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Operation and Maintenance Instructions

Geared Head Bench Lathe

Model GHB-1236

JET

427 New Sanford Road
LaVergne, Tennessee 37086

Part No. M-321236

Ph.: 800-274-6848

Edition 2 05/2019

www.jettools.com

This .pdf document is bookmarked

Содержание GHB-1236

Страница 1: ...ance Instructions Geared Head Bench Lathe Model GHB 1236 JET 427 New Sanford Road LaVergne Tennessee 37086 Part No M 321236 Ph 800 274 6848 Edition 2 05 2019 www jettools com Copyright 2017 JET This pdf document is bookmarked ...

Страница 2: ...Keep children and visitors away All visitors should be kept a safe distance from the work area 14 Make the workshop child proof Use padlocks master switches and remove starter keys 15 Wear proper apparel Loose clothing gloves neckties rings bracelets or other jewelry may get caught in moving parts Non slip footwear is recommended Wear protective hair covering to contain long hair Do not wear any t...

Страница 3: ...can also be reached at our web site www jettools com Retain this manual for future reference If the machine transfers ownership the manual should accompany it Read and understand the entire contents of this manual before attempting assembly or operation Failure to comply may cause serious injury Register your product using the mail in card provided or register online http www jettools com us en se...

Страница 4: ...omatic feed operation and feed changes 15 10 5 Powered carriage travel 16 10 6 Thread cutting 16 11 0 Adjustments 16 11 1 Saddle adjustment 16 11 2 Cross slide adjustment 16 11 3 Compound slide adjustment 16 11 4 Tailstock adjustment 16 11 5 Half nut gib adjustment 17 11 6 Headstock alignment 17 11 7 Removing gap bridge 17 11 8 Installing gap bridge 17 12 0 Thread and feed chart 18 13 0 Replacemen...

Страница 5: ...p Exploded View 43 13 11 2 Stand Brake Coolant Pump Parts List 45 13 12 1 Electrical Box Assembly Exploded View 46 13 12 2 Electrical Box Assembly Parts List 47 13 13 1 Steady Rest and Follow Rest Parts List 48 13 13 2 Steady Rest and Follow Rest Parts List 49 13 14 1 Chuck and Leadscrew Guards Exploded View 50 13 14 2 Chuck and Leadscrew Guards Parts List 50 13 15 1 Accessories Exploded View 51 1...

Страница 6: ...16 2 15 16 in 8 74 6 mm Follow rest capacity 2 3 16 in 55 6 mm Headstock Hole through spindle 1 9 16 in 39 7 mm Spindle nose D1 4 Taper in spindle nose MT5 Spindle taper adaptor MT3 Spindle bearing type Taper roller bearing Number of spindle speeds 9 Range of spindle speeds 75 1400 RPM Leadscrew 7 8 in x 8 TPI Feed rod diameter 3 4 in 19 mm Gearbox Number of longitudinal and cross feed rates 48 36...

Страница 7: ...hipping weight approx 1430 lb 648 6 kg 1 subject to local and national electrical codes 2 The specified values are emission levels and are not necessarily to be seen as safe operating levels As workplace conditions vary this information is intended to allow the user to make a better estimation of the hazards and risks involved only L length W width H height TPI threads per inch n a not applicable ...

Страница 8: ...ey Set 2 3 4 5 6mm 1 22T Gear 1 26T Gear 1 38T Gear 1 44T Gear 1 52T Gear 2 MT 3 Dead Centers 1 MT 3 Live Center 1 MT 3 to MT 5 Center Sleeve 1 Cross Point Screwdriver 1 Flat Head Screwdriver 1 Quick Change Tool Holders 250 202 250 204 250 207 250 210 1 Key for 3 Jaw Chuck 1 Key for 4 Jaw Chuck 1 Key for Cam Locks 1 Set of Reverse Jaws for 3 Jaw Chuck 1 Handle for Cross Slide Handwheel 1 Handle fo...

Страница 9: ...ys check to make sure lathe is level side to side and front to back If necessary loosen mounting bolts shim and retighten mounting bolts The lathe must be level to be accurate 5 3 Chuck preparation three jaw Read and understand all directions for chuck preparation Failure to comply may cause serious injury and or damage to the lathe Note Before removing chuck from spindle place a way board across ...

