| 摘要 |
<p>PURPOSE:To eliminate the sliding with a ring so as to suppress wear and to accurately position the ring by rotatably supporting a loading ring with a ring guide body whose roller part and flange part rotate independently from each other. CONSTITUTION:A projection part 6c is provided on the inner circumference edge part of a loading ring supported by a ring guide 21 and the projection end part forms the inner circumference edge part of the ring 6. A guide body 21 makes an inner circumference edge part 6b of the ring 6 to come contact with the outer circumference surface part of a roller part 31 and fastens both side parts of the projection part 6c with a flange part 32 to support the ring 6 and prevent it from coming off. Since the roller part 31 and the flange part 32 are slightly located apart and rotate at a different speed from each other, they roll along the ring 6 without sliding with respect to it. Thus, the wear between the ring and the guide body can be suppressed and the ring can be positioned accurately.</p> |
