This .pdf document is bookmarked Operation and Maintenance Instructions Geared Head Bench Lathe Models GHB-1340A, GHB-1440A (GHB-1340A shown with optional stand 321443AK) For Parts List and Electrical Diagrams, see document M-321357A JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
14. Make the workshop child proof. Use padlocks, master switches, and remove starter keys. 1.0 IMPORTANT SAFETY INSTRUCTIONS 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 type of glove. Read and understand the entire owner's manual before attempting set-up or operation of this lathe. 16. Always use safety glasses.
Familiarize yourself with the following safety notices used in this manual: This means that if precautions are not heeded, it may result in minor injury and/or possible machine damage. This means that if precautions are not heeded, it may result in serious, or possibly even fatal, injury. 2.0 Table of contents Section Page 1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2 2.0 Table of contents ......................
3.0 Warranty and service JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contactTechnical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday. Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website. • JET products carry a limited warranty which varies in duration based upon the product.
4.0 About this manual This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model GHB-1340A and GHB-1440A Lathe. This manual contains instructions on installation, safety precautions, general operating procedures, and maintenance instructions. Your machine has been designed and constructed to provide consistent, long-term operation if used in accordance with the instructions as set forth in this document.
.0 Specifications Stock Number ............................................................................... 321357A............................................ 321359A Model Number .......................................................................... GHB-1340A ....................................... GHB-1440A Capacities: Swing Over Bed ..................................................................................... 13"...............................................
.0 Setup and assembly 7.1 Shipping contents See Figure 2. 1 1 1 1 1 1 3 3 1 1 1 1 2 Lathe Steady Rest (mounted on lathe) Follow Rest (mounted on lathe) 6" Three Jaw Chuck (mounted on lathe) 8" Four Jaw Chuck 12" Face Plate (strapped to container) Cam Locks Socket Head Cap Screws Tool Box (strapped to container) Chip Tray Splash Guard Lifting Hook Lifting Blocks Tool Box: 3 Open End Wrenches (9/11, 10/12,12/14mm) 1 Touch-Up Paint 1 Oil Can 1 Hex Key Set (2, 2.
7.2 Uncrating and Cleanup mounting bolts, shim, and tighten mounting bolts, if necessary. The lathe must be level to be accurate. Machine is heavy. Use an appropriate lifting device and use extreme caution when moving the machine to its final location. Failure to comply may cause serious injury. 1. Finish removing the wooden crate from around the lathe. 2. Unbolt the lathe from the shipping crate bottom. 3.
7.4 Chuck Guard Installation Install the chuck guard to the headstock, if it is not already mounted. (See parts breakdown if clarification is needed for assembly.) 8.0 Lubrication Lathe must be serviced at all lubrication points and all reservoirs filled to operating level before the lathe is placed into service. Failure to comply may cause serious damage to the lathe. 1. Headstock - Oil must be up to indicator mark in oil sight glass (A, Fig. 5). Top off with Mobil DTE® Oil Heavy Medium.
9. Compound Rest - Lubricate three ball oilers (F, Fig. 8) once daily with Mobil DTE® Oil Heavy Medium. to comply may cause serious injury and/or damage to the machinery and property. The GHB-1340A and GHB-1440A bench lathes are rated at 2HP, 1PH, 230V only. Confirm power available at the lathe's location is the same rating as the lathe. 10. Cross Slide - lubricate four ball oilers (G, Fig. 8) once daily with Mobil DTE® Oil Heavy Medium. Make sure the lathe is properly grounded. 11.
used for tuning operations on long, slender workpieces. It prevents flexing of the workpiece from the pressure of the cutting tool. use a minimum of two clamping screws when installing a cutting tool. The sliding fingers are set similar to the steady rest, free of play, but not binding. The sliding fingers require continuous lubrication at the contact points with the workpiece to prevent premature wear. 11.0 Controls Figure 11 10.5 Apron The apron (A, Fig. 11) is mounted to the carriage.
