... %Inductance Accuracy:±20%Temperature Rise:80DegreeC Max. (rated current,2 phase on)Ambient Temperature:-20~+50DegreeCInsulation Resistance:100M(Ohms) Min. ,500VDCDielectric ... -2804B3.22.81.1318.94 57mm electric stepper motor, two phase, 1.8 or 0.9 degree