The Sanyo Denki 103H7123-5640 is a 2-phase step motor with single shaft, 56-millimeter motor diameter, and a 53.8-millimeter motor length. It is designed for bipolar operation, with four leads allowing for electrical connections. It has low vibration and low noise levels, making it a great choice for a variety of industrial applications, including instruments, weapons, and factory automation. This stepper motor can be used in a wide range of temperatures, from -20? to +100?. It is built with durable components, and is backed by Sanyo Denki's excellent reliability and performance ratings.