4" x 5/8" (101 x 16 mm) triple sheave pulley with aluminum sheaves, stainless steel side plates and a bronze bushing. A bushing spreads the load over a larger area of the axle, sliding the load around the pulley. This results in greater transfer and very little wear and longer life. However, the greater area in contact results in increased friction, decreasing efficiency. Min. breaking strength 30,000 lbf. (133.4 kN). Weight 84 oz. (2,400 g). Made in the U.S.A.
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