Abstract
The word bearing implies to an element of the machine which allows one moving or vibrating part to support other rubbing surfaces by which the load can transmit. Depending upon in nature and application of load, an extensive variety of different bearing is available. They can generally be categorized into two kinds of bearing such as rolling element bearing and a sliding bearing. Lubrication is required in the middle of rubbing surfaces, which enacts as a medium between the moving surfaces to diminish friction and to take away heat for survival during the transmission of the load. In this paper, a literature review has been made on the influence of different lubricants on the performance of various bearing. The selection of an appropriate lubricant is a very critical decision to take for the efficient performance of a bearing because each lubricant has its own merits and demerits on various kinds of bearing. In the later portion of this paper, a selection process of right lubricant in sliding contact bearing is analyzed mathematically. This critical decision is being made by using PROMETHEE method (broadly Preference Ranking Organization Method for Enrichment Evaluations) hybridized by Entropy Weight Measurement method and Fuzzy scale. As per the ranking of Entropy-PROMETHEE method, the best suited lubricant for sliding contact bearing is SAE20W40.
Highlights
For the purpose of running the machines or engines, wide varieties of bearings are required
We use the entropy weight measurement method because it doesn’t require any consideration of the preference and decision of the decision maker to the attributes [44] and PROMETHEE is used in this work because it is a very simple and logical outranking method which is used in many more times in different areas of science and technology but very few in tribology and machine design area [45]
The increasing scientific application and importance of lubricants including surface contacts where the absence of a rigorous proactive classification of the lubrication system in the field of industrial application is felt. This shortcomings led this review for the oils in terms of the theoretical assumptions and description of different lubricants with sufficient details and to recommend a best-suited lubricant for the specific bearing
Summary
For the purpose of running the machines or engines, wide varieties of bearings are required. Lubrication enacts a very vital role in bearing to work efficiently. Lubricant helps the bearing to withstand high speeds, loads, and incessantly increasing pressures and mechanical shearing forces conditions as implied by operating conditions [1]. The continuous sliding between the surfaces and the presence of a layer of foreign particles at the interface developed high friction and wear as a result of the high surface energy. To counter these effects, lubricants are applied to lessen the friction and wear between the interfaces [2]
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