25mm diameter linear step motor, linear actuator motor Captive, Non-captive, External models CE OEM 25mm diameter PM linear stepper motor, linear step motor, linear actuator motor ModelStep Angle (Deg.)No. of PhaseVoltage ... .5120.04177.540A425BYZ-B03152120.5240.04173040A425BYZ-B0415450.23220.04173040B4 25BYZ pm linear stepper motor, with captive and non-captive type