The Baldor 4B154 SF Sheave is a four-groove V-belt pulley designed for A- and B-section belts, cast in close-grain cast iron and finished with a 15.75 in outer diameter. It uses a QD-bushed SF bore and accommodates bore sizes from 1/2 in to 2-15/16 in, with a through-bore length of 2.0625 in and an overall width of 3.25 in, making it suitable for robust belt-drive assemblies. Depending on belt section, the pitch diameter is approximately 15.20 in for A-belts and 15.70 in for B-belts (datum diameter 15.00 in). The assembly weighs about 39.55 lb and is intended for drives requiring precise belt alignment and torque transmission; bore and keyway configurations vary with bore size, and SF bushings are specified for mounting.
