17results about "Needle bearings" patented technology

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 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.

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 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.

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.

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.

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 application discloses a split head bowl bearing and a processing device thereof. The split head bowl bearing comprises a bearing inner ring, a bearing outer ring and a retainer, the retainer is located between the bearing inner ring and the bearing outer ring, the bearing inner ring and the bearing outer ring are both composed of two split half circular rings, and the retainer is provided with a split; the processing device of the split head bowl bearing comprises a bottom die assembly, a middle die and an upper die. The bottom die assembly comprises a base and a split positioning device, the split positioning device is arranged on the base, the middle die is placed in a bearing ring to be processed and the outer surface of the middle die is in close contact with the bearing ring, a deformation device is arranged in the middle die, and the split direction of the split positioning device is the same as the stretching direction of the deformation device. The split head bowl bearing can be quickly processed, and the problem of heavy reinstallation of a wire harness during replacement of the split head bowl bearing is solved under the premise of guaranteeing the bearing capacity.

This utility model discloses a double-groove upper roller bearing structure for textile machinery, relating to the technical field of upper roller bearings. The utility model includes a mandrel with an oil storage chamber at its upper interior. A support sleeve is connected to the upper interior of the oil storage chamber, and a sealing sleeve is connected to the top of the support sleeve. An oil injection hole is located at the top of the sealing sleeve, and a check valve is connected to the bottom of the sealing sleeve. A flow-limiting layer is provided within the inner ring of the oil storage chamber. Oil delivery holes are located on both sides of the mandrel, and a cover plate is connected to one end of the mandrel. This utility model, through the oil storage chamber, flow-limiting layer, and oil delivery holes, allows for the storage of spare lubricating oil in the oil storage chamber. The lubricating oil, under the influence of gravity, passes through the oil delivery holes into the bushing, thus replenishing the lubricating oil lost at the microscopic level or evaporated. Furthermore, the micropore size of the flow-limiting layer controls the lubricating oil seepage rate, preventing a large amount of lubricating oil from rapidly passing through the oil delivery holes into the bushing, which would lead to excessive lubrication and increased resistance. This facilitates slow, continuous, and automatic replenishment of lubricating oil.

The utility model discloses a kind of needle roller bearings for aircraft landing gear, it is related to the technical field of aircraft landing gear, including outer ring and lubricating assembly, the inside of outer ring is provided with retainer, and the inside rotation of retainer is connected with needle body, the outside of outer ring is placed with outer sleeve, the inside of outer sleeve is set to lubricating assembly, and lubricating assembly includes oil inlet pipe, shunt cavity, oil injection hole, elastic strip and oil limiting groove.The needle roller bearings for aircraft landing gear are set through the setting of lubricating assembly, since oil inlet pipe is connected with the oil supply equipment outside, thus when needle body needs to be lubricated, it is not necessary to disassemble needle roller bearings as a whole, only need to inject oil into shunt cavity, with internal oil pressure increasing can extrude elastic strip and flow into oil injection hole from oil limiting groove, to spray to the outside of needle body, automatically lubricate operation, simultaneously, oil injection hole is inclined, so that the oil ejected covers the side of needle body, and when needle body rotates, it can be fully lubricated.

The invention relates to a balance shaft comprising: - an unbalance shaft (1) having an unbalance section (9, 10, 11, 12) and an adjacent bearing pin (3, 4) with an only partially cylindrical circumference, the cylindrical part-circumference (7) of which is oriented towards the unbalanced shaft mass, - a bearing ring (5) which surrounds the bearing pin, bears against the cylindrical part-circumference and delimits a free space together with a radially opposite bearing pin back, - and a clamping element (15) which is clamped in the free space and clamps the bearing ring radially against the cylindrical part-circumference. The clamping element is intended to secure the bearing ring against axial sliding on the bearing pin on both sides, the clamping element being connected in an axially interlocking manner to the unbalance shaft on one side and to the bearing ring on the other side.

The utility model relates to a high-precision anti-yaw needle roller bearing assembly for aircraft airfoil, auxiliary drive mechanism is installed on bearing shell, and the drive end of auxiliary drive mechanism is connected with bearing inner shell, the moving end of auxiliary drive mechanism is installed with oil supply mechanism, and the oil discharge end of oil supply mechanism corresponds with the gap between bearing shell and bearing inner shell, according to the rotation frequency of bearing inner shell, the roller is added lubricating oil, the outer wall of bearing shell is equipped with the clamping groove of equidistance arrangement, the utility model discloses a high-precision anti-yaw needle roller bearing assembly for aircraft airfoil, through the work of bearing inner shell when swinging and driving auxiliary drive mechanism, according to the frequency of the swing of airfoil, the lubricating oil is added to the airfoil bearing, when the airfoil swings to a certain number, the auxiliary drive mechanism adds lubricating oil to the bearing, avoids the situation that the bearing is missing lubricating oil and appears the yaw after long time work.