Greenlee 881 Manual De Instrucciones página 24

Table 4—Laying Out Two-Shot 90° Bends for 3-1/2" and 4" Conduit (881 Only)
1. Measure the length of the required stub.
2. Find the Minimum Stub Length on Table 2: Deduct,
Stub Dimensions, and Minimum Distance from End
of Conduit. 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.
4. Find the Deduct on Table 2. Subtract the Deduct
from Mark 1 and make a new mark. This is Mark
2, or the first bending mark. Find the Minimum
Distance from End of Conduit in Table 2; be sure
that Mark 2 is at least this distance from the end of
the conduit.
5. Measure and make Mark 3, or the second
bending mark:
• For 3-1/2" conduit, Mark 3 must be 14-1/2" from
Mark 2.
• For 4" conduit, Mark 3 must be 15-1/2" from Mark
2.
6. Refer to the tables and "First Bend" figure on this
page. Using the suggested amount of ram travel,
align Mark 2 with the outside edge of the saddle
and bend the conduit.
7. Align Mark 3 with the outside of the saddle.
Note: A portion of the previous bend will fall inside
the shoe.
8. Bend the conduit until the 90° bend is complete.
MARK
NO. 1
Greenlee Tools, Inc.
STUB LENGTH
MARK
NO. 3
DEDUCT
MARK
NO. 2
881 and 881CT Hydraulic Benders
CONDUIT
EMT
SIZE
RAM 3-1/2
TRAVEL
CONDUIT
IMC
SIZE
RAM 3-1/2
TRAVEL
CONDUIT
RIGID
SIZE
RAM
3-1/2
TRAVEL
FIRST BEND
MARK NO. 2
The 45° two-shot shoes and follow bars are not
interchangeable with the 90° one-shot shoes and
follow bars. See Illustration below.
This Shoe
Profile
This Shoe
Profile
24
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
FIRST BEND
10-3/16
4 8-3/16
FIRST BEND
11-1/4
4 9
FIRST BEND
11-1/8
4 8-5/16
SECOND BEND
MARK NO. 3
Matches
Long (over 36")
Follow Bar with
Side Pockets
Matches
Short Follow Bar
with Smooth Sides
90°
9-3/4
8-3/16
90°
10-11/16
9-1/16
90°
10-1/2
8-7/8