Nema 23 step motor, 57mm stepping motor Available NEMA 08, 11, 14, 15, 17, 23, 24, 34 and 42 and motor driver Step Angle: 1.8 or 0.9 Deg Nema 23 Stepper MotorFrame size 57mmwith length 41 to 76mm, CE and RohsModel No.RatedVoltageCurrent/PhaseHoldingTorque# of LeadsRotorInertiaWeightDetentTorqueLengthSingle ShaftDouble ShaftVAkg-cm g-cm2kgkg-cmmmSM57HT41-1006AB5.713.961200.450.2141SM57HT41-2006AB2 ...