Performance studies of self-acting oil-lubricated bump journal bearing under lightly loaded conditions employing pocketed top foils

This paper explores the performance of oil-lubricated bump journal bearings employing micro-pockets on top foil surfaces for lightly loaded applications such as vertical rotor-bearing systems of centrifugal oil filters, vertical pumps, vertical shaft sinking machines and helicopter rotors. The influ...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science Journal of mechanical engineering science, 2022-08, Vol.236 (15), p.8714-8730
Main Authors: Ganai, P, Atwal, JC, Pandey, RK, Dutt, JK
Format: Article
Language:English
Subjects:
Centrifugal filtration
Centrifugal pumps
Coefficient of friction
Foils
Friction reduction
Journal bearings
Rotary wings
Rotor-bearing systems
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Summary:This paper explores the performance of oil-lubricated bump journal bearings employing micro-pockets on top foil surfaces for lightly loaded applications such as vertical rotor-bearing systems of centrifugal oil filters, vertical pumps, vertical shaft sinking machines and helicopter rotors. The influence of the number of pockets and their attributes on the performance behaviours of the bearing has been presented and explored herein. The six pocketed top foil yields the best performance, followed by four, eight and ten pocketed cases. With micro-pocketed top foil, the coefficient of friction is reduced by 7–18% compared to plain foil. Furthermore, pocketed foil provided improved stability of the rotor.
ISSN:0954-4062
2041-2983
DOI:10.1177/09544062221087844