JET GH-2280ZX, GH-1660ZX Operating Instructions and Parts Manual

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Operation and Maintenance Instructi ons

ZX-Series Large Bore Lathes

Models GH-1440ZX

GH-1640ZX/1660ZX GH-1860ZX/1880ZX GH-2280ZX

* For ZX-Series Lathes Parts List & Electrical Diagrams, see document M-321910-1

JET

Model GH-1440ZX shown

1.0 IMPORTANT SAFETY

INSTRUCTIONS

1. Read and understand the entire owner’s manual before attempting assembly or operation.

2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury.

3. Replace the warning labels if they become obscured or removed.

4. This lathe is 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.

5. Do not use this lathe for other than its intended use. If used for other purposes, JET disclaims any real or implied warranty and holds itself harmless from any injury that may result from that use.

6. Always wear approved safety glasses/face shields while using this lathe. Everyday eyeglasses only have impact resistant lenses; they are not safety glasses.

7. Before operating this lathe, remove tie, rings, watches and other jewelry, and roll sleeves up past the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid floor strips are recommended. Do not wear gloves.

8. Wear ear protectors (plugs or muffs) during extended periods of operation.

9. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.

10. Make certain the switch is in the OFF position before connecting the machine to the power supply.

11. Make certain the machine is properly grounded.

12. Make all machine adjustments or maintenance with the machine unplugged from the power source.

13. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting wrenches are removed from the machine before turning it on.

14. Keep safety guards in place at all times when the machine is in use. If removed for maintenance purposes, use extreme caution and replace the guards immediately.

15. Check damaged parts. Before further use of the machine, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced.

16. Provide for adequate space surrounding work area and non-glare, overhead lighting.

17. Keep the floor around the machine clean and free of scrap material, oil and grease.

18. Keep visitors a safe distance from the work area. Keep children away.

19. Make your workshop child proof with padlocks, master switches or by removing starter keys.

20. Give your work undivided attention. Looking around, carrying on a conversation and “horseplay” are careless acts that can result in serious injury.

21. Maintain a balanced stance at all times so that you do not fall or lean against moving parts. Do not overreach or use excessive force to perform any machine operation. Never force the cutting action.

22. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for which it was not designed. The right tool will do the job better and safer.

23. Use recommended accessories; improper accessories may be hazardous.

24. Maintain tools with care. Keep cutting tools sharp and clean for the best and safest performance. Follow instructions for lubricating and changing accessories.

25. Do not attempt to adjust or remove tools during operation.

26. Turn off the machine and disconnect from power before cleaning. Use a brush to remove shavings or debris — do not use your hands.

27. Do not stand on the machine. Serious injury could occur if the machine tips over.

28. Never leave the machine running unattended. Turn the power off and do not leave the machine until it comes to a complete stop.

29. Remove loose items and unnecessary work pieces from the area before starting the machine.

WARNING: This product can expose you to chemicals including lead and cadmium which are known to the State of California to cause cancer and phthalates which are known to the State of California to cause birth defects or other reproductive harm. For more information go to http://www.p65warnings. ca.gov.

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 injury or possibly even death.

WARNING: Some dust, fumes and gases created by power sanding, sawing, grinding, drilling, welding and other construction activities contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are:

• lead from lead based paint

• crystalline silica from bricks, cement and other

masonry products

• arsenic and chromium from chemically treated

lumber Your risk of exposure varies, depending on how often you do this type of work. To reduce your exposure to these chemicals, work in a wellventilated area and work with approved safety equipment, such as dust masks that are specifically designed to filter out microscopic particles. For more information go to http://www.p65warnings.ca.gov/ and http://www. p65warnings.ca.gov/wood.

2.0 Dimensions and mounting hole centers

Figure 1

3.0 Warranty and service

JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical 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. (See chart below)

• Accessories carry a limited warranty of one year from the date of receipt.

• Consumable items are defined as expendable parts or accessories expected to become inoperable within a

reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.

Who is Covered

This warranty covers only the initial purchaser of the product from the date of delivery.

What is Covered

This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear, improper repair, alterations or lack of maintenance.

Warranty Limitations

Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.

How to Get Technical Support Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof of initial purchase when calling. If a product requires further inspection, the Technical Service representative will

explain and assist with any additional action 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 warranty gives you specific legal rights, subject to applicable state law.

Limitations on This Warranty

JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. JET 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. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

JET sells through distributors only. The specifications listed in JET printed materials and on official JET website are given as general information and are not binding. JET reserves the right to effect at any time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever. JET

Product Listing with Warranty Period

90 Days – Parts; Consumable items 1 Year – Motors; Machine Accessories 2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used for industrial or commercial purposes 5 Year – Woodworking Machinery Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist Accessories; Shop Tools; Warehouse & Dock products; Hand Tools; Air Tools

NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries, Inc., or any of its successors in interest to the JET brand.

branded products are not sold in Canada by JPW Industries, Inc.

