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检修圆锥滚子轴承影响寿命的注意事项

判断拆卸下的轴承可否再使用时,要在圆锥滚子轴承清洗后检查,仔细检查滚道面、滚动面、配合面的状态、保持架的磨损情况、轴承游隙是否增加及有无影响尺寸精度下降的损伤、异常。非分离型小型球轴承等,则用单手平端内圈,旋转外圈确认是否顺畅。
圆锥滚子轴承等分离型轴承,可以对滚动体、外圈的滚道面分别检查。
大型轴承因不能用手旋转,注意检查滚动体、滚道面、保持架、挡边面等的外观,轴承的重要性越高越需谨慎检查。
判断轴承可否再次使用时,要根据轴承的损伤程度、机械性能、重要性、运转条件、检查周期等相关因素来决定。但是检查时若发现有下列缺陷,则轴承不能继续使用,需要更换新轴承。
1、润滑条件黏度在滚动接触面之间形成一个足够把两个表面分开的润滑膜, 润滑剂在正常工作温度时必 须保持一定的最小黏度以减少轴承摩擦, 高轴承寿命, 响的主要因素为圆锥滚子轴承平均直径和工作转速影响.工作黏度润滑剂在工作温度下 的黏度由工作温度t4℃时的称黏度按黏温曲线确定和黏度比是一个表示油膜形成能力的指标,以它转速等因素对轴承寿命有很大影响, 运行状态变差时(温度上升,转速降低, 染物增多)轴承寿命可能大污,幅度降低。
2、TIMKEN轴承寿命修正系数的计算及影响因素分析修正 系数计算方法 .分析影响修正系数的各种因算轴承寿命的一个基础系数 ,使轴承得到较好的润滑条件,应大于等于但黏度比又不能 过大,否则黏度的增加可能会使圆锥滚子轴承的工作温度升高. 当应采用含极压添加剂润滑油此外动表面间的压力也会改变润滑油的黏度,符号意义计算方法中都考虑了运行条件(工作温度速荷转载大小润滑状况对轴承寿命的影响。
定期维护角接触球轴承常见的几大问题
检查角接触球轴承的运转温度和几点注意事项

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轴承基础
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