97results about "Needle bearings" patented technology

A mecanum wheel includes a first wheel frame having a circumference and a plurality of first mounting mechanisms spaced about the circumference. There is a second wheel frame having a circumference and a like plurality of second mounting mechanisms spaced about the circumference. There are a plurality of roller units, each having a roller surface and a hollow center cavity. There is an axle disposed in the hollow center cavity of each roller, and a first end of the axle is connected a first mounting mechanisms and the second end of each axle is connected to the second mounting mechanism. The second end of each axle includes a notched portion.

The utility model discloses a large-torque load-bearing bearing, which relates to the technical field of bearings and comprises an outer ring, a vertical curled edge is arranged on one side of the outer ring, and limiting bent edges are arranged on the other side of the outer ring in an annular array manner; the retainer is mounted on the inner side of the outer ring, and the spring pieces and the roller pins are arranged on the inner side of the retainer in an annular array manner; the retainer comprises two side check rings which are arranged in parallel, spacing baffles are integrally arranged on the side faces of the side check rings, and the spacing baffles are distributed on the inner sides of the side check rings in an annular array mode; according to the utility model, the cross section of the outer ring is L-shaped, the position of the retainer is positioned through the curled edge on one side, and the curled edge on the other side of the outer ring is replaced by the limiting bent edges which are arranged in an annular array manner, so that the side space of the outer ring is released, and the torque directly acts on the roller pins, thereby increasing the torque when the load bearing is used.

The utility model relates to the technical field of textile machinery, in particular to a swing arm joint connecting assembly of a high-speed warp knitting machine. Comprising a bearing outer sleeve, a plurality of roller pins arranged in an inner cavity of the bearing outer sleeve, a steel sleeve and a connecting pin shaft fixedly connected with the steel sleeve, a cavity of the bearing outer sleeve comprises oil storage areas on the two sides, and the outer wall of the bearing outer sleeve is provided with an oil injection hole communicated with a needle roller area, so that the problems that grease leaks outwards, foreign matter permeates into a needle roller bearing and the like in traditional swing arm connection rotation are solved, the service life of the swing arm joint connecting piece of a machine is effectively prolonged, and the service life of the machine is prolonged. And meanwhile, maintenance is convenient, the operation stability of the machine can be ensured, greasy dirt permeating to grey cloth is reduced, and the effect of saving cost can be achieved.

The utility model discloses a roller pin spinning roller structure, which comprises a spinning roller shaft, the spinning roller is arranged on the spinning roller shaft in a sleeving manner; the rolling needles are arranged between the rotating wheel shaft and the rotating wheel, and the rolling needles are sequentially arranged along the periphery of the rotating wheel shaft; the glands are pressed at the two ends of the spinning roller; and the needle bearing is arranged between the gland and the spinning roller. The rolling needle spinning roller structure is simple in structure and reasonable and compact in design, the bearing capacity of the spinning roller structure can be effectively improved, the size of the spinning roller can be effectively reduced under the condition of the same bearing capacity, the service life of the spinning roller can be effectively prolonged, and therefore cost can be effectively saved.

To suppress the occurrence of micro-spalling even in an area shallower than 40 μm from a surface, thereby prolonging a service life of a rolling bearing used in lean lubrication environment in increasingly electrified devices such as an e-Axle and multi-stage automatic transmissions (AT).SOLUTION: A rolling bearing uses a rolling component consisting of a planetary gear 1 corresponding to an outer ring of the rolling bearing, a shaft 2 corresponding to an inner ring, and rolling elements 3, where a micro-Vickers hardness is 800 to 930 Hv0.1 from a surface to a depth of 25 μm, an absolute value of a residual compressive stress on the surface is 850 MPa or more, and a half-width of an X-ray diffraction peak on the surface is 6.0 to 6.7°.SELECTED DRAWING: Figure 2

To provide a rolling member capable of prolonging the service life by suppressing micro-spalling.SOLUTION: The hardness at a depth of 0. 05mm or more and 0. 20mm or less from a contact surface, which is a surface where needle roller 2 comes into contact with another component, is 733HV or more. The contact surface has a surface roughness Ra of 0.01 μm or more and 0.05 μm or less. The nitrogen concentration of the surface layer portion including the contact surface is 0.20 mass% or more and 0.60 mass% or less.SELECTED DRAWING: Figure 2