24. Tailstock Off-Set Adjustment (K, Fig. 15) – Three set screws located on the tailstock base are used to off-set the tailstock for cutting tapers. Loosen lock screw on tailstock end. Loosen one side set screw (K, Fig. 15) while tightening the other until the amount of off-set is indicated on scale. Tighten lock screw. position is a center detent and the spindle remains idle. 10. Compound Rest Lock (J, Fig. 13) - Turn hex nut clockwise to lock and counter-clockwise to unlock. 11.
gears too tight will cause excessive noise and wear. 12.0 Operation 7. 12.1 Break-In Procedure Close the cover and connect the machine to the power source. During manufacturing and testing, this lathe has been operated in the low R.P.M. range for three hours. To allow time for the gears and bearings to breakin and run smoothly, do not run the lathe above 755 R.P.M. for the first six hours of operation and use. 12.2 Feed and Thread Selection 1. Reference the feed and thread table (A, Fig. 16). 2.
5. Move the carriage again and adjust if necessary. Note: over adjustment will cause excessive premature wear of the gibs. Figure 19 Figure 20 12.5 Powered Carriage Travel 13.2 Cross Slide adjustment Push lever (D, Fig. 18) to the left and down to engage crossfeed. Pull lever to the right and up to engage longitudinal feed. If the cross slide is too loose, follow procedure below to tighten: 1. Loosen the rear gib screw (C, Fig. 20) approximately one turn. 12.6 Thread Cutting 1.
that hold the headstock to the bed. Do not loosen completely; some drag should remain. 13.5 Half Nut Gib adjustment 1. Remove the thread dial assembly unscrewing the screw (D, Fig. 21). by 2. Loosen three hex nuts (E, Fig. 21) found on the side of apron, and turn three set screws (F, Fig. 21) equally with a hex wrench. 3. Adjust properly for wear and play. Hold socket set screw firmly with a hex wrench and tighten hex nut to lock in place.
14.0 Thread and Feed Chart FEED IN/REV 3+ 32 TRANSVERSE LONGITUDINAL LEVER POSITIONS 0.0018 A 0.0073 A 0.0006 A 0.0025 A 0.0020 E 0.0081 E 0.0007 E 0.0028 E 0.0030 B 0.0122 B 0.0010 B 0.0042 B 0.0033 C 0.0133 C 0.0011 C 0.0046 C 0.0035 D 0.0139 D 0.0012 D 0.0048 D 0.0037 A 0.0146 A 0.0013 A 0.0050 A 0.0041 E 0.0162 E 0.0014 E 0.0056 E 0.0061 B 0.0244 B 0.0021 B 0.0084 B 0.0066 C 0.0266 C 0.0023 C 0.0091 0.0070 D 0.0278 D 0.
THREADING CHART 32 127 120 48 ATTENTION Red circles represent stacked gears IN T.P.
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427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
This .pdf document is bookmarked Parts List and Electrical Diagrams For Lathe models BDB-1340A, GHB-1340A, GHB-1440A (GHB-1340A shown) For GHB-1340A/1440A Operating Instructions, see document M-321357A-1 For BDB-1340A Operating Instructions, see document M-321360A JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph : 800-274-6848 www.jettools.com Part No.
Table of contents Section Page ······················ Table of contents ·································································································· 2 ······················ Replacement parts ········································································································ 3 1.0 ·················· BDB-1340A Headstock Assembly I – Exploded View···························································· 4 1.
Replacement parts To order parts or reach our service department , call1-800-274-6848 Monday through Friday (see our website for business hours , www.jettools.
1.
1.1 BDB-1340A Headstock Assembly I – Parts List Index No Part No Description Size Qty 1 .............. 04101BG .................. Headstock Casting ................................................... ...................................... 1 10 ............ TS-1482021 .............. Hex Socket Cap Screw ........................................... M6x12 ........................... 4 11 ............ 04501A ..................... Inlet Plug ..................................................................
1.
2.
2.2 BDB-1340A Headstock Assembly II – Parts List Index No Part No Description Size Qty 2 .............. TS-1503051 .............. Hex Socket Cap Screw .......................................... M6x22 ........................... 4 3 .............. BB-30212 .................. Taper Roller Bearing .............................................. 60x110x22 .................... 1 4 .............. BDB1340-H4 ............. Oil Seal ................................................................... PG60x80x12 .
3.
3.2 BDB-1340A Headstock Assembly III – Parts List Index No Part No Description Size Qty 8 ..............TS-1524021............... Set Screw................................................................. M8x10 ........................... 1 15-1 .........TS-1540061............... Nut ........................................................................... M8 ................................. 1 44 ............04704 ........................ Eccentric Shaft .............................................
4.
