1757results about "Ball bearings" patented technology

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.

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

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.

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 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.

A motor and a cleaner comprising the same. The motor comprises a stator including a stator core; a rotating shaft arrangeable inside the stator; a rotor rotatable about the rotating shaft by electromagnetically interacting with the stator while the rotating shaft is arranged inside the stator; a housing to accommodate the stator and the rotor; and a bearing coupleable to the housing such that while the bearing is coupled to the housing, the bearing allows the stator and the rotor to be stably coupled to each other. While the stator and the rotor are accommodated in the housing, a center of the stator core and a center of the rotor along an extension direction of the rotating shaft is arranged at different positions from each other with respect to the extension direction of the rotating shaft.

A grounding ring (10), also called an electrical balance ring, mounted between a fixed element (11) and a rotating element (12) comprises a first frame (20), a membrane (30) and a second frame (40), the first frame and the membrane being capable of carrying an electric current. The membrane includes a wear zone (ZU) at its second end, the wear zone being thicker than the main body of the membrane.

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.

A rolling bearing includes a first ring and a second ring capable of rotating concentrically relative to one another. The bearing further includes at least two seals and a spacer ring axially arranged between the two seals and including a flange that radially outwardly projects toward the second ring, and an annular axial collar. The spacer ring has at least three dissociable segments circumferentially adjacent forming the spacer ring.

A shaft grounding member for a rolling bearing, the shaft grounding member being mounted on a rolling bearing unit including the inner ring rotating type rolling bearing in which an outer ring is fixed to a housing and in which a shaft directly connected to a motor is fitted into an inner ring, the shaft grounding member includes: a spring plate including an annular portion and an elastic portion extending continuously from an inner peripheral side end portion of the annular portion to a center of the annular portion, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion on a side facing the rolling bearing. The soft conductive member is configured to abut against an end surface of the shaft. The spring plate includes a plurality of bent portions provided at a portion of the annular portion facing a side surface of the outer ring so as to be bent in an axial direction, the plurality of bent portions being deformed to apply a pressing force to the outer ring.

The invention discloses a self-lubricating wear-resistant rolling bearing, and relates to the technical field of bearings, the self-lubricating wear-resistant rolling bearing comprises a reinforcing assembly used for enhancing the strength of a plastic sliding surface rolling bearing, the reinforcing assembly comprises an inner ring and an outer ring, and the outer surface of the outer ring is provided with a plurality of metal sheets used for enhancing the structural strength of the rolling bearing. According to the self-lubricating wear-resistant rolling bearing, in order to further enhance the strength of the rolling bearing, firstly, a metal plate and a metal sheet are added into the inner plastic sliding surface and the outer plastic sliding surface respectively, and the metal surfaces are subjected to roughening treatment in an injection molding integrated forming mode; the bonding force between the inner plastic sliding face and the outer plastic sliding face is enhanced, the mechanical stability of the honeycomb structure of the honeycomb sleeve is used for dispersing pressure, weight increase caused by the fact that the whole plastic is too thick is avoided, the supporting strength is guaranteed, meanwhile, the material consumption is reduced, and finally the rolling bearing is more stable in operation, longer in service life and higher in bearing capacity.

A method for predicting the life of a rolling bearing, which is a method for predicting the life of a rolling bearing when the rolling bearing is used under arbitrary load conditions, the method comprising: calculating, on the basis of the size of inclusions present in the vicinity of the rolling surface of the rolling bearing, a stress expansion coefficient range [Delta] KII that accompanies the passage of a rolling element under the load conditions; and predicting the inclusion starting point stripping life of the rolling bearing according to the stress expansion coefficient range delta KII.

The positional relationship between the supply port for supplying lubricant to a bearing containing a nearly cylindrical rotating member and the discharge port for discharging lubricant, as well as the rotational motion of the bearing, are considered to suppress lubrication failure on the sliding surface of the rotating member. [Solution] The rotating mechanism 1 includes a bearing 10 which comprises a substantially cylindrical rotating member 11 consisting of a first bottom surface 111 and a second bottom surface 112 that slide against the inner ring 12, and a side surface 113 that is continuous therewith and rolls on the surface 121 of the inner ring 12 and the surface 131 of the outer ring 13; a supply port 14 for supplying lubricant located near the first bottom surface 111 which is further from the axis of the bearing 10 than the second bottom surface 112; and a discharge port 17 for discharging lubricant located near the second bottom surface 112 of the rotating member 11.

