[Formation of specially designed copper layer using unique copper powder for the same or lower torque than bronze bearings!]

NTN Corporation (hereafter, NTN) has developed the “BEARPHITE CL*” that has the same or better sliding performance than bronze sintered bearings by adding a small quantity of unique copper powder to iron sintered materials to form a copper layer on the surface

Sintered bearings are generally widely used in automobiles and office equipment, with the bearing material categorized as iron-based or bronze-based. Applications that require bearings with a high level of sliding performance, including automotive electrical components such as power window and fan motors, or photocopiers or laser printers, are made of bronze materials. With the increase in the price of copper in recent years, there has been greater demand for sintered bearings made of materials that can be used as a substitute for bronze bearings, and NTN started development of new materials.

The newly developed “BEARPHITE CL” is an iron-based sintered bearing with a small quantity of unique copper powder, and special material composition to form a specially designed copper layer on the bearing surface for the same or better sliding performance than bronze bearings. Being an iron-based bearing, the new bearing has a higher material strength than bronze bearings, as well as outstanding wear-resistance.

NTN has already started proposing the bearing to manufacturers of automobile electrical components and office equipment, and aims to market the bearing extensively in the automotive and industrial fields.

* CL:Abbreviation for Copper Layer.

[ Features ] Compared to conventional bearings


[ Product photo ]


[ Example of application ]


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