Abstract: The invention relates to a joint bush, for use in a joint between two components or workpieces, comprising a first sleeve-like bush section, which transforms at one sleeve end into a second flange-like bush section which projects over the circumferential surface of the first bush section.

Abstract: Spindles of spinning and twisting machines have a rotatable shaft supported in a bearing housing. The bearing housing comprises a neck bearing, a step bearing as well as a radially movable step bearing tube, which is arranged in an oil bath. The diameter of the shaft at the step bearing tube measures at the most six times the diameter at the neck bearing. Preferably, the diameter at the step bearing tube measures no more than between 3 and 3.5 mm. Thus the absolute bearing clearance in the step bearing tube can be significantly reduced, which results in a quieter running of the spindle and to a reduction in power consumption for the drive.

Abstract: A spindle for a spinning or twisting machine includes a step bearing sleeve which is supported in a damping tube. The damping tube is arranged, with clearance from an oil filled damping gap, free floating and radially movable in a bearing housing. The damping gap has preferably a gap width of 0.2 mm to 0.4 mm. The damping tube is provided with radial bore holes, which connect the damping gap with the area of the step bearing sleeve. In spite of even the smallest radial movements of the damping tube, a hydraulic damping as well as a hydraulic centering is possible.

Abstract: A spindle shaft is flexurally elastic at its shank part mounted in a bearing sleeve. The spindle shaft carries a belt-engaging wharve which is arranged underneath the neck bearing and to which a drive belt engages to rotate the spindle shaft. The bearing sleeve is arranged to have radial play within a spindle housing 10. The bearing sleeve is fastened at its lower end via a flexurally elastic tilting joint 40 to the spindle housing 10 connected rigidly to the spindle rail. The pulling force of the drive belt engaged to the wharve during operation deflects the bearing sleeve radially by tilting it about the tilting joint. Such deflection brings about, on the other hand, a pivoting of the bobbin-carrying upper part of the spindle shaft about the neck bearing in the opposite direction as a result of the bending moment occurring on the shank part, an inclination of the spindle shaft with its upper part is thus avoided.

Abstract: A resilient element connects the housing of the spindle collar bearing with the spindle rail and contains a circumferential arrangement of resiliently flexible rods surrounding with play the housing of the spindle collar bearing in a substantially parallel relationship thereto. The resiliently flexible rods which are arranged at substantially uniform circumferential spacing from one another extend at both of their ends from an associated common retaining sleeve for the related rod ends. One such retaining sleeve is anchored at the spindle rail. The other retaining sleeve is fixedly anchored at the housing of the spindle collar bearing in a region or at a location spaced from a housing side at which the spindle exits from such housing. The resilient element forms a spatial parallelogram permitting only radial movement of the housing against the spring action of the resiliently flexible rods without inclined positioning of the housing.

Abstract: In order to be able to achieve, in yarn manufacture, the very high speeds required by the textile industry in open-end spinning devices, for the purpose of increasing production, and in order to achieve high operating reliability and a long life of the spinning devices, the rotor which rotates at high speeds and is subject to a variable imbalance and which is guided in gas-dynamic radial plain bearings is guided in a bearing carrier which is elastically pivotable in relation to the rigid bearing journal. At the same time, the bearing journal is connected, but so as to be elastically pivotable, to the bearing carrier via a bearing-body joint. A first gas-dynamic radial plain bearing, which is located in the region in the center of gravity of the rotor, is arranged on the bearing carrier, and a second gas-dynamic radial bearing is arranged at the opposite end of the bearing carrier.

Abstract: So as to be able to achieve, in yarn manufacture, the very high speed required by the textile industry in open-end spinning devices, for the purpose of increasing production, the rotors which are connected to the spinning container including a spinning groove, are designed as a hollow shaft, and this hollow shaft is guided radially on a bearing journal located in the interior of the hollow shaft by means of gas-dynamic radial plain bearings designed as inner bearings. Gas-dynamic axial plain bearings are provided for the axial guidance of the rotor rotating at very high speed. The rotor together with the spinning container can be pushed in and out in a simple way from the spinning side, and to position the rotor over the entire speed range, permanent magnets are located in the bearing journal opposite the rearside of the spinning container and in an annular widened portion of the bearing journal.