| 摘要 |
PROBLEM TO BE SOLVED: To improve the retention performance of a bush arranged in a cylinder of a hydraulic rotating machine.SOLUTION: A hydraulic rotating machine 100 which is rotationally driven by the supply and discharge of a working fluid comprises: a cylinder block 2 which is connected with a shaft 1, and rotates together with the shaft 1; a cylinder 2b which has an opening part 2c at one end side of a cylinder block 2, and is formed with an annular groove 20 at an internal periphery; and a bush 6 having a protrusion 6a which is inserted from the opening part 2c of the cylinder 2b, formed inside the cylinder 2b, and filled into the annular groove 20 by plastic deformation. The annular groove 20 is formed so as to be narrowed in width along an axial direction of the cylinder 2b as progressing toward a depth direction. |
