Greenlee 881GX Cam Track Manual De Instrucciones página 17

Offsets
An offset is made to avoid an obstruction blocking the run of the conduit. To make an offset, two equal bends are
required in opposite directions to create a rise that will go around the obstruction. Depending on the end position
desired, the mark positions are based off different numbers in the tables.
Center-to-Center Offset (Fig.24)
1. Select the size and type of conduit. Measure the
height (H) of the obstruction. Use the column with
an offset that will overcome the obstruction to, find X
and A-Measurements.
2. Make MARK 1 by measuring the distance from end
of conduit to desired start of 1st bend.
3. Make MARK 2 on conduit by subtracting X (Table 3)
from MARK 1.
The distance from MARK 2 to the end of the conduit
cannot be less than the MIN. DIST. FROM END OF
Conduit to avoid crushing threads and bad quality
bends.
4. Find the "A" distance (Table 4). Make MARK 3 on the
conduit by measuring this distance from MARK 2.
5. Aline MARK 2 with outside edge of saddle for the
1ST Bend. Advance ram to calculated Z-Position for
desired angle.
6. Rotate conduit 180˚. Aline MARK 3 with outside edge
of the saddle for the second bend.
TABLE 3 "X" DISTANCE (in.)
CONDUIT SIZE
X
6-5/32
EMT
MIN. DIST.
FROM END
OF CONDUIT
X
6-5/32
IMC/
MIN. DIST.
RIGID
FROM END
OF CONDUIT
TABLE 5 "OFFSET"
MULTIPLIERS
BEND ANGLE
15°
30°
45°
52093598 Rev 00
2-1/2 3 3-1/2
5-3/4 6-9/16 8-1/2
2-1/2 3 3-1/2
6 7 8-3/4
2-1/2 2-1/2 2-1/2 2-1/2
MULTIPLIER
3.86
2
1.4
© 2022 Greenlee Tools, Inc.
Cam Track® Hydraulic Bender
H
TABLE 4 "A" DISTANCE* (in.)
(VALUES ARE APPROXIMATE)
4
For offset distances not on this table, calculate "A" by
multiplying the appropriate multiplier (Table 5) to the desired OFFSET.
O
15°
F
F
MAX
S
4
COND.
E
SIZE
T
2
3/4
4 1-1/2
6 3-1/2
8 4
10
4
12
4
14
4
16
4
18
4
20
4
22
4
* The "A" values on this table are the same for any conduit less
than the maximum. Values in gray are for reference only. The
881 Bender cannot bend conduit less than 2-1/2".
2nd
BEND
CENTER
TO
CENTER
BEND
ANGLE
A
MARK MARK
3 1
Figure 24
30°
MAX
A COND. A
SIZE
7-3/4
15-7/16 3/4 8
23-3/16 1-1/2 12
30-15/16 2 16
38-5/8 3-1/2 20
46-3/8 4 24
54-1/16 4 28
61-13/16 4 32
69-9/16 4 36
77-1/4 4 40
85 4 44
1st
MARK
2
X
LENGTH
TO 1st
BEND
45°
MAX
COND. A
SIZE
1/2 8-1/2
1 11-5/16
1-1/4 14-1/8
1-1/2 16-15/16
2 19-13/16
2-1/2 22-5/8
3 25-7/16
3-1/2 28-1/4
4 31-1/8
17