Abstract: The method includes providing a generally annular sealing element, the sealing element having an inner circumferential sealing surface configured to engage with a relatively movable member, and an outer casing blank including one of: a generally axially-extending section and a generally radially-extending section extending inwardly from the axially-extending section; and a generally annular disk and a generally cylindrical tube. The method may also include determining a desired diameter for a generally annular outer casing, removing a portion of the provided one of the radially-extending section and the annular disk, such that a diameter of the outer casing blank is about equal to the desired diameter, and coupling the sealing element to the outer casing blank after removing the portion of the provided one of the radially-extending section and the disk.

Abstract: The invention relates to a generator assembly for harvesting energy in a bearing arrangement having a first ring and a second ring. The generator assembly includes a plurality of coils attached to the first ring and configured to interact with a magnet ring with alternating magnetization directions attached to the second ring. In order to provide a versatile power supply for electric and electronic external devices in machine applications, it is proposed to provide the generator assembly with a plug connector for supplying power generated by the generator assembly to external devices.

Abstract: A bearing providing a first ring and a second ring, capable of rotating concentrically relative to one another, equipped with at least one incorporated device for detecting the movement of the rings relative to one another is provided. The detection device includes at least a coder element mounted on the first ring and at least a sensor element mounted on the second ring, facing the coder element, the coder element providing at least one linear ribbon arranged on a cylindrical surface of the first ring. The first ring of the bearing is equipped with at least one retaining strip that extends over the ribbon.

Abstract: A rolling-element bearing cage includes a first side ring and a second side ring connected to the first side ring by a plurality of bridges defining a plurality of pockets configured to receive a rolling-element. The first side ring includes a joint at which the first side ring is configured to be opened to increase a diameter of the first side ring, and the first side ring and the second side ring and the plurality of bridges are made of steel and an outer diameter of the second side ring is greater than 500 mm.

Abstract: A tensioner for preloading a bearing, the bearing including a first bearing ring and a second bearing ring and being configured to transmit a preload force in a radial direction and/or in an axial direction between the first bearing ring and the second bearing ring, the tensioner including a component coupled to the first bearing ring, a support element for supporting the component relative to the second bearing ring such that a closed force flow arises from the first bearing ring via the component and the support element to the second bearing ring, and a sleeve disposed in an axially displaceable manner between the first bearing ring and the component, the sleeve being configured to change the preload force in response to an axial displacement of the sleeve with respect to the component.

Abstract: The invention concerns an electrical installation providing an apparatus, a three-phase inverter and a control device, the inverter being adapted for generating a three-phase current presenting a first frequency for operating the apparatus and an undesired frequency component presenting a second frequency. The control device is adapted for measuring a parameter of each phase of the current, the measured parameters forming a measurement vector, and for calculating a Clarke transform, providing a first vector represented in a first basis of a two-dimensional vector space, of the measurement vector. The control device is adapted for generating a representation of the first vector in a second basis of the vector space, the second basis rotating at the second frequency with respect to the first basis.

Abstract: A sealing device for a bearing unit, where the unit has a radially outer ring, two rows of rolling bodies arranged, respectively, between the radially outer ring and a pair of radially inner rings. The sealing device further provides a spacer including an annular groove and configured to be arranged between the radially inner rings of the bearing unit and a seal housed inside the groove of the spacer. The seal is “U” shaped, defines a volume internally and is configured to be mounted in the annular groove with the concavity directed towards the axis of symmetry of the bearing unit.

Abstract: This radial position sensor measures the radial position of a rotor within a stator. The sensor provides measuring means for measuring the position of the rotor along a first axis radial to a rotation axis of the rotor and along a second axis perpendicular to the first axis. The measuring means includes four magnetic poles, among which two poles are diametrically opposed along the first axis and two other poles are diametrically opposed along the second axis, the magnetic poles distributed, on the inner surface of the stator, with alternating magnetic polarities around the circumference of the stator. Alternatively, the measuring means includes eight magnetic poles distributed, on the inner surface of the stator, with alternating magnetic polarities around the circumference of the stator and are arranged so that each pole deviates by an angle of approximately 30° from the nearest axis among the first axis and the second axis.

Abstract: A partial discharge detection board includes a voltage divider configured to attenuate a voltage of a reflected signal. A buffer is connected to the voltage divider. The buffer attenuates frequencies of the reflected signal that are greater than an upper cutoff frequency. An analog-to-digital converter is connected to the buffer. The analog-to-digital converter receives portions of the reflected signal up to the upper cutoff frequency, and the analog-to-digital converter converts the reflected signal from an analog domain to a digital domain. A filter is connected to the analog-to-digital converter. The filter attenuates frequencies of the reflected signal that are less than a lower cutoff frequency. A comparator is connected to the filter. The comparator compares the voltage of the reflected signal to a reference voltage. A counter is connected to the comparator. The counter increments when the voltage of the reflected signal is greater than the reference voltage.

