Bearing for rotating shaft utilising magnetic repulsion - has shaft and housing with radial alignment of magnetic poles

Abstract

Abstract A hollow shaft (2) is made of magnetic material in such a way that the whole of the outer surface forms the north pole and the bore forms the south pole. The bearing sleeve (4) is made in a similar manner but with the polarity reversed. This results in a magnetic repulsion between the bore of the bearing sleeve and the surface of the shaft. This magnetic repulsion keeps the shaft central in the bore of the sleeve as any tendency to move to one side increases the repulsive force on that side. Using a shaft of 99 mm dia. in a sleeve of 100 mm dia. by 20 mm wide, the centering force reaches 80 daN when the shaft touches the bore.

Inventors

No inventors recorded.

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