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Laying Out Offset Bends
An offset bend is used to route the conduit around an
obstruction. To make an offset, two bends are required.
The operator must measure the height of the offset and
select the angle of the offset. The distance between the
two bends is the center-to-center distance.
CENTER-TO
OF BENDS
CENTER-TO
CENTER
OF BENDS
1. Measure the obstruction.
2. Determine the angle of the offset bends.
3. Calculate the center-to-center distance. See the
Greenlee Offset Multiplier and Shrink Table.
Note: If working toward an obstruction, calculate the
amount of shrink. See Calculating "Shrink" in
this manual.
4. Mark the conduit.
5. See bending instructions under "Bending Conduit"
in this manual.
The following Offset Table shows the center-to-center distance for selected amounts of offset for commonly used bends.
OFFSET ➞
MAX
CONDUIT
SIZE
15˚
CENTER
TO
CENTER
Common
MAX
CONDUIT
Offset
SIZE
30˚
CENTER
Bends
TO
CENTER
MAX
CONDUIT
SIZE
45˚
CENTER
TO
CENTER
Greenlee Tools, Inc.
CENTER
OFFSET
HEIGHT OF OFFSET
2
4
6
3/4
1-1/2
7-3/4
15-7/16 23-3/16 30-15/16
3/4
1
8
12
1/2
8-1/2
Calculating the Center-to-Center Distance
To calculate the center-to-center distance of commonly
used offset bends, multiply the amount of offset by the
appropriate offset multiplier:
Offset Multipliers
15˚
22-1/2
30˚
45˚
60˚
To use this table: Measure the obstruction and
determine the angle of the offset. Find the angle of
the offset in the left column; multiply the height of the
obstruction by the corresponding multiplier in the right
column to find the center-to-center distance.
Example:
5 inches of offset
15-degree bend
Multiplier for 15˚:
Multiply the amount
of offset by the multiplier
to find the center-to-
center distance:
Round off to the nearest
common fraction:
Offset Table
8
10
12
38-5/8
46-3/8
1-1/2
16
20
24
1
1-1/4
1-1/2
11-15/16
14-1/8
16-15/16 19-13/16
8
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
880 Hydraulic Bender
3.86
2.6
2
1.4
1.2
3.86
5 x 3.86 = 19.3
19-5/16
14
16
18
2
54-1/16 61-13/16 69-9/16
77-1/4
2
28
32
36
2
22-5/8
25-7/16
28-1/4
20
22
85
40
44
31-1/8
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