Jet J-1230R Service manual

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Operating Instructions and Parts Manual
4-ft. Radial Arm Drill Press
Models J-1230R, J-1230R-4
WALTER MEIER (Manufacturing) Inc.
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-320036
Ph.: 800-274-6848 Revision B 07/2011
www.waltermeier.com Copyright © 2011 Walter Meier (Manufacturing) Inc.

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1.0 Warranty and Service
Walter Meier (Manufacturing) Inc., warrants every product it sells. If one of our tools needs service or repair, one of
our Authorized Service Centers located throughout the United States can give you quick service. In most cases, any
of these Walter Meier Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or
perform routine maintenance and major repair on your JET® tools. For the name of an Authorized Service Center in
your area call 1-800-274-6848.
MORE INFORMATION
Walter Meier is consistently adding new products to the line. For complete, up-to-date product information, check with
your local Walter Meier distributor, or visit waltermeier.com.
WARRANTY
JET products carry a limited warranty which varies in duration based upon the product (MW = Metalworking, WW =
Woodworking).
WHAT IS COVERED?
This warranty covers any defects in workmanship or materials subject to the exceptions stated below. Cutting tools,
abrasives and other consumables are excluded from warranty coverage.
WHO IS COVERED?
This warranty covers only the initial purchaser of the product.
WHAT IS THE PERIOD OF COVERAGE?
The general JET warranty lasts for the time period specified in the product literature of each product.
WHAT IS NOT COVERED?
Five Year Warranties do not cover woodworking (WW) products used for commercial, industrial or educational
purposes. Woodworking products with Five Year Warranties that are used for commercial, industrial or education
purposes revert to a One Year Warranty. This warranty does not cover defects due directly or indirectly to misuse,
abuse, negligence or accidents, normal wear-and-tear, improper repair or alterations, or lack of maintenance.
HOW TO GET SERVICE
The product or part must be returned for examination, postage prepaid, to a location designated by us. For the name
of the location nearest you, please call 1-800-274-6848.
You must provide proof of initial purchase date and an explanation of the complaint must accompany the
merchandise. If our inspection discloses a defect, we will repair or replace the product, or refund the purchase price,
at our option. We will return the repaired product or replacement at our expense unless it is determined by us that
there is no defect, or that the defect resulted from causes not within the scope of our warranty in which case we will,
at your direction, dispose of or return the product. In the event you choose to have the product returned, you will be
responsible for the shipping and handling costs of the return.
HOW STATE LAW APPLIES
This warranty gives you specific legal rights; you may also have other rights which vary from state to state.
LIMITATIONS ON THIS WARRANTY
WALTER MEIER (MANUFACTURING) INC., LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE
LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OR
MERCHANTABILITY AND FITNESS ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW
LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
WALTER MEIER 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.
Walter Meier sells through distributors only. The specifications in Walter Meier catalogs are given as general
information and are not binding. Members of Walter Meier reserve 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 Walter Meier.