The present invention provides a retainer for a rolling bearing that can stably maintain a low friction state even under severe lubrication conditions such as high-speed rotation by defining the surface roughness of the retainer using a plurality of three-dimensional surface roughness parameters, and a rolling bearing that uses the retainer. [Solution] The retainer 5 is a cylindrical resin retainer for a rolling bearing, and is formed with multiple pockets 6 that hold the rolling elements. The surfaces 6a that form the pockets 6 and at least one of the inner diameter surface 8 and outer diameter surface 9 of the retainer 5 have a value of A=(Sa / 10)+Str+(Spk / 10), which is calculated from the arithmetic mean height Sa, the aspect ratio Str of the surface texture, and the protruding peak height Spk, of 1.20 or more.

The utility model belongs to the technical field of deep groove ball bearings, and particularly relates to an outer ring separation type deep groove ball bearing which comprises a first outer ring, a connecting convex block is arranged at the end of the first outer ring, a connecting groove is formed in the end of a second outer ring, and a first sliding groove and a mounting groove are formed in the top of the second outer ring. A second sliding block is slidably connected into the second sliding groove, a limiting column is fixedly connected into the second sliding block, clamping grooves are formed in the top and the bottom of the connecting protruding block, a connecting hole is formed in the limiting ring, one end of the connecting rope is fixedly connected with the top of the limiting column, and a first sliding block is fixedly connected to the end, away from the limiting column, of the connecting rope. Through the arrangement of the clamping grooves and the limiting columns, the first outer ring and the second outer ring can be quickly disassembled; and by arranging a limiting ring and a compression spring, the connection stability of the first outer ring and the second outer ring can be enhanced.

The invention discloses a self-sensing intelligent thrust bearing based on a nano-generator and a state monitoring method of the self-sensing intelligent thrust bearing. The thrust bearing comprises a shaft ring, a seat ring, a rolling body, a retainer and a nano-generator sensing structure, wherein the rolling body and the retainer are arranged in an annular raceway between the shaft ring and the seat ring; obtaining a first voltage signal and a second voltage signal through a nano generator sensing structure; the state monitoring method comprises the following steps: acquiring a first voltage signal and a second voltage signal; respectively preprocessing the two paths of signals and then carrying out data-level fusion; dividing the fusion signal into a training set, a verification set and a test set, and training a data-level fusion 1D-CNN model; and inputting a to-be-tested signal into the trained model to realize intelligent classification of the bearing operation state. According to the invention, multi-source signal fusion sensing and real-time monitoring of the running state of the thrust bearing are realized, the structure is compact, the sensitivity is high, and the identification is accurate.

A rolling bearing, in particular a ball bearing, is in the form of two bearing rings that are mounted so as to be rotatable relative to each other about an axis. The roller bearing includes an inner ring and an outer ring which each form a guide portion of a guide. The guide portion surrounds the axis with the portion formed by the inner ring is radially opposite the portion formed by the outer ring. In the guide, rolling bodies are distributed around the axis and rest on the two guide portions. When the bearing rings rotate, the rolling bodies roll on the two guide portions. At least one of the rings has a slide ring as the guide portion and a stabilising ring on the slide ring. The slide ring and the stabilising ring are produced from first and second plastics materials, respectively. The first plastics material is softer than the second plastics material.

The present invention provides a shaft grounding member and a rolling bearing unit equipped with the shaft grounding member that suppress the generation of wear particles from conductive members or wear particles due to sliding contact between conductive members and mating materials, while also suppressing damage to the mating material, stably ensuring excellent conductivity, without forming new processing on the bearing, and without restrictions on the type of bearing, and can be used with existing bearings, and is space-saving and inexpensive. [Solution] The shaft grounding member for the rolling bearing is composed of an annular portion and an elastic portion that extends continuously from the inner circumference end of the annular portion to the center of the annular portion, and comprises a spring plate made of a thin sheet of conductive material and a soft conductive member attached to the side of the elastic portion facing the rolling bearing, the soft conductive member being able to contact the end face of the shaft. The spring plate is provided on the portion of the annular portion facing the side of the outer ring, bent in the axial direction, and has a plurality of bent portions that apply a pressing force to the outer ring by deforming themselves.

