1263results about "Roller bearings" patented technology

The invention relates to the technical field of bearings, and particularly discloses a high-precision cylindrical roller bearing for an industrial robot, the high-precision cylindrical roller bearing comprises a first shaft sleeve, a second shaft sleeve and a spacer bush, the first shaft sleeve and the second shaft sleeve are located on the inner side and the outer side of the spacer bush respectively, a roller is arranged on the surface of the spacer bush, and the outer surface of the roller is in rotating contact with the first shaft sleeve and the second shaft sleeve respectively; and a compensation assembly is arranged on the inner side of the spacer bush and comprises a guide groove formed in the inner side of the spacer bush, a movable frame is slidably connected to the inner side of the guide groove, and a movable plate is fixedly connected to the outer surface of the movable frame. By arranging the compensation assembly, when the lubricating wheel is abraded, the movable frame moves towards one side close to the roller under the elastic force action of the double metal plates, and the reciprocating lead screw drives the lubricating wheel to synchronously move, so that the lubricating wheel is always attached to the surface of the roller, and a good lubricating effect can be continuously achieved on the bearing; and the influence of abrasion of the lubricating wheel on the lubricating effect of the bearing is reduced.

The invention discloses a plane thrust segmented retainer and a bearing, and relates to the field of bearings, the plane thrust segmented retainer comprises at least two retainer segments, each retainer segment is provided with a plurality of windows, and the adjacent windows are separated by cross beams; first stop blocks are symmetrically arranged on the mounting surface of the window, second stop blocks are symmetrically arranged on the inner walls of the two sides of the window, the first stop blocks are used for wrapping the upper half section of the roller, and the second stop blocks are used for wrapping the lower half section of the roller. The rollers are wrapped by the first check blocks and the second check blocks which are arranged on the windows, the failure phenomenon caused by collision is avoided, and the service life of the retainer and the service life of the bearing can be prolonged.

A bearing arrangement includes a first anti-friction bearing including an inner ring and an outer ring, a second anti-friction bearing including an inner ring and an outer ring, a first spacer element seated between the inner ring of the first anti-friction bearing and the inner ring of the second anti-friction bearing and including an oil supply channel which runs in a radial direction, and a second spacer element arranged between outer ring of the first anti-friction bearing and the outer ring of the second anti-friction bearing for adjusting a bearing prestress. The second spacer element includes at least two curved pieces which are placed circumferentially in opposition to one another. The second spacer element extends in the radial direction such as to from a radial gap to the first spacer element and includes an oil supply channel which runs in the radial direction.

Provided is a tapered roller bearing (1) for which a dimensionless number X is defined by the following formula (1) based on a small-diameter-side gap S1 which is a gap between a small-diameter-side annular part (6) of a retainer (5) and a small collar part (2b) of an inner ring (2), a large-diameter-side gap S2 which is a gap between the large-diameter-side annular part (7) and a large collar part (2c) of the inner ring (2), an average roller diameter d, a roller length l, and an outer member angle α. The dimensionless number X falls within a range of 0.69<X<1.12.

A crossed roller bearing and an isolation block belong to the technical field of bearings, and are characterized in that oil storage holes are respectively formed in the centers of contact surfaces of two rollers; the four vertical surfaces are respectively provided with a guide oil groove, and the guide oil grooves extend and penetrate through the whole thickness of the corresponding vertical surfaces; and an included angle is formed between the extending direction of the guide oil groove and the central axis of the isolation block, so that a pumping effect is generated when the roller rotates, and lubricating grease is promoted to flow in the guide oil groove. The internal grease storage space of the bearing is optimized, and the internal lubrication state is greatly improved.

The utility model discloses a sealing type slewing bearing which comprises an inner ring and an outer ring which are arranged from inside to outside, a plurality of balls are arranged between the inner ring and the outer ring, the end face of the inner ring is higher than the end face of the outer ring, a sealing ring is arranged on the side face of the inner ring, and the inner ring and the outer ring are arranged in parallel. An annular protrusion is formed on the lower end face of the sealing ring, the end face of the outer ring is sunken downwards to form an annular groove, the annular protrusion is rotatably clamped in the annular groove, a gap exists between the lower end face of the sealing ring and the end face of the outer ring, and a rubber ring with a U-shaped section is detachably arranged at the end of the sealing ring. The problems that in the prior art, a rubber ring is arranged on the surface of a slewing bearing, one end of the rubber ring is clamped to the side face of an inner ring, the other end of the rubber ring is attached to the end face of an outer ring, after long-time use, the elasticity of the sealing rubber ring is reduced, the end of the rubber ring is prone to upwarp, and the sealing performance is reduced are solved.

