Patent ID: 7023119

Claim:
An arrangement comprising a plain bearing ( 36 ) that contains sintered ferromagnetic material, and that serves for radial journaling of a shaft ( 34 ) made of ferromagnetic material, which shaft ( 34 ) is arranged rotatably and axially displaceably in that plain bearing ( 36 ) and has a free end ( 35 ); an axial bearing, provided at that free end ( 35 ), which comprises a dome-shaped ending ( 66 ) of that free end and a contact member ( 68 , 69 ), coacting with the dome-shaped ending, said contact member being made at least partially of ferromagnetic material; and at least one permanent magnet ( 72 ) that is arranged in a region around the free shaft end ( 35 ) between the axial end of the plain bearing ( 36 ) there and the contact member ( 68 ), in order to bring about a magnetic circuit ( 82 ) from one pole ( 74 ) of the at least one permanent magnet ( 72 ) via the plain bearing ( 36 ), the free shaft end ( 35 ) and the dome-shaped ending ( 66 ), and the contact member ( 68 ) to the other pole ( 76 ) of the at least one permanent magnet ( 72 ), to thereby to bring about a defined magnetic attractive force between the dome-shaped ending ( 66 ) and the contact member ( 68 ).