1085results about "Rolling contact bearings" patented technology

The utility model discloses a hub bearing which comprises an outer ring and an inner ring, a flange plate is connected to the inner ring, a connecting groove is formed in the inner ring, a connecting ring is arranged on the connecting groove in a matched mode, and rolling bodies are arranged between the outer ring and the inner ring and between the outer ring and the connecting ring respectively. A first sealing piece is arranged at the end, close to the flange plate, of the outer ring, a second sealing piece is arranged at the end, away from the flange plate, of the outer ring, one end of the first sealing piece is connected to the inner wall of the outer ring, the other end of the first sealing piece extends towards the inner ring, the first sealing piece is wrapped by a first sealing lip, and a sealing step is formed on the inner ring. A gap is formed between the outer edge of the sealing step and the edge of the outer ring, a plurality of sealing grooves are formed in the side wall of the sealing step, and the first sealing lip extends into the sealing grooves to form a first blocking lip. The sealing device is simple in structure, better in sealing effect, more stable in sealing structure and capable of avoiding early failure of a sealing part.

A bearing system for a compressor including an unloader at least partially received within a recess of a driveshaft. The unloader includes an outer surface that is engaged with a bearing. An inner surface of the unloader is curved such that the unloader is pivotable relative to the driveshaft unload forces on bearing caused by deflection of the driveshaft.

A bearing assembly system for a vehicle steering system includes a tubular member having a radially inwardly protruding shoulder, the tubular member having a stake portion angling radially inwardly, the stake portion having a stake surface. The bearing assembly system also includes a bearing disposed within the tubular member and in contact with the radially inwardly protruding shoulder. The bearing assembly system further includes a retainer disposed within the tubular member and in contact with the bearing, the bearing disposed between the retainer and the radially inwardly protruding shoulder, the retainer having an angled surface, the angled surface in flush contact with the stake surface in a fully assembled condition.

The invention relates to the technical field of hub bearings, in particular to a hub bearing. The hub bearing comprises an outer ring unit, an inner ring unit, a rolling body, a first dynamic sealing unit and a second dynamic sealing unit. The outer ring unit comprises an outer ring main body and a threaded connection part; the inner ring unit comprises a first inner ring and a second inner ring; the first inner ring comprises an inner ring main body and a flange; the flange and one axial end of the inner ring main body are integrally formed; the inner ring main body and the second inner ring are positioned in the outer ring main body; the end face, facing the flange, of the outer ring body is a first collision face. The end face, facing the outer ring body, of the flange is a second collision face. A movable gap is formed between the first collision surface and the second collision surface; when the axial acceleration of the inner ring unit is 0, the movable clearance is 0.3-0.5 mm; the movable gap is gradually reduced in the direction away from the axis of the hub bearing. Therefore, the problems that the rolling body is subjected to impact loading force for a long time, so that the raceway is subjected to dent deformation, and abnormal sound is generated are solved.

The invention relates to a high-temperature-resistant reusable self-aligning roller bearing, and belongs to the technical field of bearings. A roller is arranged between an inner ring and an outer ring, and the inner ring is made of Al0. 5CrCoFeW0. 5Ni high-entropy alloy; the oxidation resistance, the strength, the stability and the wear resistance during working are met; the outer side surface of the inner ring is subjected to ion implantation modification to form a modified layer of the inner ring; the TiAlN coating reduces energy loss, and the first Ag coating is used for conducting heat and reducing oxidation loss; the outer ring is made of an Al < 0.5 > CoCrFeV < 0.5 > Ni high-entropy alloy; the high bearing capacity, the wear resistance, the fatigue resistance, the dimensional stability and the corrosion resistance in the working process are met; the modified layer on the inner side surface of the outer ring is used for improving the surface hardness and enhancing the wear resistance; the CrAlN coating is used for improving oxidation resistance, and the second Ag coating is used for conducting heat and reducing oxidation loss; the roller is made of an AlCoCrFeNi2. 1Nb0. 6 high-entropy alloy; a lubricating structure on the surface of the roller comprises an annular groove and graphite fluoride; a lubricating film is formed when the raceway and the roller rub each other, and the integrity of the lubricating film is maintained.

