A fluid film bearing, includes a first and second part, wherein the first part includes at least two annular sliding surfaces, wherein the second part includes a respective group of pads for each of the annular sliding surfaces, wherein a respective pad sliding surface of each pad in a respective group supports the respective annular sliding surface, wherein the pads of each group are distributed in the circumferential direction along the second part, wherein at least one pad of a selected one of the groups is arranged such that spacing of the pads in the selected group along the circumference is irregular and/or wherein the selected or a selected one of the groups includes two different types of pads and/or wherein the pads of the or a selected one of the groups are offset in the circumferential direction with respect to the pads of a further one of the groups.

A bearing arrangement includes a shaft, at least one contact bearing and at least one non-contact bearing and a controller. The controller is configured to control a magnitude of a restoring force applied to the shaft by the non-contact bearing in accordance with a sensed parameter such that a stiffness of the shaft is modified such that one or more resonance frequencies of the shaft are moved away from one or more external forcing frequencies.

A sliding bearing includes:—an inner ring element;—an outer ring element;—at least one sliding bearing element, which is arranged between the inner ring element and the outer ring element. The sliding bearing element has multiple sliding bearing pads, wherein the individual sliding bearing pads each have a radial bearing surface and a fastening profile located opposite the radial bearing surface. The inner ring element has at least one receiving profile on its radial outside, which receiving profile serves for the positive locking connection between the sliding bearing pads and the inner ring element.

A sliding bearing includes: —an inner ring element; —an outer ring element; —at least one sliding bearing element, which is arranged between the inner ring element and the outer ring element. The sliding bearing element has multiple sliding bearing pads, wherein the individual sliding bearing pads each have a radial bearing surface and a fastening profile located opposite the radial bearing surface. The inner ring element has at least one receiving profile on its radial outside, which receiving profile serves for the positive locking connection between the sliding bearing pads and the inner ring element.

A bearing monitoring/analysis system may comprise an acoustic emission sensor positioned adjacent a fluid film bearing, component thereof, and/or adjacent structure such that the acoustic emission sensor may collect a signal from the bearing, wherein the signal may be analyzed to allow a user to gain information regarding the fluid film bearing.

A turbocharger and a method of manufacturing a floating bush with which noise can be reduced, and the rotation speed can be increased. In a turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner, at two axially separated positions via floating bushes, by an inner circumferential surface disposed so as to surround the rotating shaft in a bearing housing, an inner circumferential surface of each of the floating bushes has a non-circular shape in which the curvature of the cross-sectional shape varies in the circumferential direction.

In one aspect, an improved electric transmission assembly is provided that includes a hydrodynamic bearing. The electric transmission assembly includes a stator arranged inside of an outer housing. A rotor is configured to be rotatably driven by the stator. The rotor can include a rotor shaft having a first gear configured to driveably engage with a differential. A hydrodynamic bearing is arranged between the rotor shaft and the outer housing. The hydrodynamic bearing is formed from a non-conductive material. Specifically, the hydrodynamic bearing can be formed from a polymeric or plastic material. In one aspect, the hydrodynamic bearing is formed from a non-metallic material.

A liquid guiding structure for a fluid dynamic pressure bearing, comprising: a fluid dynamic pressure bearing having an inner recess chamber and a liquid guiding trench which is formed between two sides of the inner recess chamber so as to form a circular close liquid guiding structure; wherein the liquid guiding trench includes at least two small V shape paths and at least one large V shape path; the large V shape path is larger than the small V shape paths and is located between the at least two small V shape paths. First angles at tip ends of the at least two small V shape paths are equal. A second angle between connections of the small V shape path and a respective large V shape path is larger than the first angle at tip ends of the at least two small V shape paths.

An electric submersible pump (ESP) assembly. The ESP assembly comprises an electric motor, a centrifugal pump, and a hybrid magnetic radial bearing, wherein the hybrid magnetic radial bearing is disposed inside the electric motor or disposed inside the centrifugal pump.

The present invention highlights a lemon shaped guide that may be used in a rotating machine to suppress excessive rubbing. Rubbing, between a rotor and a guide, is critical in industries; since, it may even lead to severe damages. The lemon shaped guide is based solely on the mechanical design, that is more economical and quickly implementable than the other traditional techniques, such as circular guide, or more advanced sophisticated devices, for example, magnetic bearings. The lemon shaped guide is designed from two circles—having the same radius, and centers on the same line with some distances—which are the most significant designing parameters. Once equipped with a rotating machine, the lemon shaped guide may perform better at minimizing rubbing, between rotor and stator operating at higher speed, than the traditional circular shaped guide.