Abstract: A sealing element for sealing a shaft comprises a stiffening part, a first elastomer part connected to the stiffening part and adapted to adjoin the housing part and provide a static seal relative, and a second elastomer part of an elastomer material different from the elastomer material forming the first elastomer part. The second elastomer part is connected to the stiffening part and comprises a sealing section adapted to adjoin the shaft to seal a space. The sealing section comprises a return structure for returning a leaking fluid to a space to be sealed. The sealing section also comprises a region at one axial end portion of the sealing section which is peripherally closed in itself and extends along an inner surface of a circular cylinder portion of the sealing section that is adapted to adjoin and seal the shaft as the shaft is not turning.

Abstract: A wheel hub bearing unit including a plurality of rolling bodies disposed between annular elements. One of the annular elements is a rotating element that includes a spindle on a side facing the outboard side of the vehicle having a mounting flange adapted to receive a vehicle wheel. A frontal surface of the mounting flange is covered by a layer of UV photopolimerizable synthetic plastic material having a predetermined thickness deposited on the frontal surface of the flange in the non-polimerized state by a mixed air spraying nozzle, by rotating the wheel hub bearing unit about a symmetry axis thereof with the nozzle arranged at a radial distance from a peripherally outer edge of the flange, and has a spraying axis which forms, with the symmetry axis, an angle from 20° to 80°; the synthetic plastic material being sprayed by the nozzle at a temperature higher than the room temperature.

Abstract: A bearing arrangement for a camshaft and a camshaft are provided. The bearing arrangement includes a bearing point in a bearing support frame that receives a camshaft, a bearing rolling-element cage and a bearing outer sleeve. The rolling-element cage and the outer sleeve are configured such that the outer diameter of the outer sleeve is smaller than the inside diameter of the bearing point and the outer diameter of the rolling-element cage is smaller than the inner diameter of the outer sleeve. The rolling-element cage may be provided with retention features that axially secure the cage to the outer sleeve. The rolling-element cage and/or the outer sleeve may be provided with collars that axially constrain the bearing relative to the support frame. A camshaft including at least one such bearing arrangement is also provided.

Abstract: A rolling-element bearing includes an inner ring made of steel and having an inner-ring raceway, an outer ring having an outer ring raceway, and ceramic rolling elements which roll on the inner-ring raceway and on the outer-ring raceway. The inner ring has been subjected to a heat treatment to harden it. The heat treatment is concluded with the performance of a final heat-treatment step at a predetermined temperature. In the inner ring, compressive residual stresses are formed in an outer layer by cold working in the region of the inner-ring raceway. The inner ring also has been subjected to a bluing treatment.

Abstract: A suspension thrust bearing including at least one rolling bearing forming an axial thrust bearing disposed on a lower cap is provided. The lower cap includes a body with an annular rolling bearing portion for a spring and a tubular portion including a bore in which a shock absorber bump stop is inserted. An axial contact surface is defined on the lower portion of the bore of the tubular portion against which the shock absorber bump stop when deformed exerts a radial force. The tubular portion includes a reinforcing insert located at the level of this axial contact surface.

Abstract: A bearing comprising a plurality of rolling elements arranged between an inner and outer raceway thereof. A rolling contact interface is between a first rolling contact surface on at least one rolling element and a second rolling contact surface formed by one of the inner and outer raceways. The first rolling contact surface has a first RMS roughness Rq1 and a first roughness pattern ?1, expressed in terms of the Peklenik number ?. The second rolling contact surface has a second RMS roughness Rq2 and a second roughness pattern ?2. To minimise micropitting in the bearing, the rolling contact interface has a surface topography wherein (a) the roughness pattern of the first and second rolling contact surfaces are oriented in the direction of rolling, whereby ?1?3.0 and ?2?10.0; and (b) the first and of the second rolling contact surfaces have substantially equal roughness heights, whereby 0.8?Rq1/Rq2?1.25.

Abstract: A clutch release bearing device including a rolling bearing having an interior race, an exterior race, at least one row of rolling elements mounted between the races, and two seals disposed radially between the interior and exterior races and on either axial side of the rolling elements is provided. The release bearing device further includes a bearing ring that bears axially on one of the races and an actuating ring bearing axially on the other race The clutch release bearing device provides at least one additional sealing member that is positioned outside the rolling bearing and bears axially against one of the interior and exterior races and cooperates with the other one of the interior and exterior races or with the bearing ring.

