Investigation of Tribological Behaviour of Journal Bearings for Different Conditions : A Review

In high speed applications like pumps, turbines, turbocharger journal bearing serviceability is very important one. The journal bearing acting as a support for high rotary speeds as well as acting as a damping element so as to absorb the vibrations at high speeds. In hydrodynamic region if failure of lubrication or starved lubrication is occurred it responsible for tremendous amount of friction between the shaft and bearing with high wear loss causing damage to the surfaces of the component. So it focuses that use of sintered composites for journal bearing applications is suitable for reduced frictional wear. However experimental analysis is required for sintered composites at high speed with starved or dry conditions of lubrication. The combine effect of parameters has to be studied for tribological behaviour of sintered journal bearings. It includes surface quality, alloying material compositions, porosity of sintered bearings, geometrical aspects and external conditions like applied loads, speed transitions, temperature, lubricating conditions etc. With reference to said subject thorough literature review was carried out. It provides very valuable information regarding parametric analysis and its effect on friction and wear of bearings in different situations of temperature, load, speeds etc.