A rolling-element bearing includes first and second concentric ring assemblies and rolling elements supporting the ring assemblies for relative rotation. The first ring assembly includes a first rolling ring and a first sealing ring mounted axially to the first rolling ring and supporting a first seal element and a second seal element, and the second ring assembly includes a second rolling ring and a second sealing ring mounted axially to the second rolling ring. The first seal element includes a first lip in contact with the second sealing ring and the second seal element includes a second lip in contact with the second sealing ring, the first and second lips delimiting a first chamber between the first and second sealing rings, A first purging channel extends from an inlet at the first chamber to at least one outlet in at least one external surface of the second rolling ring.

The invention discloses a hinge assembly, a mechanical joint and a robot. A plurality of structural members of the hinge assembly comprise a first structural member, a second structural member and a third structural member. The plurality of bearings of the hinge assembly includes a first bearing and a second bearing. In the axial direction, the bearing seat of the second structural part is located between the bearing seat of the first structural part and the third structural part, the first bearing ring is located between the first bearing and the second bearing, and the two end faces of the first bearing ring abut against the inner ring of the first bearing and the inner ring of the second bearing correspondingly. The second bearing ring is located between the second bearing and the third structural part, and the two end faces of the second bearing ring abut against the inner ring of the second bearing and the third structural part correspondingly. The hinge assembly further comprises a fastening assembly, and the fastening assembly fastens the inner ring of the first bearing, the first bearing ring, the inner ring of the second bearing, the second bearing ring and the third structural part together in the axial direction. Therefore, linkage of the third structural part, the inner ring of the first bearing and the inner ring of the second bearing can be achieved.

The utility model discloses a split bearing for improving the axial loading capacity of a self-aligning roller bearing, and belongs to the technical field of bearings. A split bearing for improving the axial loading capacity of a self-aligning roller bearing comprises a bearing outer ring and a bearing inner ring, the bearing outer ring comprises a left half outer ring and a right half outer ring, the bearing inner ring comprises two half inner rings, the two connecting ends of the left half outer ring and the right half outer ring are connected through two first hexagon socket screws respectively, and the two connecting ends of the left half outer ring and the right half outer ring are connected through two second hexagon socket screws respectively. The butt joint surfaces of the two half-and-half inner rings are in threaded connection through two positive and negative double-end studs respectively; compared with a traditional split type bearing, the split type bearing has the advantages that the structure is simple, fastening can be completed only through screws and bolts, meanwhile, the split type bearing is more suitable for being used in a high-altitude tower seat cabin, a wind power main shaft set with limited space and other working conditions, and the split type bearing has the advantages of being easy to install and replace and low in manufacturing cost.

A device (1) for guiding and adjusting the alignment of a tape of material in transit along a production line comprising an internally hollow rotating idler roller (2) and kinematic connection means to allow said rotating idler roller (2) to perform, in addition to a first rotation (Ri) around its axis (X- X), a second rotation (R2) by a limited angle (a), around a transverse axis (Z-Z) orthogonal to a plane P passing through said central axis (Y-Y), said kinematic connection means being advantageously housed inside the cavity (7) of said rotating idler roller (2) so as to be interposed between said support element (6) and said rotating idler roller (2).

The double-wave-head large-reduction-ratio harmonic speed reducer comprises a base gear, a double-layer flexible gear, a wave generator, retainer steel balls and an output gear, the retainer steel balls are arranged between the outer edge of the wave generator and the inner wall of the double-layer flexible gear, and the double-layer flexible gear comprises a first layer of teeth and a second layer of teeth which are connected. The number of the first-layer teeth is larger than that of the second-layer teeth, the first-layer teeth are meshed with inner teeth of the base gear, the second-layer teeth are meshed with inner teeth of the output gear, and the output gear is pivoted with the base gear. Compared with a single-layer flexible gear of an RV speed reducer, the reduction ratio can reach 500-1500, the reduction ratio is larger, and the size of the speed reducer is increased little; compared with a flexible gear of a traditional harmonic speed reducer, when the double-layer gear structure works, the number of teeth is large and reaches more than 30% when the gears are meshed, the teeth are in surface contact, the bearing capacity is high, simultaneous meshing of the multiple teeth is beneficial to error averaging and mutual compensation of errors, and the positioning precision is improved to a large extent.

