2676results about "Ball bearings" patented technology

The invention discloses an elastic support integrated bearing and squeeze film damper integrated structure with outer ring radial holes. The elastic support integrated bearing and squeeze film damper integrated structure comprises an elastic support integrated outer ring, a bearing inner ring, a retainer, a rolling body, a squeeze film damper, a bearing seat and the like. The elastic support integrated outer ring adopts the integrated design of a squirrel-cage type elastic support and the bearing outer ring, the radial size is reduced, the centering precision is improved, and an oil storage groove and a radial oil hole are formed in the outer side wall of the bearing outer ring of the integrated structure; the extrusion oil film damper is located on the outer side of the elastic support integrated bearing, and an oil film is communicated with a radial oil hole in the bearing outer ring, so that bearing lubrication and the extrusion oil film damper share a lubricating oil path; radial lubricating oil lubrication of the bearing is achieved through the arrangement of the radial oil holes, and the situation that the bearing is damaged due to lack of oil lubrication under the extreme working condition is avoided; meanwhile, the oil storage grooves and the radial oil holes can effectively promote flowing of lubricating oil in an oil film, formation of a dead cavity of the squeeze oil film damper is avoided, and the vibration reduction effect of the squeeze oil film damper is enhanced.

The invention provides an enhanced heat conduction lubrication type ball bearing for an X-ray tube and a CT bulb tube. The enhanced heat conduction lubrication type ball bearing comprises a bearing sleeve, a sealing end cover, a bearing raceway, a fixing shaft, a sealing baffle and a ball. A bearing cavity for accommodating the bearing raceway is formed in the bearing sleeve, the bearing cavity is filled with liquid metal, gaps among the bearing raceway, the balls and the fixed shaft are filled with the liquid metal, and the fixed shaft is filled with a flowing heat dissipation medium; the two ends of the bearing sleeve are a closed end and an open end respectively, a sealing step is arranged at the open end, movable sealing grooves are formed in the end face of the sealing step and the end face of the sealing end cover, each movable sealing groove comprises two flow channels intersecting at an acute angle, and a sealing groove and a backflow hole communicated with the movable sealing grooves and the sealing groove are formed in the sealing end cover. The anode assembly has good lubricity, heat dissipation capacity and conductivity, the operation stability is improved, the service life is prolonged, and the heat dissipation power of the anode assembly is greatly improved.

To ensure a stable conductive path with higher conductivity.SOLUTION: A brush unit 20 abuts against an axial conductive portion 10 provided on a rotating shaft 2 to electrically connect a housing 4 and the axial conductive portion 10. The brush unit 20 includes: a holder 21; a brush 22 abutting against the axial conductive portion 10 through a first opening H21a provided in the holder 21; a spring 23; a cylindrical sleeve 24 that holds the brush 22; an electrode 25; and a wiring 26 that connects the brush 22 and the electrode 25. The electrode 25 is sandwiched between a second protruding portion 21b of the holder 21 and the sleeve 24.SELECTED DRAWING: Figure 1

A bearing seal provides a first sealing member to be secured to a shoulder on one side of a first bearing ring and a second sealing member that can be secured to a shoulder on the same side of a second bearing ring. A labyrinth seal gap is formed between the first sealing member and the second sealing member, which has at least one tooth-shaped turn. On the basis of the above bearing seal, the present invention further provides a rolling bearing that employs the bearing seal on an axial side thereof.

[Bearing device with integrated electrical insulation, in particular for an electric motor or machine] This bearing device comprises a bearing 10 provided with a first ring 12 and a second ring 14 capable of rotating relative to each other. The device comprises at least one insulating sleeve 22 mounted on the second ring 14 of the bearing and provided with a bushing 24 and an insulating lining 26 overmolded on the second ring 14 and made of electrically insulating material. The bushing comprises a first axial flange 24a and a second axial flange 24b connected by a central radial core 24c. The insulating lining 26 covers at least the second axial flange 24b, the first axial flange 24a being radially offset relative to the insulating lining 26 on the side opposite the bearing 10. Reference: Figure 3

The invention discloses a high-sealing long-service-life automobile hub bearing, and belongs to the technical field of bearings, the high-sealing long-service-life automobile hub bearing comprises an inner ring body fixedly mounted on a shaft, an outer ring body is arranged on the outer side of the inner ring body, balls are arranged between the inner ring body and the outer ring body, and the outer sides of the balls are positioned through retainers; preset holes are formed in the two sides of the inner ring body and the two sides of the outer ring body, oil storage assemblies which are driven by heat to achieve automatic oil supplementing are fixedly installed on the inner sides of the preset holes, sealing pieces are fixedly installed at the two ends of the inner ring body, and first sealing rubber bodies used for adjusting and conveying oil are fixedly bonded to the outer sides of the sealing pieces. And second sealing rubber bodies are fixedly mounted at the two ends of the outer ring body. According to the automobile hub bearing with the high sealing performance and the long service life, different sealing modes can be adopted when an automobile runs and stops, the sealing dustproof effect at the position of the bearing is effectively improved, and oil liquid can be added in a self-adaptive mode in the using process.

