减摩轴承基本上有滚珠轴承、滚柱轴承和滚针轴承三种。
The three basic types of antifriction bearings are ball bearings, roller bearings, needle bearings.
介绍了东风汽车车轮有限公司为开展滚型车轮生产线建设而进行的车轮轮辋滚型工艺的工序设计与模具设计，生产出的轮辋尺寸精度高，圆角减薄量小。
This paper introduces the roll forming process and mould design of wheel rim. The rim manufactured with the dies has higher dimensions precision, less reducing thickness.
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