Failure analysis of angular contact bearing used in exhaust system

The causes of failure in angular contact ball bearing employed in paper mill exhaust system have been investigated. The following experimental procedures were carried out: visual, dimensional, metallographic, fractographic and inclusion content analyses, besides hardness testing. Is has been conclud...

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Veröffentlicht in:	Tecnologia em Metalurgia, Materiais e Mineracao Materiais e Mineracao, 2011-01, Vol.20110718, p.10-19
Hauptverfasser:	De Castro, Danilo Borges Villarino, Gatti, Maria Cristina Adami, Spinelli, Dirceu, Tarpani, Jose Ricardo
Format:	Artikel
Sprache:	eng
Schlagworte:	Bearing Bearing races Contact Contact angle Exhaust systems Hardness Inclusions Visual
Online-Zugang:	Volltext
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Zusammenfassung:	The causes of failure in angular contact ball bearing employed in paper mill exhaust system have been investigated. The following experimental procedures were carried out: visual, dimensional, metallographic, fractographic and inclusion content analyses, besides hardness testing. Is has been concluded that the rolling-element bearing failed by overload in highly localized regions in both the inner and outer races. Contact fatigue developed specially in the inner race as a result of high inclusion concentration in this region. The bluish colored outer ring surface indicated that the local temperature reached the range of 300-350 degree C.
ISSN:	2176-1515