Thanks to the continuous upgrading of our Four Core Technologies of tribology, 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.
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. >>
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.
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