Aktiebolaget Skf

Arne Lars Jonas Kullin

Hans Wendeberg

Juergen Reichert

Marcus Loof

Magnus Kellstrom

Patrik Costa

Roger Gustav Petter Berg

Roger Daniel Emlind

Andreas Lofqvist

Helena Jacobsson Sandlund

Yvonne Rydberg

A roller bearing ring having at least one raceway. The raceway provides a first and a second axial end and a diameter of the first axial end and a diameter of the second axial end are either both greater than the mean diameter of the raceway or both less than the mean diameter of the raceway. The roller bearing ring includes a projection, which is on the same side of the bearing ring as the raceway and which limits the raceway without being a part of the raceway.

Roller bearing ring and dismounting procedure

A retained roller set includes first and second individual tube-shaped members each having first and second axially spaced rings connected by bar elements that define pockets therebetween, the tube-shaped members being coaxially arranged and radially spaced to define a circumferentially extending intermediate space therebetween in which a plurality of roller elements are received and retained by the pockets of the first and second tube-shaped members.

Retained roller set and roller bearing including same

A spherical roller bearing providing an inner ring, an outer ring, rollers for rolling on raceways arranged on the rings, and a cage for holding the rollers spaced apart from each other. The cage having an annular core and a plurality of bars delimitating a plurality of pockets for the rollers, the annular core including two side faces from which the bars protrude axially outwardly, the inner and outer rings being rotatable with respect to each other around a bearing axis. The annular core further provides a plurality of spacing elements that protrude from the side faces of the annular core designed to come into contact with side faces of the rollers in order to prevent the rollers from moving axially towards the center of the bearing.

Spherical roller bearing

A bearing arrangement for a fluid machinery application employing an axially locating bearing. The axially locating bearing includes: a first angular self-aligning contact bearing arranged next to a second angular self-aligning contact bearing. Each of the first angular self-aligning contact bearing and the second angular self-aligning contact bearing includes a set of rolling elements arranged in a row and interposed between a respective curved inner raceway and an associated curved outer raceway. Each roller is a symmetrical cylindrically-shaped roller having a curved raceway-contacting surface. Each roller is inclined respective to the axial direction of the shaft by a respective contact angle. The rollers support an axial force and a radial force. The axially non-locating bearing position is arranged spaced apart from the axially locating bearing position, as seen in the axial direction. Examples of fluid machinery applications include: a wind turbine, water turbine or a propulsion turbine.

Bearing arrangement for fluid machinery application

An assembly for a rolling element bearing, the assembly including a first cage segment and a second cage segment which are releasably connectable to one another, and at least one rolling element. The assembly further comprises a cage pocket for receiving the at least one rolling element. The cage pocket is at least partly defined by a cage pocket wall of at least one of the first cage segment and the second cage segment. The assembly is such that, when the at least one rolling element is in the cage pocket, the at least one rolling element prevents the first cage segment and the second cage segment from being releasably disengaged. A rolling element bearing can incorporate such an assembly.

Assembly for a rolling element bearing

A bearing cage for retaining rolling elements of a rolling element bearing, the bearing cage constructed from a sheet metal element. The cage having at least one cage pocket configured to receive at least one rolling element. The at least one cage pocket is formed by two abutting cage bars that extend axially between a first and a second axially displaced ring element. At least one of the cage bars includes a first portion. The first portion is constructed by folding a part of the sheet metal element such that the first portion extends in a radial direction of the cage and such that an axially extending fold is provided on the cage bar. A rolling element bearing and a method of producing the bearing cage is also provided.

Bearing cage, rolling element bearing and method

A bearing cage for retaining rolling elements of a rolling element bearing. The bearing cage is made of a sheet metal element. The cage provides at least one cage pocket configured to receive at least one rolling element. The at least one cage pocket is formed by two abutting cage bars that extend axially between a first and a second axially displaced ring element. The bearing cage is made of a one-piece sheet metal element and the first and the second ring element is undivided in its circumference without any joints or connections for joining an interrupted ring element. Furthermore, a rolling element bearing and a method of producing the bearing cage is provided.

