轴承参数翻译?ball grade,bearing class,bearing grade and internal c

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轴承参数翻译?ball grade,bearing class,bearing grade and internal clearance

all grade：球等级,即球的精度等级,按照GB/T308标准,有G5、G10、G20等各种等级.
bearing class：轴承种类,如深沟球轴承、角接触球轴承、圆锥滚子轴承,等等.
bearing grade：轴承等级,即轴承的公差精度,按照GB/T 307.1,有P0、P6、P5、P4等各种等级.
internal clearance：轴承的内部游隙,有径向游隙和轴向游隙两种,不同种类的轴承有不同要求,径向游隙可查阅标准GB/T 4604.

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