To provide a piston ring that has low content of a sulfur atom, eliminates the need for a special exposing device and a strict safety measure, and is low in cost. A piston ring 1 is used in a reciprocating compressor that compresses gas and is formed of a resin composition containing at least polyetheretherketone resin or thermoplastic polyimide resin as a main component. The resin composition contains carbon material in which the content of a sulfur atom is 200 ppm or less. The carbon material is at least one of carbon fiber, graphite, and coke powder. The resin composition contains total 5-35 volt of the carbon material relative to the whole of the resin composition.
F16J 9/28 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials of non-metals
In a parallel link mechanism, a distal end side link hub is coupled to a proximal end side link hub via three link mechanisms such that a posture of the distal end side link hub can be changed. Each link mechanism includes a proximal side end link member, a distal side end link member, and a center link member, and forms a quadric chain link mechanism composed of four revolute pairs. A singular point occurs when a central axis of the proximal or distal end side link hub and a central axis which is a rotation axis of a revolute pair section of the proximal or distal side end link member and the center link member coincide with each other. An axis angle of the center link member is specified such that a posture in which the singular point occurs is avoided.
A tapered roller bearing comprises inner and outer rings, tapered rollers (15), and a retainer (17) for retaining the tapered rollers (15). The retainer (17) has a plurality of retainer segments (20) divided and coupled in the circumferential direction. Each of the retainer segments (20) has a large-diameter-side arc-shaped section (22) and a small-diameter-side arc-shaped section (21) extending in the circumferential direction, and a plurality of column sections (23) connecting the large-diameter-side and small-diameter-side arc-shaped sections (22, 21). A dropout prevention member (32) for preventing a tapered roller (15) accommodated in a pocket (16) from dropping out on the outer diameter side is detachably provided to the retainer segment (20). The dropout prevention member (32) has: a columnar section (32a) that comes into contact with the outer diameter surface of the tapered roller (15); a segment engagement section (32c) that engages with the inner diameter surface and a large-diameter-side lateral surface (22b) of the large-diameter-side arc-shaped section (22); and a beam section (32e) that connects the pillar section (32a) and the segment engagement section (32c) at different positions in the circumferential direction.
F16C 33/51 - Cages for rollers or needles formed of unconnected members
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
In the present invention, in a heating process for induction heating an annular steel workpiece W so that the workpiece W undergoes full-body quenching, a temperature raising step for continuously raising the temperature of the workpiece W includes: a primary temperature-raising step S1 for raising the temperature of the workpiece W until reaching the Curie temperature of the steel; and a secondary temperature-raising step S3 for raising the temperature of the workpiece W until reaching a predetermined temperature higher than or equal to the quenching temperature. Between the temperature raising steps S1 and S3, a thermal diffusion step S2 is carried out for performing thermal diffusion in the workpiece W by lowering the output of heating coils 2A, 2B more than when the primary temperature-raising step S1 is carried out.
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ringsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for bearing races
C21D 1/18 - HardeningQuenching with or without subsequent tempering
H05B 6/06 - Control, e.g. of temperature, of power
H05B 6/10 - Induction heating apparatus, other than furnaces, for specific applications
H05B 6/44 - Coil arrangements having more than one coil or coil segment
A ball screw device 1 is provided with: a ball screw 10 having a screw shaft 11 and a nut 12 relatively rotating via a plurality of balls 13; a rolling bearing 30 rotatably supporting the screw shaft 11; and a carrier 24 of a planetary reduction mechanism 20 transmitting rotational power of a rotation drive source to the screw shaft 11. The carrier 24 in a flange shape is integrally provided on the screw shaft 11, and an inner ring 31 of the rolling bearing 30 is fixed to an outer peripheral surface of the carrier 24.
