Parker HB632 User manual

The Fitting Authority
Bulletin 4391-B26
May 2001
Parker Hydraulic Tube
Bender, Model HB632
FluidConnectors

FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL
INJURY AND PROPERTY DAMAGE.
This document and other information from Parker Hannifin Corporation, its subsidiaries and authorized distributors provide product and/or system options for further investigation by
users having technical expertise. It is important that you analyze all aspects of your application and review the information concerning the product or system in the current product
catalog. Due to the variety of operating conditions and applications for these products or systems, the user, through its own analysis and testing, is solely responsible for making the
final selection of the products and systems and assuring that all performance, safety and warning requirements of the application are met.
The products described herein, including without limitation, product features, specifications, designs, availability and pricing, are subject to change by Parker Hannifin Corporation
and its subsidiaries at any time without notice.
WARNING


Copyright 2001, Parker Hannifin Corporation, All Rights Reserved
The items described in this document are hereby offered for sale by Parker Hannifin Corporation, its subsidiaries or its authorized distributors. This offer and its acceptance are
governed by the provisions stated in the “Offer of Sale”.
Offer of Sale
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH

1Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4391-B26 Hydraulic Tube Bender
FluidConnectors
Introduction
Parker Hydraulic Tube Bender
Model HB632
For 3/8" - 2" (10-50mm) tubing and 3/8 to
1 1/2 IPS
The Parker Model HB632 Tube Bender is a hydrauli-
cally operated bender for bending annealed steel and
stainless steel tubing from 3/8" O.D. through 2" O.D.
It is operated by means of a separate power source
producing 10,000 psi hydraulic pressure. It can be
operated without bolting to a table or bench if no man-
drels are required, making it an excellent unit to move
about and use at the point where the tubing installation
is being made. It can also be attached to a table and
used with mandrels. Part No.: 631050
Bender Construction
The bender consists of a cast aluminum housing, with a
hydraulically actuated drive mechanism which enables an
operator to make bends up to 180° in one continuous smooth
operation on tubing up to 2" in diameter.
Capacity
Table 1 below assigns a Model Code for each model of
Parker tube benders. Table 2 gives the capacity for all
Parker benders. The Model HB632 is represented by
model code C so you can easily check for its capabilities.
Table 1 –Tube Bender Model Codes
Table 2 –Tube Benders Maximum Capacity Guide
* See page 3 for pipe bending capabilities
Specifications:
1) Min. tube size 3/8"
2) Max. tube size 2"
3) Min. bend radius 1 1/8"
4) Max. bend radius 12" (special order)
5) Max. tube bend 180°
6) Weight —170 lbs. (77.1 kg) without accessories
7) Minimum tube wall thickness (% of O.D.) 4% with mandrel, 7% without mandrel
8) The HB632 is capable of bending 1/2" O.D. and under fully annealed steel and
stainless steel tubing with no limit on tube wall thickness
9) The HB632 is capable of bending SOFT aluminum and copper tubing with no
limit on wall thickness.
10) For HARD copper, ALLOY STEEL, and HIGH STRENGTH aluminum, use the
tabulations shown for stainless steel.
Model
Code
Model
No.
Tubing O.D.
Capacity Bender Type
Rated Torque
(in./lbs.)
A 412 1/4" –3/4" Worm & Gear 2,700
B 424 1/4" –1-1/4" Worm & Gear 11,000
C HB632 1/4" –2" Hydraulic 52,000
D CP432 3/8" –2" Hydraulic N/A
Tube Bender Model Codes
0.035 0.049 0.058 0.065 0.072 0.083 0.095 0.109 0.120 0.134 0.156 0.188
S ABCD ABCD ABCD ABCD BCD BCD BCD BCD BCD BCD BCD BCD
SS BCD BCD BCD BCD BCD BCD BCD BCD BCD BCD BCD BCD
S BCD BCD BCD BCD BCD BCD BCD BCD BCD BCD BCD BCD
SS BCD BCD BCD BCD BCD BCD BCD BCD BCD BCD CD CD
S BCD BCD BCD BCD BCD BCD CD CD CD CD CD CD
SS BCD BCD BCD BCD BCD CD CD CD CD CD C C
S BCD BCD BCD BCD BCD CD CD CD CD CD CD CD
SS BCD BCD CD CD CD CD CD CD CD CD C C
S CDCDCDCDCDCDCDCDCDCDCDCD
SS CD CD CD CD CD CD CD CD CD CD ——
2"
Material
3/4"
1"
1-1/4"
1-1/2"
Tube Benders Maximum Capacity Guide*
Tube
O.D.
Tube Wall Thickness (inches)
Tube Bender Model Codes

2Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4391-B26 Hydraulic Tube Bender
Bender Parts and Accessories
Mandrel Rods
Part No. —See table
Mandrel rods are for use with the HB632 Model Bender
and Exactol Models 412/424 benders. Mandrel rods (as
well as mandrel rod stop assembly) are required when
using mandrels. Overall mandrel rod lengths are ap-
proximately eight feet. Mandrel rod diameters are deter-
mined by tube I.D. (See Table 3.)
Mandrel Rod Stop Assembly
For use with Model HB632 Bender
The mandrel rod stop assembly holds and supports
the end of the mandrel rod in alignment with the tubing.
The rod stop assembly is bolted to the other end of
bender table. It keeps the mandrel and rod in alignment
when mandrel bending. The stop screws can be ad-
justed for correct length and positioning of the mandrel
in the tubing.
Part Name
Part No.
Mandrel Rod Stop Assembly
(for Bender Model HB632) .......................... 631141
Universal Side Angle Indicator
Part No. 520520
Accurately determines the angle between tube bends
in different planes, and keeps out-of-plane angles accu-
rate when making repeated bends. Incorporates a
large, easy-to-read vernier dial. Maximum 3/4" O.D.
tubing can be used if the tubing must be extended
through the indicator. Maximum 1 1/2" O.D. tubing can
be used if the end of tube is held in the clamp jaw.
Table 3 –Mandrel Rod Sizes
Part No. 631141 –HB632 Mandrels, Mandrel Rods and Rod Stop
Assembly
Part No. 520520 –Universal
Side Angle Indicator
Part No.
Mandrel
Rod Dia.
(
in.
)
Tube I.D.
520506 1/4 0.283 –0.362
520507 5/16 0.363 –0.484
520508 13/32 0.485 –1.489
Bender Table –520515
Heavy, all steel construction, strongly braced to keep
bender, mandrel rod and rod stop assembly rigidly
braced. Length 10 feet; weight 421 lbs.
900085 –Pump (std.)
974671 –High
Flow Pump
Close Bend Radius
Blocks
Standard Radius Blocks
660221 –Radius Block
Adapter Plate
Tie Bar
Slide Blocks Clamp
Blocks

3Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4391-B26 Hydraulic Tube Bender
FluidConnectors
Threaded Pins and Seal-Lok Adapters for Close
Bend Radius Blocks
Radius Blocks
When using radius blocks 631057-112, 631060-128, 974330 and 974350, first
install the radius block adapter plate over the king pin, and then mount the
radius block upon it, as shown above.
Close bend radius blocks — These blocks have a threaded pin which threads
directly into both Triple-Lok and Ferulok (Seal-Lok requires an adapter) tube
fitting nuts, permitting a first bend very close to the end of the tube.
Inch Radius Block Chart
*Radius to tube centerline. **Note: Sizes 20 and 24 close bend radius blocks requires the removal of the clamp arm before installation.
Metric Radius Block Chart
Inch Pipe Size Radius Block Chart
in. mm in. mm in. mm in. mm
63/89.5
540502 1 1/4 31.8 590512-18 1 1/8 28.6 ———
8 1/2 12.7 530763 1 1/4 31.8 590515-24 1 1/2 37.5 530597 1 1/4 31.8
10 5/8 15.9 530764 1 1/2 37.5 590518-30 1 7/8 47.6 530601 1 1/2 38.1
12 3/4 19.0 530765 1 3/4 43.8 590521-36 2 1/4 57.2 530605 1 3/4 44.5
14 7/8 22.2 530766 2 50.2 590523-42 2 5/8 66.7 530609 2 50.8
16 1 25.4 ———
590524-48 3 76.2 530613 3 76.2
18 1 1/8 28.6 530768 3 1/2 88.9 590526-54 3 3/8 85.7 530617 3 1/2 88.9
20 1 1/4 31.8 ———
590527-60 3 3/4 95.3 530621 3 3/4 95.2
24 1 1/2 38.2 530770 5 127.0 590530-72 4 1/2 114.3 530625 5 127.0
28 1 3/4 44.5 ———
631057-112 7 177.8 ———
32 2 50.8 ———
631060-128 8 203.2 ———
Radius Block –Close Bend**
Part No.
Radius*Tube O.D.
Part No.
Radius*
AND10111 Standard MS33611 Standard
Part No.
Radius*
Size
Nominal Pipe
Size
(
in.
)
O.D.
(
in.
)
Part No.
Bend Radius
(
in.
)
Max. Pipe
Schedule
3/8 0.675 974325 2 1/4 80
1/2 0.840 974326 2 5/8 160
3/4 1.050 974327 3 1/4 80
1 1.315 974328 480
1 1/4 1.660 974329 580
1 1/2 1.900 974330 640
Tube
O.D.
(
in.
)
Threaded
Pin
Part No.
Seal-Lok
Adapter
Part No.
1/2 930420-8 930421-8
5/8 930420-10 930421-10
3/4 930420-12 930421-12
1930420-16 930421-16
1 1/4 930420-20 930421-20
1 1/2 930420-24 930421-24
Accessories for Close Bend
Radius Blocks
***Note: Size 38mm close bend radius blocks requires
removal of the clamp arm before installation.
Part No. Radius (mm) Part No. Radius (mm)
10 810023 32 ——
12 780175 32 780185 32
14 780176 38 780186 38
15 780177 38 780187 38
16 780178 38 780188 38
18 780179 44 780189 44
20 780180 44 780190 44
22 780181 89 ——
25 780182 100 ——
30 780183 128 ——
32 780184 128 ——
35 974344 105 ——
38 530770 127 530625 127
38 590530-72 114.3 ——
42 974347 128 ——
50 974350 150 ——
Tube O.D.
(mm)
Close Bend Radius Blocks***Standard Radius Blocks

4Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4391-B26 Hydraulic Tube Bender
Slide Blocks Clamp Blocks
Size
Tube O.D.
(
in.
)
Part No.
63/8
864276
8-12-16-24 1/2, 3/4, 1, 1 1/2 520516
10-14-18-20 5/8, 7/8, 1 1/8, 1 1/4 520518
28 1 3/4 631063
32 2 631066
Size
Tube O.D.
(
in.
)
Part No.
10-12-14-16 10-12-14-16 790016
15-16-18-20 15-16-18-20 780192
22-25-30-32 22-25-30-32 780193
35 35 974345
38 38 520516
42 42 974348
50 50 974351
Nominal Pipe
Size
(
in.
)
O.D.
(
in.
)
Part No.
3/8, 1/2, 3/4 0.675, 0.840, 1.050 974331
1 1.315 974336
1 1/4 1.660 974340
1 1/2 1.900 974342
Nominal Pipe
Size
(
in.
)
O.D.
(
in.
)
Part No.
3/8, 1/2, 3/4 0.675, 0.840, 1.050 974332
1 1.315 974338
1 1/4 1.660 974341
1 1/2 1.900 974343
Size
Tube O.D.
(
in.
)
Part No.
63/8
864266
8-12-16-24 1/2, 3/4, 1, 1 1/2 631092
10-14-18-20 5/8, 7/8, 1 1/8, 1 1/4 631093
28 1 3/4 027418-28
32 2 027418-32
Slide Block Clamp Block
Slide Block Clamp Block
Slide Block Clamp Block
Inch Tube Sizes
Metric Tube Sizes
IPS Tube Sizes
Size
Tube O.D.
(mm) Part No.
10-12-14-16 10-12-14-16 790017
15-16-18-20 15-16-18-20 780195
22-25-30-32 22-25-30-32 780196
35 35 974346
38 38 631092
42 42 974349
50 50 974352

5Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4391-B26 Hydraulic Tube Bender
FluidConnectors
Instructions for Medium to Heavy Wall Tube Bending
The bender is shipped completely assembled except
for attaching a pump, hose and installing selected
bender dies.
Step 1: Mounting Tube Bender
Position bender centered across the end of bender
table and bolt securely in place. The Parker bender
table has pre-drilled holes for bender attachment.
3 bolts, nuts and washers required for mounting bender
Step 2: Connect Pump to Bender
Connect the hose to the pump (3/8" pipe end) and then
connect hose to the bender. Be careful not to twist the
hose when tightening. Use a pipe sealant on the pipe
threads. The make-up for the pipe end is 2 to 3 turns
from finger tight. The assembly torque for the Seal-Lok
hose end that is connected to the bender is 360 in. lbs.
Step 3: Select and Install Radius Block
Select the proper radius block according to the chart
on page 3. Then install the selected radius block on
the king and drive pins with the open end of the block
toward the clamp arm.
Radius blocks are accurately milled and bored to slip
easily onto posts. Light lubrication of the posts will aid
assembly. When handling radius blocks, as well as the
slide and clamp blocks, care should be taken to avoid
nicking the grooved surfaces.
Step 4: Mark the Tube
The first bend is easy. Simply measure from the end of
the tube to the desired length of the centerline* of the
first bend.
*For information on tube bending, centerline measurement, and back-bending
compensation, see Parker Principles of Tube Line Fabrication, Manual 4306-
B5.
4
3
2
1

6Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4391-B26 Hydraulic Tube Bender
Step 5: Select Slide and Clamp Block Grooves
Select the proper groove of the slide block and clamp
block for the outside diameter of tube (sizes are marked
on end of each block). Lubricate the slide block to facili-
tate its sliding. Place the clamp block in its vise. Do not
lubricate the clamp block. It’s held in place magnetically.
Step 6: Rapid Positioning
Both the clamp and slide block vise screws feature
rapid positioning, with a quick acting cam lock mecha-
nism. To use, pull the respective cam lock mechanism
to disengage, push the screw forward, then push the
cam lock forward to engage.
Step 7: Positioning the Tube
Advance the clamp block vise as described above.
Then position the tube in the clamp block so that the
mark is tangent to the radius block at the desired angle
(90°for 90° bend; 45 °for 45°bend, etc.). Use triangles
to obtain accurate results (see diagram). The tubing
should be positioned in the bender so that the end
measured from, or “measurement end”, is to the left as
you face the bender.
For 180°bends, position the mark similar to 90°bends.
On long lengths of tubing, support is recommended to
prevent sag.
Step 8: Clamp the Tube
When in the proper position, clamp the tube with the
clamp block vise. Next, advance the slide block vise us-
ing the rapid positioning sequence described.
Rotate the slide block retainer to the proper height and
insert the slide block. Then bring into snug position
against the tube, but not with so much pressure as to
prevent the block from sliding freely. The clamp block
and slide block should not be touching.
8
7
6
5

7Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4391-B26 Hydraulic Tube Bender
FluidConnectors
Step 9: Using the Tie Bar (when required)
If the tube is over 1" O.D. (25mm or 1/2 IPS), or heavy
wall, or if mandrel bending, the tie bar must be used to
prevent tube slippage and the clamp arm from flexing.
Step 10: Setting Bend Angle
Set the angle to be bent on the angle indicator by
turning the angle adjusting handle on the back of the
bender housing. Generally add two to five degrees to
the angle you wish to bend to compensate for the
spring-back in the tube.
Step 11: Bending the Tube
To bend the tube, start the pump and close the valve.
CAUTION — Should it become apparent that the bend
is too long for the slide block, stop the bender and
loosen the slide block vise. Return the slide block to
its original position. Retighten the vise screw and
complete the bend.
When the preset angle has been reached, shut off the
pump.
Step 12: Completed Bent Tube
Remove the tie bar, if in use, retract the slide and
clamp vises, and pull the tube out from the radius block
and lift up. Your tubing is bent, without flattening or
cracking.
Releasing system pressure by opening the valve will
relieve tension in the bender and the clamp arm will
return to its original position.
12
11B
9
10
11A

8Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
FluidConnectors
Bulletin 4391-B26 Hydraulic Tube Bender
Instructions for Thin Wall Tube Bending with
Mandrel Equipment
When to Mandrel Bend
For short radii bends and thin-wall tubing, mandrel
equipment is necessary to prevent wrinkling, collaps-
ing, or kinking of the tube. The mandrel supports the
tube wall on the inside and maintains a full cross-sec-
tion in a smooth bend. This is important and should be
included as an indispensable part of bending equipment.
The rule that is generally followed to determine whether
or not a mandrel is necessary is as follows: When the
wall thickness of the tube to be bent is 7% or more of
the tube O.D., a mandrel is usually not necessary. On
wall thicknesses that ranges between 4-6% of the tube
O.D., it is necessary to use a mandrel to avoid wrinkling
and flattening in the bend area. These calculations are
based on a bend radii of between three and four times
the tube O.D.
Since mandrel equipment must be accurately aligned and
rigidly held, we recommend the use of the bender table.
Mandrel Rod Stop Assembly
This assembly holds the end of the mandrel rod in
proper alignment with the tubing and bender. It bolts
to the back end of the table. A scale permits accurate
alignment of the stop screws. (Although not an extrac-
tor, this assembly is necessary to secure the mandrel
and rod during the bending process.)
The Parker bender table has pre-drilled holes for the
bender and rod stop assembly attachment. These
pre-drilled holes insure proper bender and rod stop
assembly alignment.
Step 1: Mandrel Stop Rod Assembly
Installation
The mandrel rod stop assembly must be rigidly
mounted to the bender table in proper alignment with
the bender. Zero (“0”) at the end of the mandrel rod
stop assembly scale must be in line with the center of
the king pin.
in. mm in. in. in. in. in.
63/89.5924417 Solid —.035 .042 ——
81/212.7924417 Solid —.035 .042 .049 —
10 5/8 15.9 924417 Solid .035 .042 .049 .058 .065
12 3/4 19.0 924417 Solid .035 .042 .049 .058 .065
14 7/8 22.2 924417 Solid .035 .042 .049 .058 .065
16 1 25.4 924417 Solid .035 .042 .049 .058 .065
18 1 1/8 28.6 924417 Solid —.049 .058 .065 —
20 1 1/4 31.8 924417 Solid —.049 .058 .065 —
24 1 1/2 38.1 924417 Solid .049 .058 .065 .083 —
Wall Thickness
Size Tube O.D. Part No. Type in. mm
1/4 1/4 6.4 .283 (7.2) to .362 (9.2) 520506 Solid
5/16 5/16 7.9 .363 (9.2) to .484 (12.3) 520507 Solid
13/32 13/32 10.3 .485 (12.3) to 1.489 (37.8) 520508 Solid
TypePart No.
Mandrel
Rod Size
Mandrel Rod Dia. Tube I.D.
inches
(
mm
)
Mandrel Specifications and Data Mandrel Rod Specifications and Data
To order mandrels, specify part number, size and wall thickness.
Example: 924417-12X058
1A
1B 2