Linear Step is a new series of PM type stepper motors from Nippon Pulse Motor Co. that provide linear motion without any outside mechanical transformers. The design of this motor is quite simple by creating female threads inside the rotors of ball bearing supports and the male shaft is simply threaded through. The actuators come in two sizes, PFCL25 and PFL35. The PFCL25 is suitable for applications where motor space is limited because of its compact size. Various lead screw pitches and lengths, winding choices and drive voltage choices give the design engineer the flexibility to meet the application requirements. Applications for Linear Step include medical equipment, control valve, instrumentation, analysis machines, robotics and other automated devices which require precise linear motion control.