5
Wire Rope Selection
Each winch model can have a variety of wire rope sizes
installed by the user. The maximum wire rope size is shown
on the nameplate. When a larger diameter wire rope is
used, the length of wire rope installed on the drum will be
shorter. In some situations, the winch can create a tension
in the wire rope that is greater than the strength of the
wire rope. The user must be careful to select a wire rope
that has enough strength and length for the job.
During operation of the winch, the
operator must know or estimate the line
pull and make sure that the line pull is
within the capacity of the winch and the
specifi cations of the wire rope installed
on the drum. A broken wire rope under
high tension can return suddenly in the
direction of the winch and cause injury
and damage.
Figure 3 - Drum Line Approximate Capacities
Wire Rope
Diameter
Capacity for
10 in (254 mm)
Drum Diameter
Capacity for
7 in (178 mm)
Drum Diameter
3/4 in (19 mm) 399 ft (121 m) 425 ft (129 m)
7/8 in (22 mm) 287 ft (87 m) 305 ft (93 m)
1.0 in (25 mm)* 223 ft (68 m) 237 ft (72 m)
Notes:
1. Loosely or unevenly spooled line will change capacities.
2. Use fl exible wire rope with independent wire rope center.
3. Ferule size: ø2.0 inches, 2 1/4 inches long.
* If your winch is equipped with the optional arch, the largest wire
rope diameter approved for use is 7/8 inch.
General
The wire rope may disengage from the
ferrule pocket if there is a load on the wire
rope with fewer than 3 complete wraps on
the drum. This will cause a loss of load and
possible injury. When spooling cable from
the drum, it is very diffi cult for the operator
to know when nearing the end of the wire
rope. It is recommended that the last 5
wraps of wire be painted a contrasting
color to alert the operator that the end of
the usable wire rope has been reached.
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