Страница 10: ...vy non slinging grease see Figure 6 2 Do not get grease on pulleys or belts 3 Gear Shaft Remove set screw F Figure 8 2 and oil with a couple drops of Mobil DTE Oil Heavy Medium once weekly 4 Gearbox Oil must be up to indicator mark in oil sight glass B Figure 6 1 Top off with Mobil DTE Oil Heavy Medium Fill by removing plug D Figure 6 2 Drain oil by removing drain plug E Figure 6 2 and refill afte...

Страница 11: ...commendations 7 1 GROUNDING INSTRUCTIONS This tool must be grounded In the event of a malfunction or breakdown grounding provides a path of least resistance for electric current to reduce the risk of electric shock This tool is equipped with an electric cord having an equipment grounding conductor If a plug is used the plug must be inserted into an appropriate outlet that is properly installed and...

Страница 12: ... 50 100 200 300 AWG 00 06 18 16 16 14 06 10 18 16 14 12 10 12 16 16 14 12 12 16 14 12 Not Recommended Table 2 Extension cord recommendations 8 0 General description 8 1 Lathe bed The lathe bed A Figure 8 1 is made of high grade cast iron By combining high cheeks with strong cross ribs a bed with low vibration and high rigidity is realized Two precision ground V slideways reinforced by heat hardeni...

Страница 13: ... the free tailstock end The steady rest is mounted on the bedway and secured from below with bolt nut and locking plate 8 10 Follow rest The traveling follow rest G Figure 8 2 is mounted on the saddle and follows the movement of the turning tool Only two fingers are required as the turning tool takes the place of the third The follow rest is used for tuning operations on long slender workpieces It...

Страница 14: ...n be entered 16 Forward Reverse Lever H Figure 9 2 Pull lever up for clockwise spindle rotation reverse Push lever down for counter clockwise spindle rotation forward Neutral position is a center detent and spindle remains idle 17 Compound Rest Lock I Figure 9 3 Turn hex nut clockwise to lock and counter clockwise to unlock 18 Compound Slide Lock J Figure 9 4 Turn set screw clockwise to tighten an...

Страница 15: ...over most inch feeds and threads under normal circumstances The additional gears found in the toolbox are used for some metric threads and feeds 1 Disconnect machine from power source 2 Open the cover on left end of headstock 3 Loosen hex nuts E F Figure 10 2 Move quadrant out of the way 4 Change gears G Figure 10 2 to match feed and thread chart 5 Thoroughly clean and install new gears 6 Move qua...

Страница 16: ...tance is felt Do not overtighten 3 Move carriage with handwheel and determine if drag is to your preference Readjust setscrews as necessary to achieve desired drag 4 Hold socket set screw firmly with a hex wrench and tighten hex nut to lock in place 5 Move the carriage again and adjust if necessary Note Over adjustment will cause excessive premature wear of gibs Figure 11 1 11 2 Cross slide adjust...

Страница 17: ...t along five inches of bar stock 5 Using a micrometer measure bar stock next to the chuck and at the end The measurement should be the same 6 If the measurements are not the same and adjustment is required loosen the four bolts that hold headstock to bed Do not loosen completely some drag should remain 7 Loosen two hex nuts found on the two adjusting bolts located on backside of headstock just abo...

Страница 18: ...18 12 0 Thread and feed chart Table 3 ...

Страница 19: ...teners can be found at local hardware stores or may be ordered from JET Some parts are shown for reference only and may not be available individually 13 1 1 Bed Assembly Exploded View 13 1 2 Bed Assembly Parts List Index No Part No Description Size Qty 101 GHB1236 101 Lathe Bed 1 102 TS 1492041 Hex Cap Screw M12X40 6 103 GHB1236 103 Rack Gear 1 104 JJP8BT 123 Hex Socket Hd Cap Screw M6X15 6 105 ZX...

Страница 20: ...20 13 2 1 Headstock Assembly Exploded View ...

Страница 21: ...21 ...

Страница 22: ...236 230 Gear 83T 1 231 GHB1236 231 Gasket 1 232 GHB1236 232 Cover 1 233 GHB1236 233 Spindle 1 234 GHB1236 234 Shaft 1 235 GHB1236 235 Gear 40T 1 235a GHB1236 235A Gear 45T 2 236 GHB1236 236 Cover 1 237 GHB1236 237 Washer 1 238 GHB1236 238 Shaft 1 239 GHB1236 239 Gear 40T 1 240 GHB1236 240 Headstock Casting 1 240b GHB1236 240B Cover 1 240c GHB1236 240C Washer 1 241 TS 1503031 Hex Socket Hd Cap Scre...