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2.0 Table of Contents
Section Page
1.0 Warranty and Service............................................................................................................................................ 2
2.0 Table of Contents ..................................................................................................................................................3
3.0 Safety......................................................................................................................................................................5
3.1 Machinery General Safety Warnings...............................................................................................................5
3.2 General Electrical Cautions..............................................................................................................................6
3.3 Safety Instructions for Drill Presses.................................................................................................................6
4.0 Specifications......................................................................................................................................................... 7
4.1 Machining Capacities........................................................................................................................................8
4.2 Machine Environment.......................................................................................................................................8
4.3 Power Supply Requirements............................................................................................................................8
4.4 Overall Dimensions, J-1230R...........................................................................................................................9
5.0 General Features and Terminology ...................................................................................................................10
6.0 Set-Up and Assembly.......................................................................................................................................... 12
6.1 Floor Diagrams for J-1230R...........................................................................................................................12
6.2 Unpacking........................................................................................................................................................13
6.3 Machine Set-Up...............................................................................................................................................14
6.4 Electrical Connections ....................................................................................................................................15
7.0 Operating Controls...............................................................................................................................................16
8.0 Operation..............................................................................................................................................................17
8.1 Clamping workpieces......................................................................................................................................17
8.2 Tool insertion...................................................................................................................................................17
8.3 Tool Positioning over workpiece....................................................................................................................17
8.4 Unlocking arm and column mechanisms.......................................................................................................18
8.5 Raising and lowering radial arm.....................................................................................................................18
8.6 Moving drill head along arm ...........................................................................................................................18
8.7 Rotating arm on support column....................................................................................................................18
8.8 Setting spindle speed......................................................................................................................................18
8.9 Feed rate and depthof cut.............................................................................................................................19
8.10 Setting feed rate............................................................................................................................................19
8.11 Setting depthof cut using power feed system............................................................................................20
8.12 Spindle direction and power feed.................................................................................................................20
8.13 Hand feed – roughing operations.................................................................................................................20
8.14 Fine hand feed using powerfeed system...................................................................................................20
8.15 Tapping..........................................................................................................................................................21
8.16 Power ON/OFF..............................................................................................................................................21
8.17 Power ON light ..............................................................................................................................................21
8.18 Coolant control ..............................................................................................................................................21
8.19 Spindle motor controls..................................................................................................................................21
8.20 Turning off spindle drive...............................................................................................................................21
8.21 Resetting STOP switch.................................................................................................................................21
8.22 Using load ammeter......................................................................................................................................21
8.23 Tapping operations .......................................................................................................................................22
8.24 Arm/spindle control lever..............................................................................................................................22
9.0 Adjustments .........................................................................................................................................................22
9.1 Clamping Device.............................................................................................................................................22
9.2 Head/Rail Backlash.........................................................................................................................................23
10.0 Spindle Speed Chart......................................................................................................................................... 24
11.0 Troubleshooting the J-1230R........................................................................................................................... 25
12.0 Maintenance.......................................................................................................................................................26
12.1 General Cleaning ..........................................................................................................................................26
12.2 Lubrication.....................................................................................................................................................26
13.0 Replacement Parts............................................................................................................................................ 28
13.1.1 Riser Mechanism: Exploded View............................................................................................................28
13.1.2 Riser Mechanism: Parts List .....................................................................................................................29
13.2.1 Column and Base: Exploded View...........................................................................................................30
13.2.2 Column and Base: Parts List.....................................................................................................................31
13.3.1 Arm (Front): Exploded View......................................................................................................................32
13.3.2 Arm (Front): Parts List...............................................................................................................................33
13.4.1 Arm (Rear) and Clamping Gearbox: Exploded View...............................................................................34

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13.4.2 Arm (Rear) and Clamping Gearbox: Parts List........................................................................................35
13.5.1 Coolant System: Exploded View...............................................................................................................37
13.5.2 Coolant System: Parts List........................................................................................................................37
13.6.1 Gearbox Assembly (Head): Exploded View.............................................................................................38
13.6.2 Gearbox Assembly (Head): Parts List......................................................................................................39
13.7.1 Rear of Head I: Exploded View.................................................................................................................42
13.7.2 Rear of Head I: Parts List..........................................................................................................................43
13.8.1 Counterweight Assembly: Exploded View...............................................................................................44
13.8.2 Counterweight Assembly: Parts List.........................................................................................................44
14.0 Electrical Connections for J-1230R..................................................................................................................45
14.1 Electrical Connections for J-1230R: Parts List...........................................................................................46
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 even
fatalinjury.

