Jet Elite 1700 Series Service manual

Operating Instructions and Parts Manual
1700 Series Lathe
Models: EGH-1740 | EGH-1760
JET®
427 New Sanford Road
LaVergne, Tennessee 37086
www.jettools.com
Ph.: 855-336-4032
Part No. M-EGH-1740
REV C2 07/2020
Copyright © 2015 JET
This .pdf document is bookmarked

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1700 Series Lathe
1.0 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 1-855-336-4032, 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, jettools.com.
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.
HOW TO GET TECHNICAL SUPPORT
Please contact Technical Service by calling 1-855-336-4032. 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 1-855-336-4032 or use the Service Center Locator on the JET website.

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EGH1740 | EGH1760
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, jettools.com.
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® branded
products are not sold in Canada by JPW Industries, Inc.
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.

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1700 Series Lathe
2.0 TABLE OF CONTENTS
1.0 WARRANTY AND SERVICE ........................................................................................................................................2
2.0 TABLE OF CONTENTS ................................................................................................................................................4
3.0 SAFETY PRECAUTIONS ............................................................................................................................................5
4.0 INTRODUCTION ..........................................................................................................................................................6
5.0 SPECIFICATIONS ........................................................................................................................................................7
6.0 GENERAL INSTRUCTION ...........................................................................................................................................8
6.1 GENERAL LAYOUT OF LATHE ...............................................................................................................................8
6.2 FOUNDATION PLAN................................................................................................................................................9
6.3 MOVING THE MACHINE WITH A FORKLIFT ......................................................................................................10
7.0 INSTALLATION ...........................................................................................................................................................11
7.1 LEVELING THE LATHE .........................................................................................................................................11
7.2 CHUCK PREPARATION ........................................................................................................................................12
7.3 CHUCK AND CHUCK MOUNTING (FOR D1-6 SPINDLE) .................................................................................13
7.4 LUBRICATION CHECKS .......................................................................................................................................13
7.5 COMPLETING INSTALLATION .............................................................................................................................14
7.6 BREAK-IN PERIOD ................................................................................................................................................14
8.0 ELECTRICAL CONNECTIONS .................................................................................................................................14
9.0 OPERATION ...............................................................................................................................................................14
9.1 LATHE CONTROLS ...............................................................................................................................................14
9.2 ELECTRICAL CONTROL PANEL .........................................................................................................................15
9.3 HEADSTOCK SELECTORS ..................................................................................................................................15
9.4 THREADS AND FEEDS .........................................................................................................................................15
9.5 APRON CONTROLS ..............................................................................................................................................16
9.6 THREADING DIAL INDICATOR ............................................................................................................................17
9.7 CROSS SLIDE AND TOP SLIDE ..........................................................................................................................17
9.8 TAILSTOCK ............................................................................................................................................................18
9.9 END GEAR TRAIN .................................................................................................................................................18
9.10 DRIVING BELTS ...................................................................................................................................................18
10.0 RECOMMENDED CUTTING SPEED OF LATHE ..................................................................................................20
11.0 REPLACEMENT PARTS ..........................................................................................................................................20
12.0 WIRING DIAGRAM ....................................................................................................................................................68
WARNING: This product can expose you to chemicals including lead and cadmium which are known to the State of California to
cause cancer and birth defects or other reproductive harm. For more information go to http://www.p65warnings.ca.gov.
WARNING: Some dust, fumes and gases created by power sanding, sawing, grinding, drilling, welding and other construction ac-
tivities 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
well-ventilated area and work with approved safety equipment, such as dust masks that are specifically designed to filter out microscop-
ic particles. For more information go to http://www.p65warnings.ca.gov/ and http://www.p65warnings.ca.gov/wood.

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EGH1740 | EGH1760
3.0 SAFETY PRECAUTIONS
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. Some dust created by power sanding, sawing, grinding, drilling and other construction activities contain chemicals
known to the state of California to cause cancer, 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 well-ventilated area and work with approved safety equipment, such as face or dust masks that
are specifically designed to filter out microscopic particles.
10. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
11. Make certain the switch is in the OFF position before connecting the machine to the power supply.
12. Make certain the machine is properly grounded.
13. Make all machine adjustments or maintenance with the machine unplugged from the power source.
14. 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.
15. 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 after maintenance is complete.
16. 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.
17. Do not use power tools in damp/wet locations or other dangerous environments. Do not expose them to rain. Keep
work area well lighted. Provide for adequate space surrounding work area and non-glare, overhead lighting.
18. Keep the floor around the machine clean and free of scrap material, oil and grease.
19. Keep visitors a safe distance from the work area. Keep children away.
20. Make your workshop child proof with padlocks, master switches or by removing starter keys.
21. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts
that can result in serious injury.
22. 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.
23. Do not operate the lathe in flammable or explosive environments. Do not use in a damp environment or expose to
rain.

