| 摘要 |
A sealing ring is provided between an end plate of an eccentric rotation body and a support plate so that a pressure of fluid at high pressure is allowed to work on the end plate, thereby allowing an axial-direction pressing force to work on the end plate. The sealing ring is arranged eccentrically away from the a center of a cylinder as forming the eccentric rotation body to minimize separation of the axial-direction pressing force from a thrust load in the a radial direction in the end plate of, thereby reducing turnover moment effectively.
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