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3.0 Safety
- Misuse of this machine can cause serious
injury.
- For safety, machine must be set up, used and
serviced properly.
- Read, understand and follow instructions in the
operator’s and parts manual which was
shipped with your machine.
When setting up machine:
- Always avoid using machine in damp or poorly
lighted work areas.
- Always be sure machine is securely anchored
to the floor.
- Always keep machine guards in place.
- Always put start switch in “OFF” position before
plugging in machine.
When using machine:
-Never operate with machine guards missing.
-Always wear safety glasses with side shields
(See ANSI Z87.1)
-Never wear loose clothing or jewelry.
-Never overreach — you may slip and fall into
the machine.
-Never leave machine running while you are
away from it.
-Always shut off the machine when not in use.
When servicing machine:
-Always unplug machine from electrical power
while servicing.
-Always follow instructions in operator’s and
parts manual when changing accessory tools
or parts.
-Never modify the machine without consulting
Walter Meier (Manufacturing) Inc.
Read and follow these simple rules for best
results and full benefits from your machine.
Used properly, JET machinery is among the
best in design and safety. However, any
machine used improperly can be rendered
inefficient and unsafe. It is mandatory that those
who use our products be properly trained in how
to use them correctly. They should read and
understand the Operating Instructions and Parts
Manual as well as all labels affixed to the
machine. Failure to follow all of these warnings
can cause serious injuries.
3.1 Machinery General Safety Warnings
1. Always wear protective eye wear when
operating machinery. Eye wear shall be
impact resistant, protective safety glasses
with side shields which comply with ANSI
Z87.1 specifications. Use of eye wear which
does not comply with ANSI Z87.1
specifications could result in severe injury
from breakage of eye protection.
2. Wear proper apparel. No loose clothing or
jewelry which can get caught in moving
parts. Contain long hair. Rubber soled
footwear is recommended for best footing.
3. Do not overreach. Failure to maintain proper
working position can cause you to fall into
the machine or cause your clothing to get
caught — pulling you into the machine.
4. Keep guards in place and in proper working
order. Do not operate the machine with
guards removed.
5. Avoid dangerous working environments. Do
not use stationary machine tools in wet or
damp locations, or in an explosive
environment. Keep work areas clean and
well lit. Special electrics should be used
whenworking onflammable materials.
6. Avoid accidental starts by being sure the
start switch is “OFF” before plugging in the
machine.
7. Machinery must be anchored to the floor.
8. Never leave the machine running while
unattended. Machine shall be shut off
whenever it is not in operation.
9. Disconnect electrical power before servicing.
Whenever changing accessories or general
maintenance is done on the machine,
electrical power to the machine must be
disconnected before work is done.
10. Maintain all machine tools with care. Follow
all maintenance instructions for lubricating
and the changing of accessories. No attempt
shall be made to modify or have makeshift
repairs done to the machine. This not only
voids the warranty but also renders the
machine unsafe.
11. Secure work. Use clamps or a vise to hold
work, when practical. It is safer than using
your hands and it frees both hands to
operate the machine.
12. Never brush away chips while the machine
is in operation.
13. Keep work area clean. Cluttered areas invite
accidents.
14. Remove adjusting keys and wrenches
before turning machine on.
15. Use the right tool. Don’t force a tool or
attachment to do a job for which it was not
designed.

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16. Use only recommended accessories and
follow manufacturer’s instructions pertaining
to them.
17. Keep hands in sight and clear of all moving
parts and cutting surfaces.
18. All visitors should be kept a safe distance
from the work area. Make workshop
completely safe by using padlocks, master
switches, or by removing starter keys.
19. Know the tool you are using; its application,
limitations, and potential hazards.
3.2 General Electrical Cautions
This machine should be grounded in accordance with the National Electrical Code and local codes and
ordinances. This work should be done by a qualified electrician. The machine should be grounded to
protect the user from electrical shock.
Caution: For circuits which are far away from the electrical service box, the wire size must be increased
in order to deliver ample voltage to the motor. To minimize power losses and to prevent motor
overheating and burnout, the use of wire sizes for branch circuits or electrical extension cords according
to the following table is recommended:
Conductor Length AWG Number
240 Volt Lines 120 Volt Lines
0 – 50 Ft. No. 14 No. 14
50 – 100 Ft. No. 14 No. 12
Over 100 Ft. No. 12 No. 8
Table 1
3.3 Safety Instructions for Drill Presses
1. All work shall be secured using either clamps or a vise to the drill press table. It is unsafe to use your
hands to hold any workpiece being drilled.
2. Drill press head and table shall be securely locked to the column before operating the drill press. This
must always be checked prior to starting the machine.
3. Always use the correct tooling. Tooling shall always be maintained and properly sharpened. All
tooling must be run at the proper speeds and feeds as they apply to the job. Use only recommended
accessories and follow those manufacturer’s instructions pertaining to them. Tooling shall not be
forced into any workpiece but fed according to the proper specifications. Failure to follow these
instructions will not only ruin the tooling as well as the machine, but can cause serious injury.
4. Never brush away shavings or chips while the machine is in operation. All clean up should be done
after the machine is stopped.
5. Keep hands in sight. Do not put hands or fingers around, on, or below any rotating cutting tools.
Leather safety gloves should be used when handling any sharp objects or cutting tools. See Figure A.
6. Always wear protective eye wear when operating, servicing or adjusting machinery. Eyewear shall be
impact resistant, protective safety glasses with side shields complying with ANSI Z87.1 specifications.
Use of eye wear which does not comply with ANSI Z87.1 specifications could result in severe injury
from breakage of eye protection. See Figure B.
7. When drilling in material which causes dust, a dust mask shall be worn. See Figure C.
8. Avoid contact with coolant, especially guarding the eyes.
9. Non-slip footwear and safety shoes are recommended. See Figure D.
10. Wear ear protectors (plugs or muffs) during extended periods of operation. See Figure E.
Figure 1

