it is possible to reduce the weight of the car battery and extend farther.

NTN developed lubricants and adoption of new technologies can be sealed bearing retainer 50% decrease resistanceBack]NTN (NTN) using a newly developed lubricant and cage, developed a resistance to rotation compared to the previous product reduced by 50% or more sealed deep groove ball roller bearing. For the EV (electric vehicle) motor, can reduce mechanical losses and improve efficiency, it is possible to reduce the weight of the car battery and extend farther.
For supporting the rotor is sealed deep-groove ball bearing due to the light load, the circumstances under high-speed rotation, so the rotational resistance from most of the lubricant oil sealed in the internal stirring resistance. NTN To reduce this resistance, constituting the lubricating base oil, thickener and additives these three elements, the implementation of a lower viscosity base oil, and the fine structure of the improved hand jack. Base oils combined thickener has prompted function, therefore, will enhance the micronized base oil retaining capacity of the state, thereby reducing the amount of thickener used.
The noise when driving (quietness), the motor to ensure the original performance equal or lubricant. Further, with the use of the best ratio of lubricating oil additives, oxidation inhibited lubricant caused by the aging, to achieve the same or higher with the previous product life.
In addition to the development of oil, but also improves the rolling element cage and cage pocket shape of the contact hole is suppressed too much lubricating rolling surface of a bearing case.