Bearing for rotary shaft - has magnetically applied friction bearing surfaces between rotating shaft and fixed crank case

摘要

The rotary bearing has a roughened bush (B) with a friction surface (b) fixed to the turning shaft (13) by a sealed entraining O-ring (15). It also has a smooth section (A) with a friction surface (a) connected to the fixed crank case (12) via a sealed O-ring (14). The force attracting the two friction surfaces is provided by a cylindrical magnet (18) fixed to either the smooth or rough sections, and the magnet has only this function.