4.0 Table of Contents

1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2

2.0 Dimensions and mounting hole centers ......................................................................................................... 3

3.0 Warranty and service ..................................................................................................................................... 4

4.0 Table of Contents ........................................................................................................................................... 5

5.0 Specifications ................................................................................................................................................. 6

5.1 Specifications: 14-inch lathe ....................................................................................................................... 6

5.2 Specifications: 16-inch lathe ....................................................................................................................... 7

5.3 Specifications: 18-inch lathe ....................................................................................................................... 8

5.4 Specifications: 22-inch lathe ....................................................................................................................... 9

6.0 General Description and Nomenclature ....................................................................................................... 10

7.0 Unpacking .................................................................................................................................................... 12

7.1 Contents of shipping container ................................................................................................................. 12

8.0 Installation .................................................................................................................................................... 13

8.1 Leveling the lathe ..................................................................................................................................... 13

8.2 Completing installation ............................................................................................................................. 13

8.3 Chuck preparation (three-jaw) .................................................................................................................. 14

8.4 Break-in period ......................................................................................................................................... 14

9.0 Maintenance/Lubrication

10.0 Coolant preparation .................................................................................................................................... 16

11.0 Electrical connections ................................................................................................................................ 16

11.1 Conversion to 460 volt operation

12.0 Controls ...................................................................................................................................................... 17

13.0 Operation ................................................................................................................................................... 19

13.1 Tool setup ............................................................................................................................................... 20

13.2 Feed and thread selection ...................................................................................................................... 20

13.3 Thread cutting ........................................................................................................................................ 20

14.0 Adjustments ............................................................................................................................................... 20

14.1 Chuck jaw reversal ................................................................................................................................. 20

14.2 Gib adjustments ..................................................................................................................................... 21

14.3 Tailstock off-set ...................................................................................................................................... 21

14.4 Removing gap bridge ............................................................................................................................. 21

14.5 Installing gap bridge ............................................................................................................................... 22

14.6 Belt replacement/adjustment .................................................................................................................. 22

14.7 Aligning tailstock to headstock ............................................................................................................... 22

14.8 Cross slide nut adjustment ..................................................................................................................... 22

14.9 Shear pin replacement ........................................................................................................................... 22

14.10 Steady rest adjustment ......................................................................................................................... 22

14.11 Follow rest adjustment ......................................................................................................................... 23

14.12 Carriage stops ...................................................................................................................................... 23

15.0 Lubrication schedule and general maintenance ......................................................................................... 24

16.0 Reference tables ........................................................................................................................................ 25

16.1 Inch Lead And Feed ............................................................................................................................... 25

............................................................................................................................... 15

............................................................................................................. 17

Specifications were current at the time this manual was published, but because of our policy of continuous improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring obligations.

5.0 Specifications

5.1 Specifications: 14-inch lathe

Model Number ...................................................................................................................................... GH-1440ZX

Stock Number ............................................................................................................................................. 321910

Capacities:

Swing over Bed (in.) ............................................................................................................................................ 14

Swing over Cross Slide (in.) ............................................................................................................................ 7-5/8

Swing Through Gap (in.) ............................................................................................................................... 23-5/8

Length of Gap (in.) .............................................................................................................................................. 12

Distance between Centers (in.) ........................................................................................................................... 40

Headstock:

Spindle Bore (in.) ............................................................................................................................................ 3-1/8

Spindle Mount ................................................................................................................................................. D1-8

Spindle Taper with Sleeve ................................................................................................................... MT-7(MT-5)

Number of Spindle Speeds ................................................................................................................................. 12

Range of Spindle Speeds (RPM) ........................................................................................................... 42 to 1800

Gearbox:

Number of Longitudinal and Cross Feeds ...................................................................................................... 46/31

Range of Longitudinal Feeds (in./rev.) ......................................................................................... 0.0015 to 0.0900

Range of Cross Feeds (in./rev.) ................................................................................................... 0.0010 to 0.0360

Number of Inch Threads ..................................................................................................................................... 61

Range of Inch Threads (in.) ................................................................................................................... 1-5/8 to 72

Number of Metric Threads .................................................................................................................................. 24

Range of Metric Threads (mm) ............................................................................................................ 0.50 to 20.0

Number of Diametral Threads ............................................................................................................................. 45

Range of Diametral Threads ............................................................................................................. 3-1/4 – 96DP

Number of Module Threads ............................................................................................................................... 20

Range of Module Threads .................................................................................................................. 0.25 – 10MP

