NSK offers high-speed ball bearings for applications such as hybrid systems
NSK
Ball bearings
NSK’s ultra high-speed ball bearings are suitable for use in the drive motors and power generators of next-generation hybrid systems.
The ball bearings can achieve rotations of more than 30,000 revolutions per minute and, according to the company, enable manufacturers to scale-down the size and weight of drive motors and power generators.
NSK’s devices feature a plate, installed at the lubricant port of the bearing module, which controls the flow rate of lubricants. It is designed to ensure that oil is supplied to the inner ring, where lubrication can easily become depleted, in order to reduce heat caused by friction.
According to the company, friction has also been reduced through the ball diameter and groove dimensions inside the bearing module, which control friction and heat during high-speed rotation.
Additionally, cage vibration has been dampened by adjusting the gap between the cage, balls and inner ring — reducing wear at contact points.
Key features
- Annular part of the cage has be thickened
- Cage strengthened in order to prevent deformation through centrifugal force
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