The plane thrust double-row bearing comprises a plane retainer and a plurality of roller pins, the plane retainer comprises a center mounting hole, and the plane where the center mounting hole is located is a datum plane; the first roller pin mounting part and the second roller pin mounting part are annularly arranged along the reference surface; the first roller pin mounting part comprises a first protruding part which is formed by stamping and protruding towards the upper surface or the lower surface of the reference surface, and the second roller pin mounting part comprises a second protruding part which is arranged in a direction opposite to that of the first protruding part; the first protruding part and the second protruding part are each provided with a plurality of rolling needle installation grooves in an annular punch forming mode, rolling needles are arranged in the rolling needle installation grooves, the double-row bearing is of a thin-wall retainer structure, the manufacturing cost is low, two rows of rolling needles are arranged on the retainer, the structure is small, and the load is large; the large load requirement can be met under the condition that the size of the product is relatively small.

Axial end portions (16) in the column portions (14) of the cage (12) are arranged on the outer diameter side, axial central portions (17) in the column portions (14) are arranged on the inner diameter side, the axial end portions (16) and the axial central portions (17) have pocket wall surfaces (18) facing the pockets (15), an inner diameter side region in the pocket wall surface (18) provided in the axial end portion (16) and an outer diameter side region in the pocket wall surface (18) provided in the axial central portion (17) constitute a repeating region (Rb) which repeats in the radial position, the repeating region (Rb) includes a roller guide surface which guides the needle-shaped roller (11), and intersects with a pitch circle (PCD) of the needle-shaped roller (11).

The utility model relates to the technical field of bearing machinery, in particular to a bearing of a robot dog. A joint of an existing robot dog adopts a crisscross bearing, and a crisscross bearing raceway is provided with a cracking opening and is not provided with a retainer, so that after the robot dog runs for a long time, the service life is relatively short, and the rigidity and the bending resistance cannot meet the expected requirements. The utility model discloses a bearing of a robot dog. A first outer ring and a second outer ring are doubly fastened by a fixing mechanism and a guide mechanism; a retainer with an inclined angle is arranged among the first outer ring, the second outer ring and the inner ring, a plurality of roller pins are arranged in the retainer, and the roller pins are of a double-row structure; the retainer main body is of a conical structure, the section of the retainer main body is of an approximately fusiform structure, and the roller pin grooves are of a quadrilateral structure; and at least one end among the first outer ring, the second outer ring and the inner ring is provided with a sealing mechanism. The retainer is reasonable in structure, the retainer of an approximate fusiform structure can work in a narrow space, and the special quadrangular structure increases the strength and reduces the layout of the space.

The application discloses a high-load-capacity needle bearing and relates to the technical field of bearings. The high-load-capacity needle bearing comprises a bearing ring assembly, a bearing retaining assembly and a guide assembly fixed on the surface of the bearing retaining assembly. The bearing retaining assembly comprises a retainer, the outer surface of the retainer is provided with an installation groove, and the inner wall of the installation groove is uniformly provided with a plurality of needle holes in the circumferential direction. When the ceramic material-made ball body is in contact with the outer ring side groove and the inner ring side groove, the rolling friction coefficient is significantly reduced, which helps to reduce energy loss and improve the rotating speed of the bearing during operation. The ball body can share part of the load borne by the retainer. During the operation of the bearing, especially when a large radial or axial load is borne, the ball body can uniformly transmit part of the load to the bearing outer ring and the bearing inner ring, thereby reducing the burden of the retainer and improving the overall load-carrying capacity of the bearing.

The invention relates to an axial rolling bearing unit with rolling bodies (4) which are arranged between two annular axial bearing washers (1, 2) and which are guided by means of a bearing cage (3) formed from a sheet metal material, said bearing cage having a respective edge rim (5, 6) extending in the axial direction radially on the interior and on the exterior in order to radially guide the rolling bodies (4). At least one of the edge rims (5) is provided with a bent terminal section (7) in the counter-direction so as have a double-rim design, the distal end section (8) of which is designed as a form-fitting holding means of the bearing cage (3) for the at least one axial bearing washer (1).