Compound and Carriage:

Maximum Compound Slide Travel (in.) ........................................................................................................... 5-1/8

Maximum Cross Slide Travel (in.) ......................................................................................................................... 9

Carriage Travel (in.) ............................................................................................................................................ 36

Tailstock:

Tailstock Spindle Travel (in.) ................................................................................................................................. 6

Tailstock Taper ................................................................................................................................................ MT-4

Steady Rest Capacity (in.) .......................................................................................................................... 3/8 to 7

Follow Rest Capacity (in.) ..................................................................................................................... 1/2 to 3-1/2

Width of Bed (in.) .......................................................................................................................................... 13-1/8

Overall Dimensions (in.)(LxWxH) ................................................................................ 91-5/16 x 41-5/16 x 50-5/16

Motor ..................................................................................................... 7-1/2HP, 3PH, 230/460V (prewired 230V)

Approximate Net Weight (lbs.) ........................................................................................................................ 4667

5.2 Specifications: 16-inch lathe

Model Number ............................................................................... GH-1640ZX................................... GH-1660ZX

Stock Number .......................................................................................321930.......................................... 321940

Capacities:

Swing over Bed (in.) ......................................................................................16.................................................. 16

Swing over Cross Slide (in.) ..........................................................................10.................................................. 10

Swing Through Gap (in.) ...............................................................................25.................................................. 25

Length of Gap (in.) ........................................................................................12.................................................. 12

Distance between Centers (in.) .....................................................................40.................................................. 60

Headstock:

Spindle Bore (in.) ..................................................................................... 3-1/8.............................................. 3-1/8

Spindle Mount ........................................................................................... D1-8.............................................. D1-8

Spindle Taper with Sleeve ............................................................ MT-7(MT-5)................................... MT-7(MT-5)

Number of Spindle Speeds ...........................................................................12.................................................. 12

Range of Spindle Speeds (RPM) .....................................................25 to 1800..................................... 25 to 1800

Gearbox:

Number of Longitudinal and Cross Feeds ................................................46/31............................................. 46/31

Range of Longitudinal Feeds (in./rev.) ...................................0.0015 to 0.0900........................... 0.0015 to 0.0900

Range of Cross Feeds (in./rev.) .............................................0.0010 to 0.0360........................... 0.0010 to 0.0360

Number of Inch Threads ...............................................................................61.................................................. 61

Range of Inch Threads (in.) ............................................................ 1-5/8 to 72..................................... 1-5/8 to 72

Number of Metric Threads ............................................................................24.................................................. 24

Range of Metric Threads (mm) ......................................................0.50 to 20.0................................... 0.50 to 20.0

Number of Diametral Threads .......................................................................45.................................................. 45

Range of Diametral Threads ....................................................... 3-1/4 – 96DP................................. 3-1/4 – 96DP

Number of Module Threads ..........................................................................20.................................................. 20

Range of Module Threads ............................................................ 0.25 – 10MP .................................. 0.25 – 10MP

Compound and Carriage:

Maximum Compound Slide Travel (in.) .................................................... 5-1/8.............................................. 5-1/8

Maximum Cross Slide Travel (in.) ...................................................................9.................................................... 9

Carriage Travel (in.) ......................................................................................36.................................................. 55

Tailstock:

Tailstock Spindle Travel (in.) ...........................................................................6.................................................... 6

Tailstock Taper ......................................................................................... MT-4.............................................. MT-4

Steady Rest Capacity (in.) ....................................................................3/8 to 7.......................................... 3/8 to 7

Follow Rest Capacity (in.) .............................................................. 1/2 to 3-1/2.................................... 1/2 to 3-1/2

Width of Bed (in.) ................................................................................... 13-1/8............................................ 13-1/8

Overall Dimensions (in.)(LxWxH) .......................... 91-5/16 x 41-5/16 x 50-5/8.......... 111-3/8 x 41-5/16 x 50-5/8

Motor ........................................................................ 7-1/2HP, 3Ph, 230/460V*.............. 7-1/2HP, 3Ph, 230/460V*

Approximate Net Weight (lbs.) ..................................................................4689.............................................. 5218

*pre-wired 230V

5.3 Specifications: 18-inch lathe

Model Number ............................................................................... GH-1860ZX................................... GH-1880ZX

Stock Number .......................................................................................321960.......................................... 321970

Capacities:

Swing over Bed (in.) ......................................................................................18.................................................. 18

Swing over Cross Slide (in.) ..........................................................................11.................................................. 11

Swing Through Gap (in.) ...............................................................................27.................................................. 27

Length of Gap (in.) ........................................................................................12.................................................. 12

Distance between Centers (in.) .....................................................................60.................................................. 80