| 摘要 |
PURPOSE:To prevent the generation of fine powder from a bearing and facilitate the correct installation of the bearing. CONSTITUTION:At the opened port edge part of a cup 2 and the outer peripheral edge part of a bearing 3 which corresponds to the cup 2, a positioning engagement part 5 consisting of a recessed part 5a and a projection part 5b and a slip-off preventing engagement part 6 consisting of a recessed part 6a and a projection part 6b are formed. Accordingly, the shape of each engagement part can be made simple, and a metal acute part can be eliminated, and fixation of the bearing is secured, and the generation of fine powder from the bearing is prevented. Further, since the position in the circumferential direction of the bearing for the cup is regulated, the correct installation of the bearing having a hood is facilitated by correctly installing the cup. |
