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PTFE, Tin bronze and white metal widely used as journal bearing materials in tribological applications. Thus, the purposes of this study were to investigate the tribological properties of bearing alloys with different compositions used especially in heavy industrial service conditions. The specimens were fabricated using the powder metallurgy (sintering) techniques. The wear and coefficient of friction of all these materials are evaluated using pin-on-disc tribometer with respect to sliding speed and bearing load. Tests were carried out in dry sliding conditions, since despite the presence of lubricant film, under heavy service conditions dry sliding may occur from time to time, causing local wear. In this study, tribological and mechanical properties of these journal bearings manufactured by metals were investigated.

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