RADIAL PISTON TYPE HYDRAULIC MACHINE, HYDRAULIC TRANSMISSION AND WIND POWER GENERATION EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a radial piston type hydraulic machine, a hydraulic transmission and wind power generation equipment which satisfactorily maintains lubricity between a cam surface and a roller and permits long life of a cam.SOLUTION: A radial piston type hydraulic machine includes a plurality of pistons arranged along a radial direction of the hydraulic machine, a plurality of rollers disposed freely rotatably respectively on the plurality of pistons, and cams having cam faces brought into contact with the plurality of rollers. The cams are configured relatively rotatably to the rollers around a rotation shaft of the hydraulic machine and a polishing direction of the cam face is different from the rotation direction of the rotation shaft.