A device and a method for winding and twisting fibrous material in ring spinning and ring twisting frames are disclosed. The device and method allow the operating speed of the frames to be substantially increased, achieve higher productivity during ring spinning, and reduce the outlay, in terms of time and material, for assembling and servicing the device. This is achieved in that at least two high-temperature superconducting stators, together with the thermally connected cooling devices thereof, are arranged in a contactless manner and in parallel with one another along the progression of the spindle row, and the magnetic field-generating rotors, oriented coaxially with respect to the spindle, are introduced in a magnetically levitating manner in the magnetic field of the continuous intermediate space, between the stators which are adjacent in each case.

An axial bearing for a spinning rotor of an open-end spinning machine includes a static bearing component having axially polarized permanent magnet rings delimited on both sides by ferromagnetic pole disks arranged in a bearing housing, the static bearing component interacting with a dynamic bearing component formed by ferromagnetic webs arranged on a rotor shaft of the spinning rotor. Each pole disk includes a disk ring, a central opening, a vertical axis, and a horizontal axis. The disk ring includes an area of reduced ferromagnetic material on an inner circumference thereof at the vertical axis as compared to a remaining inner circumferential area of the disk ring.

The invention relates to a shaft bearing for mounting a spinning rotor of a rotor spinning machine, with a double-row rolling bearing, which comprises two rolling-body rows that roll on their inner side without an inner ring, on two inner bearing races arranged at a distance from one another on a rotor shaft, and on their outer side on outer bearing races of two separate outer rings. According to the invention, the outer rings are mounted resiliently in a shaft bearing housing so as to provide a shaft bearing for mounting a spinning rotor of a rotor spinning machine with high reliability, even at rotational speeds of more than 110,000 revolutions per minute, which shaft bearing also allows trouble-free operation of a rotor spinning machine equipped with the shaft bearing.

A bearing arrangement (100) for a spinning rotor shaft (200) of an open-end spinning device, a spinning rotor shaft (200) for such a bearing arrangement (100) and a spinning rotor drive device comprising such a bearing arrangement (100) and such a spinning rotor shaft (200). The bearing arrangement (100) comprises at least one active magnetic radial bearing (110) for the spinning rotor shaft (200) which can be influenced by means of an electronic control system (300). The bearing arrangement is characterized in that the bearing arrangement (100) comprises an active magnetic axial bearing (130) for the spinning rotor shaft (200) which can be influenced by means of the or another electronic control system (300).

Spindle pot bearing for a twisting machine, in particular a two-for-one twisting machine or cabling machine, having a bearing bush for connecting a spindle pot base to a spindle in an interlocking manner in an axial direction. In order to provide a spindle pot bearing for a twisting machine that ensures that the position of the spindle pot on the spindle is reliably secured, it is provided that: a first bearing portion of the bearing bush for connecting, in an interlocking manner in the axial direction, to a first bearing member arranged on the spindle has, at a distance with respect to the direction of the longitudinal axis from a shoulder limiting the first bearing portion, latching protrusions which protrude from an inside of the bearing bush and are movable between a blocking position and an unblocking position; a second bearing portion of the bearing bush, said second bearing portion adjoining the first bearing portion in the direction of the longitudinal axis, is designed for interlockingly connecting to the spindle pot base in such a way that locking in the axial direction is possible; and a blocking is arranged on the spindle pot base, which blocking fixes the latching protrusions in the blocking position when the spindle pot base is in an operating position.

A device and a method for winding and twisting fibrous material in ring spinning and ring twisting frames are disclosed. The device and method allow the operating speed of the frames to be substantially increased, achieve higher productivity during ring spinning, and reduce the outlay, in terms of time and material, for assembling and servicing the device. This is achieved in that at least two high-temperature superconducting stators, together with the thermally connected cooling devices thereof, are arranged in a contactless manner and in parallel with one another along the progression of the spindle row, and the magnetic field-generating rotors, oriented coaxially with respect to the spindle, are introduced in a magnetically levitating manner in the magnetic field of the continuous intermediate space, between the stators which are adjacent in each case.

Disclosed is a needle roller bearing, in particular for use in supporting a bottom roller in a spinning machine. The needle roller bearing includes an inner ring and an outer ring which are arranged such that the inner ring and the outer ring are rotatable relatively to each other around a bearing rotation axis. A rolling chamber is defined between the inner ring and the outer ring, in which a plurality of needle rollers are arranged. A solid lubricant is disposed in the rolling chamber of the needle roller bearing.

Disclosed is a needle roller bearing, in particular for use in supporting a bottom roller in a spinning machine. The needle roller bearing includes an inner ring and an outer ring which are arranged such that the inner ring and the outer ring are rotatable relatively to each other around a bearing rotation axis. A rolling chamber is defined between the inner ring and the outer ring, in which a plurality of needle rollers are arranged. A solid lubricant is disposed in the rolling chamber of the needle roller bearing.

Spindle pot bearing for a twisting machine, in particular a two-for-one twisting machine or cabling machine, having a bearing bush for connecting a spindle pot base to a spindle in an interlocking manner in an axial direction. In order to provide a spindle pot bearing for a twisting machine that ensures that the position of the spindle pot on the spindle is reliably secured, it is provided that: a first bearing portion of the bearing bush for connecting, in an interlocking manner in the axial direction, to a first bearing member arranged on the spindle has, at a distance with respect to the direction of the longitudinal axis from a shoulder limiting the first bearing portion, latching protrusions which protrude from an inside of the bearing bush and are movable between a blocking position and an unblocking position; a second bearing portion of the bearing bush, said second bearing portion adjoining the first bearing portion in the direction of the longitudinal axis, is designed for interlockingly connecting to the spindle pot base in such a way that locking in the axial direction is possible; and a blocking is arranged on the spindle pot base, which blocking fixes the latching protrusions in the blocking position when the spindle pot base is in an operating position.

A bearing system and associated method of operation are provided to support a spinning rotor having a pot and a shaft of an open-end spinning device with two radial bearings and at least one axial support bearing, wherein at least one of the radial bearings is an active magnetic bearing. The axial support bearing is configured such that a magnetic bearing acts in opposition to one or both of an aerostatic air bearing or a mechanical starting element.