Abstract: A method for processing data obtained from a condition monitoring system, the method comprising steps of: (a) obtaining dynamic Acoustic Emission signal data in the form of a time waveform from at least one sensor, (b) extracting one of a maximum value, a minimum value, or mean value of the time waveform (c) counts of crossing predetermined threshold values, and (d) one of transmitting, displaying, or storing the extracted values and the number of counts instead of the dynamic signal time waveform data.

Abstract: A rolling-element bearing having a diameter greater than 50 cm includes an inner ring, an outer ring, a plurality of rolling elements between the inner ring and the outer ring, and a seal ring. The seal ring is disposed on a surface of the inner ring or on a surface of the outer ring, and the outer ring or the inner ring includes a recess having at least one interior surface, and the seal ring extends into the recess. Either the seal ring does not contact the at least one interior wall of the recess or the seal ring includes a seal body and a seal lip and the seal body does not contact the at least one interior wall of the recess.

Abstract: The present invention relates to a sealing system comprising a seal that retains a liquid in a space between two concentrically mounted and relatively rotatable components. According to the invention, the sealing system comprises at least one magneto-elastic resonance sensor for measuring at least one parameter of interest associated with the sealed liquid, based on a detected resonant frequency of the at least one sensor.

Abstract: The cage for a rolling bearing intended to ensure the circumferential spacing of a row of balls is provided. The cage provides at least two groups of pockets for the balls each provided with means for axially retaining the cage on the associated ball. A first range of axial play is provided between the pockets of a first of the at least two groups and associated balls. A second range of axial play is provided between the pockets of a second of the at least two groups and associated balls. The values of the ranges are different from each other.

Abstract: A method and a system for establishing and executing correct automatic relubrication for a number of bearings incorporated in a grease lubrication system. The system determines initial values for the relubrication interval tf and/or lubricant volume utilizing data collected from the different bearing assemblies during operation. The data includes bearing load, bearing temperature and bearing rotational speed. A processor calculates a correct lubricant volume and a value for current lubrication interval tf by comparing an initial value with a current value. The calculated correct lubricant volume and current lubrication interval tf are supplying to an automatic lubricating apparatus, which functions in accordance with the determined values. The data collection and calculation procedures are repeated after each application of lubricant to the bearings.

Abstract: 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.

Abstract: A bearing forming a clutching-declutching bearing for a motor vehicle, the bearing defining a central axis and including an outer ring free to rotate around the central axis, an inner ring, rolling elements disposed between the outer ring and inner ring and a flange mounted on the inner ring. The flange is at least partially inserted in a recess which is provided in a radial end portion of the inner ring and which is distinct from an inner bore of the inner ring.

Abstract: A method for detecting a load distribution in a roller bearing having at least one row of rollers and a strain sensor attached to a first ring, wherein the first ring is configured to rotate relative to a second ring. The method comprises steps of: (a) detecting peak heights and peak positions in roller load induced strain signals obtained from the strain sensor, and (b) calculating a load acting on at least one angle range of the second ring using peak heights of a plurality of peak positions falling in the angle range.

Abstract: A method for detecting roller spacings in a roller bearing having at least one row of rollers wherein the rollers in the row are held by at least one cage, preferably by a plurality of roller cages. The method uses roller load induced strain signals for determining the roller spacings.

Abstract: A heavy duty vehicle hubcap preferably made from a plastic material and having a sidewall, an end wall with a transparent window insert formed therein, and further including a radial mounting flange. The hubcap also includes an access port formed in the hubcap body sidewall and a vent plug removably positioned in liquid tight relation within the access port defined in the hubcap. Preferably, the hubcap is vented to permit passage of gas and vapor therethrough without permitting liquid to pass into the sealed region.

Abstract: A bearing assembly for supporting a shaft includes a bearing outer ring assembly, a bearing inner ring assembly, a first rolling-element row configured to support the bearing outer ring assembly with respect to the bearing inner ring assembly in an axial or a radial direction, and a second rolling-element row configured to support the bearing outer ring assembly with respect to the bearing inner ring assembly in a direction that differs from the axial direction and differs from the radial direction. The bearing outer ring assembly and/or the bearing inner ring assembly is separated from the first or the second rolling-element row by a bowl-shaped component that includes at least one raceway for the first rolling-element row or for the second rolling-element row.

Abstract: 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.

Abstract: A mechanical system forms a cam follower or a rocker arm. The mechanical system comprises: a support element, a pin extending between two opposite ends along a first axis and supported by the support element, and a roller adapted to receive the pin. The roller being mounted on pin, movable in rotation relative to the pin around the first axis and adapted to roll on a cam. The support element comprises two separate parts, generally semi-cylindrical, each having a contact face, in contact with one other, and a holding feature for maintaining parts assembled together.