Making A Bend - Greenlee 881GX Cam Track Manual De Instrucciones

Making a Bend

1. Set up the 881 Hydraulic Bender according to its
instructions in this manual and use accessories
specific to the conduit to be bent.
2. Observe work site and select the size and type of
conduit. The conduit determines what set of table
numbers are used for finding the bend marks.
3. Determine the Stub Height (H) and the Bend Angle.
(Fig.18) These numbers determine the appropriate
numbers needed from the bending tables. Different
types of bends use different tables and variables
follow the instructions for the type of bend to know
what variables are needed.
TARGET
STUB
LENGTH(H)
Figure 18
4. Mark the conduit by following the instruction for the
type of bend and using the appropriate tables. The
Special Bending Tables are used unless otherwise
specified.
5. Insert conduit between saddle and shoe. Line up
the appropriate bending mark with the saddle lip.
and make sure the follow bar is touching the back
of the saddle. (Fig.19)
Bending
Mark
Saddle Lip
Figure 19
CONDUIT SIZE
DEDUCT
MIN. STUB LENGTH (H)
MIN. DISTANCE FROM END OF CONDUIT
DEDUCT
MIN. STUB LENGTH (H)
MIN. DISTANCE FROM END OF CONDUIT
16
ANGLE
TABLE 2 —MIN. STUB HEIGHT, DEDUCT (IN.)
2-1/2
21-1/2
24
2-1/2
IMC RIGID
21-1/2
24
2-1/2
© 2022 Greenlee Tools, Inc.
Cam Track® Hydraulic Bender
6. Snug-up bender. Advance the ram until the conduit
cannot shift but before the conduit is actually bent.
7. Calculate Z position (see Ram Travel) for desired
bend angle and move rubber ring on the ram scale
to mark.
8. Advance ram to Z-position.
9. Reverse ram until fully retracted to release the con-
duit. Remove conduit and check bend.
Bending Marks
Less than 90° Bend Marks
1. In the appropriate Special Bending Table,use the
desired stub height (H) and angle to find Y. (Fig.20)
2. Measure Y distance from the end of the conduit and
place the bending mark here. (Fig.21)
H
ANGLE
Figure 20
90° Bend Marks
1. Make MARK 1 by measuring to the Target Stub
Length (H). (Fig.22)
2. Make MARK 2 by measuring the DEDUCT (Table
2) from MARK 1 towards the threads. (Fig.23) The
distance between MARK 2 to the end of the conduit
cannot be less than the MIN. STUB LENGTH.
H
90 o
Figure 22
3
EMT
24
27
3
24-1/4
26-3/4
2-1/2
Y
MARK
Figure 21
TARGET
STUB
LENGTH
DEDUCT
MARK MARK
2 1
Figure 23
3-1/2 4
27-3/4 32-1/4
31-1/4 36-1/4
3-1/2 4
28-1/4 32-1/2
30-3/4 35
2-1/2 2-1/2
52093598 Rev 00