Abstract: A fastener element for transmitting a load to a machine part. One of the fastener's longitudinal extension axial ends is fixed with the machine part. The load acts onto the fastener at the other longitudinal extension axial end in a load area. The fastener comprises a plurality of longitudinally extending base parts, including the load area. The base parts are connected to each other by corrugations. To reduce shear in the fastener, a height of the corrugations is substantially constant along a first extension in a fastener longitudinal direction, extending from the machine part to a transition region. The load area is arranged along a second extension in the fastener longitudinal direction adjoining the first extension. Along the second extension, the corrugations height is reduced from the transition region, becoming zero at a final section of the fastener in the axial end region remote from the machine part.

Abstract: A spherical plain bearing comprising an inner ring provided with a spherical outer surface and with lateral surfaces, an outer ring provided with a corresponding spherical inner surface mounted on the outer surface, and a sleeve mounted into a bore of the inner ring. The inner ring comprises at least three part rings which are mounted in contact in the circumferential direction one relative to another. At least one protrusion is provided on an outer surface of the sleeve and extends into a groove formed on the bore of the inner ring. The sleeve leaves the lateral surfaces free of the inner ring.

Abstract: A cage for a rolling bearing, wherein the cage is intended to ensure the circumferential spacing of a row of rolling elements. The cage comprises pockets for the rolling elements and connecting tabs. Each connecting tab connects two successive pockets. At least one recess is formed in a thickness of at least one of the tabs.

Abstract: A system comprising a plurality of components operating under essentially identical conditions, wherein each of the components is equipped with at least one sensor for measuring the same operating parameter for each of the components, and a monitoring unit configured to receive and process the signals of the sensors and to generate maintenance data based on the sensor signals. The monitoring unit is configured to calculate a parameter quantifying deviations between the measured operating parameters.

Abstract: A hub-bearing assembly for agricultural use having a rolling bearing, a housing, a closing cap and an axial retention feature. The roller bearing includes an outer ring, at least one inner ring, at least a row of rolling bodies and a sealing device. The housing includes an almost annular cylindrical shape, the housing at one end forming a radial flange, containing the rolling bearing and being in direct contact with the bearing outer ring. The closing cap is assembled on the housing at the opposite end with respect to the end, where the housing forms the flange. It is noted that the cap is cup shaped. The axial retention feature is located along an external surface of the outer ring. The retention feature is located opposed to the axial sliding of the outer ring with respect to the housing.

Abstract: In described embodiments, a seal assembly is provided for sealing a space between a shaft and a housing. The shaft is rotatable about a central axis. The seal assembly includes an outer portion connectable with the housing and an inner portion releasably attached to the outer portion. The inner portion is replaceable with a replacement inner portion. A method for removing the inner portion from the outer portion is also provided.

Abstract: A seal assembly for sealing a space between a housing and a rotary shaft includes a generally annular sealing member having a central axis and inner and outer circumferential surfaces extending about the axis, at least a portion of the inner surface providing a sealing surface engageable with the shaft outer surface so as to define a seal interface with opposing axial ends. The sealing surface is configured to direct substances entering the interface toward at least one of the axial ends. Further, an annular biasing member is disposed about the sealing member outer surface and configured to exert a radially-inwardly directed force on the sealing member so as to generate contact pressure within the seal interface. The biasing member is arranged on the sealing member such that at least a portion of the biasing member extends axially in general alignment with at least a portion of the sealing surface.

Abstract: This rolling bearing assembly (2) comprises a rolling bearing (4) with an inner ring (8), an outer ring (6) and several rolling bodies (10) between the inner and outer rings, at least one sensor (30) adapted to detect a rotation parameter of a first ring (8) with respect to a second ring (6) of the rolling bearing and a support member (40) holding the sensor (30) in position with respect to the rolling bearing (4). The support member (40) holds the sensor (30) in a position such that at least one connecting pin (34, 36, 38) of the sensor (30) extends in a volume (46) defined by the support member (40) and adapted to accommodate an electrical connector (100).

Abstract: The present invention relates to a method for performing in-process compensating a machining operation on a workpiece, wherein the compensation process includes generating a control signal representative of magnitude of a contact force exerted on a cutting tool in a normal direction in relation to a machining surface of the workpiece, determining a compensation parameter value based on the control signal, and compensating the machining operation based on the compensation parameter value. The present invention also relates to corresponding machine arrangement for performing a machining operation on a workpiece, such as a hard turning process.

Abstract: A component of a rolling-element bearing, such as a bearing inner ring having an inner ring flange, a bearing outer ring having an outer ring flange or a rolling element having an end surface, includes a solid slide layer having a lower coefficient of friction than a material to which the slide layer is attached which slide layer reduces frictional contact between the component and another component against which the slide layer slides during bearing operation.

Abstract: A process for manufacturing a hollow roller of a roller bearing including steps of: machining an outer radial cylindrical surface, with a circular cross section centered on a first axis, and machining an inner radial cylindrical surface with a circular cross section centered on a second axis. These two steps are realized on the same lathe. The hollow roller is provided with the outer radial cylindrical surface, with a diameter of at least 5 mm, and the inner radial cylindrical surface. An offset between the first axis and the second axis, measured in the hollow roller between two axial surfaces of the hollow roller, is less than 2 ?m, and an inclination angle between the first axis and the second axis is less than one minute of angle. The roller bearing comprises amongst others, at least one such hollow roller.

