| 摘要 |
A cross groove type constant velocity joint 10 comprises a cuplike outer race 11, an inner race 12, plural balls 13 and a cage 14. The outer race 11 has plural outer grooves 11a twisting about a rotational axis of the outer race 11 on its inner surface. The outer race 11 itself has plural restrictions 11b at the back of the outer grooves 11a to prevent the balls 13 from dropping out of the outer grooves 11a where the respective ball 13 is at the innermost end of the outer groove 11a.
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