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 warning labels if they become
obscured or removed.
4. This electric pinch roll bender 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
pinch roll bender, do not use it until proper
training and knowledge have been obtained.
5. Do not use this machine 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 ANSI Z87.1 approved safety
glasses or face shield while using this machine.
(Everyday eyeglasses only have impact
resistant lenses; they are not safety glasses.)
7. Wear ear protectors (plugs or muffs) if noise
exceeds safe levels.
8. Make certain the machine is properly grounded.
9. Before operating the machine, remove tie,
rings, watches, other jewelry, and roll sleeves
up past the elbows. Do not wear loose clothing.
Confine long hair.
10. Keep the floor around the machine clean and
free of scrap material, oil and grease.
11. Keep machine guards in place at all tim es when
the machine is in use. If removed for
maintenance purposes, use extreme caution
and replace the guards immediately upon
completion of maintenance.
12. 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.
13. Make all machine adjustments or maintenance
with machine unplugged from power source.
14. Use the right tool. Do not force a tool or
attachment to do a job that it was not designed
to do.
15. Make certain the switch is in the OFF position
before connecting the machine to the power
supply.
16. 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.
17. Give your work undivided attention. Looking
around, carrying on a conversation and "horseplay" are careless acts that can result in serious
injury.
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. Do not overreach. Failure to maintain proper
working position can cause you to fall into the
machine or allow clothing to get caught, pulling
you into the machine.
21. Keep the floor around the machine clean and
free of scrap material, oil and grease.
22. Use recommended accessories; improper
accessories may be hazardous.
23. CALIFORNIA PROPOSITION 65 WARNING:
This product contains chemicals known to the
State of California to cause cancer, or birth
defects or other reproductive harm.
24. This product, when used for welding, cutting, or
working with metal, produces fumes, gases, or
dusts which contain chemicals known to the
State of California to cause birth defects and, in
some cases, cancer. (California Health and
Safety Code Section 25249.5 et seq.)
25. Do not operate this machine while under the
influence of drugs, alcohol or any medication.
26. Keep tools sharp and clean for safe and best
performance.
27. Deburr any sharp metal edges of the workpiece
before placing it into the machine.
28. Keep hands away from pinch roll area during
operation.
29. Do not attempt to feed material beyond the
maximum capacity of machine. See Table 3.
30. Provide for adequate space surrounding work
area and non-glare, overhead lighting.
2
31. Don't use in dangerous environment. Don't use
power tools in damp or wet locations, or expose
them to rain.
32. Do not stand on the machine. Serious injury
could occur if the machine tips over.
33. Never leave the machine running unattended.
Turn the power off and do not leave the
machine until it comes to a complete stop.
34. Use only JET factory authorized replacement
parts and accessories; otherwise, the warranty
and guarantee are null and void.
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.
35. Use proper extension cord. Make sure your
extension cord is in good condition. When using
an extension cord, be sure to use one heavy
enough to carry the current your product will
draw. An undersized cord will cause a drop in
line voltage resulting in loss of power and
overheating. Table 1 (sect. 6.2) shows correct
size to use depending on cord length and
nameplate ampere rating. If in doubt, use the
next heavier gauge. The smaller the gauge
number, the heavier the cord.
SAVE THESE INSTRUCTIONS
2.0 About this manual
This manual is provided by JET, covering the safe operation and maintenance procedures f or the JET Model
EPR-2 Electric Pinch Roll Bender. 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 consistent, long-term 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 c an also be reached at our
web site: www.jettools.com.
Retain this manual for future reference. If the machine transfers ownership, the manual should accompany it.
Read and understand the entire contents of this manual before attempting assembly or
operation! Failure to comply may cause serious injury!
1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2
2.0 About this manual .......................................................................................................................................... 3
3.0 Table of contents ............................................................................................................................................ 4
4.0 Specifications for EPR-2 Electric Pinch Roll Bender ...................................................................................... 5
5.0 Setup and assembly ....................................................................................................................................... 6
10.0 Roll sizes and profiles ................................................................................................................................ 10
12.0 Replacement parts ..................................................................................................................................... 12
12.1.1 EPR-2 Electric Pinch Roll Bender – Exploded View ........................................................................... 13
12.1.2 EPR-2 Electric Pinch Roll Bender – Parts List .................................................................................... 14
13.0 Electrical Connections for EPR-2 Pinch Roll Bender ................................................................................. 17
14.0 Warranty and Service ................................................................................................................................. 18
4
4.0 Specifications for EPR-2 Electric Pinch Roll Bender
Model number .............................................................................................................................................. EPR-2
Stock number .............................................................................................................................................. 754435
Motor and electricals:
Motor type ................................................................................................. totally enclosed fan cooled, induction
Voltage ........................................................................................................................................................ 230 V
Listed FLA (full load amps) ............................................................................................................................. 4 A
Running amps (no load) ................................................................................................................................. 0 A
Power transfer ........................................................................................................................ reduction gearbox
Gear reduction ratio ...................................................................................................................................... 1:15
Power cord length .......................................................................................................................... 6-1/2 ft. (2 m)
Power plug ....................................................................................................................................... not provided
Recommended circuit size
Foot switch ........................................................................................................... satellite foot pedal with E-stop
Foot switch cable length .................................................................................................................... 6 ft. (1.8 m)
Capacities:
Maximum capacity ........................................................................................................ (see sect. 10.0, Table 3)
Shaft speed .................................................................................................................. 2 speeds: 6 and 12 RPM
Operating position ................................................................................................................ vertical or horizontal
Main mate ri a l s :
Head ............................................................................................................................................................ steel
Shaft diameter ........................................................................................................................ 30 mm (1-3/16 in.)
