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OWNER’S MANUAL
GH-1340W/1440W Lathes
JET EQUIPMENT & TOOLS, INC. P.O. BOX 1349 253-351-6000
A WMH Company Auburn, WA 98071-1349 Fax 253-939-8001
www.jettools.com e-mail jet@jettools.com M-321810 6/00
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Important Information 1-YEAR JET offers a one-year limited LIMITED WARRANTY warranty on this product REPLACEMENT PARTS Replacement parts for this tool are available directly form JET Equipment & Tools. To place an order, call 1-800-274-6848. Please have the following information ready: 1. Visa, MasterCard, or Discover Card number 2. Expiration date 3. Part number listed within this manual 4. Shipping address other than a Post Office box. REPLACEMENT PART WARRANTY JET Equipment & Tools makes ever
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WARNING • Read and understand the entire instruction manual before attempting assembly or operation. • These lathes are designed and intended for use by properly trained and experienced personnel only. If you are not familiar with the proper and safe operation of a lathe, do not use until proper training and knowledge have been obtained. • Always wear approved safety glasses/face shields while using this machine. • Make certain the machine is properly grounded. • Before operating the machine,
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Specifications: GH-1340W/1440W Stock Number.............................................................................................. 321810 GH-1340W-1 Stock Number.............................................................................................. 321820 GH-1340W-3 Stock Number.............................................................................................. 321830 GH-1440W-1 Stock Number..................................................................................
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Miscellaneous: Steady Rest Capacity ................................................................................................. 1/4" - 3-3/4" Follow Rest Capacity ................................................................................................. 1/4" - 2-3/4" Length of Bed.................................................................................................................... 54-1/2" Width of Bed.....................................................................
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WARNING Read and understand the entire contents of this manual before attempting set-up or operation! Failure to comply may cause serious injury! Contents of the Shipping Container 1 Lathe 1 Steady Rest 1 Follow Rest 1 6" Three Jaw Chuck w/ Top Reversing Jaws (Direct Mount) 1 8" Four Jaw Chuck with Backplate 1 12" Face Plate (strapped to container floor) 1 Backplate 1 Tool Box Tool Box Contents: 1 No. 1 Cross Point Screwdriver 1 No. 1 Flat Blade Screwdriver 4 Open End Wrench (9-11, 10-12, 12-1
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Uncrating and Clean-Up 1. Finish removing the wooden crate from around the lathe. 2. Unbolt the lathe from the shipping crate bottom. 3. Choose a location for the lathe that is dry, has good lighting, and has enough room to be able to service the lathe on all four sides. 4. Place two steel rods or pipes (of sufficient strength) into four holes (A, Fig. 1) of lathe stand. Sling the lathe with properly rated straps. Do not lift by spindle. With adequate lifting equipment, slowly raise the lathe of
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Chuck Preparation (Three Jaw) WARNING Read and understand all directions for chuck preparation! Failure to comply may cause serious injury and/or damage to the lathe! Note: Before removing the chuck from the spindle, place a way board across the bedways under the chuck 1. Support the chuck while turning three camlocks 1/4 turn counter-clockwise with the chuck key enclosed in the tool box. 2. Carefully remove the chuck from the spindle and place on an adequate work surface. 3. Inspect the camlo
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Lubrication CAUTION Lathe must be serviced at all lubrication points and all reservoirs filled to operating level before the lathe is put 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. 3). Top off with Mobil DTE Oil Heavy Medium. Fill by pulling plug (D, Fig. 3). To drain, remove drain plug (A, Fig. 4) with an 8mm hex wrench. Drain oil completely and refill after the first month of operation. C
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3. Apron - oil must be up to indicator mark in oil sight glass (A, Fig. 6). Top off with Mobil DTE Oil Heavy Medium. Remove oil cap (B, Fig. 6) on top of apron to fill. To drain, remove drain plug on bottom of apron. Drain oil completely and refill after the first month of operation. Then, change oil in the apron annually. 4. Leadscrew Feed Rod - lubricate ball oiler (A, Fig. 7) on leadscrew/feed rod bracket with Mobil DTE Oil Heavy Medium once daily. 5. Tailstock - lubricate two ball oilers (
