Influence of temperature on surface fatigue strength of A1Sn20Cu1 alloy slide layer of the bearings

One of the most important factor affecting the bearing endurance limit is a temperature. Results of research on temperature influence on fatigue strength of AlSn20Cul alloy slide layer have been presented in the paper. The alloy, widespread in crankshaft bearings of internal combustion engines, was madę in Poland by Federal Mogul-BEMET factory. The investigation was performed in SKMR-II test rig, that had been built at the tribological laboratory of the Technical University of Gdańsk. The device is based on the principle recommended by the ISO 7905 /4 standard. Tests performed in the rig enable to elucidate the effects of separate factors influencing the fatigue phenomena, which is difficult to achieve with using more complicated bearing testing machines.