Top roll diameter ........................................................................................................................ 148 mm (5.8 in.)
Bottom roll diameter ................................................................................................................... 118 mm (4.6 in.)
Shipping dimensions (LxWxH) ......................................................... 930 x 660 x 1435 mm (36.6 x 26 x 56.5 in.)
Overall dimensions (LxWxH) .............................................................. 790 x 500 x 1420 mm (31 x 19.7 x 56 in.)
Weights:
Net .............................................................................................................................................. 239 kg (527 lb)
Shipping ....................................................................................................................................... 275 kg (606 lb)
1
subject to local and national electrical codes
L= length; W=width; H=height
The specifications in this manual were current at time of publication, 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.
1
.......................................................................................................................... 10 A
5
Read and understand the entire
contents of this manual before attempti ng setup or operation! Failure to comply may cause
serious injury.
5.0 Setup and assembly
Open shipping container and check for shipping
damage. Report any damage immediately to your
distributor and shipping agent. Do not discard any
shipping material until the machine is assembled
and running properly.
Compare the contents of your container with the
following parts list to make sure all parts are intact.
Missing parts, if any, should be reported to your
distributor. Read the instruction manual thoroughly
for assembly, maintenance and safety instructions.
5.1 Shipping contents
1 Electric Pinch Roll Bender
1 Combination wrench 22mm
9 Spacers:
2 1mm spacers with keyway
2 2mm spacers with keyway*
2 5mm spacers with keyway
1 1mm spacer without keyway
1 2mm spacer without keyway*
1 5mm spacer without keyway
1 Operating Instructions and Parts Manual
1 Warranty Card
5.2 Positioning and cleanup
Position machine so there is enough room on all
sides for general maintenance and feeding of
materials. Anchor machine to a stable floor,
preferably concrete, using lag screws or other
appropriate fasteners through the holes in base.
Level the machine; use shims if needed.
Exposed metal surfaces have been given a
protective coating. Remove this with a soft cloth and
a cleaner-degreaser. Do not use gasoline, paint
thinner, acetone, etc., as these may damage
painted surfaces. Do not use an abrasive pad, as it
may scratch polished surfaces.
This machine may be used in vertical or horizontal
position (Figure 5-2).
Figure 5-2
For horizontal position:
Remove any fasteners holding machine to pallet,
and use a forklift or hoist with straps to carefully
move machine into position. Place straps around
handle, as shown in Figure 5-1. Lifting equipment
must be properly rated for weight of machine.
Figure 5-1
Machine must be anchored
to floor. Failure to comply may cause
serious injury.
1. Open cabinet door and remove two socket head
cap screws (Figure 5-3).
2. Carefully move head to horizontal position, and
insert the two socket head cap screws into the
back holes, as shown. Securely tighten screws.
Figure 5-3
6
6.0 Electrical connections
Electrical connections must be
made by a qualified electrician in compliance
with all relevant codes. This machine must be
properly grounded to help prevent electrical
shock and possible fatal injury.
The EPR-2 Pinch Roll Bender is pre-wired for 230volt, three-phase operation. It is not provided with a
power plug; you may either connect a proper 230V,
3-phase UL-listed plug, or “hardwire” the machine
directly to a service panel (make sure a disconnect
is available to the operator).
It is recommended that the Pinch Roll Bender be
connected to a dedicated 10 amp circuit with a
circuit breaker or fuse. If connected to a circuit
protected by fuses, use time delay fuse marked “D”.
NOTE: Local codes take precedence over
recommendations.
6.1 GROUNDING INSTRUCTIONS
This tool must be grounded. In the event of a
malfunction or breakdown, grounding provides a
path of least resistance for electric current to reduce
the risk of electric shock.
If used with a plug:
Improper connection of the
equipment-grounding conductor can r esult in a
risk of electric shock. Check with a qualified
electrician or service person if you are in do ubt
as to whether the outlet is properly grounded.
The conductor with insulation having an outer
surface that is green with or without yellow stripes is
the equipment-grounding conductor. If repair or
replacement of the electric cord or plug is
necessary, do not connect the equipment-grounding
conductor to a live terminal.
Repair or replace damaged or worn cord
immediately.
6.2 Extension cords
The use of extension cords is discouraged; try to
position equipment within reach of the power
source. If an extension cord becomes necessary, be
sure it is heavy enough to carry the current your
product will draw. An undersized cord will cause a
drop in line voltage resulting in loss of power and
overheating.
Table 1 shows recommended size to use depending
on cord length and nameplate ampere rating. If in
doubt, use the next heavier gauge. The smaller the
gauge number, the heavier the cord.