According to the plunger pump bearing inner and outer ring gap self-adaptive adjustment method and device, magnetic components distributed at intervals in the circumferential direction are embedded into the bearing inner ring, a magnetic flux detection unit corresponding to the magnetic components is arranged at the position, close to the periphery, of the outer ring, and the magnetic field intensity changes of the inner ring and the outer ring are monitored in real time; coil groups in one-to-one correspondence with the magnetic parts are also arranged in the outer ring and are used for generating a controllable magnetic field. The system collects magnetic flux data through the detection unit, judges deviation positions and offsets of the inner ring and the outer ring, controls the corresponding coil assembly to be connected with current according to the offsets, forms a magnetic field with the same or opposite polarity as the magnetic component, and dynamically adjusts the gap. The method can compensate eccentric wear of inner and outer rings caused by non-uniform stress of the main shaft, reduce the wear risk of the roller, improve the running stability of the bearing, prolong the service life of the pump body and optimize the performance.

The embodiment of the utility model discloses a multi-row angular contact thrust ball bearing, which comprises an inner ring, an outer ring and a rolling body arranged between the inner ring and the outer ring, the outer surface of the inner ring is provided with a plurality of rows of raceways, and the diameters of the plurality of rows of raceways are gradually reduced from left to right; the inner surface of the outer ring is provided with a plurality of rows of raceways in one-to-one correspondence with the raceways on the outer surface of the inner ring, and the diameters of the plurality of rows of raceways are also gradually reduced from left to right; and the rolling bodies are arranged in each row of raceways between the inner ring and the outer ring. According to the multi-row angular contact thrust ball bearing disclosed by the embodiment of the utility model, the axial load is greatly improved while the radial load is ensured, and the multi-row angular contact thrust ball bearing can be used in occasions with special requirements on the axial load, the radial load and the axial and radial combined load.

The invention relates to a wheel bearing arrangement, comprising a hub (10), a wheel bearing (20) arranged on the hub (10), a wheel carrier (30) to which the wheel bearing (20) is fixed by means of a wheel bearing outer ring (21), comprising a synchronous universal joint (40) which is axially clamped to the hub (10) by means of a planar tooth meshing device, and comprising a sealing ring (50) which surrounds and seals the planar tooth meshing device on the radially outer side. A sealing ring is pre-assembled on the constant velocity joint and engages with the hub outside the force flow of the wheel bearing in the assembled state of the wheel bearing arrangement, the sealing ring providing a contactless pre-seal for the wheel bearing while interacting with the wheel carrier.

The invention relates to the technical field of hub bearings, in particular to a hub bearing with a variable-curvature raceway. The invention discloses a wheel hub bearing with a variable-curvature raceway. The wheel hub bearing comprises an outer ring unit, an inner ring unit and a plurality of balls, the outer ring unit comprises a bearing outer ring; an outer ring inner side channel and an outer ring outer side channel are formed in the bearing outer ring; the inner ring unit comprises an inner ring flange and a matched inner ring; the inner ring flange is provided with a flange plate channel; the matching inner ring is provided with an inner ring channel; one part of the balls are positioned between the inner ring channel and the inner side channel of the outer ring, and the other part of the balls are positioned between the flange plate channel and the outer side channel of the outer ring; wherein the axis of the bearing outer ring is located in the reference section; in the reference cross section, the outer ring inner side channel is provided with a first cross section line; the first section line comprises a first curve and a second curve; the curvature radius of the first curve is greater than that of the second curve; therefore, the problem of how to consider the friction torque and the axial bearing capacity to prolong the service life of the hub bearing is solved.

The present invention addresses the problem of reducing stress concentration in a hub ring while ensuring the sealing properties of a sealing device in a wheel bearing device. The present invention is configured to satisfy at least one of the following relationships: 0.04 ≤ (r − h) / PCDh ≤ 0.80 where r is a radius of curvature of a stepped section (3i), h is an axial-direction length at a first boundary P1 of a boundary portion between a radial-direction inner end of the stepped section (3i) and a radial-direction outer end of a seal land section (3g) and at a second boundary P2 of a boundary portion between a radial-direction outer end of the stepped section (3i) and a radial-direction inner end of a flange side surface of an axle attachment flange (3b), and PCDh is a pitch circle diameter of a hub bolt (3f); and 0.04 ≤ (d1 − d2) / (2 × PCDh × tanθ) ≤ 0.80 where d1 is a diameter of the first boundary P1, d2 is a diameter of the second boundary P2, PCDh is a pitch circle diameter of the hub bolt (3f), and θ is an angle of a tangent with respect to the radial direction at the first boundary of the stepped section (3i).

