Laying Out One-Shot 90° Bends - Greenlee 777 Mode D'emploi

Laying Out One-Shot 90-Degree Bends
1. Measure the length of the required stub. See Figure 1.
2. Find the minimum stub length for that diameter of
conduit on the Deduct and Minimum Stub Length
Table. The stub you require must be equal to or longer
than the minimum stub length.
3. Measure and mark the stub length on the conduit.
This is mark 1. Subtract the deduct from the stub
and mark the conduit. This is mark 2, or the bending
mark. See Figure 2.
4. Insert the conduit into the bender so that mark 2, the
bending mark, lies at the center of the shoe.
5. Bend the conduit. To achieve the desired angle, refer
to the Ram Travel Table for Common Bends in this
manual. See Figure 3.
Deduct and Minimum Stub Length Table
1/2 3/4
CONDUIT SIZE
1-5/16 1-1/2
DEDUCT
MINIMUM
12-1/16 12-1/16
STUB LENGTH
FIGURES ARE APPROXIMATE
Greenlee Tools, Inc.
1 1-1/4 1-1/2 2
1-7/8 2-3/8 2-3/4 3-1/4
14-1/8 15-11/16 15-3/4 17-11/16
777 Segment Bender
JUNCTION
BOX
LENGTH
OF
STUB
Figure 1
LENGTH OF STUB
Figure 2
JUNCTION
BOX
MARK 2
MARK 1
FLOOR
Figure 3
7
4455 Boeing Dr., Rockford, IL 61109 815-397-7070
FLOOR
MARK 2 MARK 1
DEDUCT