NSKROBUST™ Series Ultra High-Speed Angular Contact Ball Bearings

An optimized internal design and NSK's proprietary materials provide next-gen speeds and low heat generation.

Optimization of the internal design realizes low heat generation and supports ultra high-speed rotation. This lineup features parts with NSK's proprietary materials such as SHX rings and EQTF™ balls to suit various applications.

NSKROBUST™ Series Ultra High-Speed Angular Contact Ball Bearings



An optimized internal design reduces heat generation to realize higher speeds and accuracy.


The X type with ultra high-speeds and heat-resistant long-life SHX steel achieves 4 times longer rolling fatigue life and 20% higher speeds than SUJ2 steel. In addition, the E Type with ultra long life bearing elements (EQTF™) improves seizure resistance and extends bearing life.


A wide lineup to meet your needs. Two contact angles are available: 18° for high-speed applications and 25° for high-rigidity applications. Three types of ball materials are available: steel balls, ultra long life bearing rolling elements (EQTF™), and ceramic balls.


Bearing Structure

Not all products are available in all regions. Please contact your local sales for more information.