The Browning BK77H is a one-groove, cast-iron bushed sheave in the BK H series that accepts A, 4L, B, or 5L belts in a single pulley for flexible belt-pitch options. With a 7.45" outside diameter and a 7/8" (22 mm) face width, it is designed for 4L or A belts and 5L or B belts, offering pitch diameters of about 6.9" (A) or 7.4" (B) depending on belt size. It uses a split-taper bushing (bore range 3/8" to 1-1/2") for mounting and is statically balanced to promote smooth operation in light- to medium-duty belt drives across industrial machinery, conveyors, and other power-transmission applications.
