1235results about "Ball bearings" patented technology

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 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 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 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.

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.

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.

An assembly of a gas turbine engine, having: a shaft having a shaft outer surface and a shaft inner surface, the shaft axially extends from a shaft forward end to a shaft aft end, the shaft forward end defines axially extending shaft slots that are circumferentially spaced apart from each other; a bearing having a first race, the first race is ring shaped with a first race outer surface and a first race inner surface, the first race is sized so the first race inner surface fits around the shaft outer surface, the first race extends axially from a first race forward end to a first race aft end, the first race forward end defines radially inwardly extending bosses that are circumferentially spaced apart from each other and aligned with ones of the axially extending slots of the shaft forward end, rotationally fixing the first race against the shaft.

The present invention provides a bearing device that improves the ease of installation of fastening members and suppresses the occurrence of bearing malfunctions caused by improper posture of fastening members. [Solution] The bearing device comprises an inner ring, an outer ring, and a plurality of rolling elements arranged between the inner ring and the outer ring, wherein the inner ring has an annular portion and an extension portion that protrudes axially from the inner diameter end face of the annular portion and has an axial slit formed therein, and a clamping member that is fitted onto the extension portion and clamps and fixes the extension portion to the shaft. A stepped portion is provided at the inner diameter end of the clamping member on the bearing side, into which the outer diameter end of the annular portion can be fitted.

To provide rolling members with improved peeling resistance. [Solution] The rolling member has a surface that is in contact with other rolling members and is made of steel that has been hardened and tempered. The rolling member has a nitriding layer on its surface. The average nitrogen concentration on the surface is 0.10 mass percent or more. The average carbon concentration on the surface is 0.60 mass percent or more and 1.5 mass percent or less. The hardness on the surface is 800 Hv or more and 1000 Hv or less. The amount of retained austenite on the surface is 20 volume percent or less. In the nitriding layer, the area ratio of undissolved carbides with a particle size of 5.0 μm or less in a cross-sectional view perpendicular to the surface is 17 percent or less.

This rolling member has a surface that serves as a contact surface with respect to another rolling member, and is made of a steel that has been quenched and tempered. The rolling member has a nitrided layer on the surface. The average nitrogen concentration in the surface of the rolling member is 0.10 mass% or more. The average carbon concentration in the surface is 0.60-1.5 mass%. The hardness of the surface is 800-1000 Hv. The retained austenite content in the surface is 20 vol% or less. In a cross-sectional view perpendicular to the surface, the area ratio of undissolved carbides having a particle size of 5.0 μm or less in the nitrided layer is 17% or less.

To manufacture a retaining flange (20) intended to fit into a groove (22) of an outer ring (14) of a bearing (12), from a metal plate (37) having a plate thickness measured between a front face (201) and an opposite rear face (202) of the metal plate (37), at least two steps are carried out. By penetrating a first tool (40), along a reference axis (1) perpendicular to the plate (37) and in a penetration direction (A) from the front face (201) to an intermediate depth less than the plate thickness (37), material initially located inside a front geometric envelope (41) is displaced into a volume located axially between the intermediate depth and the rear face (202) of the retaining flange (20), and delimited by a roughing geometric envelope (39).Then, by penetration of a second tool (42) along the reference axis (1) and in the direction of penetration (A), the plate (37) is perforated to form a final bore (24) having a rear geometric envelope (43) located, in projection onto a plane perpendicular to the reference axis (1), radially inside the front geometric envelope (41) and outside the roughing geometric envelope (39).

To suppress the transmission of vibrations from rolling bearings placed between the shaft and the support body using a simple configuration, while also suppressing the misalignment of the rotation center of the rolling bearings. [Solution] A vibration damping structure 12 comprising: a shaft 20; a rolling bearing 40 having an inner ring 42 which fits with the shaft 20 and has an inner end face 42b, an outer ring 44 which has an outer end face 44b which faces axially, an outer diameter portion 44a which faces radially outward, and an outer corner portion 44c which connects the outer diameter portion 44a and the outer end face 44b; a support 30 having a fitting portion 34 which fits with the outer ring 44 and an opposing portion 36 which faces the inner end face 42b or the outer end face 44b; and an annular vibration damping member 50 which is disposed between the fitting portion 34, the opposing portion 36 and the outer corner portion 44c and applies elastic force to the outer ring 44 which acts radially and axially upon contact with the outer corner portion 44c.

Bearing arrangement (1), comprising a bearing journal (5) for rotationally fixed arrangement on a first housing part (3). The invention further relates to a side channel compressor (27) and a fuel cell system (2) with a bearing arrangement (1) according to the invention.

[Integrated electrically insulated bearing device, particularly for electric motors or machines] The device includes a bearing 10 having a first ring 12 and a second ring 14. The device includes an insulating sleeve 26 mounted on the second ring 14 and having a bushing 28 and an insulating lining 30. The insulating lining is fixed to the second ring 14 and to at least one of the outer and inner surfaces of the bushing 28. The bushing 28 also includes first and second front faces 28c, 28d defining the axial length of said bushing.A first connecting chamfer 28e links the first front face 28c of the socket to the outer surface, and is provided with a first concave radius connecting to the outer surface by forming a sharp edge, a second concave radius connecting to the first front face 28c by forming another sharp edge, and a frustoconical surface extending between the first and second concave radii. Reference: Figure 1.

Provided is a rolling bearing with stable sealing properties. This rolling bearing comprises inner and outer rings (2, 3), a plurality of rolling elements, and a contact-type seal member (6) that closes a bearing space between the inner and outer rings (2, 3). The seal member (6) is provided with a seal collapse suppression means (St), a grease flow suppression means (GS), and a radial change amount reduction means (Rcr). The seal collapse suppression means (St) keeps an inner peripheral side portion (13) of the seal member (6) from collapsing inward in the axial direction. The grease flow suppression means (GS) suppresses the flow of grease from the inner peripheral surface of an auxiliary lip (16) to the inner-diameter-side tip of a main lip (15), and brings the main lip (15) into a desired contact state with a seal groove (7). The radial direction change amount reduction means (Rcr) reduces the radial direction change amount of the main lip (15) to a predetermined value or less within the range of an interference fit.

The bearing is arranged on a rotating shaft between two rotating parts which rotate relatively in a sleeving mode, the bearing comprises an outer rotating body, an inner rotating body and a transmission part, the outer rotating body is arranged in one rotating part, the inner rotating body is arranged in the outer rotating body in a relatively rotating mode, and the transmission part is arranged in the outer rotating body. Any end of the inner rotating body extends out of the outer rotating body to abut against the other rotating part, so that a preset distance is kept between the two rotating parts, and a plurality of transmission parts are arranged between the outer rotating body and the inner rotating body to reduce rotating friction; the outer rotating body is arranged in one rotating part, one end of the inner rotating body extends out of the outer rotating body to abut against the other rotating part, so that the bearing is limited to move in the axial direction through the opposite acting force of the other rotating part, the preset distance is kept between the two rotating parts, and relative rotation between the two rotating parts is not interfered; extra mounting of spacer bushes is not needed, so that the assembly efficiency is improved, and the mounting steps of the trainer are simplified.