NTN develops new double-moulding method for oil-impregnated sintered bearings

October 29, 2012

October 29, 2012

NTN Corporation has announced the development of a new manufacturing method for the production of high strength, wear-resistant sintered bearings.


The “Multi Layer BEARPHITE” is an oil

impregnated sintered bearing 

The newly developed “Multi Layer BEARPHITE” is an oil-impregnated sintered bearing that features the internal layers of the bearing made of a material with a high-strength and outstanding wear-resistance, and the outer layers made of a high-strength structural material.

NTN claims this is the world’s first ‘double-moulding method’ – a process that uses two different materials to form a single object. The use of high-strength structural material for the outer layers of the bearing eliminates the need for special heat treatment. The pressing allows for greater dimensional precision with the sizing process, eliminating the need for conventional cutting processes.


The ‘double-moulding’ method, which is used to form two dissimilar materials into a single object, has been used for high-strength and outstanding wear-resistance 

In addition to oil-impregnated sintered bearings, the company states that the ‘double-moulding’ technology will also be applied to gears and other sintered machinery parts, offering a greater level of use in industrial machinery and automotive markets.


Posted by: Paul Whittaker, Editor ipmd.net, [email protected]   

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October 29, 2012

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