LINE Industrial Ine GRIZZLY INDUSTRIAL INC P O BOX 2069 BELLINGHAM WA 98227 2069 FOLD ALONG DOTTED LINE Send a Grizzly Catalog to a friend TAPE ALONG EDGES PLEASE DO NOT STAPLE WARRANTY AND RETURNS Grizzly Industrial Inc warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase This warranty does not apply to defects due directly or indirect
95. you are satisfied with the setting re tighten the jam nuts Replacing Motor V Belt Tools Needed Qty Hex Wrench tes kk edo Cerati a hai 1 To replace the motor V belt 1 DISCONNECT LATHE FROM POWER 2 Pull the belt tensioning lever forward to release V belt tension then roll the motor V belt off the motor pulley 3 Raise the headstock cover 51 4 52 Remove two idler pulley shaft bearing caps shown in Figure 93 Figure 93 V belts and pulleys Raise the idler pulley shaft until you can replace the V belt with a new one then lower the shaft onto the bottom bracket Note Make sure the bearings on either side of the pulley shaft are correctly positioned on the bracket Replace the bearing caps and re tension the V belt Spindle V Belt Proper tensioning of the spindle V belt is auto matically set when you push the belt tensioning lever back see Figure 90 To replace the spindle V belt with a new one you must remove the spindle assembly from the lathe This option is difficult and time consuming We recommend the alternative solution of just cutting the old V belt to remove it then replacing it with a Power Twist V Belt Power Twist V Belts H9815 A 12 x 4 H9816 3L 75 x 5 H9817 B Ys x 6 Perfect for lathes table saws bandsaws and other powered tools Smooth running with less vibration than solid belts Power Twist V Belts can be
96. ys 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 5 Lightly tap the breaker bar with the dead blow hammer to loosen the chuck or faceplate counterclockwise from the spindle threads removing a chuck open the jaws and slide the breaker bar between the jaws as shown in Figure 24 If removing the faceplate mount clamps on the faceplate and use the breaker bar in a similar manner Figure 24 Loosening the chuck from the spindle threads 6 Carefully unthread and remove the chuck or faceplate counterclockwise from the spindle threads Mounting a Chuck or Faceplate 1 DISCONNECT LATHE FROM POWER 2 Lay achuck cradle or a layer of plywood over the bedways to reduce the risk of injury and to protect the precision ground surfaces of the bedways 3 Clean debris from the threads of the spindle and chuck or faceplate then apply a thin film of light machine oil 4 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 5 Rotate the chuck or faceplate counterclock wise a turn then quickly rotate it back clockwise to seat the threads Note Attempting to overtighten the chuck or faceplate will make removal difficult and could damage the threads 6 Firmly install both spindle clamps on the

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