Posted to Products on Wednesday, March 14, 2012 Share:

Ultra high-speed ball bearings for motors and power generators

NSK reports that it is developing ball bearings that enable ultra high-speed rotation by reducing friction. The new product will contribute to better fuel economy in next-generation hybrid vehicles by facilitating ultra-high-speed rotation in motors and power generators.

Automotive manufacturers have a growing need for ultra-high-speed rotation technologies to secure output power while they continue scaling down the size and weight of drive motors and power generators in order to improve fuel economy in next-generation hybrid systems.

NSK's new ball bearings, which are for use in motors and power generators in next-generation hybrid vehicles, will deliver extreme high-speed rotation at over 30,000rpm, which is 50 per cent faster than conventional bearings. The product facilitates miniaturisation of next-generation hybrid systems while enabling these high speeds in drive motors and power generators.

Product Features

Improved lubrication: A plate to control the flow rate of lubricants was installed at the lubricant port of the bearing module. The plate ensures oil is supplied to the inner ring, where lubrication tends to become depleted easily, in an environment where tremendous centrifugal force is generated during ultra high-speed rotation, thereby reducing friction-generated heat
Reduced friction: Optimised ball diameter and groove dimensions inside the bearing module control friction and heat even under ultra-high-speed rotation, thereby preventing seizing. Cage vibration is dampened by adjusting the gap between the cage, balls and inner ring, thereby reducing wear at contact points
Greater durability: The annular part of the cage is thickened and the cage strengthened to prevent deformation by the centrifugal force applied to the cage during extreme high-speed rotation of the bearings

For more information about NSK's ultra-high-speed ball bearings, go to www.nskeurope.com.

European Bearings Business Unit
Northern Road
Newark
NG24 2JF
UNITED KINGDOM

+44 (0)1636 605123

info-uk@nsk.com

www.nskeurope.com

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