The Aluminum Sheave Housing slides onto the I-beam flange of an aluminum cradle beam. Made from 6061-T6 USA Aluminum. No-weld construction. Two mounting holes on either side of the sheave housing. Small fits 4″ cradle beams, medium fits 5″ cradle beams, and large fits 6″ cradle beams. All three sized housings accept sheaves up to 4 inches in diameter and 3/4 inches wide.
This complete pulley bracket comes with the 4″ sheave, 3/4” stainless steel axle bolt with grease zerk fitting, and two 1/2” stainless bolts for mounting to the flange.