No.1009E 2012Automotive Technology Special Edition Thrust Needle Roller Bearings Used under Low Viscosity Lubrication Conditions

Author Central JAPAN Technical Center, Bearing & Driveline Operations Headquarters
Abstract In recent years, the use of low viscosity lubrication has become widespread for improved fuel efficiency in automobiles. While thrust needle roller bearings are known for high load carrying capacity, their friction loss is large due to a structure with high sliding contact. Also, there have been issues with wear occurring easily on both sliding and rolling contact areas under low viscosity lubrication conditions. Now for the fi rst time in the world we have designed a low torque thrust needle roller bearing for mass production that is usable even in oil with a viscosity of 3 mm2/s or less. The features are as follows.
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