A motor pulley is a wheel mounted on the motor shaft of a band saw, mill drill machine, or other power tool, designed to transmit rotational motion and torque to the drive wheel, cutting tool, or other machine components via a belt. Motor pulleys can be made from various materials, such as cast iron, aluminum, or steel, and may feature different profiles, such as V-grooves or toothed profiles, to match the belt type. Proper motor pulley alignment is essential for smooth, efficient power transmission.