The screens are available in different sizes to obtain the desired texture (1/16" (2 mm) to 5/8" (16 mm) hole diameter). ... The basic hammer mill features a 5″ diameter inlet with adjustable gate. No V belt and pulley, the hammer hub us mounted directly on the motor shaft, The mill requires at 3450 rpm motor, either a 7, 5, 10 or 15 Hp ...Web