is a sturdy cable consisting of wire strands (often of
high carbon steel) usually wound around a core of steel, plastic, or
vegetable fiber (e.g., sisal). Steel and plastic cores provide greater
strength; fiber cores provide greater flexibility. Wire rope is used in a
wide range of service, such as overhead cranes, elevators, and ski lifts.
Wire rope requires lubrication to reduce friction
between wires, between the core and adjacent wires, and between the rope and
external abrasive surfaces; the lubricant must also provide
corrosion protection. Depending on the
type of rope and application, wire rope can be lubricated with
petrolatum, asphalt-base
compounds, light petroleum oil, or
grease.