| 摘要 |
In a constant velocity joint, the inner running grooves start from a first end of the inner part and extend along the entire length of the inner part as far as a second end. The inner running grooves are open toward the second end, and toward a central recess which starts from the second end. The central recess provides a lubricant groove function. Further, the inner running grooves preferably have a first portion and a second portion. The first portion serves to receive an associated ball extending through a cage and into the outer part. The second portion also provides a lubricating function.
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