4.2 GHB-1340A/1440A Headstock Assembly I – Parts List Index No Part No Description Size Qty 7 ..............GHB1340A-02101G .. Gear Box Main Casting (GHB-1340A only) ............ ...................................... 1 ................GHB1440A-02101G .. Gear Box Main Casting (GHB-1440A only) ............ ...................................... 1 9 ..............04109 ........................ Shift Lever ................................................................ ...................................
4.2 GHB-1340A/1440A Headstock Assembly I – Parts List Index No Part No Description Size Qty ................LM000209 ................. Headstock Label (GHB-1340A only)（serial #16043259A and higher） ........ 1 ................GHB1440A-02301-15 Headstock Label (GHB-1440A only)（serial #16013258A and lower） ......... 1 ................LM000212 ................. Headstock Label (GHB-1440A only)（serial #16043259A and higher） ........ 1 155 .........GHB1340A-155 ......... Screw（serial #16013258A and lower） ..
5.
5.2 GHB-1340A/1440A Headstock Assembly II – Parts List Index No Part No Description Size Qty 4 ..............04104Z ...................... Rear Cover ............................................................... ...................................... 1 5 ..............04105 ........................ Pulley ....................................................................... ...................................... 1 6 ..............GHB1340-4106 ......... Plug .........................................
6.
6.2 GHB-1340A/1440A Headstock Assembly III – Parts List Index No Part No Description Size Qty 1 ..............GHB1340A-02103N... Collar ........................................................................ ...................................... 1 2 .............04102 ........................ Collar (serial #07061677A and lower) ...................... ...................................... 1 ................C0632A-02117A ........ Collar (serial #07061678A and higher) .................... ............
7.
7.2 Bed Assembly I – Parts List Index No Part No Description Size Qty 1 ..............GHB1340A-01101G .. Bed........................................................................... ...................................... 1 2 ..............GHB1340-MPG ......... Motor Base (For GHB) ............................................. ...................................... 1 ................BDB1340-MPG.......... Motor Base (For BDB) ............................................. ...............................
7.2 Bed Assembly I – Parts List Index No Part No Description Size Qty 50 ............TS-1502021 .............. Socket Head Cap Screw.......................................... M5x10 ........................... 4 51 ............TS-1503061............... Hex Socket Cap Screw ............................................ M6x25 ........................... 8 53 ............TS-1540061............... Hex Nut .................................................................... M8 ................................
8.
8.2 Bed Assembly II – Parts List Index No Part No Description Size Qty 52 ............GHB1340A-18701G .. Electrical Box (For GHB) ......................................... GHB-1340A ................... 1 ................BDB1340A-18701G... Electrical Box (For BDB) .......................................... BDB-1340A ................... 1 55 ............GHB1340A-55B ......... Screw ....................................................................... M6x20 ........................... 4 56 ............
9.
9.2 Gear Assembly I – Parts List Index No Part No Description Size Qty 1 ..............05101AG ................... Casting ..................................................................... ...................................... 1 2 ..............05715G...................... Right cover ............................................................... ..................................... 1 3 ..............05720G...................... Left cover ........................................................
9.2 Gear Assembly I – Parts List Index No Part No Description Size Qty 116 ..........05304......................... Sign Disc（serial #16013258A and lower） ............ ...................................... 1 ................GHB1340A-05304-2 .. Sign Disc（serial #16043259A and higher） ........... ...................................... 1 117 .........GHB1340A-G117 ...... Oil Sight Glass（GHB-1340A，serial #10052363A and lower）.12mm ........ 1 ................GHB1340A-G117 ......
10.
10.2 Gear Assembly II – Parts List Index No Part No Description Size Qty 21 ............32A5113 .................... Cover ....................................................................... ...................................... 1 22 ............32A5503 .................... Gasket ...................................................................... ..................................... 1 23 ............32A5712 .................... Shaft............................................................
11.
11.2 Gear Assembly III – Parts List Index No Part No Description Size Qty 21 ............ 32A5113 ................... Cover ....................................................................... ...................................... 1 22 ............ 32A5503 ................... Gasket ..................................................................... ...................................... 1 50 ............ 32A5115 ................... End Cover.......................................................
12.
12.2 Apron Assembly I – Parts List Index No Part No Description Size Qty 1 ..............GHB1340A-06101AG Casting ..................................................................... ...................................... 1 3 ..............06103G...................... Housing .................................................................... ..................................... 1 4 ..............06104G...................... Cover .....................................................................
13.