The utility model relates to the field of mechanical engineering, in particular to an oil storage micropore layer bearing with a dynamic lubricating function. The oil storage micropore layer bearing with the dynamic lubricating function can automatically and uniformly release lubricating oil when the temperature of the bearing is detected to be too high, reduces the requirement of manual intervention, and prevents abrasion and faults caused by high temperature. An oil storage micropore layer bearing with a dynamic lubricating function comprises a bearing seat, an outer ring and the like, and the inner side of the bearing seat is connected with the outer ring. The electromagnetic coil is powered on to enable the valve element to move, the telescopic spring is extruded and contracted, the valve element does not block the discharging port any more, lubricating oil is discharged to the position between the outer ring and the inner ring through the discharging port, and the lubricating oil can be automatically and evenly released when it is detected that the temperature of the bearing is too high; the requirement for manual intervention is reduced, and abrasion and faults caused by high temperature are prevented.

The bearing device comprises a bearing 10, which is provided with a first ring 12 and a second ring 14, which are rotatable relative to each other. The device comprises at least one insulating sleeve 26, which is attached to the second ring 14 of the bearing and is provided with a bushing 28 and an insulating insert 30, which is formed on at least one of the outer and inner surfaces of the second ring 14 and on at least one outer or inner surface of the bushing 28, which limit its radial thickness. The device also includes at least one elastically deformable element 32, which lies radially between the second ring 14 and the bushing 28 and is in radial contact with at least one of the surfaces of the first ring and the surface of the bushing 28 by being compressed in the radial direction.

A worm gear reducer capable of suppressing the occurrence of unpleasant abnormal noise due to metal-to-metal contact generated at locations other than an engaging portion between wheel teeth and worm teeth is provided. A worm 14 has an annular protruding portion 40 at a portion located on an inside in a radial direction of an inner ring 28, the annular protruding portion 40 having two contact end portions 41 at end portions on both sides in an axial direction of an outer circumferential surface thereof, the two contact end portions restricting further inclination of the worm 14 with respect to the inner ring 28 by coming into contact with an inner circumferential surface of the inner ring 28 when the worm 14 is inclined to a maximum inclination angle θmax, and each of the two contact end portions 41 composed of a convex curved surface.

Bearing unit (30) having a radially outer ring (31), stationary, a radially inner ring (33), rotatable with respect to an axis of rotation (X), a row of rolling bodies (32) interposed between the radially outer ring (31) and the radially inner ring (33), a sealing device (35), which is interposed between the radially inner ring (33) and the radially outer ring (31), is stably anchored, in use, in a seat (31a), and comprises, in turn, a shaped shield (40) in metallic material, and an elastomer coating (50) overmolded on the shaped shield (40) and provided with an anchorage (55), radially external and provided with: - a first anchoring lip (60), radially external and axially internal, configured in use to be stably inserted in the seat (31a) of the radially external ring (31), - a second anchoring lip (70), radially external and axially external, configured in use to improve the position in the seat (31a) of the sealing device (35) and the protection from external contamination, - a connecting surface (80, 81), radially external, between the first anchoring lip (60) and the second anchoring lip (70), configured to reduce the compression of the anchorage (55) during the assembly process.

The invention relates to a bearing arrangement with integrated electrical insulation, in particular for an electric motor or an electric machine. The bearing arrangement comprises a bearing (10) provided with a first ring (12) and a second ring (14) rotatable relative to each other. The device comprises at least one insulating sleeve (26) mounted on the second ring and provided with a seat (28) and an insulating liner (30). An insulating liner (30) is overmolded on the second ring and overmolded on at least one of the outer and inner surfaces of the seat. The seat and the second ring are respectively provided with a first end face (28c, 14c) and a second end face (28d, 14d) defining their axial length. A first end face (14c) of the second ring is offset inward in the axial direction with respect to a first end face (28c) of the seat, and a second end face (14d) of the second ring is offset inward in the axial direction with respect to a second end face (28d) of the seat.

