Allen Sheaves are made from acetal resin, aluminium, or stainless steel and feature either ball or plain bearings.
Allen sheaves come in a wide range of sizes and configurations to suit all applications whether it is replacing old or worn existing parts or to build a custom fitting yourself.
Antal produces a wide range of sheaves for series "Mini", "Composite Fibre" and "Tulip".
Turning Sheaves are mounted aft of a set of rope clutches, the turning sheave redirects each line to the most suitable winch. Mounting screws, nuts and washers included.
Tulip sheaves have a particular groove shape that allows a line lead angle range of 40Ø.
Schaefer blocks rely on a variety of sheave designs and materials
Delrin Ball Bearing: Delrin sheaves and Ball Bearings are used in line application to reduce friction. To provide the maximum load bearing capability, Schaefer designed their Delrin ball bearing sheaves and inner races with curved surfaces to match the ball races.
Aluminum Universal Circuit Sheaves (UC): These extremely low friction ball bearing sheaves accommodate both line and wire. High strength self-contained Delrin bearing package and Nomex/Teflon self-lubricating bushing is used in all sheaves.