Страница 23: ...GHB1236 278 Pulley Brake Assembly 25x125 1 279 GHB1236 279 Handle 2 279a GHB1236 279A Handle 1 280 GHB1236 280 Boss 2 281 GHB1236 281 Gear 19T 2 282 GHB1236 282 Gear 38T 2 283 GHB1236 283 Shaft 2 284 GHB1236 284 Shaft Arm 2 285 GHB1236 285 Shift Fork 2 286 GHB1236 286 Shift Fork 1 287 GHB1236 287 Shaft arm 1 288 GHB1236 288 Collar 1 289 GHB1236 289 Shaft 1 290 GHB1236 290 Boss 1 291 GHB1236 291 Ha...

Страница 24: ...24 13 3 1 Gearbox Assembly Exploded View ...

Страница 25: ...25 ...

Страница 26: ...27 Gear Box Casting 1 327a GHB1236 327A Copper Washer 16mm 2 327c GHB1236 327C Oil Plug M16X1 5 2 328 TS 1503031 Hex Socket Hd Cap Screw M6X12 4 329 TS 1503041 Hex Socket Hd Cap Screw M6X16 3 330 BDB919 021 Oil Port 6MM 1 331 BB 6002 Bearing 6002 3 332 BB 16003 Bearing 16003 1 333 BB 6003 Bearing 6003 8 334 TS 2276081 Socket Set Screw M6X8 1 335 EGH1740 B62 Key Double Rd Hd A5 35 1 336 5303911 Key...

Страница 27: ...TS 1504041 Hex Socket Hd Cap Screw M8X20 6 379 TS 1521031 Socket Set Screw CP M4X8 2 379a TS 1522021 Socket Set Screw CP M5X8 1 380 F010440 Socket Set Screw FP M8X6 4 381 KF2R5508 Key Double Rd Hd A5X8 4 382 5515754 Phillips Flat Hd Mach Screw M6X10 6 383 SB 6MM Steel Ball 6MM 4 384 GHB1236 384 O Ring 12X1 8 4 385 GHB1236 385 O Ring 16X2 4 4 386 GHB1236 386 O Ring 22X2 4 1 387 GHB1236 387 Oil seal...

Страница 28: ...28 13 4 1 Apron Assembly Exploded View ...

Страница 29: ...82011 Hex Cap Screw M6X10 1 427 TS 1550041 Flat Washer M6 1 428 GHB1236 428 Shaft 1 429 GHB1236 429 Locating Block 1 430 GHB1236 430 Grooved Disc 1 431 GHB1236 431 Lever 1 432 GB117 5X40 Taper Pin 5X40MM 1 433 GHB1236 433 Lever Hub 1 434 BDB919 606 Oil Sight Glass M22X1 5 1 435 TS 1533042 Phillips Pan Hd Mach Screw M5X12 2 436 GHB1236 436 Washer 1 437 WSS3 017 Roll Pin 4X30MM 1 438 F012094 Roll Pi...

Страница 30: ...ial 1 466 GHB1236 466 Indicator 1 467 GHB1236 467 Handwheel 1 468 GHB1236 468 Handle 1 469 GHB1236 469 Handle screw 1 470 GHB1236 470 Washer 1 471 GHB1236 471 Screw 1 472 F010441 Socket Set Screw DP 5X30 1 473 GHB1236 473 Shaft 1 474 GHB1236 474 Gear 1 475 GHB1236 475 Shaft 1 476 GHB1236 476 Washer 1 477 ZX S48 Roll Pin 5X30 1 478 GHB1236 478 Gear 1 479 GHB1236 479 Cap 1 ...

Страница 31: ...31 13 5 1 Cross Slide Assembly Exploded View ...

Страница 32: ...S 2276081 Socket Set Screw CP M6 8 1 523 TS 1490041 Hex Cap Screw M8 25 7 524 TS 1540061 Hex Nut M8 4 525 GHB1236 525 Screw spcl M8 25 4 526 GHB1236 526 Press plate 2 527 GHB1236 527 Wiper 1 528 GHB1236 528 Press Plate 1 529 GHB1236 529 Press Plate 1 530 5510675 Key Double Rd Hd 5 20MM 1 531 GHB1236 531 Press Plate 1 532 PN04002408 Roll Pin 4X25MM 1 533 GHB1236 533 Index Ring 1 534 BDB919 711 Leaf...

