GB BOSA57 User Manual
Gardner
Bender
Instruction
!
IMPORTANT
BOS57 / BOSA57
No-Dog
Sheet
IMPORTANT: RECEIVING INSTRUCTIONS: Visually inspect all components for shipping damage. If any shipping
damage is found, notify carrier at once. Shipping damage is NOT covered by warranty.The carrier is responsible for
all repair or replacement costs resulting from damage in shipment.
IMPORTANT USER SAFETY AND PROTECTION: In setting up systems to fit your operations, care must be taken to
select the proper components and design to insure appropriate integration with your operations and existing
equipment and that all safety measures have been taken to avoid the risk of personal injury and property damage
from your application or system.
GB ELECTRICAL, INC. CANNOT BE HELD RESPONSIBLE FOR DAMAGE OR INJURY CAUSED BY UNSAFE
USE, MAINTENANCE OR APPLICATION OF ITS PRODUCTS. Please contact GB's technical service depar tment
for assistance if you are in doubt as to the proper safety precautions essential to designing and setting up your
particular application.
Offset Bender
CAUTION
!
Model BOS57 and BOSA57 are designed for bending 1⁄2" EMT, IMC, Rigid and 3⁄4" EMT Conduit.
ATTEMPTS TO BEND ANY OTHER SIZES OR TYPES OF CONDUIT WILL DAMAGE THE BENDER
AND VOID ALL WARRANTY.
Upon initial receipt
Fully assembled
TO AVOID POOR QUALITY BENDS, BE SURE BRACKET TO FRAME MOUNTING HARDWARE IS
TIGHTENED SNUGLY TO PREVENT SIDE-TO-SIDE MOVEMENT. CHECK HARDWARE PERIODICALLY
OR IF EXCESS BRACKET MOVEMENT IS ENCOUNTERED.
1
!
CAUTION
Initial Set-up Procedures
1. Remove all packing materials. Remove the
bender handle from the lower frame by cutting
the cable ties securing the handle to the frame.
See Figure 1.
The threads should pass all the way through and
be flush with the back side of the yoke.
See Figure 3.
Figure 3
Figure 1
3. Once the initial set-up is complete, the bender
will require specific steps to accomplish various
2. Install the bender handle by threading it
conduit bends. See Figure 4.
completely into the yoke.See figure 2.
Figure 4
Figure 2
DO NOT ATTEMPT TO BEND CONDUIT OTHER THAN 1⁄2" EMT (THINWALL), IMC AND RIGID OR 3⁄4"
EMT CONDUIT. USE OF ANY OTHER SIZES OR TYPES OF CONDUIT WILL DAMAGE THE BENDER
AND COULD CAUSE INJURIES.
Operating Procedures
1. Bending conduit is accomplished using jaws on the frame to stabilize the conduit. The jaws are
designed to accomidate specific types and sizes of conduit.
2. Determine the size and type of conduit, and the offset height required. Review the bracket decals to
locate the correct side of the frame to use. See Figure 5.
Patent pending
3
1
+
⁄2"
Figure 5
1
⁄2" EMT
Offset Height Range
Add to Height for Springback
Pin Position
2
0"-21⁄2"
3
+
⁄8"
0"-11⁄2"
0"-3⁄4"
1
1
+
⁄8"
1
0"-3⁄4"
1
+
⁄4"
2
0"-2"
Pin Position
Offset Height Range
Add to Height for Springback
3
+
0"-3"
⁄16"
3
⁄4" EMT
3
5
+
⁄16"
Patent pending
2
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