Open-end spinning device with a spinning rotor

An open-end spinning device comprising a spinning rotor having a rotor shaft and bearing arrangement for supporting the rotor shaft, the bearing arrangement comprising a support-disk bearing defining a nip for receiving the rotor shaft and a magnetically-operative thrust bearing for retaining an end of the rotor shaft, the thrust bearing comprising a stationary bearing component having at least two permanent-magnet rings disposed between and in alternation with at least three pole disks with respective like-directional poles of the permanent-magnet rings oriented in opposition to one another and a rotating bearing component comprising ferromagnetic annular elements attached to the rotor shaft at the end thereof to be removable and replaceable in common with the rotor shaft, the end of the rotor shaft having a bearing area of a diameter less than the diameter of the rotor shaft and the rotating bearing component comprising at least three ferromagnetic annular elements disposed about the bearing area and spaced apart by intervening sections of the rotor shaft at spacings corresponding to the pole disks, one of the ferromagnetic annular elements being disposed most closely adjacent the support-disk bearing at a spacing therefrom between approximately 1 mm and 15 mm, each of the ferromagnetic annular elements having a diameter greater than the intervening sections of the rotor shaft in the range of between 1.2:1 and 4.5:1, and each of the ferromagnetic annular elements having an axial dimension between approximately 0.5 mm and 3 mm.