轴承的损伤及其原因和对策1

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1、轴承的损伤及其原因和对策①剥离和点蚀FlakingandPitting现象、原因和对策Phenomena^causegandcountermeasures~~剥离是指因材料的滚动疲劳在滚道面及滚动面表层部分出现的鱼鳞状损伤。产生这种现象时，可认为轴承已达到寿命。因材料的滚动疲劳引起的损伤还有点蚀，是指在滚道面出现的深度为0.lmm左右的微孔Flakingisaphenomenainwhichthebearingsurfaceturnsscalyandpeelsoffduetocontactloadrepeatedlyreceivedontheracewayandr

2、ollingsurfaceduringroataion.Occurrenceofflakingindicatesthattheendofabearing"sserviceisnear.Pittingisaphenomenainwhichsmallhoies0.1mmindeptharegeneratedontheracewaysurfacebyrollingfatigue.•轴承内部游隙过小Duringoperation,bearinginternalclearancebecomesnarrowerthanspecified.•轴承安装不良Bearingismou

3、ntedataninclinationbymistake・•Flawiscreatedduringmounting,brinelling,nicks,rustetc.•轴或外壳的粘度差Inaccurateshapeofshaftorhousing.♦选择合适的轴承内部游隙♦正确定心♦修正轴或外壳挡肩端面的垂直度♦改进安装作业方法失效示例Examplesoffailures<1