Bearings are widely used in mechanical system as a kind of important basic parts. However, the unsuitable bearings directly affect the accuracy and life time of the whole mechanical system, so it is important to choose them perfectly. This paper discusses some common ways of selecting and applying the bearings in such mechanical system.%轴承作为重要的机械基础件,广泛应用于国民经济和国防事业的各个领域.在以电动机作为驱动源的机械系统中,轴承选择合适与否,将直接关系到整个机械系统的精度及使用寿命,所以轴承的选择对于电动机系统的设计至关重要.通过一个电动工具中轴承应用的实例,探讨在此类机械系统中轴承的选择与应用的一般思路.
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