UNIT bearing: an automotive bearing used that is sold as an assembled set and is non-adjustable; characterized by a cone with no large rib.
组合轴承单元：是一个应用于汽车上，在销售前预组装、无需调整游隙以及内圈没有大挡边的轴承单元。
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By improving steel material quality, adopting plastic cage, improving rib structure and using crowned rollers, the life and performance of cylindrical roller bearing can be largely increased.
Geometric accuracy and semblance quality were required seriously during grinding outer ring raceway and rib of bearing synchronistically, common corindon grinding wheel was not very effective.