Abstract: A bearing comprises a Bragg grated optical fiber to measure one or more parameters of the bearing. The optical fiber is coupled to the bearing in such a way that at least a part of the optical fiber that comprises Bragg grating is curved. The grating which is curved is adapted to the curvature in such a way that the frequency response is well defined and not spread out. This is achieved by arranging the gratings such that even though the fiber is curved the gratings appear to be substantially parallel instead of being influenced by the curvature.

Abstract: A connecting element serves to connect a flanged ring of a hub-bearing unit to a wheel or a suspension standard of a motor vehicle. The connecting element has an overall crown-like shape and forms, in a single piece, an annular portion and a plurality of parallel, equally angularly spaced pin portions which extend protruding axially from a same side of the annular portion and each have a threaded section.

Abstract: A method including the steps of forming an inner ring of a wheel hub, by joining a spindle and an insert ring fitted onto the spindle, on a side of a first end of the spindle; axially blocking the insert ring on the spindle by plastically deforming the first end of the spindle to form an upset collar therewith, which axially protrudes from the insert ring; and after forming the upset collar, frontally obtaining on the collar, on the side opposite to the insert ring a frontal toothing by means of a single creator tool provided, towards the collar, with a toothing which is complementary to that to be obtained, by impressing onto the collar, in sequence, one or more teeth of the complementary toothing, which have ridges with a rounded profile having a curvature radius (R) varying in the direction of an axis of symmetry (A1) of the tool.

Abstract: A sensor bearing assembly rotatably couples a pulley sheave with a shaft and includes an inner member with a central bore receiving a portion of the shaft, two axially spaced inner raceway surfaces and a central portion between the raceways. An outer member is disposed about the inner member and disposeable within the sheave bore to rotatably couple the sheave with the shaft. The outer member has two axially spaced outer raceway surfaces disposed about the two inner raceway surfaces and a central portion between the outer raceways and disposed about inner member central portion to define an annular cavity. An annular detection member is disposed within the annular cavity and coupled with the outer member and a sensor is disposed within the annular detection member and connected with the inner member central portion. The sensor is configured to sense angular displacement of the detection member about the bearing axis.

Abstract: A sealing arrangement used to create a seal between a first part of a chain and a second part of the chain, wherein the second part can at least be pivoted in relation to the first part, includes a sealing ring with an annular sealing lip for sealing a lubricant area between parts which can be pivoted towards each other, and an elastic ring which is adapted to be fixed to one of the parts and which is adapted to exert pressure in the sealing ring. In addition, a supporting ring is arranged between the sealing ring and the elastic ring.

Abstract: A rolling bearing assembly having a rotatable element that rotates with respect to a non-rotatable element around a central rotation axis is provided. The assembly includes rolling systems disposed between the rotatable and non-rotatable elements, the rolling systems having at least one rolling system providing rolling elements arranged along radial axes with respect to the rotation axis. The assembly has at least one elastic ring forming a raceway track mounted on the non-rotatable element so that the rolling elements cooperate with the elastic ring, the elastic ring in contact with the rolling elements by resilient elements mounted in holes distributed around the circumference of the non-rotatable element. The assembly has at least one blocking member mounted in the non rotatable element that protrudes in a hole of the elastic ring, the blocking member blocks the elastic ring from rotating around the central rotation axis with respect to the non-rotatable element.

Abstract: A sealing device including a first annular rotating shield, a second annular shield, fixed and arranged in front of the first shield for delimiting therebetween a first annular chamber and a sealing ring provided with at least a first and a second annular lips that extend axially and radially project from a flange portion of the second shield and towards a flange portion of the first shield, inside the annular chamber. At least one of the first and second lips cooperates with the flange portion of the first shield without touching it for defining a first dynamic labyrinth seal therewith. The first shield integrally supports a third annular lip that extends projecting from the first shield towards one of the first and second lips without touching it for defining a second dynamic labyrinth seal between the first and second shield and inside the annular chamber.

Abstract: A sealing unit having a first annular rotating shield and a second annular shield is provided. The second annular shield is fixed and arranged in front of the first shield for delimiting therebetween a first annular chamber and a sealing ring provided with at least a first and a second annular lips, which extend axially and radially projecting from a flange portion of the second shield and towards a flange portion of the first shield, inside the annular chamber. The first shield integrally supports a third annular lip that extends projecting from the first shield towards one of the first and second lips without touching it for defining a second dynamic labyrinth seal between the first and second shield and inside the annular chamber.

Abstract: The invention relates to a one-way clutch mechanical system, in particular a pulley-assembly for a motor vehicle alternator. The one-way clutch mechanical system includes an inner element and an outer element, which are movable relative to one another in rotation around a central axis (X1) and delimits an annular housing between them. The system further includes a one-way clutch device positioned in the annular housing, a member for damping a relative rotational movement between the inner and outer elements and for transmitting torque to the one-way clutch device, which is also positioned in that annular housing. The damping and torque transmission member is axially offset relative to the one-way clutch device, along the central axis (X1).

Abstract: This rotative assembly comprises a first element rotating with respect to a second element around a rotation axis, at least one bearing arranged between the first and second element, and at least one sealing element arranged between the first element and the second element. The sealing element is housed in a peripheral groove provided on the first element, and comprises at least one sealing lip resting on a surface of the second element. The first element comprises an extraction groove realized on a radial surface of the first element, and which forms an empty space below an internal surface of the sealing element and creates an axial access to said empty space from an axial end surface of the first element.

