The Browning BK90H Sheave is an 8.75-inch outside-diameter, single-groove cast-iron V-belt pulley from Browning’s BK H-series, designed as an FHP, bushed pulley that uses a Browning split-taper bushing (H-series) to set the bore on the shaft. It is a 1-groove design with a combination-groove capability that allows A, 4L, B, and 5L belts to run in the same pulley, increasing compatibility across common belt standards. The BK90H measures 8.75 in O.D. with an outside length of 1.5625 in and is built from cast iron for rigidity and wear resistance in belt-drive assemblies; bore size is determined by the installed bushing, so the proper shaft bore must be provided by the corresponding split-taper bushing.
