Piston-Helix ball nut hydraulic spring-return actuator. 500-10000 in. lbs.
Piston-Helix hydraulic actuators use hydrualic fluid under pressure to move a piston up and down which drives a ball bearing ball nut that translates the up and down motion of the piston into a rotary 100 degree motion.
Designed to meet both Industrial and Military Specifications.