Info
Info
News Article

NSK Develops Ultra-high-speed Ball Bearing For EV Motors

News

NSK Ltd. has developed a new ultra-high-speed bearing ideal for electric vehicles, including battery electric, hybrid, and other new energy vehicles.

The new bearing enables electric motors to operate at higher speeds, improving fuel economy (reducing power consumption per unit distance), increasing maximum vehicle range, and contributing to enhanced user comfort. NSK is targeting JPY10 billion ($91 billion) in sales by 2030.

To enhance sustainability, the automotive industry is rapidly expanding the development and production of electric vehicles, hybrids, and other new energy vehicles. However, maximum range on a single charge remains a concern for consumers, and there is significant demand for larger capacity battery packs and/or improved efficiency to allow for greater flexibility and peace of mind when purchasing battery EV and other new energy vehicles.

In light of these needs, automakers are pursuing smaller and lighter automotive components, and developing faster, higher output motors operating at higher efficiencies. Accordingly, bearings used in powertrains, especially in electric motors, are being subjected to increasingly higher speeds and performance demands.

Bearing rotation during high speed operation can cause grease deterioration due to high temperatures, resulting in bearing seizure/failure. High speeds can also lead to the bearing cage being deformed/destroyed by centrifugal force.

The new bearing is filled with a special NSK grease that reduces heat generated during high speed operation, prolonging both grease and bearing life as well as reducing the risk of seizure compared to conventional products.

Newly Developed Cage includes thinner (lighter) retainer tabs reduce cage deformation or breakage due to centrifugal force. Higher rigidity cage base (spine) resists deformation at high speeds. The new design significantly reduces deformation of the cage during high speed operation for reliable long-term use.

Newly developed cage material, a high rigidity cage resin, features high rigidity and high heat resistance reduces cage deformation during high speed operation. High rigidity reduces effect of centrifugal force, thereby reducing cage deformation during high speed operation. Proprietary NSK grease and newly developed cage enable bearing operation at dmN = 1.4 million (e.g. 35 mm bore diameter bearing at 30,000 RPM).

NSK's newly developed bearing offers the highest permissible speeds in the world for automotive motors. This enables customers to develop and implement electric motors that operate at significantly higher speeds. Higher motor output contributes to improving fuel economy (reducing power consumption per unit distance), increasing maximum vehicle range, and contributing to enhanced user comfort.

Higher speeds also enable utilisation of smaller motors, reducing vehicle weight and increasing space for other components, more battery cells, or a larger vehicle interior. In pursuit of leading-edge technology, NSK is continuing development and expects to announce bearing models capable of dmN = 1.6 million by the end of 2020.

SAKOR Technologies Announces Dynamometer Line For Testing Electric Motor Efficiency
European SiC Conference Delayed For A Year
Microchip Switchtec PAX Advanced Fabric Gen 4 PCIe Switches Released To Production
Modular Evaluation Platform For Discrete CoolSiC MOSFETs Allows Testing Of Different Driving Options
“The PCIM Europe Digital Days”: Program And Registration Online
FEV To Commission New Battery Test Centre In Germany
Infineon Introduces CoolSiC MOSFET Eval Board
Arrow Electronics, Panasonic Industry, And STMicroelectronics Join Forces To Deliver IoT Modules For Smart Applications
StrongIRFET™ MOSFETs In D²PAK 7pin+ Package Targeted At Battery-powered Applications
UK Shift To Pedal Power Creates Boom In EBike Kit Sales
Power Block MOSFET From Diodes Incorporated Increases Power Converter Efficiency And Saves PCB Space
Analog Devices’ Integrated Isolated RS485 + Isolated Power Transceivers Reduce Design Time
EPC CEO To Present GaN Webinar
Ducati And MT Distribution Together For Urban Mobility
Citroën Reveals Its All-electric ë-Dispatch
Taiwan Semiconductor Rectifiers With Wettable Flank Contacts Offers Best-in-Class (8A/1kV) Specifications
Volvo XC40 Recharge Pure Electric Available To Order In UK
Shimano Launches Three New Batteries For E-bikes
Greencoat Solar To Acquire 156MW Portfolio From BlackRock Real Assets And Lightsource Bp
Gartner Names GaN Systems A 'Cool Vendor'
Mercedes-Benz’s Global Battery-production Network Grows
Nissan Zero Emission Ambulance Becomes Part Of ‘Zero Emission Tokyo’ Initiative
TROPOS Delivers First Electric Compact Utility Vehicle
VisIC And ZF To Work On 400V Electric Drivelines

Info
×
Search the news archive

To close this popup you can press escape or click the close icon.
Logo
×
Logo
×
Register - Step 1

You may choose to subscribe to the Power Electronics World Magazine, the Power Electronics World Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
X
Info
X
Info
{taasPodcastNotification}