Страница 33: ...33 13 6 1 Compound Rest Assembly Exploded View ...

Страница 34: ... Knurling Holder 1 608 5 Socket Set Screw M10X20 2 608 6 Hex Nut M10 1 608 7 Roller Shaft 2 608 8 Idler Wheel 2 609 GHB1236 609 Universal Parting Blade Holder 1 609 1 Wave Washer 10MM 1 609 2 Round Thumb Nut 10MM 1 609 3 Socket Set Screw M10X45 1 609 4 Parting Holder 1 609 5 Screw 1 609 6 Hex Nut M10 1 609 7 Lock Nut 1 610 GHB1236 610 Heavy Duty Boring Bar Holder 1 610 1 Wave Washer 10MM 1 610 2 R...

Страница 35: ...628 Bearing Housing 1 629 GHB1236 629 Long Handle 1 630 GHB1236 630 Index Ring 1 631 GHB1236 631 Handwheel 1 632 GHB1236 632 Washer 1 633 GHB1236 633 Hex Socket Cap Screw M6 12 1 634 GHB1236 634 Bolt 1 635 GHB1236 635 Leaf spring 1 636 GHB1236 551 Handle 1 637 BDB919 021 Ball Oiler 6MM 3 ...

Страница 36: ...36 13 7 1 Tailstock Assembly Exploded View ...

Страница 37: ...crew 1 714 GHB1236 714 Cam Lock Nut 1 715 GHB1236 715 Key spcl 1 716 TS 1501041 Hex Socket Hd Cap Screw M4x12 3 717 GHB1236 717 Nut 1 718 GHB1236 718 Quill 1 719 GHB1236 719 Tailstock Casting 1 720 GHB1236 720 Lock Screw 1 721 GHB1236 721 Handle 1 722 GHB1236 722 Shaft 1 723 GHB1236 723 Handle 1 724 GHB1340 116 Dowel Pin 5 30MM 1 725 GHB1236 725 Eccentric Collar 1 726 F010442 Socket Set Screw DP M...

Страница 38: ...807 Compound Gear 120T 127T 1 808 BB 6003 Bearing 6003 2 809 GHB1236 809 Collar 1 810 GHB1236 810 Quadrant 1 811 GHB1236 811 Screw 1 812 F006033 C Retaining Ring Int 35MM 1 813 TS 1550071 Flat Washer M10 1 814 GHB1236 814 Double End Stud M10X60 1 815 GHB1236 815 Spacer 1 816 GHB1236 816 Gear 48T 1 817 KF2R5508 Key Double Rd Hd A5X8MM 1 818 GHB1236 818 Washer 1 819 GHB1236 819 Change gear 22T 1 820...

Страница 39: ...39 13 9 1 Feed Rod Assembly Exploded View ...

Страница 40: ...GHB1236 918 Handle 1 919 F006053 C Retaining Ring Ext 32MM 1 920 GHB1236 920 Spring 1 5 30MM 1 921 TS 1524011 Socket Set Screw M8X8 5 922 GHB1236 922 Sleeve 1 923 PS042400 Roll Pin 4X24MM 1 923a GHB1236 923A Taper Pin 4X24MM 1 924 GHB1236 924 Shaft 1 925 BD920N GB39 Roll Pin 4X20MM 1 926 AH25C 060 Roll Pin 4X30MM 1 927 GHB1236 927 Position Piece 1 928 JTS315 92 Phillips Pan Hd Mach Screw M4X50 2 9...

Страница 41: ...41 13 10 2 Motor and Change Gear Enclosure Exploded View ...

Страница 42: ...ew M8X30 2 1016 TS 1506031 Hex Socket Hd Cap Screw M12X30 2 1017 TS 2360121 Flat Washer M12 2 1018 TS 1492031 Hex Cap Screw M12X35 2 1019 TS 1505041 Hex Socket Hd Cap Screw M10X30 4 1020 ZX C34 Taper Pin 6X30MM 2 1021 VB A813 V Belt A813 2 1022 TS 1501021 Hex Socket Hd Cap Screw M4X8 8 1023 TS 1550031 Flat Washer M5 9 1024 TS 1550021 Flat Washer M4 6 1025 TS 2171012 Phillips Pan Hd Mach Screw M4X6...

