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.
2
Table of contents
Section Page
Warranty and Service ............................................................................................................................................ 2
Table of contents ................................................................................................................................................... 3
Contents of Shipping Container ........................................................................................................................ 6
Contents of Hardware Bag ................................................................................................................................ 6
Securing the Pipe Bender ................................................................................................................................. 8
Direction of the Pipe Bender ............................................................................................................................. 8
When Using for the First Time ........................................................................................................................... 8
To Bend a Pipe .................................................................................................................................................. 8
Troubleshooting the JHPB Pipe Benders .............................................................................................................. 9
Replacement Parts ................................................................................................................................................ 9
Parts Breakdown – JHPB-20 and JHPB-30 Pipe Benders .............................................................................. 10
Parts List – JHPB-20 and JHPB-30 Pipe Benders .......................................................................................... 11
3
Safety warnings
g
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 pipe 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 pipe bender, do not use 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 approved safety glasses/face shields while using this machine. Everyday eyeglasses only
have impact resistant lenses; they are not safety glasses.
7. Before operating this pipe bender, 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. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
9. 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.
10. Provide for adequate space surrounding work area and non-glare, overhead lighting.
11. Keep the floor around the machine clean and free of scrap material, oil and grease.
12. Keep visitors a safe distance from the work area. Keep children away.
13. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
14. Maintain a balanced stance and do not overreach or use excessive force to perform any machine
operation.
15. Use the right tool. 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.
16. Use recommended accessories; improper accessories may be hazardous.
17. Maintain tools with care and clean for the best and safest performance. Follow instructions for lubricating
and changing accessories.
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
o to http://www.p65warnings.ca.gov.
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 well-ventilated 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.
4
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.
- - SAVE THESE INSTRUCTIONS - -
Specifications
Model ................................................................................... JHPB-20 .................................................... JHPB-30
Stock Number ......................................................................... 331900 ....................................................... 331910
Assembled Dimensions (LxWxH)(in.) ................. 38-3/4 x 26 x 28-3/4 ......................................... 40 x 35 x 28-3/4
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.
5
Unpacking
Contents of Shipping Container
1 Bending Die (A) – see also Table 1
1 Hardware Bag (B)
1 Hydraulic Pump Unit (C)
1 Tripod Seat (D)
1 Swage Block (E)
1 Support Assembly (F)
1 Hinge Pin (G)
1 Upper Wing Plate (H)
1 Lower Wing Plate (J)
1 Handle (K)
3 Tripod Leg (L)
3 Tripod Pole Base (M)
Bending
Die Size
JHPB-20 (2-in) JHPB-30 (3-in)
Model
01/2" x x
03/4" x x
01" x x
01-1/4" x x
01-1/2" x x
02" x x
02-1/2" x
03" x
Table 1 lists the bending die sizes that are included
with each hydraulic pipe bender model.
1. Screw three tripod pole bases (M) onto three
tripod poles (L).
2. Screw tripod poles (M) into the tripod seat (D).
For steps 3 – 13 refer to Figure 4.
3. Pull the knob (D
4. Insert the support assembly (F) onto the tripod seat (D) by first pulling out the knob (D
on the tripod seat (D). When the knob is
released, the support assembly will be secured
to the tripod seat.
5. Screw four double-ended threaded studs (M)
(short-threaded end) into bottom of the
housing base (C
6. Place the hydraulic pump unit (C) onto the
lower wing plate such that the studs protrude
through the bottom of the wing plate.
Note: The alignment holes in the wing plate
and pump unit must line up. If not, flip the wing
plate over.
7. With the assistance of a second person, lift the
hydraulic pump unit (C) and lower wing plate
(J) as a unit and place it on top of the support assembly (F).
8. The studs (M) should protrude through the
bottom of the support assembly plate (F) and
the spring pin should fit into the alignment
holes of the wing plate (J) and pump unit (C).
9. Secure the pump unit (C) and wing plate (J) to
the support assembly (F) with four each M12
lock washers (N) and M12 hex nuts (O).
Tighten with a 7/8" wrench.
10. Mount swage blocks (E) onto the end-holes of
the wing plate (J). These will be adjusted as
required later.
11. Place the upper wing plate (H) onto the pump
unit (C) and swage blocks (E).
12. Insert hinge pin (G) though the upper wing
plate and pump unit hinge holes and secure
the hinge pin with cotter pin (R).
13. Insert the handle (K) into the handle cap (C
on the pump unit.
14. Remove the factory installed oil plug (P) and
replace with the vented oil plug (P) and rubber O-ring (Q) from the hardware bag.
Important: Failure to replace the oil plug will
cause improper operation.
