Effect Of Roller Profile On Cylindrical Roller Bearing Life Prediction-Part II Comparison of Roller Profiles

• Published in: Tribology transactions 2001-01, Vol.44 (3), p.417-427
• Main Authors: Poplawski, Joseph V., Peters, Steven M., Zaretsky, Erwin V.
• Format: Article
• Language: English
• Subjects: Applied sciences; Bearings, bushings, rolling bearings; Drives; Exact sciences and technology; Fracture mechanics (crack, fatigue, damage...); Fracture mechanics, fatigue and cracks; Fundamental areas of phenomenology (including applications); Life Prediction Methods, Rolling-Element Fatigue, Stress Analysis; Mechanical engineering. Machine design; Physics; Rolling-Element Bearings; Solid mechanics; Structural and continuum mechanics
• ISSN: 1040-2004; 1547-397X
• DOI: 10.1080/10402000108982476

Four roller profiles used in cylindrical roller bearing design and manufacture were analyzed using both a closed form solution and finite element analysis (FEA) for stress and life. The analyzed roller profiles were flat, end tapered, aerospace, and fully crowned and loaded against a flat raceway. Four rolling-element bearing life models were chosen for this analysis: those of Weibull; Lundberg and Palmgren; Ioannides and Harris; and Zaretsky. The flat roller profile without edge loading has the longest predicted life. However, edge loading can reduce life by as much as 98 percent. The end-tapered profile produced the highest lives, but not significantly higher than those produced by the aerospace profile. The fully crowned profile produced the lowest lives. Except for the flat roller profile, the predicted lives with the FEA method exceed those with the closed form solution. The fatigue limit proposed by Ioannides and Harris equates to one-half the value of a compressive residual stress that may exist in a rolling bearing steel. Presented at the 55th Annual Meeting Nashville, Tennessee May 7-11, 2001