No.1007E 2010 Super-low Friction Torque Technology of Tapered Roller Bearings for Reduction of Environmental Burdens

Category TECHNICAL REPORT
Author H. MATSUYAMA
Material Engineering R&D Dept., Research & Development Center
K. KAWAGUCHI
Experiment & Analysis Engineering Dept., Bearing & Driveline Operations Headquarters
A. UEMURA
Central JAPAN Technical Center (Bearing), Bearing & Driveline Operations Headquarters
N. MASUDA
European Bearing Technical Center, Bearing & Driveline Operations Headquarters
Abstract We developed a tapered roller bearing that has super-low friction torque that is up to 80% less than the friction torque of standard tapered roller bearings. It has been confi rmed through application on drive pinion bearings in passenger car rear axle differentials that this technology achieves torque and temperature rise levels as low as those of ball bearings. The developed bearings are expected to contribute to higher axle differential effi ciency and improved vehicle fuel effi ciency, which will result in reduced burdens on the global environment.
Keyword tapered roller bearing, low friction torque, high effi ciency, axle differential, fuel economy
Reference

M. TAKEUCHI : LFT Tapered Roller Bearings, Koyo Engineering Journal, No.127 (1985) 52.(in Japanese)
Y. ASAI, H. OHSHIMA : Development of Low Friction Tapered Roller Bearings, Koyo Engineering Journal, No.143 (1993) 23.(in Japanese)

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