Abstract

Calculating the fatigue life of a tapered roller bearing has become a rather straightforward exercise thanks to the accumulation of rolling contact fatigue data and the subsequent development of formulation relating applied loading to bearing fatigue life. An integral part of the prediction process is to define an equivalent radial load (EQRL) by combining a bearing’s applied radial and thrust loading into a single entity. This paper reviews currently accepted formulation and offers a potentially more accurate alternative method for estimating the EQRL of a tapered roller bearing than does the current AFBMA standard.

Issue Section:
Research Papers
Topics:
Stress, Tapered roller bearings, Fatigue life, Bearings, Fatigue, Rolling contact, Thrust
1.
Frayer, Jr., R. W., 1985, “Measurement of Bearing Loads Using Ductile Wire Inserts,” SAE Paper 850765, Warrendale, PA, Apr.
2.
Frayer Jr., R. W., Miller, J. R., Wojan, S. A., 1992, “Signature Bearings as Used for Tapered Roller Bearing Design Optimization,” SAE Paper 920902, Warrendale, PA, Apr.
3.
Lundberg, G. and Palmgren, A., “Dynamic Capacity for Rolling Bearings,” Acta Polytechnica, Mech. Eng. Series, 1, 3, Stockholm, Sweden.
4.
Lundberg, G., and Palmgren, A., 1951, “Dynamic Capacity of Roller Bearings,” Acta Polytechnica, Mech. Eng. Series, 2, 4, Stockholm, Sweden.
5.
Rumbarger
J. H.
, and
Poplawski
J. V.
,
1994
, “
Correlating Computerized Rolling Bearing Analysis Techniques to the ISO Standards on Load Rating and Life
,”
STLE Tribology Transactions
, Vol.
37
, No.
4
, pp.
793
–
801
.
6.
Zaretsky, E. V., (editor), 1992, “STLE Life Factors for Rolling Bearings,” P. 43, Park Ridge, IL.
7.
“Load Ratings and Fatigue Life for Ball Bearings,” 1990, ANSI/AFBMA Standard 9–1990, ANSI, NY.
8.
“Load Ratings and Fatigue Life for Roller Bearings,” 1990, ANSI/AFBMA Standard 11–1990, ANSI, NY.
9.
“Rolling Bearings—Dynamic Load Ratings and Rating Life,” 1990, ISO Standard, 281:1990 (E), ISO Geneva, Switzerland.
10.
U. S. Patent No. 4,626,567, 2 December 1986, “Method and Apparatus for the Measurement of Bearing Loads Using a Ductile Wire Insert,” Robert W. Frayer Jr., Douglas Glover.
This content is only available via PDF.
Copyright © 1996
 by The American Society of Mechanical Engineers
You do not currently have access to this content.