Hydraulic Rotary Vane Type Actuators and Their Application to Farm and Industrial Machinery

The rotary actuator, a device which converts hydraulic fluid under pressure into rotary mechanical motion, is very useful in applications that require limited turning motion. Several applications are described in this paper, and illustrations are presented.

Descriptions of the two basic types of rotary actuators, the vane and the piston, are offered. The latter type is further divided into the helical-spline, piston-rack, and piston-chain.