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The series hybrid bearing - A new high speed bearing concept.The series-hybrid bearing couples a fluid-film bearing with a rolling-element bearing such that the rolling-element bearing inner race runs at a fraction of shaft speed. A series-hybrid bearing was analyzed and experiments were run at thrust loads from 100 to 300 lb and speeds from 4000 to 30,000 rpm. Agreement between theoretical and experimental speed sharing was good. The lowest speed ratio (ratio of ball bearing inner-race speed to shaft speed) obtained was 0.67. This corresponds to an approximate reduction in DN value of 1/3. For a ball bearing in a 3 million DN application, fatigue life would theoretically be improved by a factor as great as 8.
Document ID
19720027871
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Anderson, W. J.
Fleming, D. P.
Parker, R. J.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 6, 2013
Publication Date
October 1, 1971
Subject Category
Machine Elements And Processes
Report/Patent Number
ASME PAPER 71-LUB-15
Meeting Information
Meeting: American Society of Lubrication Engineers and American Society of Mechanical Engineers, Joint Lubrication Conference
Location: Pittsburgh, PA
Start Date: October 5, 1971
End Date: October 7, 1971
Accession Number
72A11537
Distribution Limits
Public
Copyright
Other

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