Size 15 Bipolar Stepper Motor Specification Step Angle Step Rate Voltage Power Km Running Torque Holding Torque Kt Holding Torque Unpowered Torque Phase Resistance Phase Inductance Number of Phases/Poles Redundant Windings Weight -201 90 150 32 8.5 1.07 1.2 12.5 3 0.55 135 31 2/2 Yes 0.5 -202 90 150 17 8.5 1.07 1.2 6.25 3 0.55 34 8 2/2 Yes 0.5 Units degrees pps VDC watts in-ozâwatts in-oz in-oz/amp in-oz in-oz ohms mH phase/poles windings pounds Basis Nominal Maximum Nominal Nominal Nominal Minimum Nominal Minimum Minimum Nominal Nominal By Design By Design Nominal For the very latest specifications visit www.aeroflex.com/Motion