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首页> 外文期刊>Journal of Failure Analysis and Prevention >Failure Investigation of Differential Pinion Tapered Roller Bearing
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Failure Investigation of Differential Pinion Tapered Roller Bearing

机译：差动小齿轮圆锥滚子轴承的失效研究

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摘要

Premature bearing failures can be attributed to several factors such as improper selection of bearing, rise in temperature, corrosive media, dirt, abusive handling, improper installation, and servicing practices. In the present study, damage analysis made on the prematurely failed differential pinion tapered roller bearing is discussed. A detailed metallurgical analysis is carried out on the failed bearing and the probable root cause was traced to higher preload on the bearing resulting in temperature rise and degradation of lubrication. Excessive preload caused rubbing of rollers against the cone rib leading to temperature rise. This in turn degraded the lubricant and caused eventual seizure. The steep rise in temperature was confirmed by the presence of untempered martensitic structure in the raceway load zone of the cone.
机译：轴承过早失效可归因于多种因素，例如轴承选择不当，温度升高，腐蚀性介质，脏物，滥用处理，安装不当和维修习惯。在本研究中，讨论了对过早失效的差速小齿轮圆锥滚子轴承进行的损坏分析。对发生故障的轴承进行了详细的冶金分析，追溯到轴承上较高的预紧力，可能是导致温度升高和润滑性能下降的根本原因。预紧力过大会导致滚子与圆锥肋摩擦，从而导致温度升高。这继而使润滑剂降解并导致最终的卡死。锥体的滚道载荷区中存在未回火的马氏体结构，证实了温度的急剧上升。

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