Abstract: A cam follower is provided having a tappet that includes a cylindrical outer surface centered on a longitudinal axis and adapted to slide in a housing surrounding the tappet, a pin extending between two opposite ends along a transverse axis perpendicular to the longitudinal axis, a roller element movable in rotation relative to the pin around the transverse axis and adapted to roll on a cam, and lubrication channels for lubricating the pin and the roller. The cam follower further provides a support element mounted in the tappet and supporting the pin, and the lubrication channels include at least one pair of consecutive channels formed through the tappet and the support element. The invention also provides an injection pump and a valve actuator for a motor vehicle, each having such a cam follower. The invention finally provides a method for manufacturing such a cam follower.

Abstract: A work package management system and method for servicing equipment assets for a plurality of clients. The work package management system and method can include one or more work packages that can be accessed by a service agent through an associated data device. The work package management system can be configured to provide work packages that are applicable to the individual service agent. The work package management system can be configured to provide work packages that are based on the location of the data device.

Abstract: A bearing arrangement for low speed rotating machinery includes a shaft and at least one double row spherical roller bearing supporting the shaft. The bearing has an inner ring providing a radially outer circumferential surface having a first and a second inner raceway and an annular portion separating the first and second inner raceway in an axial direction. An outer ring provides a radially inner circumferential surface with at least one outer raceway. Spherical rollers are located in a first and a second roller row, the first and second roller row disposed between the at least one outer raceway and the first and second respective inner raceway. A cage has a central portion located between the roller rows. The central portion provides a radially inner circumferential surface and axial protrusions to separate at least two rollers in one of the first and second rollers rows.

Abstract: A crystal self-test circuit is used to self-test either an acoustic emission crystal or a vibration crystal installed onto one of a bearing, a bearing housing, and a machine. A crystal self-test circuit includes a multiplexer IC, which toggles between a pulse injection configuration and a signal collection configuration. In the pulse injection configuration, the multiplexer IC provides signal communication between a crystal self-test input and the sensing emission crystal. In the signal collection configuration, the multiplexer IC provides signal communication between the sensing emission crystal and a signal analyzer. In operation, the multiplexer IC applies a waveform (preferably a square wave) to the sensing emission crystal over a predetermined time period. The multiplexer IC then toggles to collect the output waveform from the sensing emission crystal and forwards the output waveform to the signal analyzer. The output signal can be amplified by a signal amplifier.

Abstract: The bearing provides an inner race, an outer race, at least one row of rolling elements, and at least one cage for spacing apart the row of rolling elements. The bearing further provides at least one seal that includes means for hooking which are configured to permit the retention of the seal on the cage in at least two predetermined axial hooking positions relative to the outer and inner races.

Abstract: A double-row spherical roller bearing, comprising an outer ring including at least one spherical inner raceway on a radially inner peripheral surface, an inner ring including a first and second axial end and at least one outer raceway on a radially outer peripheral surface. Spherical roller elements are located in first and second roller rows interposed in-between the inner and outer raceways. A first flange is located at the first axial end, extending in a circumferential direction of the outer peripheral surface. The inner ring is subjected to an axial load in a first axial direction wherein the first flange approaches the first roller row. An axial extension of the first flange extends without contacting any first roller row roller elements during bearing operation, when an axial load is acting on the inner ring in the first axial direction. The bearing can be integrated into a wind turbine.

Abstract: The spacer for rolling bearing comprises an inner ring, an outer ring and at least one row of angular contact rollers disposed between raceways provided on the rings. The spacer comprises two opposite faces 17 having a concave profile adapted to the rollers, at least one of said faces comprising two contact surfaces 17a, 17b with the associated roller and a concave recess 17c extending between said contact surfaces and directed outwards towards said roller.

Abstract: A bearing arrangement includes a bearing having an inner race and an outer race and a plurality of rolling elements arranged between the inner and outer race such that the first race is rotatable relative the second race; bearing lubricant arranged within the bearing to lubricate the rolling elements. The bearing arrangement provides a first electrically conductive portion and a second electrically conductive portion, the first and second electrically conductive portion being electrically insulated and arranged such that at least a portion of the bearing lubricant is located between the first and second electrically conductive portion; and a capacitance meter having a first electrode connected to the first electrically conductive portion and a second electrode connected to the second electrically conductive portion, configured to measure a capacitance between the first ring and the second ring to determine a water content in the lubricant based on the measured capacitance.

Abstract: A seal assembly is for sealing between a shaft and a body rotatable about an axis extending through the shaft and includes an annular elastomeric sealing member disposeable within the body bore and coupleable with the shaft. The sealing member has a centerline coaxial with the shaft axis and a radially-outwardly extending, generally annular lip sealingly engageable with an inner circumferential surface of the bore or of a member disposed within the bore so as to define a seal interface. The sealing lip is configured to displace fluid within the sealing interface generally axially out of the interface when the hub rotates about the shaft. Preferably, the sealing member is coupled with an inner casing and disposed within an outer casing, the seal lip sealing against the outer casing inner surface, and a second sealing lip is coupled with the outer casing and seals against the inner casing outer surface.