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4.0 Specifications
The JET Model J-1230R is a powerful and versatile radial arm drill press. The drill head is mounted on an
arm and can slide along the arm to position the spindle over the work piece. The arm itself can be rotated
on its support column to allow centering the spindle over the work piece.
Drilling can be performed manually or with power feed assistance. In addition, parameters of RPM, power
feed rate and drilling depth can be pre-set by the operator, using controls conveniently positioned on the
drill head.
The power train gears and spline shaft are made of high quality heat-treated and ground nickel chrome
steel, offering greater strength and smoothness to high-torque loads. The spindle is of case hardened
steel and supported by dual row taper roller and thrust ball bearings at the nose, with thrust and axial
bearings at the top. The frame is made of Meehanite® and high-tensile strength cast iron.
A precision machined box table allows convenient positioning and clamping of smaller work pieces. The
box table can be removed from the base to allow larger workpieces to be clamped on the base itself. Both
table and base have multiple T-slots for clamping set-ups.
Model number........................................................................................................................J-1230R
(J-1230R-4 is the same machine but wired for 460V operation)
Stock numbers:
J-1230R .............................................................................................................................. 320036
J-1230R-4 ........................................................................................................................... 320037
Head and Spindle:
Push button controls.................................................................................................................110V
Spindle motor (model J-1230R)................TEFC, 5/3 HP (3.7/2.2kW), 3PH, 230V only, 13/18 A, 60Hz
Spindle motor (model J-1230R-4)...........TEFC, 5/3 HP (3.7/2.2kW), 3 PH, 460V only, 6.6/7.5 A, 60Hz
Spindle taper ................................................................................................................ Morse No. 4
Spindle speeds ...........................................................................twelve speeds, within 45-1550 RPM
Quill (spindle) travel...............................................................................................9-7/8 in. (247mm)
Quill (spindle) travel with powerfeed engaged ............................................................9-7/16 (240mm)
Spindle travel along arm, total.................................................................................... 35 in. (875mm)
Feed rates (distance per revolution) ............................................................0.002, 0.004, 0.006 in/rev
Base surface to spindle, maximum (no tooling)..........................................................54 in. (1350mm)
Base surface to spindle, minimum (no tooling) ...................................................... 19-3/8 in. (484mm)
Column to spindle center distance, maximum............................................................ 46 in. (1170mm)
Column to spindle center distance, minimum ........................................................ 13-3/8 in. (334mm)
Sound level (approx. 3-1/4 ft./1m from gearbox) *........................82 dB at 1500 rpm; 79 dB at 88 RPM
Arm and Column:
Column diameter..............................................................................................11-13/16 in. (300mm)
Arm vertical travel on column............................................................................... 34-5/8 in. (880mm)
Arm elevating motor.......................................TEFC, 1 HP (0.75kW), 3 PH, 230/460V, 3.2/1.6A, 60Hz
Clamping motor..............................................TEFC, 1 HP (0.75kW), 3PH, 230/460V, 3.2/1.6A, 60Hz
Base and Table:
Box table dimensions (LxWxH).......................................25 x 20-1/2 x16-1/2 in. (635 x 520 x 419mm)
T-slots in Table ................................................................................................five at 3/4 in. (19mm)
Base dimensions (LxWxH).........................................................68 x 28 x7 in. (1710 x 715 x 180mm)
T-slots in Base...............................................................................................three at 3/4 in. (19mm)
Additional specifications:
Coolant pump motor......................................TEFC, 1/8 HP (0.1kW), 3 PH, 220/440V, 0.2/0.1A, 60Hz
Machine height (floor to motor at maximum elevation) ........................................109-1/2 in. (2780mm)
Shipping Dimensions (LxWxH)...............................................80 x 39 x 88 in. (2035 x 995 x 2240mm)
Net weight .............................................................................................................4,630 lbs/2100kg
Shipping weight......................................................................................................5,070 lbs/2300kg
* Measured under test conditions SS41 material, 32mm thick, Ø32mm tool.

