The V-Belt Sheave Bushed Bore 145V90 is a V-belt sheave with a bushing bore. It has a bore diameter of 1-3/16 inches and an outside diameter of 4-1/2 inches. The sheave is made of cast iron with a rough finish and has a bushing made of sintered iron. It is designed for use with fractional horsepower drives. The sheave can accommodate a V-belt with a cross section of A, B, C, or D. It provides proper alignment and reduced bearing wear. The sheave is well-suited for industrial applications.