Medium-Speed Engine Bearings—Development Experience

After a brief history of the introduction of galvanically applied overlays to the surface of thin-walled half-bearings, the paper goes on to describe experiences in service engines. This shows that from the mid-1970s, overlay life could be sharply reduced due to a variety (or combination) of factors...

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Bibliographic Details
Published in:Journal of engineering for gas turbines and power 1991-07, Vol.113 (3), p.331-339
Main Authors: Warriner, J. F, Westerling, D. L
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Engines and turbines
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
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Summary:After a brief history of the introduction of galvanically applied overlays to the surface of thin-walled half-bearings, the paper goes on to describe experiences in service engines. This shows that from the mid-1970s, overlay life could be sharply reduced due to a variety (or combination) of factors. These are described, the possible causes explained, and various palliatives investigated. The principle factor in the mid-1970s was the rapid rise in the use of lower quality heavy fuels initiated by escalating oil costs. The consequence of using these fuels was often rapid overlay loss, which in turn resulted in further problems, particularly: large areas of exposed nickel interlay, corrosion of the overlay, and/or corrosion of the base lining material. Four palliatives, elimination of the overlay, harder overlays, elimination of the interlayer, and modified surface topography are described and results of development testing and field service experience are presented.
ISSN:0742-4795
1528-8919
DOI:10.1115/1.2906234