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.

Tektronix And Coherent Solutions Announce Exclusive Partnership Providing Fully-Integrated Optical Communications Platforms
Pre-Switch Demonstrates Efficacy Of AI-based Soft Switching Using 200kVA Inverter Reference
MAHLE Powertrain Opens New Facility To Streamline EV Battery Development
Infineon Expands 1200V CoolSiC Diode Family
Protect Against Rootkit And Bootkit Malware In Systems Booting From External SPI Flash Memory
Power Integrations’ SCALE-iDriver For SiC MOSFETs Achieves AEC-Q100 Automotive Qualification
AKASOL Adds New Battery Production Line At Its Facility In Germany
Newport Chosen By UK Government To Help Lead UK Electric Revolution
ABB Completes Acquisition Of Chinese EV Charging Provider Chargedot
Coronavirus: ENERGY STORAGE EUROPE 2020 Postponed
GTAT And ON Semi Sign SiC Agreement
GT Advanced Technologies And ON Semiconductor Sign Agreement For Production And Supply Of Silicon Carbide Material
High-frequency GaN Transistors Achieve Record Efficiency At 100V
96 Percent Efficiency; 33 Percent Smaller
Toshiba Announces A New Dual Output IGBT / MOSFET Driver
Infineon Withdraws Outlook For FY20
Efinix’s Trion FPGA Silicon Platform Expands Into Europe
ACM Research Launches Stress-Free Polishing Tool For Advanced Packaging Applications; Delivers First Tool To Leading Chinese OSAT
Microchip Expands SiC Family
Siemens Unveils UK’s First Residential Avenue Fully Converted To Provide Lamppost EV Charging Points
NSK Develops Ultra-high-speed Ball Bearing For EV Motors
HZZH Power Module Uses Transphorm GaN
Toshiba To Supply SCiB Rechargeable Battery For Nissan And Mitsubishi Hybrids
APEX AP-0 Concept EV Sports Car Revealed

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}