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DANGER: Do not handle pressurized hoses. Escaping
oil under pressure can penetrate the skin, causing
serious injury. If oil is injected under the skin, see a
doctor immediately.
WARNING: Only use hydraulic cylinders in a coupled
system. Never use a cylinder with unconnected
couplers.
If
the
overloaded, components can fail catastrophically causing
severe personal injury.
WARNING: BE SURE SETUP IS STABLE BEFORE
LIFTING LOAD. Cylinders should be placed on a flat
surface that can support the load. Where applicable, use
a cylinder base for added stability. Do not weld or
otherwise modify the cylinder to attach a base or other support.
Avoid situations where loads are not directly centered
on the cylinder plunger. Off-center loads produce
considerable strain on cylinders and plungers. In
addition, the load may slip or fall, causing potentially dangerous
results.
Distribute the load evenly across the entire saddle
surface. Always use a saddle to protect the plunger.
IMPORTANT: Hydraulic equipment must only be
serviced by a qualified hydraulic technician. For repair
service, contact the Authorized ENERPAC Service
Center in your area. To protect your warranty, use only
ENERPAC oil.
WARNING: Immediately replace worn or damaged
parts by genuine ENERPAC parts. Standard grade parts
will break causing personal injury and property
damage. ENERPAC parts are designed to fit properly and
withstand high loads.
3.0 SPECIFICATIONS (see Specification Table)
4.0 BENDER ASSEMBLY (see Figure 1)
1.
Thread hydraulic cylinder into cylinder support block on
bending frame.
2.
Attach hose(s) to pump valve. Connect hose (1) to cylinder
port (1); hose (2) to cylinder port (2). NOTE: hose (2) is used
with STB-202 series benders only.
3.
Select bending shoe for pipe to be bent. Each shoe is marked
for size and has an arrow, indicating the center point of bend
to be made.
4.
Insert and lock selected bending shoe on cylinder plunger
with U-shaped lock pin.
cylinder
becomes
extremely
Specification Table
Nominal
Wall
Schedule
pipe
Thickness
Pipe*
size
(outside ø)
(in)
(in)
.109
40
.147
80
1
⁄
2
(.840)
.187
160
.294
160
.113
40
.154
80
3
⁄
4
(1.050)
.218
160
.308
DEH
.133
40
1
.179
80
(1.315)
.250
160
.358
DEH
.140
40
1
1
⁄
4
.191
80
(1.660)
.250
160
.342
DEH
.145
40
1
1
⁄
.200
80
2
(1.900)
.281
160
.400
DEH
.154
40
2
.218
80
(2.375)
.343
160
.203
40
2
1
⁄
2
.276
80
(2.875)
.375
160
3
.216
40
(3.500)
.300
80
1
3
⁄
.226
40
2
(4.000)
.318
80
4
.237
40
(4.500)
.337
80
*Schedule pipe: 40=standard; 80=extra heavy; 160=double extra heavy (mild
steel pipe only)
DEH=double extra heavy (slightly thicker than 160);
WS=can be bent by moving pivot shoes to the holes for the next large pipe size.
Step A – Bender Assembly
Nomenclature
Hydraulic Hose (bend)
Hydraulic hose (eject)
(STB202 series)
Bending
Pivot Pin
Shoe
(2 req'd.)
Shoe
Locking Pin
Bender Frame
Optic Angle Gauge
Figure 1, Bender Assembly
2
Pipe
STB-101
STB-101
Bend
1-2
Radius
One Shot
1/2
1/2
-2
2
-4
(in)
One Shot
Sweep
Yes
-
Yes
-
7
2
⁄
8
7/8
2
WS
-
WS
-
Yes
-
4
Yes
-
4
WS
-
WS
-
Yes
Yes
Yes
Yes
5
1
⁄
8
WS
WS
-
WS
Yes
Yes
Yes
Yes
7
6
⁄
16
WS
WS
-
WS
Yes
Yes
Yes
Yes
5
7
⁄
16
WS
WS
-
WS
Yes
Yes
5
8
⁄
Yes
Yes
16
-
WS
-
Yes
1
9
⁄
-
WS
2
-
WS
-
Yes
1
11
⁄
4
-
WS
-
Yes
1
15
⁄
2
-
WS
-
Yes
3
17
⁄
4
-
-
Hydraulic Cylinder
Cylinder Support Block
Pipe Eject Holes
Pipe Bending
Holes
Over-bend
Correction
Pivot Shoe
Holes
(2 req'd.)
STB-101
1/4
1
-4
One Shot
-
-
-
-
-
-
-
-
-
-
-
-
Yes
Yes
Yes
WS
Yes
Yes
Yes
WS
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
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