Japan's NTN has announced the development of "Super Low-Torque Tapered Roller Bearings" which has the same life expectancy and reduces friction loss by half while maintaining rigidity. In addition, the bearing dimensions have been reduced by more than 10%. It can be used for general industrial machinery parts such as construction machinery, handling machinery, and hydraulic machinery, as well as gearboxes and differential gears for automobiles. The annual sales target is 2 billion yen in 2010.
Ultra low torque tapered roller bearing
Tapered Roller Bearings
The shape of the retainer housing
In addition to the optimized design to reduce the viscous drag and sliding resistance during rotation, the bearing retainer housing also reduces the frictional resistance of the lubricant by adopting a new shape, thereby reducing friction losses. In addition, by increasing the number of rollers and miniaturizing the crystal grains by heat treatment, the reduction in the rated load is compensated for, and the same life and rigidity as before are achieved.
Tapered roller bearings have a larger load capacity and higher rigidity than ball bearings (Ball Bearings), and are widely used, but the friction loss is large. In order to save energy, it is required to reduce the friction loss.
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