| 摘要 |
The invention concerns an arrangement comprising a plain bearing (36) that contains ferromagnetic material and serves for radial support of a shaft (34) made of ferromagnetic material. The shaft (34) is arranged rotatably and axially displaceably in that plain bearing (36), and has a free end (35). Provided at the latter is a step bearing which has a bearing dome (66) provided at that free end (35), and a contact member (68, 69), coacting with the latter dome, said contact member being made at least partially of ferromagnetic material. Also provided is at least one permanent magnet (72) that is arranged in the 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 form a magnetic circuit (82) from the one pole (74) of the at least one permanent magnet (72) via the plain bearing (36), the free shaft end (35), the bearing dome (66), and the contact member (68) to the other pole (76) of the at least one permanent magnet (72), and thereby to bring about a defined magnetic attractive force between the bearing dome (66) and the contact member (68). |
