Vane actuator

The oscillating motor, preferably hydraulically driven, has a rib-form stator and a bladed rotor with a drive shaft (1) bearing-mounted (3) in the end caps (22,23) of the motor's casing (2). The stator ribs and rotor blades in conjunction with the casing and end caps form working chambers. The drive shaft has at least one stepped blind hole (13) to house controlling and regulating components and from which at least one connecting passage (14) branches into the working chambers. Control valves and a reversing pump are located inside the drive shaft.