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NSK has designed and manufactured the Spacea series of bearings and the Aqua-Bearing.

The company said the Spacea series of bearings provides high performance and reliability under all types of demanding operating conditions.

The bearings meet a wide range of technical requirements with a programme of high-performance materials, surface finishes and specially-developed lubricants, including solid types.

The Aqua-Bearing is a corrosion-resistant bearing for light-load applications in the operating temperature range up to 40C.

The use of a special fluorine plastic for the inner and outer rings and a fluorine plastic cage enables the Aqua-Bearing to achieve corrosion resistance equal to ceramic bearings.

The effectiveness of NSK’s materials specification means that the Aqua-Bearing is able to handle applications in strong acids or alkalis, ozonised water, various kinds of vapour and halogen gases.

The fibre-reinforced fluorine material gives the inner and outer bearing rings increased strength and rigidity.

It also provides an endurance life of over 1,000 times that of A1S144OC stainless steel bearings and five times that of previous PE (Polyethylene) bearings under a light load in an acid solution.

For operations in corrosive environments where higher temperatures are encountered (up to 200C) NSK recommends its Spacea bearings with inner and outer rings of martensitic stainless steel, ceramic balls and fluororesin cages.

These bearings are grease free, employing a solid high-performance fluorine solid lubricant.


NSK, a global leader in motion and control products, has developed and continuously upgrades four core technologies: tribology, material engineering, analysis technology and mechatronics, to provide the platform for the company’s innovative product developments. This technology platform provides the basis for the design of NSK’s rolling bearings, automotive components and precision parts. In addition, by integrating these advanced technologies, NSK is able to respond quickly and effectively to customer requirements across all key sectors.

NSK is a driver of new technology developments, with a full line-up of products spanning general industrial, automotive and precision parts industries. These include bearings for mechanical and electrical machinery, IT and aftermarket; innovative automotive products such as electric power steering (EPS) automatic transmission components, steering columns and other steering related products; and precision linear motion components such as linear guides, ballscrews, X-Y tables, mechatronic products and Megatorque motors.

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