Abstract: A universal joint bearing for a joint cross of a universal joint includes a hollow cylindrical body having a longitudinal axis and a base in an end region of the body, at least one first needle roller set including a first plurality of rollers inside the cylindrical body and at least one second needle roller set including a second plurality of rollers inside the cylindrical body. The first needle roller set is disposed adjacent to the second needle roller set in a direction of the longitudinal axis, and at least one of the first plurality of rollers is longer than at least one of the second plurality of rollers.

Abstract: A pump assembly for pumping a fluid lubricant such as grease or oil, the pump assembly comprising: a pump mechanism configured for moving a fluid lubricant; a pneumatic cylinder configured for being powered by an air source, the pneumatic cylinder comprising: a movable member for operating the pump mechanism, wherein the pump assembly further comprises a switch for detecting a position of the movable member; a valve configured for shifting a position of the moveable member upon an activation of the valve; and a control unit operable connected to the switch and the valve. The control unit is configured for controlling the activation of the valve in response to a detection of the position of the movable member by the switch, such that a pumping effect of the pump mechanism can be controlled. The pump assembly can be integrated into a lubrication system.

Abstract: A seal assembly is for sealing a space between first and second members and includes a generally annular elastomeric seal body disposed about an outer surface of the first member and extending circumferentially about a central axis. The body includes a base portion and a sealing portion, the sealing portion having an inner end integrally formed with the base portion and an outer, free end sealingly engageable with an axial surface of the second member so as to define a generally annular seal interface. A wiper is coupled with the seal body and has an engagement portion contactable with an axial surface of the second member at a position spaced radially outwardly from the sealing portion outer end. As such, the wiper engagement portion directs substances on the second member axial surface generally away from the sealing interface when the wiper contacts the substances during rotation of the rotatable member.

Abstract: A bearing ring comprising at least one jamming bead of a seal, each bead protruding relative to a radial surface of the ring, in an orthoradial direction relative to a central axis of the ring.

Abstract: A method for identifying root cause failure in a multi-parameter self learning machine application model is presented. At least one multi-function sensor having the capability to measure at least one of a voltage and current of the machine application model is provided. The method includes measuring voltages and currents of a multi-phase load with the multi-function sensors in a passive manor and calculating at least one of a time-varying variable KW, PF, kVAr, or Z out of the measured voltages and currents. The method further provides calculating a first, second or third order derivative of the time-varying variable and classifying segments of at least one of the time-varying variables depending on a state. Then, a step of choosing at least one of the variables and learning their normal behavior is undertaken. Finally, normal behavior is compared to a pattern difference and a root-cause meaning to the pattern difference is identified.

Abstract: A method of reading sensor values from or writing programming alarm and monitoring algorithm parameters into a warning device for monitoring a bearing having a close range wireless interface is disclosed. The method of reading or writing includes providing an RFID tag having an integrated circuit with memory, a radio for modulating and demodulating a radio-frequency signal, an antenna for receiving and transmitting the radio-frequency signal, and a digital bus mounted to a PCB, the digital bus connecting a microcontroller to the RFID tag. The steps of downloading the parameters into memory, accessing the parameters with the microcontroller and adapting the parameters according to the stored parameters are carried out during a write operation. The steps of uploading the stored sensor value from memory to the radio, and transmitting the sensor value with the radio via the antenna are carried out during the reading operation.

Abstract: A centering assembly (100; 200; 400) serves to center a bearing ring (123; 423) in a circular opening (111) of a holding element (110; 210; 510; 610). The centering assembly (100; 200; 400) includes at least three centering elements (101; 201; 301; 401; 501; 601) that are each elastically deformable in the radial direction of the bearing ring. The centering elements (101; 201; 301; 401; 501; 601) are respectively disposed in recesses (114; 214; 514; 614) defined around a circumferential edge of the circular opening. The centering elements urge the bearing ring to be centered relative to the holding element.

Abstract: A mechanical system forming one of a cam follower or a rocker arm, the mechanical system comprising: a support element; a pin extending between two opposite ends along a first axis and supported by the support element; and a roller movable in rotation relative to the pin around the first axis and adapted to roll on a cam. At least one recess is formed within the pin or roller, wherein the at least one recess provides a lubricant reservoir at an interface between the pin and the roller. The mechanical system can be integrated into an injection pump or a valve actuator. The mechanical system is manufactured by forming the at least one recess within the pin or roller and assembling the parts together, wherein the recess provides a lubricant reservoir at an interface between the pin and the roller.

Abstract: A method for preparing a final grease product comprising steps of: (a) mixing a polymeric thickener, which comprises a polymer of propylene, and a lubricating base oil at a temperature above the melting point of the polymeric thickener, wherein the polymeric thickener is present in an amount of 11.5-15.5 wt %, based on the total weight of the mixture so obtained; (b) cooling the mixture as obtained in step (a); (c) subjecting the cooled mixture as obtained in step (b) to a first mechanical treatment, to obtain an intermediate grease; (d) subjecting the intermediate grease as obtained in step (c) to a second mechanical treatment, carried out at a temperature in the range of from 50-90° C., to obtain the final grease product. The method can be applied to manufacturing of a grease.