These bearings have no central rib on the inner ring and are therefore able to use longer barrel rollers.

这些轴承已没有中央肋骨的内圈，因此能够使用较长每桶辊。

youdao

These bearings have no central rib on the inner ring and are therefore able to use longer barrel rollers.

这些轴承已没有中央肋骨的内圈，因此能够使用较长每桶辊。

youdao