| 摘要 |
An idler gear (7) is mounted in a variable speed gear transmission (1) on a rolling bearing crown ring (10) whose first and second rolling elements (12, 20) are guided in a cage (11) and have different diameters. The first and second rolling elements (12, 20) are of a same type, size ratios between the first and second rolling elements are defined so that, in an unloaded state, the larger diameter of the second rolling elements (20) is such as to become equal to a diameter of the first rolling elements (12) in an engaged state under radial loading, whereby a limit of elasticity of the second rolling elements (20) having the larger diameter in the unloaded state is not exceeded.
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