Rotating stainless steel acme lead screw of Size 11 is incorporated into motor's rotor. Shaft to lead screw couplings are eliminated to save time during assembly into final applications. Hybrid actuator replaces motor, coupling, lead screw, and nut. Resolutions range from 0.000125-0.002 in. per step. It delivers thrusts up to 25 lb without compromising long life. Motor is suited to applications requiring precise positioning and rapid motion.