| 摘要 |
<p>PURPOSE: To reduce a vibration and a nose, and extend the service life of a thrust bearing through the application of very simple constitution by causing opposite pressure bearing seats to rigidly clamp the bearing, and clamping a disc spring between the bearing and the seat. CONSTITUTION: An inner race 61 and an outer race 62 respectively adhere to pressure bearing seats 5b and 3b approximately over a whole area, thereby stably and rigidly clamping a thrust bearing 6B. On the other hand, opposite flat pressure bearing seats 2a and 5a are also formed on the front boss of a cam plate 5 and the bearing section of a front cylinder block 2 for clamping a front thrust bearing 6A. Also, a disc spring 7 is laid between the bearing 6A and a pressure bearing section 5a formed on the front boss of the cam plate 5. According to this construction, the rigidly clamped rear thrust bearing 6B effectively restrains the unstable vibration of the cam plate 5 via the rigidity thereof, and a fluctuating axial load is pertinently absorbed by the cushion performance of the spring 7.</p> |