Abstract: A bearing arrangement is disclosed. The bearing arrangement includes a bearing with a bearing lubricant. A first electrically conductive portion and a second electrically conductive portion, which have different electronegativities, are in direct contact with the bearing lubricant. The bearing lubricant and the first and second electrically conductive portions form an electrolyte and two electrodes, respectively, of an electrochemical cell. The bearing arrangement further includes a sensor connected to the first electrically conductive portion and to the second electrically conductive portion, the sensor being configured to measure at least one of a current and a galvanic potential between the first and second electrically conductive portions and to determine a water content in the bearing lubricant based on the measurement.

Abstract: The disclosure herein relates to a partial discharge detection board comprising a high voltage resistor divider. The high voltage resistor divider can reduce a voltage peak of an impulse surge generated by a surge board. The high voltage resistor divider can also include a high side with a first resistance and a low side with a second resistance.

Abstract: A method for state monitoring a bearing that supports a planetary gear of a planetary transmission on a planet carrier, the method including measuring a structure-borne noise of the planetary transmission at a stationary position on the planetary transmission in order to generate a digital measurement signal having a sample value at at least one sample time point, determining a relative speed of the planetary gear with respect to the stationary position for the sampling time point, determining a corrected measurement signal, the corrected measurement signal including the sample value with a corrected sample time point, the corrected sample time point being shifted with respect to the sample time point based on the relative speed, forming an envelope-curve signal based on the corrected measurement signal, determining a frequency spectrum for the envelope-curve signal, and comparing the frequency spectrum with a reference spectrum in a given frequency range.

Abstract: A bearing providing at least two rings able to pivot relative to one another, at least one of the rings including at least two annular ring parts having annular radial surfaces axially opposite each other. The bearing further providing at least one annular shim disposed between the radial surfaces of the annular ring parts and including successive circumferential portions. Each circumferential portion of the shim has a plurality of nicks respectively traversed by axial elements. The nicks of each circumferential portion of the annular shim are shaped and oriented to permit the positioning between the annular ring parts and the removal of each circumferential portion by radial translation.

Abstract: A pulley device that includes a bearing, a pulley mounted on the bearing and two shields disposed axially on either side of the bearing is provided. The device further includes one retaining plug mounted into a bore of the bearing and a bore of each shield. The retaining plug is fitted at least in the bore of the bearing and cooperates by contact with the shields to retain the shields on the plug.

Abstract: A brake device for a linear actuator is provided having a torque transmission mechanism for forward transfer of driving torque and a spring friction mechanism for blocking backward transfer of load torque. The mechanism provides an input shaft and a first coupled claw connected to the input shaft that rotates synchronously therewith, a driving torque output shaft and a second coupled claw connected to the output shaft and capable rotating synchronously therewith. The first coupled claw and second coupled claw are matched and engaged together, and used to transfer driving torque in a forward direction from the input shaft to the output shaft. The spring friction mechanism provides a brake housing and a friction coil spring disposed elastically in a cylindrical inner hole of the brake housing. The friction coil spring formed with end parts at two axial ends for hooking onto the first and second coupled claws.

Abstract: A bearing arrangement having an inner race and an outer race, between which rolling elements are disposed, the rolling elements being accommodated in a bearing cage. At least one rolling element is designed as a sensor rolling element, and the bearing cage is designed as a pin cage having multiple pin elements that at least partially accommodate the rolling elements and the at least one sensor rolling element, and a sensor rolling element for a bearing arrangement of this kind are disclosed.

Abstract: The ball-and-socket joint member includes an inner ring, of a general shape of revolution around a first axis, having an outer surface provided with an inner raceway, an outer ring, of a general shape of revolution around a second axis, having an inner surface provided with an outer raceway, and at least one row of balls aligned circumferentially, extending radially between the inner raceway and the outer raceway. The outer surface of the inner ring comprises a portion with a generally truncated sphere shape, forming the inner raceway. The inner surface of the outer ring comprises, for each row of balls, a groove of complementary shape to that of the balls of this row, said groove forming the outer raceway.

Abstract: The roller bearing provides an inner ring, an outer ring, and at least one row of oblique contact rollers arranged between bearing races, of the rings. Each of the rings provides a guide face, which is in contact with end faces, of the rollers. A point of intersection of the axis of rotation of each roller of the row with each guide face, of the rings is situated at an equal distance from inner, and outer, edges of the guide face.

Abstract: A seal assembly for a component supported rotatably in relation to a further component includes a bellows, a fixed seal element, and a rotatable seal element supported in sliding contact with the fixed seal element, and the bellows is configured to generate a pressure force causing a seal effect between the fixed seal element and the rotatable seal element.

Abstract: A bearing assembly for a traction motor of a railway vehicle includes at least one rolling-element bearing having an inner ring and an outer ring. At least one row of rolling elements is disposed between the inner ring and the outer ring. A sealing assembly is disposed in at least one of the axial end portions of the rolling-element bearing. The sealing assembly includes a first sealing region disposed adjacent to the bearing rings, and a second sealing region spaced farther from the bearing rings than the first seal region. The first sealing region includes a lip seal, and the second sealing region includes a labyrinth seal. The internal volume surrounding the rolling elements located between the bearing rings is in fluid communication with the atmosphere.