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中心孔有几种类型
更新时间: 2020-10-04 00:00:00  

国家规定中心孔有:

A型,B型,C型,R型四种。

A型:适用于精度要求一般的工件(不带护锥);

B型:适于精度要求高,工序较多的工件(带120度护锥);

C型:适于把其他零件作轴向固定的轴类零件(带螺孔);

R型:适用于轻型和高精度的轴(弧形)。

关键词: 中心 类型

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