Abstract: The valve operator assembly is provided for a valve and includes a housing, an input member rotatably mounted, and a transmission mechanism including a translating element and a rotating element connected to the input member, said transmission mechanism being adapted to convert applied rotation of the input member into axial translation of said translating element. The assembly further includes at least one locking mechanism radially interposed between the transmission mechanism and the housing, and provided with friction means in radial contact with the housing, and with at least one pre-stressing element acting on said friction means to maintain said radial contact. The pre-stressing element and the friction means cooperate together to lock the transmission mechanism with the housing in a static position of said assembly.

Abstract: The bearing provides an inner race, an outer race and a wear race that is made of synthetic material and fastened to one of the races. The wear race is overmoulded on at least one face of the race. The face includes at least one retention means that is covered with the synthetic material of the wear race and shaped to allow both the axial retention and the angular retention of the wear race relative to the race by shape complementarity with the wear race.

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: Embodiments relate to a lifting pillar having at least a first tube and at least a second tube that is axially movably arranged within the first tube. Further, the lifting pillar provides at least one sliding element arranged between the first tube and the second tube. The sliding element is in direct contact with the first tube and the second tuber and is axially movably arranged in relation to the first tube and the second tube.

Abstract: A bearing arrangement having a bearing mounted in a housing, wherein a grease lubricant is present within the housing for lubricating the bearing, a support frame at least partly made of an electrically insulating material, arranged in a space within the housing that lies axially between the bearing and a housing seal. The support frame includes at least one electrode pair having first and second electrodes arranged to enable grease lubricant to contact therewith. A capacitance meter provided for measuring a capacitance between the first and second electrodes. The support frame provides a radially oriented surface and a plurality of ribs that extend in a radially inward direction, the ribs having sufficient circumferential spacing to enable grease to flow between adjacent ribs. One of the first and second electrodes is provided on the radially oriented surface of the support frame or on a rib surface that faces an adjacent rib.

Abstract: A suspension stop device provides an upper contact cap, a lower support cap and at least one bearing arranged between the caps. The upper contact cap provides a centering portion for a damper pad, inside which the pad, which is external to the device, is intended to be mounted. The centering portion extends axially inside a bore in the lower support cap.

Abstract: A bearing arrangement is provided having a bearing mounted in a housing, wherein a grease lubricant is present within the housing for lubricating the bearing. The arrangement further provides a support frame made of an electrically insulating material, arranged in a space within the housing between the bearing and a housing seal. The support frame is provided with at least one electrode pair having first and second electrodes arranged such that a portion of the grease lubricant is located between the first and second electrodes. A capacitance meter is provided for measuring a capacitance between the first and second electrodes. The first and second electrodes of the at least one electrode pair are provided on a radially oriented surface of the support frame, which surface is arranged such that the grease is able to move in an axial direction over the surface.

Abstract: A measurement module for monitoring an operating condition of a roller bearing having a first bearing ring and a second bearing ring rotating with respect to each other around a rotation axis comprises an energy harvesting device operable to generate energy from a relative movement between the first and second bearing rings and at least one deformation sensor operable to provide a deformation signal indicative of a deformation of a surface region of one bearing ring of the first and the second bearing rings. The deformation sensor is powered by the energy harvesting device. An evaluation circuit is operable to determine, using the deformation signal, a strain signal indicative of a present load on the bearing. The evaluation circuit is powered by the energy harvesting device and a common housing encloses the energy harvesting device, the deformation sensor and the evaluation circuit.

Abstract: A steel alloy for a bearing is provided. The alloy having a composition including from 0.04 to 0.1 wt. % carbon, from 11.5 to 13 wt. % chromium, from 1.5 to 3.5 wt. % molybdenum, from 0.3 to 0.8 wt. % vanadium, from 0.3 to 1.75 wt. % nickel from 6 to 9 wt. % cobalt, from 0.1 to 0.4 wt. % silicon, from 0.2 to 0.8 wt. % manganese, from 0 to 2 wt. % copper, from 0 to 0.05 wt. % niobium, from 0 to 0.1 wt. % aluminum, from 0 to 250 ppm nitrogen, from 0 to 30 ppm boron, and the balance iron, together with any unavoidable impurities.

Abstract: A roller bearing having a first ring, a second ring, at least one row of rolling elements arranged between the rings, and a cage for keeping the rolling elements circumferential in relation to one another. The cage includes first axial retaining means for the first ring and second axial retaining means for the second ring.