A rock housing for horizontal directional drilling machine includes a cylindrical housing body with walls defining a longitudinal cavity. A bearing assembly is provided as a part of the housing and is located above a bit box region of the housing. The bearing assembly is lubricated by drilling mud which flows through the drill string of the drilling machine, which mud flow is normally used for cooling the drill bit and removing cuttings. A portion of the drilling mud is diverted and passes through a gap formed between the bearing races of the bearing assembly, the gap being sized so as to create the necessary back pressure to divert the needed flow of drilling mud to the assembly.

Provided is a sealing device (10) for use together with a rolling bearing to at least partially seal at least one interior space (12) of the rolling bearing from an external environment (14). The sealing device (10) includes a first carrier member (16) having a passage (20) that fluidly connects an internal space (12) of the rolling bearing and an external environment (14). The sealing device (10) also includes a ventilation means (24) having at least one accommodating body (26) and at least one membrane (28). The accommodating body (26) includes a channel (32) and completely passes through the passage (20) of the first carrier member (16). The membrane (28) is at least partially disposed in the channel (32) of the accommodating body (26). The accommodating body (26) is injection molded, and the membrane (28) is overmolded and / or laser welded to the accommodating body (26) and fixed thereto.

The utility model relates to the technical field of traction motor bearing manufacturing, in particular to a deep groove ball bearing which comprises an outer ring, an inner ring, a plurality of rolling bodies and a retainer, the outer surface of the inner ring and the inner surface of the outer ring are respectively provided with a roller path for the rolling body to roll; the rolling body is located between the outer ring and the inner ring, and the retainer is located between the outer ring and the inner ring; the guide mode of the deep groove ball bearing is rolling body guide; the groove curvature coefficient of the outer ring is 0.520 Dw, and the groove curvature coefficient of the inner ring is 0.510 Dw. The curvature coefficient of the inner and outer ring channels is reduced by 0.005 Dw compared with a conventional bearing, and the contact area of the raceway and a rolling body is increased under the condition, so that the load borne by the unit area is reduced, the stress concentration and fatigue crack possibility is reduced, the operation temperature rise and vibration of the bearing under the high-speed working condition are reduced, and the fatigue life of the bearing is prolonged.

To provide a bearing device and a spindle device that can accurately measure a machining load and a preload on each bearing.SOLUTION: A bearing device 50 comprises a first outer ring spacer 6g arranged between an outer ring 5ga of a bearing 5a and an outer ring 5gb of a bearing 5b, a housing 3 for fixing the outer ring 5ga of the bearing 5a and the outer ring 5gb of the bearing 5b, a second outer ring spacer 7 arranged between the outer ring 5gb of the bearing 5b and the housing 3, a first strain sensor 11, and a second strain sensor 8. The first strain sensor 11 is fixed to the first outer ring spacer 6g, which is located on a path through which a preload is transmitted to the bearing 5a and the bearing 5b. The second strain sensor 8 is fixed to the second outer ring spacer 7, which is not located on the path through which the preload is transmitted to the bearing 5a and the bearing 5b.SELECTED DRAWING: Figure 2

To provide an angular contact ball bearing that ensures a certain level of strength of a holder even under high load capacity and high speed rotation to prolong its service life.SOLUTION: An angular contact ball bearing 1 comprises an inner ring 2, an outer ring 3, a plurality of balls 4, and a holder 5. The holder 5 has: a small annular part 6 located radially between a counterbore part 2b of the inner ring 2 and a shoulder part 3d of the outer ring 3; a large annular part 7 located radially between a counterbore part 3b of the outer ring 3 and a shoulder part 2d of the inner ring 2; and pillar parts 8 that connect the small annular part 6 and the large annular part 7 and are provided at multiple locations in a circumferential direction. The small annular part 6, the large annular part 7, and the pillar parts 8 form a pocket Pt that holds the plurality of balls 4. When a radial thickness of the small annular part 6 is T1, a radial thickness of the large annular part 7 is T2, and a diameter of the ball 4 is Da, the followings are satisfied: 0.170≤T1 / Da≤0.280; 0.170≤T2 / Da≤0.280; 0.90≤T1 / T2≤0.10.SELECTED DRAWING: Figure 1

