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 for a spinning or twisting machine comprises a guiding tube, which supports a neck bearing and a step bearing for a rotatably supported shaft. In proximity to the neck bearing, the guiding tube is supported by means of a metal membrane in a bearing housing, which is connectable to a spindle rail. The membrane is relatively rigid in radial direction; however, with respect to tilting motions of the guiding tube, it is very flexible. In the area of the step bearing, the guiding tube is supported against the bearing housing by means of a radial spring.

Abstract: A bearing assembly for mounting the movable member of a measuring instrument includes a bearing element engaging the movable member, a spring member applying a force to the bearing element in a direction toward the movable member, and a shock absorber fixed in the assembly operating as an abutment against which the bearing element is urged by the spring member. A liquid damping system provided in the assembly is formed by a first chamber located on the bearing side of the bearing element and a second chamber located on the opposite side of the bearing element with one or more passages being provided for the damping liquid to flow between the first and the second chamber during displacement of the bearing element, the passage being proportioned relative to the bearing element such that only a relatively small damping force is applied against the bearing element during displacement thereof.