NSK relentlessly pursues innovative technologies and ongoing improvement in the quality of its products to contribute to a safer, more smoothly running society and to protect the global environment, in line with its corporate philosophy.
NSK leads the world in the areas of bearings, automotive components and precision machinery and parts.
The foundation of these product fields consists of tribology, materials, numerical simulation and mechatronics – NSK’s Four Core Technologies.
These are complemented and additionally shaped by manufacturing engineering, another important strength of NSK.
The systems and products that we have created on the basis of our Four Core Technologies and the ‘plus One’ of manufacturing engineering contribute to the development of industry and to people’s prosperity around the world.
In the years to come, NSK will continue its work in advanced technology, providing highly functional, premium products in response to the needs of the market.
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.
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Contributing to the environment and enhancing safety & security through our Four Core Technologies requires something to breathe life into these technologies. NSK applies AI to its equipment, utilizing IoT, and optimising its overall production framework while it works to realise the creation of smart factories that save on space & energy, and reduce manpower requirements.
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.
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