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Four core technologies

Driven by Innovation

Thanks to the continuous upgrading of our Four Core Technologies of tribology (friction control technology), materials, numerical simulation and mechatronics, we´ve established a Technology Platform that serves as the basis for the product design of our rolling bearings, automotive components and precision parts. And by integrating these advanced technologies, we are strengthening our capabilities to develop next-generation products, enabling us to respond quickly and effectively to customer needs.

Technical Insight

We have pooled the expertise of our Engineers and created technical articles on product performances, bearing features, materials, lubricants, applications, bearing components, and much more.

These reviews outline problem areas, highlight new developments and everyday considerations when choosing bearings.  >>

  • Four Core Technologies
  • STIFF

Four Core Technologies

Tribology (friction control technology)

Tribology (Friction Control Technology)

Good lubrication is vital to bearings that have to withstand linear and rotational loads. Thanks to improved grease formulations and surface processing methods, we´re in a position to develop faster, quieter and more durable bearings capable of sustaining the heaviest of loads.

Numerical Simulation

As part of our product development, computer simulations play an essential role in the process. Through them, we can not only assess our products under extreme conditions, but also gain valuable insights into product design and finishing processes. 

Materials

Materials are continually being developed in order to improve the functionality and durability of rolling bearings. And NSK is right there at the leading edge. Our research focuses mainly on the areas of material design, heat treatment, performance evaluation and analytical evaluation. The results of this research go straight back into our products.

Mechatronics

Through the combination of mechanics and electronics, key advances in high-performance motors, control technology, highly precise sensing technology and biomedical microelectromechanical systems become possible. Mechatronics also play an important role in assembly technology applications that demand high temperatures, power density and reliability.

STIFF

STIFF reliably calculates a bearing’s lifespan

For some time now, experts have known that a long list of loads and factors must be taken into account to reliably estimate a bearing’s lifespan. However, NSK’s latest developments include optimised methods and procedures that significantly improve the quality of such estimates.

Conventional methods of projecting a bearing’s lifespan are based on standardised calculations, also known as the catalogue method. These methods are stipulated in the ISO 281 norm. The parameters are bearing load, speed of rotation, load rating and bearing type. The resulting bearing lifespan is L10 or L10h.

As well as taking the above-mentioned parameters into account, NSK’s software program STIFF also considers the bearing’s exact internal geometry, the running clearance or preload, deformation of the shaft bearing system, the load zone and the load distribution between the rolling elements and the raceway. In this model, the rolling elements are divided into cross sections. A modified reference service life is determined for each cross section. These figures are integrated using the time components for each load case. In this way, the software supplies data that enables rapid parametric analyses. Special adjustments to the bearing can also be tested quickly.

Other procedures

  • FEM analysis examines the distribution of stress factors within the bearing’s components to help optimise bearings for non-standard applications.
  • Frequency analysis looks into the noise generated by a bearing within an application. This provides information about the bearing’s running properties.
  • The TCOS (Technical Computing On-line Service) is a collection of calculation programmes for the online analysis and calculation of bearings, taking a large number of parameters into account.
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