The driven bearing (1) has: an inner member (10) including a first body portion (50) and a flange portion (52); an outer ring (20); a plurality of rolling elements (40); and a first sealing member (30A), including an annular first portion disposed between the outer peripheral surface (52A) of the flange portion (52) and a first surface (22A), and at least a portion thereof forming a sealing structure with the outer ring (20). The first portion has a shape in which the outer diameter in the axial direction increases as it approaches the end face (52B) of the flange portion (52) opposite to the first rolling surface (51A).

Planetary gear carrier arrangement (1) of a planetary gear in which a number of planet gears (2) are rotatably arranged on each bearing pin (3) about an axis of rotation (a), wherein the bearing of the planet gear (2) on the bearing pin (3) is effected by a radial bearing (4) and an axial bearing (5) and wherein the axial bearing (5) is effected by at least one bearing disk (5), wherein the bearing disc (5) has at least one axially extending projection (7) along its circumference at a radially internal recess (6), wherein the radial bearing (4) comprises at least one needle roller bearing (4), wherein the needle roller bearing (4) comprises a cage (8), wherein the cage (8) has a radially inward surface (9) which is designed for the attachment of at least one projection (7), characterized by that the radially inner surface (9) is a recess that is incorporated into the cage (8).

Needle cage for guiding needle rollers of a needle roller bearing of a planet gear of a planetary gear on a planet carrier, the needle cage comprising a flange, wherein the needle cage is designed such that a thrust washer can be arranged radially outside on the needle cage; and planetary gear with a planet gear mounted on a planet carrier, a needle cage for guiding needle rollers of a needle roller bearing of the planet gear, wherein a region between the planet carrier and the needle cage is thrust washer-free.

The utility model discloses an integrated thrust needle roller bearing, and belongs to the field of bearing design and machining. The integrated needle roller thrust bearing comprises a retainer, a roller, a first gasket, a second gasket and an outer ring, a plurality of rollers are arranged on the retainer, an assembly of the retainer and the plurality of rollers is arranged between the first gasket and the second gasket, and outer rings are arranged on the peripheral sides of the first gasket and the second gasket and used for limiting the first gasket and the second gasket; the outer ring is provided with an outer ring opening. According to the integrated thrust needle roller bearing, integration of the thrust needle roller bearing is achieved, and the integrated thrust needle roller bearing has the advantages of being compact in structure, easy to assemble, high in precision, low in production cost and the like.

The invention relates to a base washer and bearing assembly. The invention particularly relates to a base washer that provides a homogeneous grease distribution and has the effect of reducing friction on the contact surfaces of the needle rollers, and a bearing assembly comprising this base washer.

The utility model discloses a one -way clutch bearing, including the outer sleeve, the inner cover and arrange in the retainer of needle passageway, a plurality of needle, a plurality of spring piece, a plurality of spring piece set up in the retainer crossbeam department, a plurality of needle set up in the retainer window hole, the inner peripheral of outer sleeve is the mounting hole of straight -through outer sleeve axial outside, and the both ends of outer sleeve inner peripheral are equipped with sealing baffle ring respectively, and the inner end surface of sealing baffle ring is opposite the axial outer end surface of retainer. The inner peripheral of outer sleeve adopts straight -through / ladder hole mode, need not stamping and so on process, and the machining of outer sleeve can have higher machining accuracy, and the production, installation, maintenance of one -way clutch bearing are also more convenient, through the setting of sealing baffle ring, can form effective block to retainer, makes retainer not appear axial displacement, and the machining accuracy of outer sleeve, inner cover combines, makes bearing operation more stable, improves the vibration reduction, noise reduction ability of bearing to some extent, prolongs the service life of bearing.

The invention relates to an actuating coupling (100), in particular for an electromechanical switch drive in railway traffic, with a coupling hub (132) rotatably driven about an axial direction (Ax) of the actuating coupling (100), in which a threaded spindle (134) can be mounted, wherein the coupling hub (132) is mechanically coupled to a rotatable coupling housing (110) of the actuating coupling (100) via an overload coupling (120), and the coupling housing (110) is rotatably mounted on the coupling hub (132) by means of two coaxial combination roller bearings (140, 140).

