WORLD CLASS WINCHES
RELIABLE - DEPENDABLE - UNCOMPLICATED
51
If a swivel device is installed on the rope end, a rotation resistant design cannot be
used and consequently if a non-rotation rope is selected, a swivel device cannot be
installed.
In a case where the wire rope is guided through a number of rope guides, it is
important that the guide wheel’s diameter is at least ten (10) times the rope’s
diameter. If minor adjustments of the line path are necessary, a smaller diameter of
the guide wheels or rollers can be acceptable.
Avoid large and frequent changes of the line path because this will increase the
rope wear and cause a loss of pulling power. Avoid “Z” bends because these will
significantly impact the rope’s useful life.
Frequent cleaning and lubrication will contribute to good wire rope economy.
Corrosion reduces the rope life.
Winch basics
The rope must have a rigid stiff core and tight braid cover to ensure that the rope
does not cut into underlying rope layers.
Note that the synthetic rope must be approved by Sepson for Sepson Winch
warranty to be valid.
Synthetic rope should have the following characteristics:
- Elongation is 3-5%, steel 0.25%
- heat resistance 80 °C - 100 °C, the rope deteriorate and becomes brittle
- synthetic rope snaps in a millisecond at breaking load and the rope ends strike
back like a whip.
The minimum breaking load must according to EN 14492 be at least 7 times the
nominal load, for steel 2 times the nominal load.
Synthetic ropes are recommended as extension ropes.
Be extremely careful when synthetic ropes are spooled on the drum winch.
Tight braid cover
Rigid stiff core
Synthetic ropes – fabric rope – can be used with Sepson winches.