An iron-based corrosion resistant and wear resistant alloy. The alloy can comprise (in weight percent) about 0.005-0.5% boron, about 1.2-1.8% carbon, about 0.7-1.5% vanadium, about 7-11% chromium, about 1-3.5% niobium, about 6-11% molybdenum, about 3-10% nickel and the balance including iron and incidental impurities. Alternatively, the Nb content can be replaced or combined with Ti, Zr, Hf and / or Ta such that 1%<(Ti+Zr+Nb+Hf+Ta)≦3.5. The alloy has improved hot hardness and high temperature compressive strength and is suitable for use in elevated temperature applications such as in diesel valve seat inserts.

The present invention provides a grease composition and an axle bearing in which the grease composition is sealed.SOLUTION: The grease composition of the present invention contains a base oil, a thickener, and an additive, the additive contains an organic metal salt of a divalent metal and an inorganic metal salt of a divalent metal, the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 1.00% by mass or more based on the grease composition, and the metal content of the organic metal salt with respect to the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 0.20 or more on a mass basis.SELECTED DRAWING: None

Variable pitch propeller, comprising at least two blades and a rotor with a hub, the hub comprising a blade support for each blade of the propeller, each blade comprising a blade foot designed to cooperate with one of said blade supports in order to maintain the blade in position in the rotor while allowing the pitch to be changed, comprising: - a blade foot comprising a composite core (11), disposed in an outer sleeve (13) of the blade support resting on it by means of an elastomer buffer (12), - a blade support (4) having an upper bearing (2) and a lower bearing (3) in contact with the outer sleeve (13), the blade support (4) also comprising at least two half-jaws (14) cooperating with the composite core (11) in order to prevent the blade foot from moving in a radial direction relative to the blade support (4). Figure for the abridged version: Fig 8

The utility model relates to the technical field of bearing lubrication, in particular to a multi-bearing structure and a gearbox, the multi-bearing structure comprises bearings, inner check rings and a first assembly body, in order to achieve lubrication of the multiple bearings and prolong the service life of the multi-bearing structure, a lubricating oil cavity is defined by every two adjacent bearings and the corresponding inner check ring, and the first assembly body is arranged in the lubricating oil cavity. The annular oil groove is communicated with the lubricating oil cavity through a flow channel in the inner check ring, and the oil channel is communicated with the annular oil groove. Lubricating oil is introduced into the oil channels, so that the lubricating oil can enter the lubricating oil cavities through the annular oil grooves and the flow channels, and the two adjacent bearings are lubricated. The annular oil groove is formed in the first assembly body, the annular oil groove does not need to be formed in the inner check ring, then the thickness of the inner check ring in the axis direction of the first assembly body can be reduced, the gap width between the two adjacent bearings is reduced, the size of the multi-bearing structure in the axial direction of the bearings is reduced, the installation space is saved, and installation of the multi-bearing structure is facilitated.

Rotary transmission arrangement (10) comprising: a housing (1) having a bearing surface (11) which carries at least one bearing (4); a hollow shaft (2) which is / will be rotatably coupled to the housing (1) about a first axis of rotation (A1), wherein the hollow shaft (2) has at least one externally rotating stepped shaft section (21A, 21B) and at least one internally rotating stepped shaft section (22); a rod link (3) which is / will be rotatably coupled to the housing (1) about the first axis of rotation (A1), comprising at least one contact section (31) and at least one projecting part (32), wherein the at least one contact section (31) touches at least a part of the hollow shaft (2) in a radial direction and the at least one projecting part (32) abuts the at least one internally rotating stepped shaft section (22) in an axial direction; wherein the at least one bearing (4) comprising at least one circular inner support part (41A, 41B) and at least one circular outer support part (42) supports the hollow shaft (2) and the rod link (3) rotatably against the housing (1) about the first axis of rotation (A1), wherein the at least one circular inner support part (41A, 41B) abuts at least a part of the at least one outer stepped shaft section (21A) in an axial direction and the at least one circular outer support part (42) abuts the bearing surface (11) of the housing (1) in the axial direction; and a stop member (5) which is / will be fixed to the rod member (3), wherein the stop member (5) abuts the at least one circular inner support part (41B) in the axial direction.