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4.1 Machining Capacities
Drillin
g
Tappin
g
Borin
g
Mild Steel 1-7/8 in.
(
47.63mm
)
1”
(
25.4mm
)
3-3/8”
(
84mm
)
Cast iron 2-5/16 in.
(
58.75mm
)
1-1/2”
(
38.1mm
)
4-3/4”
(
119mm
)
Table 2
4.2 Machine Environment
1. Do not position the machine where it receives direct sunlight.
2. Normal ambient temperature should be between +5°C (41°F) and 40°C (104°F).
3. Humidity: Between 30% and 95%. At maximum temperature of 40°C/104°F, relative humidity should
not be over 50%. Higher humidity is acceptable at relative lower temperatures (e.g. 90% humidity at
20C°).
4. Keep machine away from gasoline, chemical substances, dust, acid, sulfides, magnetic interference
and explosive environments.
5. Keep machine away from electrical interference sources such as welding machines and EDM
(Electric Discharge Machining).
6. Illumination of work area should be greater than 500lux.
7. Work area must have adequate ventilation.
4.3 Power Supply Requirements
1. Acceptable voltage fluctuation: normally +/- 10%
2. Acceptable frequency fluctuation: +/- 1Hz (50/60Hz)
3. Acceptable momentary power-off duration: less than 10m.sec
4. Acceptable voltage impulse:
Peak value: 200% or less than the line voltage of the actual value (rms.value).
Duration: 1.5m.sec or less.
5. Acceptable AC voltage of the waveform distortion.
6. Acceptable imbalance of the line voltage: 5% or less.

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4.4 Overall Dimensions, J-1230R
Figure 2
The specifications in this manual were current at time of publication, but because of our policy of
continuous improvement, Walter Meier reserves the right to change specifications at any time and without
prior notice, without incurring obligations.

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5.0 General Features and Terminology
Figure 3
1. Top Cap
2. Elevating Ball Screw
3. Column
4. Locking Nut
5. Handwheel (horizontal gearbox travel)
6. Coolant Nozzle
7. Column Clamping Indicators
8. Box Table
9. Base
10. Leveling Screws
11. Spindle Motor
12. Drill Head/Gearbox (see Figure 10 for details)
13. RaCK
14. Arm
15. Arm Rotation Handle
16. Work Lamp
17. Fine Feed Handwheel
18. Spindle
19. Work Lamp Toggle Switch
20. Electrical cabinet
21. Counterweight System
22. Clamping Rod
23. Guard Panel
24. Clamping Gear
25. Coolant Pump
26. Arm Raising Motor
27. Clamping Motor
28. Clamping Gearbox
29. Elevating Worm Gear Reducer
30. Arm Rail
31. Caution Label – High Voltage (p/n CL-HV)
32. Warning Label – Tipping Risk (p/n J1230R-WL)
33. Caution Label – Stop Spindle (p/n J1230R-CL)
34. Machine Identification Plate
35. Support Block (for shipping only)