A wheel of the present disclosure includes a barrel holder, barrel support shafts, barrels, and bearings. The barrel holder is rotationally driven. The barrel support shafts arranged on the circumference of the barrel holder at an angle to a rotation axis of the barrel holder. The barrels are barrel-shaped rotating bodies. The barrels are rotatably supported on the corresponding barrel support shafts, and outer surfaces of the barrels contact a surface on which the wheel travels as the barrel holder rotates. The bearing supports the retainer. A groove is formed at least in a region of the outer circumferential surface of the barrel support shaft extending in the axial direction and including a radially inner projected area of the retainer.

Disclosed is a spherical roller bearing comprising: at least an outer ring and an inner ring; two groups of spherical rollers; and at least one cage configured to retain the spherical rollers, the cage comprising at least one axially inner cage ring, a first axially outer cage ring and a second axially outer cage ring extending in a circumferential direction of the spherical roller bearing, the first axial outer retainer ring and the second axial outer retainer ring are respectively separated from the axial inner retainer ring and are connected to the axial inner retainer ring through a plurality of retainer rods to form a closed cavity; each pocket is configured to receive one spherical roller and has an axially inner pocket side face and an axially outer pocket side face configured to restrain the spherical roller in the axial direction, each cage bar has a curved portion extending in the axial direction in the circumferential direction, the curved portion is at least partially concave, and in the axial direction, the curved portion is at least partially concave. The distance between the vertex of the bending part and the side face of the axial inner cavity lattice is different from the distance between the vertex of the bending part and the side face of the axial outer cavity lattice.

The utility model relates to a cylindrical roller bearing with a disc-type retainer, which belongs to the technical field of bearing assembly and manufacture and comprises an inner ring, an outer ring, rollers and the disc-type retainer, the inner ring and the outer ring are coaxially arranged, and the disc-type retainer and the plurality of rollers are arranged between the inner ring and the outer ring; the outer ring is formed by combining two annular split half outer rings, a retainer limiting groove used for positioning the disc type retainer is formed in the middle of the inner diameter face of the outer ring, the retainer limiting groove is formed between the two split half outer rings, and the outer edge of the disc type retainer is assembled in the retainer limiting groove. Flanges are arranged on the two sides of the inner diameter face of the outer ring, and the rollers are axially limited through the flanges. The limitation on the retainer is reduced through the split bearing outer ring, and the split outer ring is combined with the disc type retainer, so that the assembly space of the retainer is effectively controlled, the bearing has the advantages of high bearing capacity, long service life and high reliability, the performance of the gear box is improved, and meanwhile, the loss caused by fault shutdown is avoided.

The invention provides a self-lubricating structure of a tapered roller bearing, and relates to the field of bearing lubrication.The self-lubricating structure comprises a bearing assembly, the bearing assembly is composed of an outer ring mechanism, an inner ring mechanism and a pressure piston, lubricating grease can be stored in the outer ring mechanism for standby application, and self-lubricating use of the bearing assembly can be achieved for a long time through single-time filling; the outer ring mechanism can achieve the function of automatically lubricating the bearing assembly under the cooperative use of the inner ring mechanism and the pressure piston, manual control is not needed, the bearing assembly can automatically achieve starting and stopping of the lubricating grease adding function according to the operation working condition of the bearing assembly, manual regulation and control are not needed, and the working efficiency is improved. And only a proper amount of lubricating grease is added each time, so that the phenomenon that the lubricating grease is added too much or too little each time is avoided, and the problems that an oil storage structure is not arranged in an existing tapered roller bearing, only a small amount of lubricating grease can be added each time of lubrication, and the lubrication efficiency maintaining time is short are solved.

The invention discloses an automobile hub conical bearing anti-falling sealing structure which comprises an outer ring, a plurality of conical rollers are arranged on the inner wall of the outer ring at equal intervals, an inner ring is arranged on the inner sides of the conical rollers, a clamping groove is annularly formed in the inner ring, a first limiting groove and a second limiting groove are formed in the two ends of the clamping groove, and the clamping groove is connected with a locking block in a clamped mode. The centripetal end faces of the multiple locking blocks are connected with an axle outer ring, and the first limiting groove and the second limiting groove are slidably connected with the two ends of the locking blocks. Meanwhile, dust enters due to poor lubrication, abrasion of a retainer and a rolling body is aggravated, the retainer is broken, the rollers are scattered, a single tapered roller is seriously abraded, the tapered rollers cannot revolve along an inner ring, a gap between the inner ring and an outer ring goes wrong, and the tapered rollers fall off.

