| 摘要 |
PURPOSE: To provide a thrust ball bearing for a scroll machine where the mutual eccentric phase matching of bearing washers relative to a bearing washer fitting groove of a turning scroll member and a fixed scroll member is facilitated, and the workability such as the improvement of an assembling property and the prevention of the rotation and the axial coming-off is prevented. CONSTITUTION: A pair of pressed bearing washers 21 are fitted to a bearing washer fitting groove 26a of a turning scroll member and a fixed scroll member 26, and balls 23 are interposed between a pair of these pressed washers 21. The washers 21 achieve the positioning and prevention of rotation or the axial coming-off to the washer fitting groove 26a by either of a notch 22 and a projecting part 27, a projecting part and a recessed part, a pin hole and a pin, or a projection and a recessed part which are elastically deformed. |