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14.1 Apron Assembly III – Exploded View 14.2 Apron Assembly III – Parts List Index No Part No Description Size Qty 5 .............. Z06105G ................... Threading Dial Body ................................................ ..................................... 1 6 .............. 06206 ........................ Washer .................................................................... ...................................... 1 35 ............ 06233 ........................ Threading Dial Shaft ....
15.1 Micro Carriage Stop Assembly – Exploded View 15.2 Micro Carriage Stop Assembly – Parts List Index No Part No Description Size Qty 1 ..............GHB1340A-01707 ..... Dial ........................................................................... ...................................... 1 2 ..............GHB1340A-MS02...... Pin ............................................................................ B3x6 ................................. 1 3 ..............GHB1340A-01716 ..... Axle ............
16.
16.2 Top Slide, Tool Post, Saddle, and Cross Slide I – Parts List Index No Part No Description Size Qty 3 .............. 07103 ........................ Swivel Slide (For GHB-1340A/BDB-1340A) ............ ...................................... 1 ................ C0636A-04103 .......... Swivel Slide (GHB-1440A Only) .............................. ...................................... 1 4 .............. 07104 ........................ Top Slide (For GHB-1340A/BDB-1340A) ................ ..................
17.
17.2 Top Slide, Tool Post, Saddle, and Cross Slide II – Parts List Index No Part No Description Size Qty 1 .............07101 ......................... Slide（GHB-1340A，serial #07061685A and lower） ................................... 1 （BDB-1340A，serial #0706B0764A and lower） ................................ 1 ................GHB-1340A-04101A .. Slide（GHB-1340A，serial #07061686A and higher）.................................. 1 （BDB-1340A，serial #0707B0765A and higher） ...............................
17.2 Top Slide, Tool Post, Saddle, and Cross Slide II – Parts List Index No Part No Description Size Qty 84 ............GHB1340-84 ............. Taper Pin ................................................................. 8x40 .............................. 2 85 ............GHB1340-85 ............. Hex Socket Cap Screw ............................................ M8x50 ........................... 1 86 ............GHB1340-86 ............. Locking Washer ...................................................
18.
18.2 Tailstock Assembly I – Parts List Index No Part No Description Size Qty 1 ..............Z08101G ................... Casting ..................................................................... ...................................... 1 2 ..............Z08102G ................... Flange Cover............................................................ ...................................... 1 3 ..............08103G...................... Hand Wheel .....................................................
19.1 Tailstock Assembly II – Exploded View 19.2 Tailstock Assembly II – Parts List Index Part No No Description Size Qty 4 .............. 08104 ........................ Clamp Plate ............................................................. ...................................... 1 5 .............. 08105G ..................... Base (For GHB-1340A/BDB-1340A) ....................... ...................................... 1 ................ C0636A-03104G ....... Base (For GHB-1440A) .........................
20.1 Follow Rest – Exploded View 20.2 Follow Rest – Parts List Index No Part No Description Size Qty 1 ..............GHB1340-1FR........... Knob ......................................................................... ...................................... 2 2 ..............GHB1340-2FR........... Pin ............................................................................ 3x18 .............................. 2 3 ..............10208 ........................ Bushing .................................
21.
21.2 Steady Rest – Parts List Index No Part No Description Size Qty 1 .............. GHB1340-1FR .......... Knob ........................................................................ ...................................... 3 2 .............. GHB1340-2FR .......... Pin ........................................................................... 3x18 .............................. 3 3 .............. 10203 ........................ Bushing ..................................................................
22.1 GHB-1340A/1440A Chuck Guard Assembly – Exploded View 22.2 GHB-1340A/1440A Chuck Guard Assembly – Parts List Index No Part No Description Size Qty ................ GHB-CGA ................. Chuck Guard Assembly（index #1 thru 21） .......... ...................................... 1 1 .............. GHB1340A-19701EG Protection Guard...................................................... ...................................... 1 2 ............ GHB1340A-19501E... Protection Guard Visual Glass ...........
23.
25.1 Electrical Schematic – GHB-1340A/1440A 25.
26.1 Electrical Schematic – BDB-1340A 26.2 Electrical Schematic Parts List – BDB-1340A Index No Part No Description Size Qty 1 ··········BDB-SB1 ················ Emergency Stop ···························· ZB2-BS54C ······················· 1 2 ··········BDB-KA1 ················ Relay ·········································· JZC3-40d ·························· 1 3 ··········BDB-KM1 ··············· A.C.
27.0 GHB-1340A/1440A Wiring Photo 28.
