HSI offers Big Inch Series 33700 Stepper Motor. It is a 2- phase bi-directional motor with bipolar windings for high torque applications. It combines two single-phase non-shaded pole stators and a permanent magnet rotor on a shaft to produce a 90&176; step. Operating range is 0 to 400 pps .Power input is 4 watts total. Temperature rise is 50&176;C. Typical uses are, battery operated chart and counter drives, odometers, and paper drives.