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 quarter-turn motion.
Double acting, hydraulically driven OPEN and CLOSED as well as Single acting, Spring return to CLOSED.
This spring-return, hydraulic actuator is designed to meet heavy-duty marine applications.