| 摘要 |
PURPOSE:To miniturize a construction by providing a stationary pressure bearing between an input shaft and a housing. CONSTITUTION:A first groove 16 and a second groove 17 are formed on the surface of an input shaft 2, while the first groove is connected to a first pressure oil passage 5 through a second pressure oil passage 14, and the second groove 17 is connected to a first exhaust passage 4 through a second exhaust passage 15. Thereby, the input shaft 2 is enabled to rotate by a low output torque motor, and the construction may be miniturized, since a high pressure oil supplied in the first groove is flowed through a clearance between the input shaft 2 and an inside wall of housing 3-c, 3-d into the second groove, and the stationary pressure bearing is formed between the input shaft 2 and the housings 3-c, 3-d. |
