Abstract: The invention concerns a valve actuator (1) comprising a housing (2) and a nut and screw arrangement. A first portion (5) of the nut and screw arrangement is operated by an electric motor (7), which is fixed to the housing (2). A means (8) is in contact with a second portion (6) of the nut and screw arrangement, and a resilient means (9) is acting between the means (8) and the housing (2). A relative rotation between the threaded nut (3) and the threaded screw (4) leads to a translation of the means (8) and an energizing or de-energizing of the resilient means (9). A locking means (10) locks the resilient means (9) in an energized state by locking the relative rotation of the nut and screw arrangement. When the locking means (10) are released, the resilient means (9), when de-energizing, acts on the means (8), leading to a translation of the means (8).

Abstract: A fluid supplying device comprises a reservoir configured to store a fluid and a conveying element disposed in or in fluid communication with a lower portion of the reservoir. The conveying element includes a rotatable shaft and a device configured to convey or move a fluid, e.g., a lubricant. A radial-piston pump having at least one radial-piston unit is in fluid communication with a fluid output of the conveying element. The pump comprises a shaft part rotatably coupled with the shaft of the conveying element. A motor drives both the conveying element and the pump. The motor, the conveying element shaft and the pump are sequentially arranged one after another in the axial direction of the shaft.

Abstract: An elastomer-containing rod end isolator. The isolator includes a handle for connection to a load and inner and outer members. The outer member is a pocket and the inner member is spherical or nearly so. The pocket and the inner member are concentric and the inner member has two continuous exterior legs extending in a circular path. An elastomer fills most of the space between members.

Abstract: The invention concerns a vehicle thrust bearing comprising a rolling bearing forming a stop element (8), a support spring retainer (11), and an elastic support block (2), the rolling bearing including an upper race (12) arranged in an annular upper cap (16) forming a contact surface between said upper race (12) and the elastic block (2), a lower race (13). The device comprises an annular lower cap (17) forming a contact surface between the lower race (13) and the support spring retainer (11). The caps (16, 17) comprise each a thick portion (18, 22) and a thin portion (19, 23), the thin portion (19, 23) being located axially opposite the thick portion (22, 18) of the other cap, the lower (13) and upper (12) races being urged to be pressed on the thick portions (22, 18) of the lower (17) and upper (16) caps forming a rolling bearing with oblique contact.

Abstract: A combination of a bearing component and a sensor, wherein: (a) at least a portion of the bearing component is formed from a bearing steel; (b) the sensor comprises a sensor element and a support therefor; (c) at least a portion of the support is formed from a low carbon steel comprising no more than 0.2 wt. % carbon or from nickel or an alloy thereof or from titanium or an alloy thereof; and (d) the bearing component and the support are welded or brazed to one another via said respective portions.

Abstract: A labyrinth seal includes a first disc and a second disc spaced axially from the first disc such that an axial intermediate chamber is formed between the first and the second discs. A first ring connected with the first disc so as to extend generally toward the second disc and into the axial chamber and second and third rings are each connected with the second disc so as to extend generally toward the first disc and into the axial chamber. The third ring is spaced radially outwardly from the second ring and the first ring being at least partially disposed radially between the second and third rings so as to form a sealing labyrinth. Preferably, each of the rings is cut from a common strip of material, bended to form a ring and welded to the associated disc.

Abstract: A housing for a constant-velocity universal joint includes a cup having a cylindrical outer surface, a shank integral with the cup, and a rotation axis extending through the cup and the shank, the cup and the shank being spaced apart along the axis. A shoulder is interposed between the cup and the shank and a recess extends into the cup outer surface and is disposed adjacent to the shoulder.

Abstract: A two-row tapered roller bearing includes an outer ring (1) having an outer diameter of at least one meter, a first inner ring (2) and a second inner ring (3) that is disposed axially adjacent the first inner ring (2). A first set of conically-formed roller bodies (4) roll between the outer ring (1) and the first inner ring (2) and a second set of conically-formed roller bodies (5) are disposed axially adjacent the first roller bodies (4) and roll between the outer ring (1) and the second inner ring (3). A first sealing ring (11) is disposed axially adjacent the outer ring (1), is connected with the outer ring (1) and slips on a slip surface (16) of the first inner ring (2) in a contacting manner.

Abstract: A rigid torque-transmitting coupling includes two members and a coating on one member or on carrier disposed between the members. The carrier has opposing contact faces disposed against a separate member connection face. The coating includes a fixing layer disposed on the connection member face or one carrier face, and a plurality of particles are disposed within the fixing layer to secure the particles on the member or carrier. Each particle has a hardness of at least 9 on the Mohs scale and at least twenty-five percent of the particles within any area of the coating extend outwardly from the fixing layer outer surface. Further, each member contacts either the other member or the coating carrier with a pressure of about 90 MPa and 180 MPa. The surface(s) carrying the coating are formed of a harder material than the member faces engaged by the coating.

Abstract: A bearing includes an inner bearing ring on which a raceway is formed. The ring includes at least a first component of light metal material and at least a second component of fully dense ceramic material, where the first component and the second component are separate entities joined together, and where the second component forms at least part of the raceway. The first component includes two lightweight metal parts interconnected by a screw thread which can be tightened to induce compressive pre-stress in the second component to compensate for low tensile strength of the ceramic material.

Abstract: An earth bit includes a cone rotatably mounted to a shaft with a hub unit and thrust roller bearings. The hub unit is moveable between mounted and unmounted positions on the shaft, as a single unit, in a repeatable manner. The hub unit includes a pair of roller bearings positioned between inner and outer races. The outer race includes a recess extending around its outer periphery. A sealing structure is slidingly engaged with the recess to provide a seal between the cone and shaft.