Abstract: Method for detecting bearing defect severity based on bearing rotation speed and at least one data sample of sensor data obtained to measure vibrations of a bearing ring is provided. The method includes converting the data sample from time domain to frequency domain to obtain a signal frequency spectrum; determining a defect center frequency of the bearing using the rotation speed; and identifying a predetermined number of frequency peaks of the signal frequency spectrum. A total vibration energy in an overall frequency band including the predetermined number of frequency peaks is first determined; next, for each of the frequency peaks, a peak energy as a spectral energy of signal components giving rise to the frequency peaks is determined; calculating a bearing defect spectral energy using the peak energies; and finally a ratio of the bearing defect spectral energy and a total vibration energy to assess a defect severity is obtained.

Abstract: The invention relates to a bearing cage including a bearing cage main body made of a polymer material and having pockets for receiving at least one row of rolling elements of a bearing. The cage is provided with a passive resonant circuit including an antenna coil attached to the cage main body. It is proposed that the antenna coil is formed as a conductive layer directly attached to the cage material of the bearing cage main body and is designed so as to have a breaking point less than or equal to a breaking point of the cage material. Thus, a rupture in the cage main body ruptures the antenna coil, changing the resonance behavior of the passive resonant circuit.

Abstract: The invention relates to a motor vehicle clutch release bearing device including a rolling bearing that forms a member for transmitting an axial force, having a rotating ring and a non-rotating ring, between which a rolling chamber for rolling elements is defined. The rotating ring provides a first radial portion intended to come into contact with an actuating member when a sufficient axial force is applied to the non-rotating ring by a member that is able to move in translation, and a second radial portion that is intended to bear against a spring, which exerts an axial force in the opposite direction to the axial force exerted by the member that is able to move in translation, dedicated to preloading the rolling bearing in an opposite direction to the actuating member.

Abstract: A sliding bearing includes at least one bearing inner ring and at least one bearing outer ring configured to rotate relative to each other about an axis (a), where the rings each include at least one sliding surface, the sliding surfaces being configured to slide along each other, and where the contact surface formed by the mutually contacting sliding surfaces has a maximum contact diameter (DK). At least parts of the sliding surfaces in a radial section have a radius of curvature (rB), the radius of curvature (rB) has a centerpoint (M) located at an offset (b) from the axis (a), and the offset (b) is at least 5% of the radius of curvature (rB).

Abstract: A slewing bearing providing a first ring, a second ring, the rings being concentric around a central axis (X1), at least one row of rolling elements arranged between the rings in order to form an axial thrust that can transmit axial forces, at least one row of rolling elements arranged between the rings in order to form a radial thrust that can transmit radial forces, and at least one sealing assembly arranged between the first ring and the second ring. The sealing assembly provides first sealing means being arranged outside second sealing means, an annular sealed chamber being defined between the first sealing means and second sealing means.

Abstract: A bearing assembly includes a hub element or a housing element, the hub element or the housing element having at least one opening, at least one intermediate element mounted in the at least one opening, the at least one intermediate element including at least one wave-shaped or lug-shaped projection in contact with the hub element or the housing element, and a first bearing element press-fit in the at least one intermediate element and a second bearing element mounted in the at least one opening, the second bearing element being movable relative to the first bearing element.

Abstract: A rotational angle sensor for determining an angular position of a reference component with respect to an axial direction includes a magnet retaining component having a magnet. The magnet retaining component is connectable to the reference component via an interference-fit connection so as to rotate with the reference component while being axially displaceable relative to the reference component. The rotational angle sensor also includes a sensor attached to the reference component such that it can rotate with respect to the reference component, and the sensor is configured to detect a magnetic field generated by the magnet. Also included is a spring element configured to exert an axial force on the magnet retaining component so that an axial spacing between the sensor and the magnet assumes a predetermined value.

Abstract: The invention provides a ring for a bearing. The invention further provides an inner ring, an outer ring and the bearing. The ring includes a raceway ring being a hardened steel metal ring providing a raceway surface configured and constructed for guiding rolling elements of the bearing. The ring further provides printed material bonded to the steel of the raceway ring. The printed material being material printed via an additive manufacturing process. The printed material may be used to customize a shape of the ring, for example, of the inner ring or the outer ring of the bearing, thus allowing flexible customization.

Abstract: A method and system for determining core losses in a permanent magnet synchronous motor, comprising a measurement of the losses of the motor with the motor not connected to a load, and a deduction of the core losses of the motor from the losses of the motor. The motor is placed in an over-fluxing state during the measurement of the losses.

Abstract: Aspects include performing online condition monitoring. Online condition monitoring includes compiling the digital sensor data to produce compiled data and processing the compiled data via a signal analysis operation to produce digitally analyzed data. Further, online condition monitoring includes comparing the digitally analyzed data to at least one threshold to output corresponding values and utilizing the corresponding value to determine whether to issue an event notification.

Abstract: A wind turbine rotor shaft arrangement, e.g. of horizontal type, comprising a rotor shaft for supporting wind turbine blades, a non-rotating first housing structure for supporting the rotor shaft, and a first rolling bearing arranged to support, in a first axial direction, the rotor shaft in relation to the first housing structure at a first support point. The first rolling bearing is a single row self-aligning 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 a symmetrical bearing roller having a curved raceway-contacting surface arranged contacting a curved inner raceway of the inner ring and a curved outer raceway of the outer ring. A contact angle between each roller and the inner and/or outer raceway is inclined in relation to the radial direction of the rotor shaft.