According to the peeling expansion analysis method, whether the raceway ring is peeled or not and the shape of a peeling part are acquired, and the peeling expansion analysis is performed at least according to the acquired shape of the peeling part, the specification of the rolling bearing and the operation condition of the rolling bearing. The rolling element load acting on the rolling element when the rolling element passes through the exit portion of the peeling portion of the raceway ring is calculated in consideration of the shape of the peeling portion during degradation, the peeling expansion speed obtained in consideration of the shape of the peeling portion during degradation is calculated on the basis of the rolling element load at the exit portion of the peeling portion, and the rolling element load acting on the rolling element when the rolling element passes through the exit portion of the peeling portion during degradation is calculated on the basis of the peeling expansion speed. The relationship between the elapsed time and the shape of the peeling portion is calculated.

The invention relates to a wheel bearing (1) for a motor vehicle, comprising a bearing element (2) having a raceway (4a, 4b) accommodating several rolling elements (3), wherein the raceway (4a, 4b) deviates at least in sections from a circular line of constant diameter.

A method includes mounting an assembled wheel hub assembly on a spindle, spraying a zinc flake coating material onto first surfaces of the assembly while rotating the wheel hub assembly, the spraying occurring while shielding second surfaces of the wheel hub assembly with a shield on the spindle and shielding third surfaces of the wheel hub assembly using a shielding tape. After creating the layer of zinc flake coating material on the first surfaces, heating the layer of zinc flake coating material using at least one infrared (IR) lamp to cure the layer of zinc flake coating material, the heating occurring while rotating the wheel hub assembly.

A drive line component for a vehicle includes a half shaft including a housing having an axially outwardly facing surface, a wheel hub assembly including a wheel bearing having an axially inwardly facing surface, and a ring extending about the housing. The ring including a radially inwardly projecting flange portion arranged between the axially outwardly facing surface of the half shaft housing and the axially inwardly facing surface of the wheel bearing, a radially outwardly projecting flange portion, and a transition region extending between the radially inwardly projecting flange portion and the radially outwardly projecting flange portion. The transition region includes a first portion extending axially inwardly from the radially inwardly projecting flange portion, a second portion extending at an angle toward the radially outwardly projecting flange portion, and a third portion including a transition between the first portion and the second portion. The transition having a sharp edge.

A harmonic gear system, having: a housing; an input shaft having an aft end within the housing that defines a wave generator; a wave generator bearing; first and second nested cup-shaped flex splines that are grounded to the housing, the first and second flex splines are biased by the wave generator via the wave generator bearing; an output shaft having a forward end that is within the housing, and a radial flange at the forward end; first and second nested circular splined shafts within the housing, the first and second circular splined shafts are connected to the radial flange of the output shaft and are driven by ones of the first and second flex splines, to thereby drive the output shaft; and a bearing between the first and second circular splined shafts.

The present invention provides a method for manufacturing a sealing device that can roughen the inner surface of the slinger, which is in sliding contact with the lip piece, over a wide area, and can also ensure uniform roughening of the slinger. [Solution] The slinger 20A comprises a first cylindrical portion 22 and a disc portion 21 which are responsible for fitting into one of the two members, and has a recessed space 24 opposite to the core material portion 30A, with the first cylindrical portion 22 and the disc portion 21 forming the outer frame. In the surface treatment step, the projection material 41 is projected onto the surface of the slinger 20A on the recessed space 24 side at different projection angles.

A surgical instrument and a bearing arrangement includes a wobble plate having a main shaft. The wobble plate is rotatable about two axes and to the main axes of the main shaft. An intersection of the two axes defines a pivot center of the wobble plate and is located on the main axis. The main shaft has a spherical coupling portion. The wobble plate includes a hollow spherical outer bearing opening. A bearing arrangement includes rolling bearing balls and a ball cage movably arranged in the outer bearing opening and delimits a hollow spherical inner bearing opening. The ball cage includes window openings in which the rolling bearing balls are arranged. The coupling portion has first round grooves for the rolling bearing balls and the outer bearing opening has second round grooves for the rolling bearing balls.

A method for manufacturing a roller with an embedded sensor comprising the steps of: - providing a roller core or a roller core with at least one reference layer - providing one or more electronic sensors on a conductive film with an electrical connection - mounting the one or more electronic sensors on the roller core or the reference layer, wherein the electrical connection is routed along the roller core - coating with a roller covering made of rubber or polyurethane - grinding the roller surface - connecting the electrical connection to an evaluation electronics.