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New Bearing Durability Test for Automotive Axle Lubricants
Technical Paper
2009-01-2634
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Currently there is no axle test aimed specifically at bearing durability in automotive hypoid axles. Existing axle tests are primarily focused on gear distress and lubricant protection of gears. In light of the new test information showing axle bearing distress, there is a need to develop a new bearing durability test for automotive and truck axle lubricants. To fulfill this need, a new bearing durability test has been developed to better assess lubricant requirements for rolling element bearing durability. Although the final test of an axle lubricant is in a driven automobile or truck, an effective screening test based on actual light duty truck conditions can be used to accelerate lubricant development to enhance bearing performance in hypoid axles. This new test simulates actual road durability tests in the lab. A specific load cycle which retains the critical road test loading conditions reduces test time and helps speed up lubricant development.
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Authors
Citation
DeGonia, D., Hewette, C., Koglin, C., Hoeprich, M. et al., "New Bearing Durability Test for Automotive Axle Lubricants," SAE Technical Paper 2009-01-2634, 2009, https://doi.org/10.4271/2009-01-2634.Also In
References
- Michael Hoeprich has retired from The Timken Company and works as a part-time consultant to Afton Chemical Corporation.
- Harold Chambers has retired from Ford Motor Company.
- ASTM D 6121, L-37 high load/load speed wear test.
- ASTM D 7452, L-42 scuffing test using increasing load stages.
- ASTM D 5704, L-60 oxidation test.
- DIN 51819-2, Testing rolling bearing lubricants using the FE 8 wear test machine - Test procedure.
- Akucewich, E.S. Vinci, J. N. Cain, R.W. Qureshi, F.S. “Developing Next-Generation Axle Fluids: Part I--Test Methodology to Measure Durability and Temperature Reduction Properties of Axle Gear Oils,” SAE 2002-01-1691
- Jao, T.C. DeGonia, D.J. Hewette, C. Koglin, C. Swanson, B.J. Woodside, G. E. “Rig and Road Tests Used in Development of Temperature Reduction of Automotive Gear Oils,” JSAE No. 20077140, SAE 2007-01-1983
- O'Connor, B.M. Vinci, J.N. Akucewich, E.S. Quereshi, F.S. “Optimizing Lubricants for Axle Durability and Efficiency,” 13 th International Colloquium Tribology (ed. W.J. Bartz) 2002
- Vinci, J.N. Akucewich, E.S. Cain, R.W. Qureshi, F.S. “Developing Next Generation Axle Fluids: Part II - Systematic Formulating Approach,” SAE 2002-01-1692
- Tallian, T.E. ”Failure Atlas for Hertz Contact Machine Elements,” ASME Press N.Y 1992
- Widner, R. L. Littmann, W. E. Bearing Damage Analysis, Mechanical Failure--Definition of the Problem NBS Special Publication No. 423 (Available from Supt. of Documents, U.S. Govt. Printing Office, Washington, D.C.) 67 84 1976
- Cogne, J.Y. Heritier, B. Monnot, J “Cleanness and Fatigue Life of Bearing Steels,” The Institute of Metals 26 31 1987
- Stover, J.D. Kolarik II, R.V. “Air-melted steel with ultra-low inclusions stringer content further improves bearing fatigue life,” SAE 871208
- Hoeprich, M.R. “Rolling-Element Bearing Internal Temperatures,” STLE Tribology Transactions 39 855 858 1996
- Nixon, H.P. Zantopulos, H. ”Observations of the Impact of Lubricant Additives on the Fatigue Life Performance of Tapered Roller Bearings,” SAE 952124 , International Off-Highway 8 Powerplant Congress 8 Exposition 1995
- Hoeprich, M.R. “Rolling Element Bearing Fatigue Damage Propagation,” Transactions of the ASME 14 328 333 1992
- Kaechele, L.E. “Review and Analysis of Cumulative-Fatigue-Damage Theories,” Memorandum RM-3650-PR, August 1963 The Rand Corporation Santa Monica, CA
- Hamrock, B.J. Schmid, S.R. Jacobson. B.O., Fundamentals of Fluid Film Lubrication, 2 nd Ed. Marcel Dekker, Inc New York p478 2004
- Harris, T.A. Kotzalas, M.N. Roller Bearing Analysis,Essential Concepts of Bearing Technology, 5 th Ed. 152 CRC Press Boca Raton 2007