A wind turbine rotor shaft arrangement comprising a shaft supporting wind turbine blades and a non-rotating first housing structure (mounted to a wind turbine nacelle framing) along with a first rolling bearing supporting (in a first axial direction) the shaft to the first housing structure at a first support point. The first rolling bearing is a self-aligning bearing comprising a first inner ring, a first outer ring and a set of rolling elements interposed therebetween. Each roller is asymmetric, having a curved raceway-contacting surface contacting at least one of the curved inner/outer raceways of the first inner/outer ring, respectively. A contact angle between each roller and the respective raceway is inclined respective to the shaft radial direction. A non-rotating second housing structure (mounted to the wind turbine nacelle framing) supports the shaft. A second rolling bearing supports the shaft by the second housing structure at a second support point.

Wind turbine rotor shaft arrangement

The present invention relates to a bearing arrangement having a first and a second support structure for supporting a rotating member, a first rolling bearing supporting the first support structure in relation to the second support structure at a first support location, a second rolling bearing supporting the first support structure in relation to the second support structure at a second support location. The first and second rolling bearings are arranged in a coaxial configuration in relation to each other. Furthermore, the first rolling bearing forms a radially outer bearing, and the second rolling bearing is arranged radially inside the first rolling bearing by a bearing radial distance, and the first support location and second support location are axially aligned. The present invention also relates to a method for manufacturing a bearing arrangement.

Bearing arrangement

A spacer device for roller elements of a toroidal roller bearing includes an inner ring and an outer ring. The toroidal roller bearing allows for axial and angular displacement between the inner and outer rings. The spacer device comprises a first roller element-contacting surface and a second roller element-contacting surface on opposite sides thereof. First and second roller-contacting surfaces are arranged to separate two adjacent roller elements in a tangential direction of the toroidal roller bearing when the spacer device is in use. Each of the first and second roller element-contacting surfaces has a concave shape adapted to conform to respective convex contacting surfaces of the roller elements. The spacer device comprises end members that have projections that extend outwards from first and second roller-contacting surfaces and which are arranged to extend at least partly over the ends of two adjacent roller elements when the spacer device is in use.

Spacer device, toroidal roller bearing and method

An angular contact self-aligning toroidal roller bearing comprising an inner ring, an outer ring, and a set of rolling elements formed of rollers arranged in an intermediate configuration between the inner and outer rings. Each roller is arranged to self orient in its axial direction in relation to the inner and outer rings in a loaded zone during operation. Furthermore, a method for determining dimensional parameters of structural members of an angular contact self-aligning toroidal rolling element bearing and a method for manufacturing an angular contact self-aligning toroidal rolling element bearing are described herein.

Angular contact self-aligning toroidal rolling element bearing

A cage () for separating rollers in a toroidal roller bearing. The cage () comprises a first and second annular ring (), a plurality of elongated axial members () interposed between the first and second annular ring to thereby form a number of roller pockets (). The cage further comprises a portion () extending radially inwardly on at least one of the first and second annular ring. The portion further extends in at least a part of the circumference of the at least one first and second annular ring. The radially outer peripheral surface of the annular ring comprising the portion further comprises axial grooves () at least at the circumference having the portion, wherein each axial groove is located at the axial end face of each roller pocket in such a way that a roller can be inserted and pulled out via the axial groove into and out of each roller pocket.

Cage for a toroidal roller bearing

A cage for separating rollers in a toroidal roller bearing. The cage comprises a first and second annular ring, a plurality of elongated axial members interposed between the first and second annular ring to thereby form a number of roller pockets. The cage further presents a portion extending radially inwardly on at least one of the first and second annular ring. The portion further extends in at least a part of the circumference of the at least one first and second annular ring. The radially outer peripheral surface of the annular ring presenting the portion presents axial grooves at least at the circumference having the portion, wherein each axial groove is located at the axial end face of each roller pocket in such a way that a roller can be inserted and pulled out via the axial groove into and out of each roller pocket.

A bearing assembly is for rotatably coupling a shaft and a housing includes an inner ring with an inner surface disposable about the shaft, an outer ring disposed about the inner ring and having an outer circumferential surface, and a plurality of rolling elements disposed between the inner and outer rings. A retainer has a first end engageable with the shaft or housing and a second end engaged with the inner ring or outer ring. The retainer positions the inner or outer ring with respect to the central axis such that the ring is generally centered on the axis. The retainer is further configured to substantially prevent angular displacement of the inner or outer ring about the central axis and to bias the ring generally axially.

Growing community of inventors

Landvetter, Sweden

Arne Lars Jonas Kullin