3029 Development of Super-Low Friction Torque Tapered Roller Bearing : Part 1: Effect of Internal Geometry on Friction Torque
Details
In this study, the effects of internal geometry on friction torque of tapered roller bearing have been clarified. To decrease the rolling resistance, decreasing the number of rollers, the roller effective length, and the crowning radius in the raceways should reduce the rolling area between the roller and the raceway. And, the mean roller diameter should be increased to offset the decline in dynamic capacity from decreasing the number of rollers. Based on these results, we have developed the super-low friction torque tapered roller bearing, which consists of three basic technologies, that is optimized internal geometry, lubricating oil flow control and compactness with special heat treatment for high-capacity. The torque of developed bearing is 80% lower than that of standard tapered roller bearing. This developed bearing has a lower friction torque than the ball bearing designed to have the same calculated life.
