The Hydramotor Actuator H11 is a two position, spring-return, pull-type shaft that retracts on application of power and spring-returns on loss of power. The Hydramotor H11 serie is the result of over 50 years of experience in designing, testing, manufactoring and servicing electrohydaulically powered actuators. H11 series of hydramotor is available in both push an pull power stroke, with a choice of either spring-return or lock-in-last position upon loss of power. Considerable field experience has proven the H11 series to be extreme reliable. With minimum service requirements and a prolonged service life. The need for gears has been eleminated in favor of a modular design using fewer moving internal components and industry proven heat-resistant seals - immersed in oil for continuous lubrication.