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1700 Series Lathe
4.0 INTRODUCTION
This manual is provided by JET® covering the safe operation and maintenance procedures for a JET Model EGH-1740
and EGH-1760. This manual contains instructions on installation, safety precautions, general operating procedures,
maintenance instructions and parts breakdown. Your machine has been designed and constructed to provide years of
trouble-free operation if used in accordance with the instructions as set forth in this document.
If there are questions or comments, please contact your local supplier or JET. JET 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 accom-
pany it.
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.
24. 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 more safely.
25. Use recommended accessories; improper accessories may be hazardous.
26. Maintain tools with care. Keep cutting tools sharp and clean for the best and safest performance. Follow instructions
for lubricating and changing accessories.
27. Do not attempt to adjust or remove tools during operation. Disconnect tools before servicing; when changing
accessories, such as blades, bits, cutters, and the like.
28. Never stop a rotating chuck or workpiece with your hands.
29. Choose a low spindle speed when working unbalanced workpieces, and for threading and tapping operations.
30. Do not exceed the maximum speed of the workholding device.
31. Do not exceed the clamping capacity of the chuck.
32. Secure Work. For safety and use of both hands, use clamps or a vise to hold work when practical.
33. Workpieces longer than 3 times the chucking diameter must be supported by the tailstock or a steady rest.
34. Avoid small chuck diameters with large turning diameters.
35. Avoid short chucking lengths and small chucking contact.
36. Turn off the machine and disconnect from power before cleaning. Use a brush to remove shavings or debris — do not
use your hands.
37. Do not stand on the machine. Serious injury could occur if the machine tips over.
38. Never leave the machine running unattended. Turn the power off and do not leave the machine until moving parts
come to a complete stop.
39. Remove loose items and unnecessary work pieces from the area before starting the machine.
40. Direction of feed — feed work into a blade or cutter against the direction of rotation of the blade or cutter only.
41. Installation work and electrical wiring must be done by qualified electrician in accordance with all applicable codes
and standards.
42. Tighten all locks before operating.
43. Rotate workpiece by hand before applying power.
44. Rough out workpiece before installing on faceplate.
45. Do not mount split workpiece or one containing knot.
46. Use lowest speed when starting new workpiece.

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EGH1740 | EGH1760
5.0 SPECIFICATIONS
MODEL EGH-1740 EGH-1760
STOCK NUMBER 892100 892150
CAPACITY
Swing over Bed 17 in.
Swing over Cross Slide 11 in.
Distance between Centers 40 in.
BED
Width of Bed 12 in.
Swing Through Gap 24-1/4 in.
Length of Gap 7-2/3 in.
HEADSTOCK
Spindle Mount D1-6
Spindle Bore 3-1/8 in.
Number of spindle speeds 12
Range of spindle speeds 36-1800 R.P.M
Spindle Taper MT-5
CROSS SLIDE
Cross Slide Travel 9-1/4 in.
Top Slide Travel 6-2/7 in.
TAIL STOCK
Tailstock Spindle Travel 5 in.
Tailstock Diameter 2-1/3 in.
Taper in Tailstock Spindle MT-4
THREADS AND FEEDS
Longitudinal feeds (IPR) 0.0015-0.04”
Cross feeds (IPR) 0.00075-0.02”
Inch threads Number/Range (45) 2-72”
Metric threads Number/Range (39) 0.2-14mm
D.P. threads Number/Range (21) 8-44
M.P. threads Number/Range (18) 0.3-3.5
ELECTRICS
Motor 7-1/2HP, 230/460V, 3-PH
Prewired 230V CSA/CUS Certified
Coolant Pump Motor 1/8 HP
Overall Dimensions 94.5 x 44 x 69 in. 114 x 44 x 69 in.
Machine Net Weight 3,748 lbs. 4,079 lbs.
Gross Weight 4,409 lbs. 4,740 lbs.
We reserve the right to modify and improve our products.

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1700 Series Lathe
6.0 GENERAL INSTRUCTION
6.1 GENERAL LAYOUT OF LATHE
1. Headstock
2. Spindle
3. Bed
4. 4-Way tool post
5. Top slide
6. Saddle and Cross slide
7. Splash guard
8. Tailstock
9. One piece solid stand
10. Leadscrew
11. Feed shaft
12. Apron
13. Footbrake
14. Gearbox
15. End cover (Gear train)
Fig. 1
15 1 2 34567 8
14
913 12 11 10
9

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EGH1740 | EGH1760
6.2 FOUNDATION PLAN
Fig. 2 Fig. 3
Fig. 4
(One piece solid stand combined with the chip tray in the middle)
Model A B C D
EGH-1740 112.2” 87.0” 59.25” 60.43”
EGH-1760 131.88” 106.69” 78.93” 80.11”
Model TA TB
EGH-1740, EGH-1760 42.15” 48.25”

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1700 Series Lathe
Fig. 5
• Make sure that the minimum forklift capacity is
more than 3 tons.
• Forklift work should be done by two people, an
operator and watchman.
6.3 MOVING THE MACHINE WITH A FORKLIFT
Preparation:
1. Ensure the power is disconnected from machine.
2. Move the saddle and tailstock to the far right side of
machine in order to achieve balance.
• Insert forks under the bed as close to the
headstock as possible.
• Make sure to keep the machine’s center of
gravity spread evenly across the forks.
3. Ensure that tailstock and saddle are firmly locked
into place before attempting to move machine.
Forklift
Hexagon socket head bolt