| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize a structure capable of sufficiently positioning the radial direction of a retainer 24b constituting a radial needle bearing 20b for supporting each power roller 6, and suppressing the increase in a rotational resistance of each retainer 24b or the temperature rise of each radial needle bearing 20b at the time of transmitting a high torque.SOLUTION: The positional regulations on the radial directions of these individual retainers 24b are made by the inner ring guide to make the individual inner circumferences and the outer circumferences of the individual roller support shafts 12 proximately opposed. On the other hand, the differences in the non-transmission state between the internal diameter r of the center holes 19 of the individual power rollers 6 and the external diameter d of the individual retainers 24 are made larger than the maximum of the deformation quantity of the center hole 19 of those individual power rollers 6 on the basis of the power transmission.</p> |