Страница 43: ...43 13 11 1 Stand Brake Coolant Pump Exploded View ...

Страница 44: ...44 ...

Страница 45: ...S 1534042 Phillips Pan Hd Mach Screw M6X12 4 1127 TS 1550041 Flat Washer M6 4 1128 GHB1236 1128 Handle 2 1129 GHB1236 1129 Nut M16X1 5 1 1130 GHB1236 1130 Door Latch Assy 1 1131 GHB1236 1131 Brake Linkage Upper 1 1132 GHB1236 1132 Brake Linkage Middle 1 1133 GHB1236 1133 Brake Linkage Lower 1 1134 GHB1236 1134 Cover 2 1135 TS 1505041 Hex Socket Hd Cap Screw M10X30 1 1136 TS 1540071 Hex Nut M10 2 1...

Страница 46: ...46 13 12 1 Electrical Box Assembly Exploded View ...

Страница 47: ...ew M4X12 5 1213 GHB1236 1213 Graphic Plate Ground 1 1214 GHB1236 1214 Strain Relief M16X1 5 5 1215 GHB1236 1215 Mounting Plate 1 1216 GHB1236 1216 Strain Relief M20X1 5 2 1217 GHB1236 1217 DIN Rall Lower 1 1218 GHB1236 1218 Rail Clip 1 1220 GHB1236 1220 AC Contactor CJX2S 0901 24V 3 1222 GHB1236 1222 Contactor Relay JZC4 40 24V 1 1223 TS 1502031 Hex Socket Hd Cap Screw M5X12 4 1224 GHB1236 1224 Ra...

Страница 48: ...48 13 13 1 Steady Rest and Follow Rest Parts List ...

Страница 49: ...1540041 Hex Nut M6 3 1312 GHB1236 1312 Pivot Stud 1 1313 5217841 Roll Pin 4 20MM 1 1314 GB119 N6X20 Dowel Pin 6 20MM 1 1315 GHB1236 1315 Steady Rest Lower Body 1 1316 GHB1236 1316 Clamp Block 1 1317 GHB1236 1317 T Bolt M12X60 1 1318 TS 1540081 Hex Nut M12 1 1319 TS 2360121 Flat Washer M12 1 1401 TS 209203 Roll Pin 3X20MM 2 1402 GHB1236 1402 Pinned Knob 2 1403 GHB1236 1403 Collar 2 1404 GHB1236 140...

Страница 50: ...236 1508 Acrylic Sheet 1 1509 TS 1540011 Hex Nut M3 4 1510 TS 2361031 Lock Washer M3 4 1511 TS 1550011 Flat Washer M3 4 1512 F001156 Phillips Pan Hd Mach Screw M3X12 4 1515 F001216 Phillips Pan Hd Mach Screw M8X6 2 1516 GHB1236 1516 Handle 1 1601 GHB1236 1601 Left bracket 1 1602 TS 1502021 Hex Socket Hd Cap Screw M5 10 2 1603 GHB1236 1603 Spring cover 2 1604 GHB1236 1604 Left Collar 1 1605 TS 1503...

Страница 51: ...51 13 15 1 Accessories Exploded View ...

Страница 52: ...03 2 GHB1236 1703 2 Camlock Stud 3 1703 3 GHB1236 1703 3 Face Plate Body 1 1704 GHB1236 TBC Tool Box Complete 1 1705 GHB1236 1705 Key for Cam Locks 1 1706 GHB1236 1706 Oil Gun 1 1707 GHB1236 1707 Dead Center MT3 1 1708 GHB1236 1707 Dead Center MT3 1 1709 GHB1236 1709 Tapered Reducing Sleeve MT5 MT3 1 1710 JHL610 901 Hex Wrench 2MM 1 1711 TS 152704 Hex Wrench 3MM 1 1712 TS 152705 Hex Wrench 4MM 1 1...

Страница 53: ...53 14 0 Wiring Diagram for GHB 1236 ...

Страница 54: ...needed JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website More Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How State Law Applies This warra...

Страница 55: ...55 This page intentionally left blank ...

Страница 56: ...56 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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