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Coolant Preparation CAUTION Follow coolant manufacturer's recommendations for use, care, and disposal. 1. Remove rear access cover on tailstock end. Make sure coolant tank has not shifted during transport and is located properly under the recovery chute (Fig. 9). 2. Pour three gallons of coolant mix into drip pan. 3. After machine has been connected to power, turn on coolant pump and check to see coolant is cycling properly. 4. Fasten coolant door to stand. Electrical Connections WARNING All
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Make sure the lathe is properly grounded. Power is connected properly when pulling up on the forward-reverse lever causes the spindle to rotate counter-clockwise as viewed from the tailstock. If the chuck rotates in the clockwise direction, disconnect the lathe from the power source, switch two of three power leads (for GH-1340W-3 & GH1440W-3), and connect the lathe to the power source. To Switch from 230V to 460V Operation GH-1340W-3 & GH1440W-3 Only WARNING Disconnect the machine from the po
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General Description Lathe Bed The lathe bed (A, Fig. 10) 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 vee slideways, reinforced by heat hardening and grinding, are an accurate guide for the carriage and headstock. The main drive motor is mounted in the stand below headstock. Headstock The headstock (B, Fig. 10) is cast from high grade, low vibration cast iron. It is bolted to the bed
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Tailstock The tailstock (A, Fig. 12) slides on a v-way and can be locked at any location by a clamping lever. The tailstock has a heavy duty spindle with a Morse Taper #3. Leadscrew and Feed Rod The leadscrew (B Fig. 12) and feed rod (C, Fig. 12) are mounted on the front of the machine bed. They are connected to the gearbox at the left for automatic feed and lead, and are supported by bushings on both ends. Both are equipped with brass shear pins. Gear Box The gear box (D, Fig. 12) is made from
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Follow Rest The traveling follow rest (F, Fig. 12) is mounted on the saddle and follows the movement of the turning tool. Only two fingers are required as the place of the third is taken by the turning tool. The follow rest is used for tuning operations on long, slender workpieces. It prevents flexing of the workpiece from the pressure of the cutting tool. The sliding fingers are set similar to the steady rest, free of play, but not binding. Always lubricate with Mobil DTE Oil Heavy Medium. Con
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5. Feed/Lead Selector Lever (H,Fig.13) - located on the front of the gearbox. Used in setting up for feeding and threading. Positions "F" and "D" are for the feed rod. Positions "E" and "C" are for the feed screw. Position "0" is neutral. 6. Lock Knob (I, Fig. 13) - located on the front of the gearbox. With the knob in the six o'clock position, feed/lead selector knob (J, Fig. 13) may be adjusted. With the knob in the twelve o'clock position, the feed/lead selector knob (J, Fig. 13) is locked. 7
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15. Tool Post Clamping Lever (J,Fig.14) - located on top of the tool post. Rotate counter-clockwise to loosen and clockwise to tighten. 16. Tailstock Quill Clamping Lever (A, Fig. 15) - located on the tailstock. Lift up to lock the spindle. Push down to unlock. 17. Tailstock Clamping Lever (B,Fig.15) - located on the tailstock. Lift up lever to lock. Push down lever to unlock. 18. Tailstock Quill Traverse Handwheel (C, Fig. 15) - located on the tailstock. Rotate clockwise to advance the quill. R
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Operation Feed and Thread Selection 1. Reference the feed and thread found on the gear box faceplate tables (A, Fig. 17 & page 22 of manual). 2. Move levers (B, C, D, E & F, Fig. 17) to the appropriate positions according to the chart. Change Gears Replacement The 25T, 127T, 50T gears are installed in the end gear compartment when delivered from the factory. This combination will cover most inch feeds and threads under normal circumstances. The 30T, 32T, and two 40T gears found in the tool box a
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Automatic Feed Operation and Feed Changes 1. Move the forward/reverse selector (A, Fig. 19) up or down depending on desired direction. 2. Set selector levers (A, B, C, & D, Fig. 20) to desired rate. Note: for feeding, lever (D) will be set at "F" or "D", depending on desired feed rate. Powered Carriage Travel 1. Push lever (B, Fig. 19) to the left and down to engage crossfeed. 2. Pull lever to the right and up to engage longitudinal feed. Thread Cutting 1. Set forward/reverse lever (A, Fig. 19)
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Metric Thread Table Inch Lead and Feed Table Cross Feed Table 20
