Occupying just 0.8 in.², Series 21000 Size 8 Actuators comes in captive, non-captive, and external linear versions with resolutions from 0.0025–0.04 mm per step. Units can also be micro-stepped for even finer resolution. Incorporating engineered thermoplastics in rotor drive nut and stainless steel acme leadscrew, stepper motor linear actuators are suited for medical equipment, semiconductor handling, valve control, X-Y tables, and handheld instruments.