The Utility Winch and Its Relation to Cable Fatigue 640090

The Braden CL winch was built as a result of a discussion with transportation superintendents of utility companies in 1956.
Recently, Braden Winch conducted an extended experiment on cable fatigue utilizing a CL winch and sheave sets then being used in rotating derricks. The results proved that a small sheave in the derrick fatigued the cable much sooner than the sheaves of the winch.
One cable tested was a herringbone type composed of two regular and four lang lay strands. Its fatigue life was no greater than the life of a regular cable but wire breakage always occurred first in regular lay strands.


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