Abstract: An end face seal having two thin, opposed faces of a composite PDC/tungsten carbide or like material for example of a thickness of from about 2 to 5 mm to about 10 to 15 mm, brazed or adhesively adhered by an epoxy resin to a substrate of tungsten carbide or silicon carbide/nitride formed in a ring shape. Thereafter, the PDC layer is finish lapped to a flatness of about 1 to about 10 helium lightbands, with a rough lapping to 3 or 4 helium lightbands, and a finish lapping of about 1 helium lightband.

Abstract: A threaded nut is provided for a linear drive having a rotatable spindle. The threaded nut is provided with a main nut, wherein the main nut is intended for being arranged with its internal thread on the external thread of the spindle, and is intended to perform a translatory displacing motion during a rotary motion of the spindle. The threaded nut has, furthermore, a safety nut, which is intended not to mesh by its internal thread with the external thread of the spindle during the normal operation of the linear drive and to mesh with the thread of the spindle in case of failure of the main nut. To make possible simple mounting in case of such a threaded nut means and to reduce the risk for incorrect alignment, the main nut (11) has a first part and a second part. The two parts are located at spaced locations from one another and each part being provided with a threaded section (18a, 18b) of the main nut (11), wherein the safety nut (12) is intended to be arranged between the two threaded sections (18a, 18b).

Abstract: A connection between an elastomer part and a component involves the component, at the connection site to the elastomer part, being provided with a U-shaped groove which has an undercut and which the elastomer part engages positively.

Abstract: A sealed, self-aligning bearing includes an inner bearing ring with race tracks for rolling bodies, and an outer bearing ring with a race track for the rolling bodies, positioned radially outside the inner bearing ring. At least at one side of the bearing, a bearing seal is arranged axially outside the race tracks and bridges the space between the inner and outer bearing rings. The bearing seal has an outer annular rim fitted in an annular groove in the inner surface of the outer bearing ring and an inner annular rim arranged to slidingly contact the outer surface of the inner bearing ring. The outer rim and the inner rim of the bearing seal are interconnected by an intermediate member formed as a bellows-like thin membrane able to alternatively be stretched and compressed for permitting the bearing rings of the self-aligning bearing to make displacements and/or angular misalignments.

Abstract: Connection device (100) for connecting a contact rolling bearing (1) to an external body (7), the connection device (100) presenting a peripheral connecting outline (5), which is obtained around a race (3) of the contact rolling bearing, and a complementary connecting outline (6), which is obtained inside the external body (7), and which presents a shape such as to complement the connecting peripheral outline (5) in order to render angularly integral in relation to each other the external body (7) and the first race (3), the connecting peripheral outline (5) and the complementary connecting outline (6) both presenting a radius (R) which is of variable angular dimensions with continuity on a plane which is transverse to the rotation axis (A), and are both provided, in relation to the rotation axis A, with at least one respective convex portion (51).

Abstract: A sealing assembly including a sealing member made of elastomeric material and PTFE; a supporting armature; and an annular L-shaped shield cooperating, in use, with the sealing member. The armature has a sleeve portion and a radial flange portion partly supporting a radial portion of the sealing member, projecting towards the axis of symmetry and made of elastomeric material with no supporting armature. The radial portion increases in axial size towards the axis of symmetry, and supports, on its free end, a sleeve made of PTFE, the sleeve having a cylindrical first end portion projecting axially, and a conical second end portion projecting axially on the opposite side to and by a greater amount than the first end portion to form an elastically deformable axial sealing lip extending, in undeformed conditions, farther away from the axis of symmetry as it comes away from the flange portion.

Abstract: A driving ring is fixed to the rotatable hub of a hub bearing unit for providing torque transmission from an outer bell of a constant velocity joint. The bell has an outer tubular projection in telescopic relation with the driving ring. A first end surface of the tubular projection faces a second surface of a rotatable ring of the hub bearing unit. The driving ring and the tubular projection have mutually engaging splines. The hub and the constant velocity joint are releasably axially secured by a rigid cap received in the cavity of the bell and axially abutting against a shoulder within the bell, and a screw connecting the cap member to the hub in an axially tractive relationship. This axial traction causes axial compression of the annular seal which is fitted between the first and second surfaces and provides continuous sealing around the engaged splines.

Abstract: A rotor assembly includes a rotor having a central axis extending between the two opposing ends and a radial surface, and is rotatable about the central axis. At least one electromagnet is disposed proximal to and configured to exert magnetic force on a portion of the rotor. Further, a channeling member is disposed generally adjacent to the electromagnet and has a radial surface disposed adjacent to the rotor radial surface. As such, magnetic flux generated by the electromagnet extends generally radially between the electromagnet and the rotor portion and generally axially between the rotor portion and the channeling member so that the magnetic force biases the rotor both radially and axially to maintain the rotor at a desired position. Preferably, the assembly includes a plurality of magnets proximal to each end, two channeling members, and a tubular body extending between the channeling members and enclosing the rotor.

Abstract: The invention concerns a freewheel bearing device including an outer element and inner element arranged inside the outer element, and a free wheel provided with at least a wedging element, arranged between the inner element and the outer element to allow a free rotational movement in one direction between the outer element and the inner element and for transmission of a torque in the other direction between the outer element and the inner element, the free wheel including a ring provided with a cylindrical inner surface and a cylindrical outer surface, substantially aligned on a radial plane perpendicular to the axis of rotation of the device, and a torque limiting member adapted to limit the torque transmitted by the free wheel, the torque limiting member being arranged radially between said ring and the outer element or the inner element in contact with said ring and said element.