Abstract: The invention relates to a one-way clutch mechanical system for a pulley-assembly of a motor vehicle alternator, having an inner element, an outer element rotatably movable relative to one another around a central axis and delimiting an annular housing between them. A one-way clutch device positioned in the annular housing and a member damping a relative rotational movement between the inner and outer elements and elements transmitting torque to the clutch device is provided. A ring rotatably secured to a first element and adjacent, along the central axis, to a damping and torque transmission member, is provided with first means for activating the member to transmit torque. A sleeve belonging to the one-way clutch device is provided with second means for activating the damping and torque transmitting member. The one-way clutch device has cams that bear against the sleeve and the second activation means has at least one raised portion.

Abstract: A mechanical system, comprising a support element, a pin extending along a first axis and comprising two opposite ends, each adapted to be fitted in the support element for radial retention of the pin relative to the first axis, and a roller element movable in rotation relative to the pin around the first axis. The mechanical system includes two ribs resting on either side of the ends for axial retention of the pin along the first axis. The mechanical system can be integrated into either an injection pump or a valve actuator.

Abstract: The rolling bearing comprises an inner ring 1, an outer ring 2, at least one row of rolling elements and at least one seal 7 provided between the outer and inner rings. The seal 7 has, in cross section, the overall shape of an H and comprises internal lips 21, 22 and external lips 23, 24 forming the two substantially parallel branches of the H. The inner and outer rings 1, 2 comprise opposite radial ribs 25, 26 located axially between the internal and external lips 21 to 24 to axially retain the seal.

Abstract: In a jacketed active magnetic bearing for a rotary machine having a rotor in contact with a process gas, there is provided a magnetic bearing comprising a bearing armature of laminated magnetic material secured to said rotor, a bearing stator protected by a first jacket of magnetic anti-corrosion material that co-operates with first housing portions to form a first leaktight housing enclosing the bearing stator, the first jacket being made of a ferritic stainless steel, and the first housing portions having insert parts that are also made of ferritic stainless steel, and that are connected by welds to a housing end-wall portion made of a magnetic anti-corrosion material, the laminated magnetic material forming the bearing armature and the detector armature also being a ferritic stainless steel.

Abstract: The invention relates to a machine part comprising a first physical component, wherein: the first physical component is configured for moving relative to a second physical component; the first physical component has a first surface with a contact area for physical contact with the second physical component; the first physical component is shaped spatially complementarity to the second physical component at the contact area, and a polyelectrolyte layer is present on the first surface at a location of the contact area. The invention further relates to a machine comprising the present machine part and the second physical component. In addition, the invention relates to the use of a polyelectrolyte layer to reduce the friction between the first physical component and the second physical component, and a rolling-elements bearing.

Abstract: The invention concerns a bearing component (Ia, Ib, 1, 7, 9) for a rolling (13, 14, 16) or sliding bearing (19), wherein the bearing component (Ia, Ib, 1, 7, 9) is one of an inner ring (Ia, 1), an outer ring (Ib, 7), a rolling element (9), a cage, or a guide ring. The bearing component (Ia, Ib, 1, 7, 9) comprises a first material (2), and a second material (3) joined to the first material (2), wherein the second material (3) and the first material (2) having been joined by a semi-solid metal process.

Abstract: A mechanical system, comprising a tappet including a body, a support element defining two bores centered on a first axis, a pin comprising two opposite ends each adapted to be fitted in one of the two bores, and a roller element positioned between the two bores along the first axis and movable in rotation relative to the pin around the first axis. The support element is distinct from the body and fixed thereto, and the support element also comprises at least one antirotation device integrally formed thereto. The mechanical system can be integrated into an injection pump and/or a valve actuator.

Abstract: A mechanical system comprising: a tappet, including a body; an insert mounted in the body; a pin extending along a first axis; and a roller element movable in rotation relative to the pin around the first axis. The insert supports the pin, while the body supports the insert, along at least one first direction parallel to a second axis which is perpendicular to the first axis. The mechanical system can be integrated into an injection pump and/or a valve actuator.

Abstract: A mechanical system, comprising a support element having an outer surface adapted to slide in a housing receiving the mechanical system, a pin extending along a first axis and comprising two opposite ends, each adapted to be fitted in the support element for radial and/or axial retention of the pin relative to the first axis, and a roller element movable in rotation relative to the pin around the first axis. The mechanical system comprises at least one outer insert positioned at the outer surface of the support element. The mechanical system can be integrated into either an injection pump or a valve actuator.

Abstract: A device for detecting a pressure change in a tire includes a first temperature sensor located outside the tire, the first temperature sensor being configured to produce a first temperature signal indicative of a first temperature, an input apparatus configured to receive the first temperature signal from the first temperatures sensor, and to receive a second temperature signal from a second temperature sensor, the second temperature signal being indicative of a second temperature, and to receive a tire pressure signal from a tire pressure sensor, the tire pressure signal being indicative of a tire pressure of the tire, and a processor configured to output an evaluation signal including information about a change of tire pressure based on the pressure signal and based on the first temperature signal and the second temperature signal.