| 摘要 |
<p>A stamped ball bearing housing for a roller skate roller 7 consists of a cup 1 which rotates with the roller skate roller and possesses a hole in the centre into which is inserted a tubular member 2 provided with a flange 3 that encloses the cup and a protruding extension sleeve 6 which is located on its front face at the roller transverse centre line 8, and in abutment with the tubular member belonging to the ball bearing at the opposite side. <IMAGE></p> |
