46results 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 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 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 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 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.

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 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.

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 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.

Current supply device 10 of the rotor of an electric machine consisting of: a first fixed element 200, made of insulating material, composed of a radial face 202, a tubular part 201 carrying lugs 203 for fixing to a housing 40 by means of screws 45 and centered on a shoulder 41 of the housing 40 by an internal diameter 201a; a second fixed element 300, made of insulating material, centered in the first fixed element 200; a rotating element 100, made of insulating material, carried by a rotor shaft 20; two current transmitting discs 400 interposed between the fixed elements and the rotating element; characterized in that the rotating element 100 is arranged in the tubular portion 201 of the fixed element 200 between the radial face 202 and the second fixed element 300, and the entire assembly of components is brought into contact and under pressure by a corrugated washer 320 pushing on the second fixed element 300, bearing against the first fixed element 200. Figure for the abbreviation: Fig. 1

A transmission comprises an input element, a first output element (5), a second output element (6), and a planetary gear device (10, 20). The planetary gear device (10, 20) comprises a first, a second and a third gear set element. The third gear set element of the planetary gear device (10, 20) is connected torque proofly to the second output element (6). The third gear set element is supported by a first bearing unit (41) being configured for receiving an axial force in a first direction and a second bearing unit (42) being configured for receiving an axial force in a second direction opposite to the first direction. At least one of the first bearing unit (41) and the second bearing unit (42) extends radially outward of the tooting of the third gear set element, the toothing of the third gear set element meshing with the toothing of a further gear set element.

A bearing arrangement includes a rotation-translation converter, a support component and an axial bearing with a single cage. The rotation-translation converter includes a first component that is axially positionally fixed and rotatable, and a second component that is axially movable by rotation of the first component. The axial bearing is for supporting the first component on the support component. The single cage includes a plurality of first pockets populated by first needles and having a first root circle diameter, and a plurality of second pockets, separate from the first pockets, populated by second needles and having a second root circle diameter that is greater than the first root circle diameter.

This enables the creation of a thinner gearbox than conventional gearboxes without compromising performance or characteristics. [Solution] In a reduction gear 1 comprising an eccentric shaft 4 in which eccentric parts 41 and 42 perform eccentric motion due to the rotation of the shaft, planetary gears 51 and 52 rotatably supported by the eccentric parts 41 and 42 and performing eccentric motion in synchronization with the eccentric motion of the eccentric shaft 4, a case 9 to which a plurality of outer peripheral pins 6 that function as internal teeth for the planetary gears 51 and 52 are rotatably attached, and a carrier 7 which is rotatably supported by the eccentric shaft 4 and consists of covers 71 and 72 that clamp the planetary gears 51 and 52 and outputs the rotation of the planetary gears 51 and 52, the planetary gears 51 and 52 and the covers 71 and 72 are manufactured by reducing their size by the amount by which the torsional rigidity of each part is increased by shot peening when processing the material, and shot peening is applied to the surface of the parts.

The application discloses a needle bearing rotary check valve and relates to the technical field of check valves.The needle bearing rotary check valve comprises a valve body, a valve cover connected with the valve body through bolts, a pin shaft, a rocker arm, a valve clack, a bearing fixing frame and a valve seat, the bearing fixing frame is provided with a supporting part, and the outer surface of the supporting part is provided with a locking part.The device is provided with an independent bearing fixing frame outside the valve body, and the whole set of needle bearings (including an inner ring, needle pieces and an outer ring) are integrated in the bearing fixing frame to form an external and modular rotary bearing assembly.The design is different in that the professional needle bearings are responsible for the functions of bearing main radial load and rotary motion, the pure rolling of the internal needle pieces is used to replace the traditional sliding friction, and thus the problems of large opening and closing resistance, high starting pressure difference and early wear caused by sliding friction are eliminated.Meanwhile, the functions of the wear-resistant bushing and the sealing assembly located at the penetration of the valve body have been essentially changed.