An angular ball bearing includes an outer ring having an outer ring raceway surface, an inner ring having an inner ring raceway surface, and a plurality of balls being rollable between the outer ring raceway surface and the inner ring raceway surface at a contact angle, a bearing ring of at least one of the outer ring and the inner ring being a press-formed product of a steel plate. The bearing ring includes an extending portion extending in an axial direction from the raceway surface toward a side opposite to a side on which a line of action of the contact angle relative to a center of the ball passes through the raceway surface. The extending portion has a bent portion bent in a radial direction and the bent portion overlaps the ball when viewed from the axial direction so as to define an overlap allowance.

A solid-transfer lubrication hybrid transmission bearing and a manufacturing method therefor. The bearing comprises an outer ring, an inner ring, a cage, rolling balls and lubricating balls, wherein the cage is configured between the outer ring and the inner ring; rolling ball pockets are provided on at least one axial side of the cage, the plurality of rolling ball pockets being arranged in the circumferential direction of the cage; the outer ring, the inner ring and the rolling ball pockets form a first space for accommodating the rolling balls, and an isolation lubricating layer is provided on an inner wall of the rolling ball pocket, the hardness of the rolling ball being greater than the hardness of the isolation lubricating layer; lubricating ball pockets are provided on an outer circular surface of the cage, the plurality of lubricating ball pockets being arranged in the circumferential direction of the cage; and the outer ring and the lubricating ball pockets form a second space for accommodating the lubricating balls. The bearing has a dual-lubrication effect, achieves solid-transfer lubrication, can achieve sliding friction having a low friction coefficient, and can also achieve dynamic compensation for rolling and sliding.

The present invention provides a spindle device for a machine tool that prevents lubricating oil from adhering to the area around the bearing and prevents the bearing temperature from rising due to the re-inflow of lubricating oil. [Solution] An air supply passage 34 is provided radially through the outer ring collar 31, which has a notch 33 that forms part of the oil drain passage 29. An air introduction passage 35 is provided in the fixed housing 2 to supply air to the air supply passage 34 of the outer ring collar 31. The inner ring collar 32 consists of a first ring portion 41 that faces the inner surface of the outer ring collar 31 from the radially inward side with a required gap between them, and a second ring portion 42 positioned between the first ring portion 41 and the inner ring 4b. The outer diameter of the second ring portion 42 is larger than the inner diameter of the outer ring collar 31, so that a gap G is formed between the outer ring collar 31 and the second ring portion 42, which serves as a guide passage 36 that guides the air blown out from the air supply passage 34 of the outer ring collar 31 to the oil drain passage 29.

The bearing capable of effectively preventing silt from entering comprises a bearing seat, a bearing inner ring, a bearing inner shaft and a retainer, the bearing inner ring is located in the bearing seat, the bearing inner shaft is located in the bearing inner ring, and rollers are evenly fixed to the retainer. The bearing is characterized in that oil seals are arranged on the two sides of the bearing inner ring, the outer rings of the oil seals are in interference fit with the inner ring of the bearing seat, and the outer ring of the bearing inner shaft is in interference fit with the inner rings of the oil seals; the oil seal is composed of a rectangular ring, an arc-shaped ring and a sealing ring, the sealing ring is located on the inner side of the rectangular ring, and the sealing ring is connected with the rectangular ring through the arc-shaped ring. According to the bearing capable of effectively preventing silt from entering, through common blocking of the rectangular ring, the arc-shaped ring and the sealing ring, not only can sealing of lubricating oil be achieved, but also external silt can be effectively prevented from entering, and therefore the bearing can be used as a plough share bearing of a disc plough working in soil.

To provide an inexpensive sealing member for a rolling bearing and a rolling bearing that can suppress pressure changes inside the rolling bearing and prevent grease leakage from inside the rolling bearing and the intrusion of foreign matter from outside the rolling bearing. [Solution] The sealing member for a rolling bearing has an annular core and an elastic sealing material fixed to the core, the core includes an annular portion and has at least one hole that penetrates the annular portion from one axial side to the other axial side. The elastic sealing material has a closing portion provided to close the hole, and the closing portion has at least one axially projecting peak and / or valley.