Summary Of Cable Pulling Principles; Planning The Pull - Greenlee 2001 Instruction Manual

Cable Pulling Principles (cont'd)

Summary of Cable Pulling Principles

• A cable pulling system consists of many components
that work together to accomplish a pull.
• The cable puller is rated by its maximum pulling
force; every other component is rated by its maximum
rated capacity. The maximum rated capacity of every
component must meet or exceed the maximum pulling
force of the cable puller.
• The cable puller must overcome two types of resis-
tance: gravity and friction. The puller's capstan, the
pulling rope, and the operator tailing the rope work
together to produce pulling force.
• The cable puller exerts force on every component of
the cable pulling system, including the anchoring
systems and the support structures.
• Energy is stored in a rope when the load causes
the rope to stretch. Failure of the rope or any other
component can cause a sudden release of energy.
Replace any rope that is worn or damaged.
• Carefully select the number or wraps of rope around
the capstan before starting the pull.
• Control the pull by tailing the rope. Be familiar with the
interaction of the rope and capstan.
• Do not allow a rope overlap to develop.
Greenlee / A Textron Company
2001-Series Easy Tugger Cable Pullers

Planning the Pull

• Pull in a direction that will require the lowest amount of
pulling force.
• Plan several shorter pulls rather than fewer longer
pulls.
• Locate the puller as close to the end of the conduit as
possible to minimize the amount of exposed rope
under tension.
• Place each component so that the pulling forces are
used effectively.
• Select an anchoring system: adapter sheaves, which
are preferred, or the floor mount.
• Verify that each component has the proper load rating.
• Inspect the structural supports. Verify that they have
enough strength to withstand the maximum forces that
may be generated.
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