1311 超高面圧端面軸受の焼付き防止策(GS-11 トライボロジ(2),研究発表講演)

概要

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Heavily loaded sliding pairs in mechanical systems are always exposed to risks of seizure. To minimize such risks, certain extreme pressure additives and/or solid lubricants are added to the lubricating oil. As an alternative or an additional means, the authors propose to provide one of mating surfaces with numerous micro-holes without any macroscopic changes in the hydrodynamic oil film. When such a macroscopic oil film breaks down, frictional heating makes the absorbed boundary films to be easily scraped off. Frictional heating, however, extrudes the oil contained in the micro-holes to retrieve the scraped boundary films. In the present study, using a test machine which models a circular thrust bearing for a screw press spindle, seizure prevention ability of such micro-holes on a bearing surface is examined experimentally.
2005-03-18