The present invention relates to an insulated rolling bearing in which a molded resin (5) has: an outer peripheral insulating part (5a) that covers the outer periphery of an outer ring (1); an end surface insulating portion (5b) covering an axial end surface (6) of the outer ring (1); and an end portion inner peripheral insulating portion (5c) extending axially inward from the radially inner end of the end surface insulating portion (5b) and entering the molded recess (8), the portion of the recess side surface (13) of the molded recess (8) covered by the end portion inner peripheral insulating portion (5c) being formed as an inclined surface having an inclination that is displaced axially outward toward the radially inner side.

A bearing device includes a bearing having first and second rings, a bushing and an electrically insulating insert overmolded between and connecting the bushing and a cylindrical surface of the second ring. The bushing is formed from two parts each having a cylindrical portion and a radial collar, and the insert is overmolded onto the cylindrical portions and the collars. Also, a surface of the first cylindrical portion and a surface of the second cylindrical portion together delimit a radially inner surface of the bushing or a radially outer surface of the bushing.

The invention relates to a motor bearing and a motor, and the motor bearing comprises an inner ring body, a ball and an outer ring body, and further comprises a sealing cavity which is arranged between the inner ring body and the outer ring body and is isolated from the ball; the sealing cavity is filled with the liquid electric conductor, and the liquid electric conductor makes contact with the inner ring body and the outer ring body. The liquid electric conductor is connected with the inner ring body and the outer ring body of the bearing, the inner ring body and the outer ring body are two electrodes at the same time, when the sealing cavity is filled with the liquid electric conductor, the two electrodes are soaked in liquid and are in a short-circuit state, and when the voltage difference exists between the two electrodes of the inner ring and the outer ring, common-mode axis current passes through the liquid electric conductor and flows through the liquid electric conductor. The liquid electric conductor enables the two electrodes to be short-circuited, the voltage difference between the two electrodes approaches to zero, no current passes between the inner ring and the outer ring of the bearing and the balls, the condition that electric corrosion pits are formed through breakdown does not exist, and therefore the bearing is not corroded any more.

A first seal and a second seal seal an annular space between an outer ring and an inner ring by sandwiching a retainer. A stator including a coil is supported by the first seal and is opposed to a magnetic ring. A sensor, a wireless communication circuit, and a power supply circuit are supported by the second seal. A wire electrically connects the coil and the power supply circuit. The wire includes a part disposed in a groove extending in an axial direction of a bearing on an outer peripheral surface of the outer ring.

A bearing device includes a first ring and a second ring configured to rotate relative to one another and an insulating sleeve formed from a bushing and an electrically insulating lining. The lining is overmolded on the bushing and on the second ring and connects the bushing to the second ring. The radial internal or external surface of the bushing incudes at least one helicoidal groove and the lining incudes at least one fastening rib having a shape complementary to a shape of the at least one helicoidal groove that extends into the at least one helicoidal groove. The helicoidal groove extends circumferentially at least 360 degrees around the radial internal or external surface of the bushing or the radial internal surface of the bushing.

A bearing device includes a bearing having first and second rings configured to rotate relative to each other and a bushing and an electrically insulating insert. The second ring has first and second cylindrical surfaces. The bushing has first and second cylindrical surfaces. The electrically insulating insert is overmolded between and connects the first cylindrical surface of the bushing and the second cylindrical surface of the second ring. The first cylindrical surface of the bushing includes a first annular band of material projecting toward the second cylindrical surface of the second ring, the first annular band of material has a radial surface facing the second cylindrical surface of the second ring, the first annular band of material has an axial width less than an axial width of the bushing, and the radial surface of the first annular band of material includes at least one planar portion.

A rolling-element bearing includes first and second concentric ring assemblies mounted for relative rotation. The first ring assembly includes a first rolling ring and a first sealing ring supporting first and second seal elements each having a lip. The second ring assembly includes a second rolling ring and a second sealing ring contacted by the lips of the first and second seal elements. The first sealing ring includes a first sealing member radially spaced from the first seal element and a first leakage test channel having an inlet between the first sealing member and the first seal element and an outlet at an external surface of the first sealing ring, and / or the second sealing ring includes second and third sealing members and a second leakage test channel having an inlet between the second and third sealing members and an outlet at an external surface of the second sealing ring.