The utility model discloses an automatic inflation hub bearing. The automatic inflation hub bearing comprises a hub bearing and a bell housing, the hub bearing comprises a flange outer ring, a flange inner ring and a small inner ring, a locking groove is formed in the end, inserted into the flange inner ring, of the bell housing, a locking bolt is arranged on an inner hole of the flange inner ring, the head of the locking bolt abuts against the end face of the flange outer ring, and the rod portion of the locking bolt is in threaded fit with the locking groove. A center hole is formed in the center of the rod portion of the locking bolt, and a dynamic sealing assembly is arranged between the outer wall of the bell-shaped shell and the small inner ring. The air conditioner is simple in structure, reasonable in layout, good in overall air tightness and good in using effect.

The utility model discloses a cylindrical roller bearing assembly which comprises two adjacent outer rings and inner rings arranged on the inner sides of the outer rings, a plurality of U-shaped structure embedding grooves are uniformly formed in the outer rings, a connecting assembly is arranged in each two adjacent embedding grooves, and the connecting assemblies are used for fixedly connecting the outer rings; each connecting assembly comprises a connecting plate inserted into the corresponding embedding groove, two positioning plates symmetrically and fixedly connected to the side, close to the outer ring, of the connecting plate and two screws inserted into the corresponding positioning plates in a penetrating mode, the positioning plates are in threaded connection with the interiors of the corresponding outer rings through the screws, and threaded grooves connected with the screws in a matched mode are formed in the outer rings. By means of the structure, the cylindrical roller bearings are firmly connected through a simple connecting structure, the requirements for different lengths and bearing capacity can be met more easily, only damaged or abraded single-row bearings need to be replaced during maintenance or replacement, the whole multi-row bearings do not need to be replaced, the maintenance cost is reduced, and practicability is high.

To provide a method capable of preventing an internal defect from being generated in an overlaying layer having a raceway surface on its surface.SOLUTION: A method comprises an overlaying process of forming an overlaying part 15 on a raceway surface 4a by relatively rotating and axially relatively displacing a laser light source with respect to a raceway ring 3a while irradiating the raceway surface 4a provided on an inner peripheral surface or an outer peripheral surface of the used raceway ring 3a with a laser beam 10 emitted from the laser light source, and supplying a molten material 11 to a portion irradiated with the laser beam 10 in the raceway surface 4a. In the overlaying process, an irradiation direction of the laser beam 10 to the raceway surface 4a is a direction inclined forward to a normal direction of the raceway surface 4 with respect to an axial relative displacement direction of the laser light source to the raceway ring 3a.SELECTED DRAWING: Figure 4

The invention relates to the technical field of bearing structures, and discloses a lightweight thin-wall crossed roller bearing for a high-precision industrial robot, the lightweight thin-wall crossed roller bearing comprises a mounting seat, an outer ring, an inner ring and a crossed roller set, the outer ring is fixed in the mounting seat, the inner wall of the outer ring is provided with a first V-shaped channel, the outer wall of the inner ring is provided with a second V-shaped channel, and the crossed roller set is fixed in the mounting seat; the first V-shaped channel and the second V-shaped channel are combined to form a roller path for accommodating the crossed roller group, and a sealing ring is arranged at an annular gap between the two end surfaces of the outer ring and the inner ring; the lubricating assembly comprises a valve cavity formed in the outer ring, a lubricating flow channel communicating with the valve cavity and a distributor located at an outlet of the lubricating flow channel, and a valve element is arranged in the valve cavity. By arranging the lubricating assembly, lubricating oil can be supplied to the crossed roller set in a self-adaptive mode according to the working temperature of the bearing, the surface of the crossed roller set is evenly covered with the seepage holes in the distributor in an infiltration mode, and an oil film is formed to achieve lubrication and heat dissipation.

