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Ceramic Bearings For Gas-Turbine EnginesReport reviews data from three decades of research on bearings containing rolling elements and possibly other components made of ceramics. Ceramic bearings attractive for use in gas-turbine engines because ceramics generally retain strengths and resistances to corrosion over range of temperatures greater than typical steels used in rolling-element bearings. Text begins with brief description of historical developments in field. Followed by discussion of effects of contact stress on fatigue life of rolling element. Supplemented by figures and tables giving data on fatigue lives of rolling elements made of various materials. Analyzes data on effects of temperature and speed on fatigue lives for several materials and operating conditions. Followed by discussion of related topic of generation of heat in bearings, with consideration of effects of bearing materials, lubrication, speeds, and loads.
Document ID
19890000318
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Zaretsky, Erwin V.
(NASA Lewis Research Center, Cleveland, OH.)
Date Acquired
August 14, 2013
Publication Date
June 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 6
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
LEW-14832
Accession Number
89B10318
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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