| 摘要 |
A scroll hydraulic machine which can prevent a key groove of a front case from being abnormally abraded even when lubricating oil runs out, and which can reduce number of parts, is provided. A scroll hydraulic machine comprises a fixed scroll, a swirling scroll performing a revolutionary swirling motion while engaging with the fixed scroll, an Oldham joint having a key for causing a swirling scroll to move in a revolutionary swirling motion while preventing the swirling scroll from rotating a front case, and a case body receiving the fixed scroll, the swirling scroll and the Oldham joint within a housing formed by attaching the front case to an opening portion of an end thereof. A key groove portion (50) to which the key of the Oldham joint is fitted and a portion (51) supporting a thrust force acted on the swirling scroll of the front case are made of a ferrous alloy. <IMAGE> |
