冲击式破碎机转子轴承公差配合及游隙的合理选择对防止轴承发热，提高轴承寿命具有十分重要的作用。
Rational selection to tolerances, fits and clearance of rotor-bearing of impact crusher is very important to avoid overheat of bearing and prolong the life of bearing.
本文主要分析机械零配件的设计及高精度机械结构的公差与配合理论分析。
This article is mainly at theory analysis of tolerance & fit in high-accuracy mechanical part design.
并能正确标注尺寸及加工表面符号，公差与配合。
Learning to mark dimensions, manufacturing surface symbols tolerance and fittings correctly.
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