A deep groove ball bearing includes: an inner ring; an outer ring; balls interposed between the inner ring and the outer ring; and a corrugate steel plate retainer of a rolling element-guided type for retaining the balls. Each of cross sections in a circumferential direction and a radial direction which passes through the deepest portion of a pocket of the corrugate steel plate retainer is an arc-shaped curved surface. A contact point between the pocket and the ball on the cross section in the radial direction of the corrugate steel plate retainer is positioned in a retainer pocket surface. Further, a curvature radius of the retainer pocket surface in the radial direction is equal to or less than a curvature radius of the retainer pocket surface in the circumferential direction.

The invention relates to a rotor shaft (1) for a rotor (2) of an electric machine (3), in particular for use in an electrically operable drive train (4) of a motor vehicle (5), the rotor shaft comprising a circumferential toothing (6) which is formed monolithically with the rotor shaft (1) and which can be brought into meshing engagement with a corresponding toothing (7) in order to transmit a torque, and a first bearing seat (8) formed on the rotor shaft (1) and a second bearing seat (9) formed on the rotor shaft (1), wherein the toothing (6) of the rotor shaft (1) is arranged axially between the first bearing seat (8) and the second bearing seat (9), wherein a first rolling bearing (10) having an inner ring (11), connected to the rotor shaft (1) for conjoint rotation therewith, is arranged on the first bearing seat (8), and wherein a raceway (12) for rolling elements (14) guided in a cage (13), on which raceway the rolling elements (14) roll, is formed on the second bearing seat (9).

The invention discloses a sealing ring supporting structure and a sealing ring, and relates to the technical field of bearing sealing, the sealing ring supporting structure comprises a bearing, the bearing is composed of an inner ring, an outer ring and balls, the outer surface of the outer ring of the bearing is fixedly connected with a plurality of protection blocks, sealing assemblies are arranged on the two sides of the bearing, and each sealing assembly comprises two first sealing rings attached to the two sides of the bearing. A plurality of first sealing rings are arranged in each set in an annular array mode, a second sealing ring is fixedly connected between every two first sealing rings in each set, and an oil injection hole is formed in each first sealing ring. A circular ring formed by combining the first sealing ring and the second sealing ring which are made of different materials is used as the sealing ring, compared with an existing sealing ring which is prone to edge warping due to uneven thermal expansion of the materials at the high temperature, the first sealing ring made of hard rubber is used as a supporting framework, overall deformation is limited, and the sealing performance is improved. The second sealing ring made of soft rubber absorbs extrusion force of thermal expansion towards the adjacent areas through elastic deformation, and edge warping caused by stress generated by local deformation is avoided.

To provide an air oil lubricating structure of a rolling bearing capable of smoothly supplying air oil.SOLUTION: An air oil lubricating structure of a rolling bearing comprises a rolling bearing 1, and a lubricating device 2 for supplying air oil to the rolling bearing 1. The lubricating device 2 includes: an outer ring spacer 11 that is provided adjacent to an outer ring end surface 7b of the roller bearing 1 and has an air oil supply hole 14; and a nozzle spacer 12 that is fixed to the outer ring spacer 11 via a mating surface 12a, has an air oil supply hole 17 communicating with the air oil supply hole 14, and discharges the air oil from the air oil supply hole 17 to the roller bearing 1. The air oil lubricating structure of the rolling bearing comprises: a seal groove 18 that ensures a contact surface f1 between the outer ring spacer 11 and the outer ring end face 7b and is annularly provided on the mating surface 12a, located outside the air oil supply hole 14 and the air oil supply hole 17; and means 13 for securing a straight surface, etc. that secures a straight surface f2 between the boundary portion 19 and the air oil supply hole 14 with a specified area or more.SELECTED DRAWING: Figure 2

The invention discloses a multi-layer damping backing bearing structure for suppressing vibration. The multi-layer damping backing bearing structure comprises a bearing outer ring; the bearing inner ring is rotatably matched with the bearing outer ring, an inner cavity is formed between the bearing inner ring and the bearing outer ring, and the inner cavity is used for containing lubricating liquid; the roller and the retainer are arranged in the inner cavity, and the shape of a pocket in the retainer is matched with that of the roller; wherein the inner side of the bearing outer ring and the outer side of the bearing inner ring are respectively provided with a roller path, and the rollers are uniformly distributed along the axial direction of the roller paths. The multiple layers of damping rings are arranged on the two sides of the bearing inner ring, the stress dispersion part is arranged on the circumferential surface, and the stress dispersion part and the multiple layers of damping rings coincide at certain positions in the axial direction, so that a three-stage energy attenuation path of damping energy dissipation, stress dispersion and structure cooperation is formed, and efficient suppression of axial vibration is achieved; the defect that in the prior art, the vibration suppression capacity is insufficient under complex working conditions is overcome.