Abstract: A bearing having an inner ring, an outer ring, and sealing means is provided. The bearing includes a complementary inflatable sealing device mounted on one of the rings and further includes a fixed annular part and a deformable annular portion coupled to the annular fixed part that can be deformed in a direction from a retracted position to a deployed position under the effect of a fluid and in the other direction towards its retracted position, at least one annular chamber for receiving the fluid, into which the orifice being formed between the fixed and deformable portions at least when the deformable annular portion is extended axially.

Abstract: A bearing having an inner race, an outer race and a wear race mounted to press against an external face of one of the races and fastened on the race is provided. The wear race provides at least one annular flange locally covering an internal face of the race opposite the external face. The bearing further provides a sealing member fastened on the other race and includes at least one sealing lip in friction contact with the annular flange of the wear race.

Abstract: A multi-branch fitting includes at least three branches, molded from a composite material and, more precisely, from a fiber-reinforced thermoplastic or thermoset matrix. The fitting is intended for assembling components which are at an angle to one another. There are at least three flat or substantially flat branches or flanges extending radially from a joining zone, and at least one face or part of a face constituting a bearing face for one or more of the components that are to be attached. The joining zone has a cross section, in the transverse direction, in the shape of a polygon with concave sides. The connection of each of the branches or flanges with another adjacent branch or flange is achieved through a portion in the shape of a curved blade which gives the joining zone one of its concave shapes.

Abstract: The present invention relates to a continuous caster roll for a continuous casting machine, having; a base portion and an overlay portion made of martensitic stainless steel. The steel of the overlay portion includes 12-14% by weight Cr (chromium), and the steel further includes 0.2-0.5% by weight Nb (niobium) which is a stronger carbide former than Cr, such that Cr will be kept in solid solution in the overlay portion. The balance being Fe (iron), other alloying elements and normally occurring impurities. In addition, a method to manufacture the continuous caster roll is disclosed, wherein the overlay portion is applied by any of weld cladding or laser cladding.

Abstract: A bearing having an inner ring, an outer ring, and at least one seal arranged between the rings. The bearing including a protective cover that delimits an annular space into which the seal extends and provides an outer annular portion and at least one inner portion disposed radially facing and at a distance from one another, and a connecting annular portion linking the outer annular portion and the inner portion; and at least one means for fixing the protective cover onto the inner ring, the fixing means passing through the outer and inner portions of the protective cover and cooperating with the inner ring.

Abstract: A roller bearing that includes an outer ring, a first inner ring, and a first sealing ring that is disposed axially adjacent of the outer ring is provided. The roller bearing also includes a first retaining ring that is attached to the outer ring. The first sealing ring is fixed between the first retaining ring and a first clamping ring.

Abstract: A mechanical system, forming 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. The support element includes an inner cavity in which the roller is at least partially arranged and which is adapted to contain an oil bath for lubricating the roller. Examples of applications for the mechanical system include a follower device, an injection pump or a valve actuator.

Abstract: A device for determining a bearing preload of a rolling-element bearing includes an exciter configured to be attachable to a component of the rolling-element bearing and to excite the component of the rolling-element bearing and cause it to vibrate when the rolling-element bearing is not rotating, at least one vibration sensor configured to be attachable to the component or to a further component of the rolling-element bearing and to record (capture) a mechanical reaction, in response to the excitation, of the component or the further component of the rolling-element bearing, and an evaluating circuit configured to receive the sensor signal and provide an evaluation signal based on the sensor signal, the evaluation signal including information about the bearing preload. An associated method and computer program are also disclosed.

Abstract: A rolling-element bearing includes a first rolling-element bearing ring configured to be mechanically connectable to a stationary component, a second rolling-element bearing ring configured to be mechanically connectable to a rotating component and at least one porous body disposed between the first rolling-element bearing ring and the second rolling-element bearing ring and configured to hold a lubricant. The at least one porous body is mechanically coupled to the second rolling-element bearing ring and configured such that during rotation of the second rolling-element bearing ring the at least one porous body substantially rotates with the second rolling-element bearing ring, and, due to this rotation, releases an amount of the lubricant. The at least one porous body is further configured to absorb at least a portion of the released amount lubricant when the second rolling-element bearing ring is stationary.

Abstract: The mechanical load on a rolling element bearing is determined from the deformation of the rolling element bearing. The local deformation caused by the rolling contact forces is used to determine an average contribution to the mechanical load in order to average out the effect on the deformation as a result of the spread in diameter of the rolling elements of the bearing. The global deformation of the rolling element bearing is determined to calculate a dynamic contribution to the mechanical load. The dynamic contribution takes into account the variations of the mechanical load on the relevant time-scales that have been omitted from the average contribution as a result of the averaging operation. The total mechanical load is the sum of the average contribution and the dynamic contribution.