The internal clearance is a decisive parameter for life prediction and reliability analysis of rolling bearings. In this paper, a comprehensive reliability analysis model of rolling bearings is proposed by considering the internal clearance of rolling bearings. The model of bearings’ working clearance was established after investigating the effect mechanisms of effective interference, temperature, and centrifugal force on the clearance. The validation of the results is carried out by the reliability analysis of a real rolling bearing through the modeling of working clearance probability distribution and the research of life factor. The results indicate that the proposed methodology provides an additional reference way for the reliability analysis of rolling bearings.

内部游隙是滚动轴承寿命预测和可靠性分析的决定性参数。考虑滚动轴承的内部游隙，提出了一种滚动轴承综合可靠性分析模型。在研究了有效的干涉，温度和离心力对游隙的影响机理后，建立了轴承的游隙模型。通过对真实滚动轴承的可靠性分析，工作间隙概率分布的建模和寿命因素的研究，对结果进行了验证。结果表明，所提出的方法为滚动轴承的可靠性分析提供了额外的参考方法。