A novel single-rotor transmission system structure for an aviation rotor engine belongs to the technical field of single-rotor transmission of aviation rotor engines, and is characterized by comprising an eccentric shaft, a fixed gear and a support frame, the fixed gear and the supporting frame are rotationally connected with the eccentric shaft through a supporting bearing, a rotor is rotationally inserted in the middle of the outer side surface of the eccentric shaft, a rotor inner gear ring is arranged on the side surface in the rotor, and the lower surface of the rotor inner gear ring is inserted in the outer surface of the inner side end of the fixed gear; the eccentric shaft and the rotor inner gear ring are connected with each other through the needle bearing, so that the cost of using a coating is reduced, and the eccentric shaft runs stably due to the support of the double bearings.

A follower bearing 1 includes: an inner member 10 including a first body 50 and a flange 52; an outer ring 20; a plurality of rolling elements 40; and a first sealing member 30A including an annular first portion disposed between an outer peripheral surface 52A of the flange 52 and a first surface 22A and at least partially forming a sealing structure between the first portion and the outer ring 20. The first portion has an outer diameter that gradually increases toward a first end surface 52B at an end opposite to a first rolling surface 51A of the flange 52 in an axial direction.

The utility model provides a needle bearing, and relates to the field of bearings. The needle bearing comprises an outer ring, a retainer and a rolling mechanism used for reducing loss generated when a bearing rotates, a limiting mechanism facilitating replacement of part of assemblies of the rolling mechanism is arranged above the retainer and comprises a limiting plate and a mounting groove, the limiting plate is arranged above the rolling mechanism, and the mounting groove is formed in the limiting plate. The mounting groove is formed in the top of the limiting plate, the side face of the retainer is rotationally connected with the inner wall of the outer ring, and the rolling mechanism is arranged on the side face of the retainer. According to the needle roller bearing, by arranging the limiting mechanism, when the needle roller needs to be assembled and disassembled, the needle roller can be taken down or installed by rotating the limiting plate in the rotating groove until the installing groove coincides with the rolling groove, the needle roller is prevented from being replaced one by one, the convenience of the needle roller assembling and disassembling link is improved, the workload is reduced, the time needed by operation is shortened, and the working efficiency is improved; and the maintenance cost of the bearing is reduced.

In a thrust needle roller bearing, even in an environment where an amount of lubricating oil is small, the amount of lubricating oil is held and seizure is prevented. The thrust needle roller bearing includes a plurality of needle rollers, a bearing ring (31) having an annular raceway surface (31a) on which the needle rollers roll, and a cage that rollably holds the needle rollers, in which an oil repellent film (41a) is formed by oil repellent treatment on a portion of the raceway surface (31a) other than a portion in contact with the needle rollers.

The utility model provides a one-way bearing structure which is applied between an input piece and an output piece, the one-way bearing is provided with a plastic mounting seat, a plurality of pin rollers and a metal conduction seat, the plastic mounting seat is provided with a plurality of mounting grooves which are arranged at equal intervals and are through in the radial direction, the pin rollers are accommodated in the opposite mounting grooves, and the metal conduction seat is connected with the pin rollers. And a plurality of conduction inclined surfaces corresponding to the mounting grooves are formed on the peripheral surface of the metal conduction seat corresponding to the plastic mounting seat, so that the rollers on the plastic mounting seat can selectively press the metal conduction seat by utilizing the opposite conduction inclined surfaces to generate a one-way driving effect. Therefore, the weight of the one-way bearing can be reduced by utilizing the plastic mounting seat which can be molded, and the effects of light weight, cost reduction and easiness in processing can be achieved under the condition that the strength of transmission power is not influenced.

Provided is a reduction gear that is thinner than a conventional one without impairing performance and characteristics. The present invention is a reduction gear (1) comprising: an eccentric shaft (4) in which eccentric portions (41, 42) perform an eccentric motion by rotation of a shaft; planetary gears (51, 52) which perform an eccentric motion by the eccentric motion of the eccentric portions (41, 42); a case (9) which functions as internal teeth for the planetary gears (51, 52); and a carrier (7) which is connected to the planetary gears (51, 52) and which outputs rotation of the planetary gears (51, 52), wherein each component of the planetary gears (51, 52) and the carrier (7) is produced to have a thickness less than that of a conventional component by a proportion corresponding to the increase in torsional rigidity of each component due to shot peening when a material is processed, and thereafter shot peening is performed on a surface of the component so that the torsional rigidity is increased.