Assembly is complete and the pipe bender is ready
for use.
, Fig. 3) on the tripod seat and
1
, Fig. 3)
1
) of the hydraulic pump unit.
1
2
D
D
1
L
M
Figure 3
)
Figure 4
7
Operation
Securing the Pipe Bender
The JHPB-20 and JHPB-30 Hydraulic Pipe Bender
can be secured to the floor with three bolts through
the holes on the tripod pole bases if desired for
increased stability.
Direction of the Pipe Bender
The direction of the pipe bender can be adjusted
by pulling out the knob on the tripod seat (D
Fig. 3) and rotating the pump unit. When the knob
is released, the pipe bender can still be adjusted.
The machine can only be fixed in one position by
rotating the pipe bender until the position rod
resets into the indent in the base of the tripod seat.
When Using for the First Time
If the pipe bender is being used for the first time,
be sure to change the shipping plug on the top of
the pump unit (see Assembly Step 14) with the oil
plug in the hardware bag, which contains a vent
hole on the top. Failure to remove the shipping
plug will cause improper operation. The shipping
plug comes without the vent hole to prevent oil
leakage during the shipment.
, D,
1
To Bend a Pipe
Referring to Figure 5:
1. Raise the handle (A).
2. Raise the upper wing plate (B).
3. Select the suitable bending die (C) for the pipe
to be bent and slip it on the end of the cylinder ram (D).
4. Select the positions of the swage blocks (E) for
the pipe. For shorter pipes, position the swage
blocks closer together to account for the pipe
shortening during the bending process.
5. Turn the swage blocks (E) so the notch that
best fits the diameter of the pipe to be bent
faces in the direction of the bending die.
Note: Lubricating the swage blocks will
promote ease of movement.
6. Place the pipe you are going to bend.
Note: Keeping the bending die (C) lubricated
will promote easy removal of pipe after the
bend is made.
7. Lower the upper wing plate (B).
8. Close the release valve (G) by turning clockwise.
9. Pump the handle (A) to bend the pipe.
Note: Applying heat to the pipe will promote
ease in bending.
To Bend Pipe
When applying heat to the
pipe, the pipe must be free of oil and other
flammable material.
10. When the bend has been made, release the
pressure by opening the release valve (G).
The ram will automatically retreat.
Lubrication
Check the oil level regularly by removing the
vented oil plug found on the top of the pump
housing. When changing or adding oil, fill the tank
through the Cap Screw. Normally about 820 ml of
ISO VG of 22 or ISO VG of 32 hydraulic oil is
recommended for model JHPB-20 Hydraulic Pipe
Bender and 1700 ml for model JHPB-30. Lightly
grease all moving parts if necessary.
Figure 5
8
Troubleshooting the JHPB Pipe Benders
Symptom Possible Cause Correction
Hydraulic unit does not
lift, Pipe Bender does not
work
Piston does not advance
or retract smoothly
Oil low in tank. Make sure there is no oil leakage. Check
that the oil level is full.
Air in pump. Pump the handle repeatedly until the ram
piston stops to lift. Tilt the pump housing to
about 45 degrees. Loose the release valve
to allow any trapped air to escape from the
oil tank.
Worn UN-Ring in ram cylinder. Change the UN-Ring (Parts List Item 39).
Function Fail. Check if the steel ball (Parts List Item 43)
touching the release valve (Parts List Item
50) fell off. If so, tighten the release valve
clockwise.
Air inside the oil tank. Pump the handle repeatedly until the ram
piston stops to lift. Tilt the pump housing to
about 45 degrees. Loose the release valve
to allow any trapped air to escape from the
oil tank.
Low oil in the oil tank. Fill oil.
Incorrect oil type. Change to ISO VG of 22 or ISO VG of 32
hydraulic oil.
Debris or dirt in the oil flow. Flush the oil from inside the pump unit with
gasoline.
Leakage from the Ram
piston or Plunger Piston
Worn Seals Change the seal kits in the seal kits bag.
Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1800-274-6848 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.
9
Parts Breakdown – JHPB-20 and JHPB-30 Pipe Benders
7 ................ JHPB20-7G ............... Tripod Leg ............................................................... ...................................... 3
8 ................ JHPB20-8 .................. Spring Pin ................................................................ 6x30 mm ....................... 1
9 ................ JHPB20-9 .................. Tripod Leg Base Foot .............................................. ...................................... 3
10 .............. JHPB20-10 ................ Handle End Cap ...................................................... ...................................... 1
64 .............. JHPB20-64 ................ Dust Seal ................................................................. ...................................... 1
65 .............. JHPB20-65 ................ Position Rod ............................................................ ...................................... 1