Gardner Bender BOS(A)57 No-Dog Offset Bender User Manual
Page 3
3. Each bracket decal contains three vital pieces
of information.
a. Pin Position: Three locations to insert
retaining pin, which will produce different
heights of offset bends.
b. Offset Height Range: The range of offset
height that this pin hole position will
produce. (ie. 0-
3
⁄
4
", 0-2" and 0-3")
c. Add to Height for Springback: The fraction
with a plus sign indicates the amount to
add to the offset height to correct for
conduit springback.
4. Select the correct hole location on the bracket,
pull the retaining pin and move the bracket until
the selected hole lines up with the frame hole.
Insert the retaining pin. See Figure 6.
7. Lower the bender handle and complete the
bend by pushing down until the handle stops
moving. See Figure 9A. Raise the handle and
remove the conduit. See Figure 9B.
6. Set the bend stop screw adjustment by turning
the screw until the distance between the bottom
of hex head and the bottom of the frame is the
offset height plus the fractional number on the
decal. See Figure 8.
Figure 7
5. Raise the bender handle and insert the conduit
into the correct size bending jaws (check bend
bracket decals). See Figure 7. Be sure the
conduit extends a minimum of 2" beyond the jaw.
Figure 6
Example: Offset height required = 2 inches
Conduit is
1
⁄
2
" EMT.
Hole Location is #2
Fraction added is +
1
⁄
8
", therefore
2"+
1
⁄
8
" = 2
1
⁄
8
"
2
1
⁄
8
" is stop screw measurement for
step 6.
Figure 8
Figure 9A
Figure 9B
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ZRPS-0135 3/29/00 4:02 PM Page 3