The utility model relates to a through hole type conjoined synchronous pulley, which aims at solving the technical problems that the conjoined synchronous pulley with a bearing function is formed by arranging double rows of steel balls or roller pins between an outer sleeve and an inner sleeve which are less adopted as an outer ring and an inner ring of similar products. Equally-spaced teeth are arranged on the outer diameter of an outer ring wheel body of the conjoined synchronous belt wheel. The bearing is characterized in that double rows of roller pins, double rows of steel balls or a combination of one roller pin and one steel ball are arranged between the inner diameter of the outer ring wheel body and the outer diameter of the inner sleeve at equal intervals, the inner sleeve is a through hole concentric inner sleeve or a through hole eccentric inner sleeve, and at least one end of the inner sleeve extending out of the outer ring wheel body is provided with a through screw hole. Dustproof covers are respectively arranged at annular orifices of the outer ring wheel body on two sides of the outer diameter of the inner sleeve; protruding limiting parts are arranged on the end faces of the two sides of the equally-spaced teeth of the outer ring wheel body respectively, and the screw holes of the inner sleeve are arranged at 90 degrees or 120 degrees. The inner through hole type conjoined synchronous pulley is suitable for being used as an embroidery machine and other similar products.

The invention relates to a solid lubricant filled shell-shaped needle bearing. In a solid lubricant-filled shell-shaped needle bearing having a shell-shaped outer ring (1), a plurality of needle rollers (2), and a solid lubricant (3), in which the plurality of needle rollers (2) are held by the solid lubricant (3), a curved recess (10) having a concave curve-shaped cross-section recessed in the axial direction is formed on a side surface of a second flange section (6) on the side filled with the solid lubricant (3).

The utility model discloses a one-way needle roller bearing which comprises a bearing inner ring and a bearing outer ring, the bearing outer ring is sleeved on the periphery of the bearing inner ring, the bearing outer ring and the bearing inner ring are in clearance fit, and a one-way stop device and a plurality of needle rollers are arranged on the bearing inner ring. The one-way stop device and the roller pin are integrated on the same radial plane of the bearing inner ring, the roller pin is in clearance rolling fit with the bearing inner ring and the bearing outer ring, and the one-way stop device can be connected with the bearing outer ring. And the one-way stop device is used for controlling whether the bearing inner ring and the bearing outer ring synchronously rotate or not. The needle roller and the one-way stop device are integrated on the same radial plane of the bearing inner ring, traditional height limitation is broken through through single-layer layout, the overall thickness of the one-way needle roller bearing can be effectively reduced, and the one-way needle roller bearing can be suitable for being installed and used in places with small axial space.

A shell-type needle roller bearing is provided which includes an outer ring in which a material excellent in corrosion resistance is used, and which can be easily press-fitted and can be manufactured at a low cost. A shell-type needle roller bearing is manufactured that includes a shell-type outer ring made of an austenitic stainless steel material, and having a radially outer surface including a non-heat-treated surface.

A rotary bearing for a ceiling mount includes a housing, a shaft which can be rotated about a longitudinal axis and which can be rotated in an adjustable rotational range relative to the housing, a housing-side first stop, and at least a shaft-side second stop. The first stop strikes the at least one second stop at the end positions of the rotational range. The second stop being adjustable in the circumferential direction about the shaft in order to configure the rotational range and being arranged in a securable manner on the shaft side. The at least one second stop is designed as a sliding block, is movably arranged in the circumferential direction in a shaft-side clamping groove, and is releasably clamped on the shaft side by means of clamping means.

The utility model relates to the technical field of bearings, in particular to a self-locking needle roller bearing, which comprises a shaft body, a needle roller bearing and a needle roller bearing, the top surface of the positioning ring protrudes to form an inner positioning lip and an outer positioning lip, a clamping groove is formed between the inner positioning lip and the outer positioning lip in a spaced mode, the positioning ring is arranged in the shaft body, the outer wall surface of the positioning ring is attached to the inner wall surface of the cavity of the shaft body, the end cover is used for fixing the shaft body and the positioning ring, and the bottom surface of the end cover protrudes to form an inner fixing lip and an outer fixing lip. The fixed inner lips and the fixed outer lips are arranged at intervals to form fixed grooves; through the design of a positioning inner lip, a positioning embedding part and a clamping groove on the positioning ring, a fixed inner lip, a fixed outer lip and a fixed groove on the end cover and the shaft body, primary fixation is formed under the cooperation of the clamping groove and the fixed inner lip, and secondary fixation is formed by embedding the shaft body and the positioning outer lip into the fixed groove under the cooperation of the shaft body and the positioning outer lip. The end cover and the shaft body form three-stage fixation, the connecting effect of the end cover and the shaft body is guaranteed, and the end cover is prevented from loosening.