The utility model discloses a plastic oil self-lubricating maintenance-free axle bearing which comprises an outer ring, a rolling body, an inner ring and plastic oil, the rolling body is arranged between the inner ring and the outer ring, the plastic oil is in contact with the rolling body and is used for lubricating the rolling body, the utility model provides the novel self-lubricating maintenance-free axle bearing, and the plastic oil formed by an oil-saturated polymer matrix is used as a lubricating medium of the axle bearing; the lubricating oil can stably run in high-load, high-dust, high-temperature and low-temperature environments, and a lubricating film is autonomously formed in the running process, so that the maintenance frequency is reduced, the friction loss is reduced, the wear resistance is enhanced, and even the lubricating oil is maintenance-free. And the solid plastic oil is not easy to leak, so that the risk of environmental pollution is reduced.

A linear motion guide apparatus that is easily assembled is provided. The linear motion guide apparatus includes: two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element; and a cage configured to hold the rolling element and hold a gear engaging with a meshing portion provided to at least one of the two guide rails. The cage includes: a first split body in which a rolling element holding portion that holds the rolling element and a gear holding portion that holds the gear are integrally formed; and a second split body in which a rolling element holding portion that holds the rolling element and a gear holding portion that holds the gear are integrally formed. The first split body and the second split body are joined to each other.

The invention relates to the field of bearings, in particular to a tapered roller bearing machining device and a machining process thereof. The machining device comprises a supporting ring, the cross section of the supporting ring is in an L shape, a plurality of protruding strips are annularly arranged on the supporting ring, when the bearing is machined, the supporting ring is placed in a horizontal state, an inner ring is placed on the protruding strips, the inner ring is sleeved with an isolation frame, and then the supporting ring supports the isolation frame; at the moment, a plurality of tapered rollers are placed in a plurality of through holes in the isolation frame, the tapered rollers are inserted into the tapered roller path, the outer edge of the supporting ring supports the tapered rollers, and then the outer ring is buckled on the outer sides of the tapered rollers, so that the tapered roller bearing is convenient to assemble and machine. Assembling and machining of a plurality of tapered rollers in the tapered roller bearing are facilitated, and the tapered rollers are prevented from falling off during assembling.

The invention belongs to the technical field of mechanical parts, and particularly relates to an embedded self-powered intelligent bearing which comprises a bearing outer ring, a bearing inner ring, a retainer and a plurality of rollers, the rollers are located in a raceway between the bearing inner ring and the bearing outer ring, the retainer is installed between the rollers, and the embedded self-powered intelligent bearing is characterized by further comprising a plurality of magnets, the magnet is fixed on the retainer between the rollers, a mounting cavity is formed in the roller, a plurality of turns of coils, a circuit board and a vibration sensor connected to the input end of the circuit board are arranged in the mounting cavity, the circuit board is in wireless communication connection with an external upper computer, and the coils are connected to the circuit board. Magnetic induction lines generated when the coil cuts the magnet supply power to the circuit board. The coil is arranged in the roller, the relative motion between the magnet and the coil can cut magnetic induction lines to the maximum extent, strong electromotive force is generated, and the energy conversion efficiency is improved; and meanwhile, the vibration sensor is arranged in the roller, so that the environmental interference is reduced, and the detection precision is improved.

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).

A universal joint bearing includes a trunnion, a cup, rolling elements rotatably supporting the cup relative to the trunnion, and at least one seal for sealing a space between the trunnion and the cup. The cup has a substantially cylindrical surface, which is a part of a radially outer surface of the universal joint bearing. All of the rolling elements of the universal joint bearing are arranged in a certain number of rows of rolling elements. A sum of the maximum axial lengths of all the rows of rolling element divided by the sum of the maximum axial length of the substantially cylindrical surface and the maximum axial length of a radially outer surface of the at least one seal, which is another part of the radially outer surface of the universal joint bearing, is between 0.6 and 0.75.

The invention provides a full-complement long spherical roller bearing. The full-complement long spherical roller bearing comprises an outer ring, rollers, a retainer and an inner ring, the retainer comprises cross beams and double-ring beams, the double-ring beams are supported through the cross beams, the multiple cross beams are evenly distributed on the inner end faces of the double-ring beams and close to the inner diameter side, and a pocket is formed between every two adjacent cross beams and the double-ring beams; the rollers are arranged between the outer ring and the inner ring in a rolling manner, and one roller is arranged in one pocket; the retainer is a one-time punch forming retainer; the retainer can be formed through one-time punching, machining is not needed, rollers can be conveniently and rapidly installed in the retainer, meanwhile, the retainer and a roller assembly are more compact, and loose sleeving of a bearing is avoided in the installation and disassembly process.

