NTN Japan has announced the development Super Low-Torque Tapered Roller Bearings which life si the same as the original, while maintaining rigidity of the friction loss at the same time, a decrease of half of the "ultra-low-Torque Tapered Roller Bearing. In addition, the bearing dimensions also decreased more than 10%. It can be used for building machinery, handling machinery, hydraulic machinery, such as general industrial machinery components, as well as vehicle gearbox and differential gear, etc., with annual sales target for 2010 of 20 billion yen.
The products developed not only use the optimum design to reduce the rotation of the viscous resistance and sliding resistance, the bearing retainer shell shape is also through the introduction of new lubricants reduces the stirring resistance, thereby reducing the friction loss,but also by increasing the number of rollers and the use of heat treatment to make crystal grains fine, and make up for the reduction of the rated load, the original implementation with the same life and rigidity.
Tapered Roller Bearings with ball bearings (Ball Bearings) compared to the load capacity, high rigidity, which are widely used, but a larger friction loss. In order to save energy ,it need to reduce the friction loss.