Effects of Dimple Shape on Lubrication Characteristics of Parallel Thrust Bearings

Miwa, Reo; Miyanaga, Norifumi; Tomioka, Jun

doi:10.1299/jsmekanto.2020.17e21

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2021

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“…The authors have been studying lubrication characteristics of dimpled seal-like thrust bearings, and recently compared the load-carrying capacity and the frictional torque under constant film thickness tests and constant load tests [9,10]. Both results had good agreement and the constant film thickness test in which the effect of cavitation bubbles could be clarified was appropriate.…”

Section: Introductionmentioning

confidence: 99%

Hysteresis Phenomenon of Hydrodynamic Lubrication Characteristics of Seal-Type Dimple Bearings

Miwa

Miyanaga

Tomioka

2021

Advances in Science and Technology

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This study involved an experimental investigation of the hydrodynamic lubrication performance of dimpled seal-like thrust bearings. Circular dimples were created on lubricating surfaces and the hydrodynamic effects were evaluated. The load-carrying capacity and frictional torque were measured under a constant film thickness. The lubricating surface was observed to make clear the effect of the cavitation area on the load-carrying capacity and the frictional torque. Dimpled specimen produced the load-carrying capacity and it showed a signature hysteresis phenomenon. Cavitation strongly affected the phenomenon. In addition, the dimpled specimen could reduce the frictional torque compared with the plane (dimple-free) specimen. However, the hysteresis phenomenon of the frictional torque was not clear compared with that of the load-carrying capacity.

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Section: Introductionmentioning

confidence: 99%