Thermal behaviour and performance characteristics of a twin axial groove journal bearing as a function of applied load and oil supply temperature

• Autor(a) principal: Brito, F. P.
• Data de Publicação: 2006
• Outros Autores: Bouyer, J., Fillon, M., Miranda, A. S.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/1822/6127

An experimental study of the influence of applied load and oil supply temperature on the performance of a 100mm plain journal bearing with two axial grooves located at ±90º to the load line has been carried out. Hydrodynamic pressure at the mid-plane of the bearing, temperature profiles at the oil-bush and oil-shaft interfaces, bush torque, oil flow rate and shaft position were measured for variable operating conditions. The applied load varied from 2 to 10kN, whereas the supply temperature ranged from 35 to 50ºC. Bearing performance is strongly dependent on these parameters. It was found that the cooling effect of the downstream groove increases when the applied load increases. The opposite occurs with the upstream groove. Shaft temperature was found to be close to the maximum bearing temperature for low applied loads, but was significantly lower than this value for high loads. The increase in maximum bearing temperature was between 30 and 50% of the corresponding increase in supply temperature.