A transmission includes a first shaft unit connected to a drive shaft of a drive unit. The first shaft unit includes a first shaft having a first shaft raceway surface on an outer peripheral surface thereof, a first output gear provided on the first shaft, a first outer ring attached to a first support part, the first outer ring having a first outer ring raceway surface on an inner peripheral surface thereof, and a plurality of first rolling elements disposed between the first shaft raceway surface and the first outer ring raceway surface.

The invention relates to an axial-radial bearing (1) for a machine tool, comprising an outer ring (2) provided for attachment to the machine tool and an inner ring (3) mounted axially and radially thereto via a plurality of rolling elements (4), which inner ring is provided for attachment to a drivable shaft washer (5), wherein the shaft washer (5) has a toothing (6). The invention also relates to a machine tool with such an axial-radial bearing (1) designed as a rotary table bearing.

The invention discloses a slewing bearing with three rows of rollers, a detection device, a detection method and an assembly method.The slewing bearing comprises an outer upper ring, an outer lower ring and an inner ring, and multiple sets of axial long holes are formed in the inner ring; limiting components and connecting long pins are installed in the axial long holes respectively, and the limiting components and the connecting long pins in the multiple sets of axial long holes are arranged at intervals. Two groups of parallel radial holes are formed in the inner side of the inner ring, one ends of the two groups of radial holes are communicated with the axial long hole, and the other ends of the two groups of radial holes are respectively communicated with the upper retainer or the lower retainer; the limiting component comprises a positioning long bolt, and symmetrical conical sleeves are mounted on the positioning long bolt; the two groups of radial holes are arranged in parallel up and down and are respectively provided with an upper propping column and a lower propping column; the conical sleeve abuts against the upper abutting column and the lower abutting column. According to the slewing bearing with the three rows of rollers, the conical sleeves which are arranged in the circumferential direction abut against the corresponding upper abutting columns and the corresponding lower abutting columns respectively, and abut against the upper retainer or the lower retainer, so that the slewing bearing has better radial stability.

A bearing includes a first ring and a second ring capable of rotating concentrically relative to one another and a system for determining wear of the bearing in a machine. The system for determining wear includes identifying means for identifying a set of parameters of the machine acting on the load applied on the bearing, measuring means, conditioning means, determining means, first determining means, second determining means, and third determining means for determining the state of wear of the bearing according to the value of the representative parameter.

A roller bearing (20) for a transmission assembly (3) for a helicopter (1) is described, comprising a first ring (51) extending around a first axis (A); a second ring (50) extending around the first axis (A) and radially external to the first ring (51); first roller bodies (55) shaped like conical rollers forming a single crown (54) coaxial to the first axis (A) and cooperating with the first and second rings (51, 50), so as to roll on respective first roller tracks (53, 52); and a third ring (70) that can rotate around the first axis (A) and defining a first shoulder (71) axially cooperating with the first roller bodies (55); a fourth ring (65) extending around the first axis (A) and radially spaced apart from the first shoulder (71); and multiple second roller bodies (66) interposed radially to the first axis (A) between the third ring (70) and fourth ring (65), and cooperating with the third and fourth rings (70, 65), so as to roll on them.

The utility model provides a cylindrical roller bearing retainer. The cylindrical roller bearing retainer comprises an oil groove structure, an oil line structure, a retainer seat and a retainer cover, a plurality of oil groove structures are arranged on an end cover of the retainer cover; the retainer seat and the retainer cover are assembled to form a plurality of pockets; the oil groove structures are located on the two sides of the pocket end face. Two side walls in the circumferential direction of each pocket hole are cylindrical surfaces; and an oil line structure is arranged on a retainer beam of the retainer seat. The utility model provides a cylindrical roller bearing retainer and a cylindrical roller bearing thereof, which not only can meet the heavy load requirement of the bearing, but also can fully improve the running speed of the bearing.

A transmission assembly for coupling a forerunning gearbox stage to a generator of a wind turbine is provided, the transmission assembly including an intermediate speed shaft supported by an intermediate speed shaft bearing arrangement and including an intermediate speed shaft gear, a high-speed shaft supported by a high-speed shaft bearing arrangement and including a high-speed shaft gear, and a gear mesh formed by an engagement of the intermediate speed shaft gear and the high-speed shaft gear, wherein the gear mesh is configured to transfer a torque between the intermediate speed shaft and the high-speed shaft.