To reduce the bearing width of a shell-type roller bearing that comprises a shell outer ring, a radial bearing portion, and a thrust bearing portion, suitable for use in supporting an end portion of a shaft.SOLUTION: A shell outer ring 4 includes one inner flange portion 4b protruding from one axial end of a cylindrical portion 4a, and another inner flange portion 4c protruding comparatively from the other axial end of the cylindrical portion 4a. A radial bearing portion includes a first raceway surface 4e of the cylindrical portion 4a, a plurality of first needle rollers 5, and a first retainer 6. A thrust bearing portion includes a second raceway surface 4f of the other inner flange portion 4c, a plurality of second needle rollers 8, and a second retainer 9. The first retainer 6 has one end ring portion 6a and another end ring portion 6b. The other inner flange portion 4c includes a central cylindrical portion 4d that supports the second retainer 9 radially from the radially inner side. The thrust bearing portion is arranged radially inwardly apart from the cylindrical portion 4a, and the other end ring portion 6b projects between the cylindrical portion 4a and the thrust bearing portion so as to be positioned radially outwardly of the thrust bearing portion.SELECTED DRAWING: Figure 1

The objective is to provide a shell-type rolling bearing that does not require a large interference fit to deform a housing made of soft light alloy or thin-walled metal, and that is less prone to creep when tightly fitted, while also providing sufficient protection against detachment. [Solution] A shell-type rolling bearing is provided, which has a shell-type outer ring with the raceway surface of the rolling elements on the inner diameter side of the cylindrical portion. The shell-type outer ring has at least two gently convex curved large diameter portions 5 for interference fit at intervals in the axial direction of the cylindrical portion on its outer diameter surface, and a gently continuous concave curved small diameter portion 6 between these large diameter portions 5 for interference fit.

The utility model discloses a deep groove ball bearing with double half inner rings, which comprises a bearing outer ring, bearing needle rollers are uniformly arranged on two sides inside the bearing outer ring, a retainer is arranged outside the bearing needle rollers, and bearing inner rings matched with the bearing outer ring are arranged on the inner sides of the bearing needle rollers. Through the structural design of the storage cavity, storage work of lubricating oil can be achieved, then the oil guide barrel can drive the oil outlet barrel to enter the storage cavity to achieve compression of a spring in cooperation with later jacking of a bearing roller needle on the oil guide barrel, and then the lubricating oil enters the oil outlet barrel and the oil guide barrel through an oil inlet; and finally, the lubricating oil is adsorbed by the adsorption sponge, the overflow phenomenon caused by excessive lubricating oil can be prevented through the adsorption of the adsorption sponge, and the outer part of the roller pin of the bearing can be conveniently coated and lubricated in advance, so that the later-stage automatic lubricating function of the bearing is realized, frequent manual lubricating operation of an operator is not needed, and the convenience and flexibility of later-stage lubricating are improved.

The present application relates to a kind of reducers, the reducer of the present application has: the shell of outer diameter D;Multiple crankshafts;And gear carrier, it supports multiple the crankshafts respectively as can rotate, under the action of multiple the crankshafts, relative to the shell rotating movement.Multiple the crankshafts all have: multiple eccentric bodies, with diameter dc1;Crankshaft journal, with diameter dc2;n1 needle rollers, it is arranged around multiple the eccentric bodies, and with diameter size dr1;And n2 needle rollers, it is arranged around the crankshaft journal, and with diameter size dr2, satisfy relationship formula 5.5≤D / dc1≤7.0.

The invention relates to a bearing assembly having a shaft, a first bearing and a nut, wherein the nut has a thread which is screwed onto a threaded region configured on the shaft, wherein a bearing seat configured on the shaft adjoins the threaded region, wherein an inner ring of the first bearing contacts the bearing seat, wherein the nut contacts the inner ring of the first bearing, wherein the inner ring of the first bearing is arranged spaced apart from the threaded region of the shaft, wherein a relief region of the thread cut out in the threaded region of the shaft is arranged in a partial region of the bearing seat adjoining the threaded region.