级别3：飞轮轴套的公差矫正。只有工厂可以操作。

Level3: Tolerance matching of freewheel bushings. Factory only.

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可提供普通公差公差无后缀的角接触球轴承uo或者UA通用设计型，并且，也能提供P 5级别公差后缀p5。

Angular contact ball bearings of universal design UO or UA are supplied with normal tolerances no suffix for the tolerance and, upon request, with tolerance class P5 suffix P5.

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