NSK Develops Grease-lubricated Ball Bearings for High-speed Motors for Next-Generation EVs and HEVs
Resource from: NSK Likes:211
Nov 22,2012
NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Norio Otsuka) announced that it has developed grease-lubricated*1 ball bearings that enable a world-class, high-speed rotation of one million dmN*2-1.8 times the conventional speed—for electric vehicles (EVs) and hybrid vehicles (HEVs). NSK will promote sales of the new high-performance product to help extend the running distance, and contribute to better electricity/fuel consumption in EVs and HEVs. NSK is targeting annual net sales of ¥800 million in 2017 for this product and other EVs and HEVs products.
*1: Grease: A semisolid lubricant in which a thickener, a substance that turns lubricating oil into a semisolid, is dispersed in a lubricating oil (base oil)
*2: dmN = (pitch diameter of rolling element in mm) × (speed of rotation in rpm)
Development background
In recent years, automobile manufacturers' need for high-speed rotation has been increasing in order to ensure power output. The need exists to simultaneously downsize and lighten drive motors and power generators to extend the running distance and improve the electricity/fuel consumption in EVs and HEVs. Bearings that support motors include oil-lubricated bearings and grease-lubricated bearings, both of which need to provide high-speed performance. Grease-lubricated bearings have the advantage that they enable a more simplified surrounding structure than that of oil-lubricated bearings. On the other hand, they present a difficult challenge in terms of achieving the necessary high-speeds.
Product features
This product makes use of the proprietary NSK technologies outlined below to achieve a world-class, one million dmN.
1.The use of a highly rigid and lightweight cage with an improved shape made from a new resin material optimizes ball movement and enables high-speed rotation.
2.Optimization of the grease composition achieves improved bearing longevity under high-speed rotation.
•Suppression of heat generated during high-speed rotation by adoption of a low-viscosity base oil with good heat resistance.
•Furthermore, low tourque (low heat generation) has been enabled by selecting a thickener with outstanding fluidity
Product benefits
This product will contribute to the downsizing and greater efficiency of EV and HEV systems by achieving high-speed motor rotation (one million dmN).
(NSK)
【CBCC News Statement】
1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
Previous Gates Corporation and the National Institute for Automotive Service Excellence (ASE) Name Brett Conner Technician of the Year
Next Schaeffler precision bearings for solar energy offer long life and high efficiencies
Next Schaeffler precision bearings for solar energy offer long life and high efficiencies
BRIEF INTRODUCTION
Cnbearing is the No.1 bearing inquiry system and information service in China, dedicated to helping all bearing users and sellers throughout the world.
Cnbearing is supported by China National Bearing Industry Association, whose operation online is charged by China Bearing Unisun Tech. Co., Ltd.
China Bearing Unisun Tech. Co., Ltd owns all the rights. Since 2000, over 3,000 companies have been registered and enjoyed the company' s complete skillful service, which ranking many aspects in bearing industry at home and abroad with the most authority practical devices in China.
