Rvfm 2 phase bipolar stepper motor 12v rvfm my355 bipolar stepper motor 7 5 step angle 12v dc voltage rating 2 phase 0 48a load current 25r phase resistance 1100g cm holding torque 42mm diameter 3mm shaft diameter 32 25mm high 125g weight each 1 40mh winding inductance 22g sqcm rotor inertia a 2 phase bi polar stepper motor with a 7 5 step angle rotation of the spindle number of steps and speed are determined by the frequency of the input signal applied rvfm rvfm my355 2 ph