Grounded, cord-connected tools intended for use on
a supply circuit having a nominal rating between
150-250 V inclusive:
This tool is intended for use on a three-phase circuit.
Make sure the tool is connected to an outlet having
the same configuration as the plug. No adapter is
available or should be used with this tool. If the tool
must be reconnected for use on a different type of
electric circuit, the reconnection should be made by
qualified service personnel; and after reconnection,
the tool should comply with all local codes and
ordinances.
If hardwired:
Permanently connected tools: This tool should be
connected to a grounded metal permanent wiring
system; or to a system having an equipmentgrounding conductor.
Ampere
Rating
More
Than
00 06 18 16 16 14
06 10 18 16 14 12
10 12 16 16 14 12
12 16 14 12
Not
More
Than
Table 1: Extension cord recommendations
Volts
240 50 100 200 300
AWG
Total length of
cord in feet
Not
Recommended
7
7.0 Adjustments
7.1 Guide rollers
The two guide rollers at the sides prevent workpiece
from twisting as it moves through the bending rolls.
Adjust these as needed, top and bottom, by turning
the bolts with a wrench. See Figure 7-1.
Note: To achieve a circular profile, guide rollers
must be parallel to machine surface. Otherwise a
spiral profile will occur.
Figure 7-1
7.2 Pinch rolls
Figure 8-1: control panel
8.2 Operating procedure
1. Install rolls to match desired procedure.
2. Insert mate rial and turn handle to lower middle
roll to desired position (Figure 8-2). Material
should be parallel to ground and contact all
three roll sets. Do not apply excessive pressure
from middle roll.
The Pinch Roll Bender is equipped with 6 standard
rolls, and 9 spacers. See Figure 10-1.
Pinch roll configuration can be adjusted to
accommodate different material forms and
thickness. Remove hex nut from end of shaft
(counterclockwise to loosen), and arrange rolls for
desired operation. Use provided spacers as
needed.
See sect. 10.0 for material profiles that can be
accomplished with the provided rolls.
8.0 Operation
8.1 Controls
See Figure 8-1.
Power lamp: Indicates power is flowing to machine.
Start button: Activates the rolls.
Main switch: Turns on power to machine (powe r
lamp will illuminate).
Speed selector: 1 = 6 RPM, 2 = 12 RPM.
Emergency stop: Located atop foot pedal post.
Push E-stop button for fast shut down of machine.
To re-start machine, rotate E-stop button clock wise
until it disengages.
Foot pedals: Two pedals for instant forward or
reverse motion.
Figure 8-2: position middle roll
3. Press foot pedals to send workpiece forward
and backward through the rolls (Figure 8-3).
Figure 8-3: feed material back and forth
8
4. Lower middle roll again (Figure 8-4).
A
Figure 8-4: lower middle roll
5. Send material through again (Figure 8-5).
6. Continue this process until bending dimension
has been achieved. Do not overstress the
machine; take multiple passes as needed.
Figure 9-1: lubrication points
mbient
temp.
5℃~20℃
20℃~40℃
40℃~80℃
SHELL
OIL
OMALA 150
OMALA 320
OMALA 460
Table 2: recommended oil
MOBIL
OIL ISO VG
MOBIL Gear 629 EP 150
MOBIL Gear 632 EP 320
MOBIL Gear 634 EP 460
Figure 8-5: repeat
9.0 User-maintenance
Disconnect machine from
power supply before performing any
maintenance. Failure to comply may cause
serious injury.
Keep the rolls clean and rust-free.
Apply oil every 500 working hours to locations
shown in Figure 9-1. See table 2 for recommended
oil.
9.1 Additional servicing
Any additional servicing should be performed by an
authorized JET service center.
9
10.0 Roll sizes and profiles
Figure 10-1: Provided rolls and spacers
Table 3: Profiles formed with the standard rolls
10
11.0 Profile operations
These are only representative of the various forming methods possible with your pinch roll machine.
Figure 11-1
Figure 11-4
Figure 11-2
Figure 11-3
Figure 11-5
11
12.0 Replacement parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of
your machine available when you call will allow us to serve you quickly and accurately.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.
12
12.1.1 EPR-2 Electric Pinch Roll Bender – Exploded View
13
12.1.2 EPR-2 Electric Pinch Roll Bender – Parts List
47 .............. EPR2-47 .................... Head Set .................................................................. ...................................... 1
48 .............. EPR2-48 .................... Motor ....................................................................... ...................................... 1
50 .............. EPR2-50 .................... Hex Head Rod ......................................................... ...................................... 1
51 .............. EPR2-51 .................... Support Rod ............................................................ ...................................... 2
52 .............. EPR2-52 .................... Index Plate ............................................................... ...................................... 1
13.0 Electrical Connections for EPR-2 Pinch Roll Bender
17
14.0 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. JET woodworking machinery is designed to be used with Wood.
Use of these machines in the processing of metal, plastics, or other materials may void the warranty. The exceptions
are acrylics and other natural items that are made specifically for wood turning.
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.
18
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19
427 New Sanford Road
LaVergne, Tennessee 37086
Phone: 800-274-6848
www.jettools.com
20
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