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Rolling Bearing Life Prediction-Past, Present, and FutureComparisons were made between the life prediction formulas of Lundberg and Palmgren, Ioannides and Harris, and Zaretsky and full-scale ball and roller bearing life data. The effect of Weibull slope on bearing life prediction was determined. Life factors are proposed to adjust the respective life formulas to the normalized statistical life distribution of each bearing type. The Lundberg-Palmgren method resulted in the most conservative life predictions compared to Ioannides and Harris, and Zaretsky methods which produced statistically similar results. Roller profile can have significant effects on bearing life prediction results. Roller edge loading can reduce life by as much as 98 percent. The resultant predicted life not only depends on the life equation used but on the Weibull slope assumed, the least variation occurring with the Zaretsky equation. The load-life exponent p of 10/3 used in the American National Standards Institute (ANSI)/American Bearing Manufacturers Association (ABMA)/International Organization for Standardization (ISO) standards is inconsistent with the majority roller bearings designed and used today.
Document ID
20010018968
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Zaretsky, E V (NASA Glenn Research Center Cleveland, OH United States)
Poplawski, J. V. (Poplawski (J. V.) and Associates Bethlehem, PA United States)
Miller, C. R. (Williams International Walled Lake, MI United States)
Date Acquired
September 7, 2013
Publication Date
November 1, 2000
Subject Category
Mechanical Engineering
Report/Patent Number
NASA/TM-2000-210529
NAS 1.15:210529
E-12178
Report Number: NASA/TM-2000-210529
Report Number: NAS 1.15:210529
Report Number: E-12178
Meeting Information
Meeting: International Tribology Conference 2000
Location: Nagasaki,
Country: Japan
Start Date: October 30, 2000
End Date: November 2, 2000
Sponsors: Japanese Society of Tribologists
Funding Number(s)
PROJECT: RTOP 253-02-98
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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