Internal adjustable limit switches provide user control in positioning-type applications. Actuators can be modified to shorter stroke lengths. Single lead, rolled thread lifting screw with work-hardened finish provides long life and smooth operation. Built-in worm gear set for quiet gear reduction. Single right-hand Acme screws. Outer tube protects screw and nut from dust and contaminants. Remove outer tube and translator tube and replace with driver nut (included) to provide additional stroke modification. 115VAC, 60 Hz PSC motors feature automatic reset thermal protection and 16" power cord. Capacitor included. Actuators provide 10 to 12" of linear motion. UL Recognized (E47479, E37403) and CSA Certified. Uses: For indoor use; totally enclosed nonventilated design for light-duty applications or totally enclosed fan-cooled design for industrial duty.