| 摘要 |
An annular pulley body (13) is mounted on and for rotation relative to a support body (10) by a bearing (11) having a bearing ring (12) seated on the support body. The support body (10) has an abutment (15) and an annular groove (16) at opposite ends of the bearing ring (12). A securing ring (18) is disposed in the groove (16) in a radially expanded form. The securing ring (18) and the groove (16) have co-operating inclined surfaces (17, 19) such that upon contraction of the securing ring it urges the bearing ring towards the abutment. To avoid the disadvantages of a broken or split ring having an inclined surface, the securing ring (18) is endless and contracts or is caused to contract whilst it is in the groove (16). <IMAGE> |