The invention relates to an engineering plastic mold injection high-speed angular contact ball bearing retainer and a lubricating method thereof, and relates to the technical field of high-speed angular contact bearings, the engineering plastic mold injection high-speed angular contact ball bearing retainer comprises a bearing outer ring, a bearing inner ring and a bearing supporting frame, the bearing supporting frame is connected between the bearing outer ring and the bearing inner ring, and the bearing supporting frame is in a hollow circular truncated cone shape; the bearing supporting frame comprises an outer check ring, an outer oil injection ring and an inner connecting groove, the inner connecting groove is formed between the outer check ring and the outer oil injection ring, the connecting position of the outer check ring and the inner connecting groove and the connecting position of the outer oil injection ring and the inner connecting groove are each in an arc shape bent inwards, and multiple sets of ball connecting grooves are formed in the inner connecting groove. The two ends of the ball connecting groove are connected into the outer check ring and the outer oil injection ring respectively, and a ball is connected into the ball connecting groove. Lubricating work can be rapidly completed during oil injection, rapid circulation of lubricating oil can be guaranteed during oil injection, and it can be guaranteed that the lubricating oil is not prone to being thrown out in the using process.

A crown cage for a ball bearing includes an annular main portion, pillar portions protruding in an axial direction at predetermined intervals in a circumferential direction from the main portion, and a pocket formed between the adjacent pillar portions and having a spherical concave surface capable of holding a ball. The pillar portion includes a pair of claw portions having tip end portions arranged at intervals therebetween and a connection portion connecting the pair of claw portions. An inlet portion having a width shorter than a diameter of the ball and for inserting the ball is provided between the tip end portions of the two adjacent claw portions constituting the pocket. A distance from an outer circumferential surface of the pocket to a center of the crown cage for a ball bearing is larger than a distance from an outer circumferential surface of the pillar portion to the center.

An intelligent bearing includes a bearing body and a detection component. The bearing body includes an inner ring, an outer ring, a rolling body and a cage, and the detection component includes a conductive layer and friction layers. The inner ring is rotatably fixed within the outer ring and spaced apart from the outer ring. The cage is rotatably disposed between the inner ring and the outer ring. The rolling element is rotatably disposed in the cage. The friction layers are arranged at intervals between the inner ring and the outer ring. The conductive layer is attached to a first protrusion of the cage protruding toward the friction layer, rotates with the cage between the inner ring and the outer ring, and contacts and rubs against the friction layers fixed between the inner ring and the outer ring, to form a tribovoltaic effect and generates a direct current.

Provided are: a grease composition capable of preventing grease leakage and suppressing heat generation inside a bearing even under a high-speed rotation condition; and a grease-sealed bearing in which the grease composition is enclosed. A grease composition 7 is enclosed in a rolling bearing 1 and comprises a base oil and a thickener, wherein: the base oil has a kinematic viscosity at 40°C of less than 40 mm2 / s; the maximum storage elastic modulus at a temperature of 25°C and a frequency of 1 Hz is 10000-50000 Pa; the thickener is a urea compound or barium soap; and the content of the thickener with respect to the total amount of the base oil and the thickener is 5-30% by mass.

The present invention provides a centrifugal separator (1) for separating at least one liquid phase from a liquid feed mixture. The separator is comprising a rotatable portion (10), a stationary portion (2) and a drive motor (4) arranged for rotating the rotatable portion (10) relative said stationary portion (2) around an axis of rotation (X). The rotatable portion (10) comprises a centrifuge bowl (10a) and a rotatable shaft (7) onto which said centrifuge bowl (10) is mounted. The centrifuge bowl (10a) comprises a separation space (9a), in which surface enlarging inserts (17) are arranged, an inlet (11) for supply of the liquid feed mixture, at least one liquid outlet (12, 13) for discharge of a separated liquid phase. At least one bearing (5, 6) is mounted to the rotatable portion (10) to facilitate its rotation, wherein said at least one bearing (5,6) is a grease-lubricated bearing.