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Lubricant Effects on Rear Axle Tapered Roller Bearing Wear
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English
Abstract
Rear axle tapered roller bearing wear has been studied in bench and car tests, using both commercial and experimental gear lubricants. In bench tests, magnitude of wear was affected by both lubricant additive treatment and lubricant viscosity; increased wear resulted from reduction in viscosity with lead soap-active sulfur and Pb-S-Cl lubricants but not with P-S and Zn-P-S-Cl lubricants. Substantial decreases in wear from one bearing lot to subsequent lots apparently resulted from mechanical improvement in the bearing manufacturing technique. These wear decreases, for a given bearing speed and load combination, were accompanied by decreased temperature and thickness of roller-end surface film formed from the lubricants. In rear axle car tests run as far as 94,000 miles, P-S additive package blends having viscosities as low as 4 cs at 210 F performed satisfactorily, although bearing wear was somewhat greater than that with P-S blends having viscosities of 9 cs at 210 F.
Citation
McClintock, R., "Lubricant Effects on Rear Axle Tapered Roller Bearing Wear," SAE Technical Paper 690778, 1969, https://doi.org/10.4271/690778.Also In
References
- Griswold W. R. “Hypoid Rear-Axle Design and Lubrication.” SAE Journal 40 May 1937 194 204
- McClintock R. Osborne R. E. “The Effect of Lubricant Viscosity on Rear Axle Gear and Pinion Bearing Operation.” Lubrication Engineering 20 10 October 1964
- Cornish R. F. “A Critical Look at Tapered Roller Bearing Wear in Hypoid Axles.” SAE Transactions 74 1966 650440
- Beeck O. Givens J. W. Williams E. C. “On the Mechanism of Boundary Lubrication II. Wear Prevention by Addition Agents.” Proc. Royal Soc 177 p. 103 1941
- Prutton C. F. Tumbull D. Dlouhy G. “Mechanism of Action of Organic Chlorine and Sulfur Compounds in Extreme Pressure Lubrications.” J. Inst. Petroleum 32 p. 90 1946
- Rounds F. G. “Effects of Additives on the Friction of Steel on Steel Part I. Surface Topography and Film Composition Studies.” ASLE Trans 7 p. 11 1964
- Thorpe R. E. Larson R. G. “Antiseizure Properties of Boundary Lubricants.” Ind. Eng. Chem. 41 p. 938 1949
- McClintock R. “Effect of Lubricants on Rear Axle Pinion Bearing Break-in.” ASLE Trans 6 p. 154 1963
- Schreiber T. P. Ottolini A. C. Johnson J. L. “The X -ray Emission Analysis of Thin Films Produced by Lubricating Oil Additives.” Applied Spectroscopy 17 1 1963
- Inorganic Index to the Powder Diffraction File, ASTM Publication PD lS-17i 1967