STEP MOTOR Low noise, high precision. Used widely air condition, household, medical appliance, stage lights,instruments STEP MOTORNO.Holding TorqueNmRated CurrentA/PhaseResistanceΩ/PhaseStep angleRotor inertiaKgfm²WeightkgMotor lengthL(mm)8H2028-05-4A0.0180.55.81.8º2.50.05288H2038-05-4A0.030.55.51.8º3.30.0838 step motor