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Effect of interference fits on roller bearing fatigue lifeAn analysis was performed to determine the effects of inner-ring speed and press fits on roller bearing fatigue life. The effects of the resultant hoop and radial stresses on the principal stresses were considered. The maximum shear stresses below the Hertzian contact were determined for different conditions of inner-ring speed and load, and were applied to a conventional roller bearing life analysis. The effect of mean stress was determined using Goodman diagram approach. Hoop stresses caused by press fits and centrifugal force can reduce bearing life by as much as 90 percent. Use of a Goodman diagram predicts life reduction of 20 to 30 percent. The depth of the maximum shear stress remains virtually unchanged.
Document ID
19870050412
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Coe, Harold H.
(NASA Lewis Research Center Cleveland, OH, United States)
Zaretsky, Erwin V.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
April 1, 1987
Publication Information
Publication: ASLE Transactions
Volume: 30
ISSN: 0569-8197
Subject Category
Mechanical Engineering
Accession Number
87A37686
Distribution Limits
Public
Copyright
Other

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