6000-Series Super Tugger
®
Cable Pullers
Greenlee Tools, Inc.
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
15
Cable Pulling Principles
(cont’d)
Typical Resultant Force at Sheave
Cable Pulling Forces
(cont’d)
At the Sheaves
Sheaves are used to change the direction of the pull.
A change in direction creates a new
resultant force
t
hat may be
greater than
the cable puller’s maximum
pulling force. This new resultant force exerts itself on the
sheaves, sheave anchoring system, and support struc-
tures illustrated.
The resultant amount of force depends on the angle of
the change in direction. A brief table is provided here;
for more details, see IM 1363 (99929988).
Resultant Force Table for the Super Tugger
(28.9 kN or 6500 lb Maximum Pulling Force)
Illustration
Angle of Change
in Direction
R
180°
0 (0)
150°
15 (3380)
135°
22.3 (5005)
120°
28.9 (6500)
90°
40.8 (9165)
60°
50.0 (11,245)
45°
53.5 (12,025)
30°
55.8 (12,545)
0°
57.8 (13,000)
Resultant Force =
22.3 kN (5005 lb)
135°