The method of the present invention employs: a testing step S1 in which a prescribed voltage is applied to a rolling bearing in a state in which the inner ring and the outer ring are rotating relative to one another; an investigation step S2 in which a search is conducted, within a first rolling surface and a second rolling surface that have completed the testing step, for an abnormal surface portion generated when a single electric discharge occurs between the first rolling surface or the second rolling surface and the rolling body; and an evaluation step S4 in which, if an abnormal surface portion comprising an electric discharge mark generated with an uneven shape is found in the investigation step, it is determined that the rolling bearing may generate ridge marks due to electrolytic corrosion on the first rolling surface or the second rolling surface, and if no electric discharge mark is found in the investigation step, it is determined that the rolling bearing does not generate ridge marks.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere
The present invention comprises: an outer joint member 21 and an inner joint member 23; a shaft member 2 coupled with the inner joint member 23 so as to be capable of transmitting torque; and a cylindrical boot 30 which seals a joint inner space. The boot 30 is a molded article of a flexible material integrally including a large-diameter cylindrical part 31 and a small-diameter cylindrical part 32, an elastic part 33 which extends from the small-diameter cylindrical part 32 toward the large-diameter cylindrical part 31 and which is elastically deformed by following relative angular displacement of both of the joint members, and a connection part 34 which connects the large-diameter cylindrical part 31 and the elastic part 33. The connection part 34 of the boot 30 is formed thicker than the elastic part 33.
F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
In order to prevent deterioration of wireless communication performance due to filling of a sealing material in a state in which a wireless communication circuit is accommodated in a housing chamber of a sensor-equipped spacer disposed between bearings, a spacer (5) is provided with a substrate (18) having an antenna (18a) of the wireless communication circuit formed on one surface thereof. A housing chamber (14) of the spacer (5) has a recess (20) that forms a space with the one surface of the substrate (18). The substrate (18) closes the recess (20) in a state in which the antenna (18a) faces the recess (20).
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 35/12 - Rigid support of bearing unitsHousings, e.g. caps, covers for spindles with ball or roller bearings
9.
BEARING DEVICE WITH STRAIN SENSOR, OUTER RING SPACER WITH STRAIN SENSOR, AND SPINDLE DEVICE FOR MACHINE TOOL
A bearing device (1) with a strain sensor is configured such that a preload applied from a preload nut (30) is transmitted through a first inner ring (34), a first rolling element (35), a first outer ring (33), an outer ring spacer (26), a second outer ring (38), a second rolling element (40), and a second inner ring (39). The strain sensor is constituted of a central strain sensor (28) disposed at the axial center of the outer ring spacer (26), and an offset strain sensor (29) disposed offset in the axial direction from the axial center of the outer ring spacer (26).
In order to provide a rolling bearing that is suitable for an electric axle unit and that is capable of achieving both prevention of traveling wave type creep of an inner ring or an outer ring and prevention of electrical corrosion of the inner and outer rings and rolling elements, one peripheral part (22) of an inner peripheral part (12) of the inner ring (10) and an outer peripheral part (22) of the outer ring (20) includes a flank surface (22b) that has a depth in a radial direction relative to a corresponding inner diameter surface or outer diameter surface (22a) and separates the corresponding inner or outer diameter surface (22a) throughout the entire width. The inner ring or outer ring (20) having the one peripheral part (22) has a metal ring (24) including a raceway surface (21a), and a resin part (25) covering the metal ring (24). The inner diameter surface or outer diameter surface (22a) included in the one peripheral part (22), the flank surface (22b), and corresponding end surfaces (23) continuous with the one peripheral part (22) are formed by the resin part (25).
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
A control device (70) of a link actuation device (7) comprises a posture calculation means (74), an actuator position calculation means (75), and a teaching data storage means (76). When teaching of a tip end-side link hub (13) is performed via direct teaching, the posture calculation means (74) calculates the posture of the tip end-side link hub (13) by forward transformation from the position of the actuator (10) in a state in which no preloading is applied to the parallel link mechanism (9). On the basis of the posture of the tip end-side link hub (13), the actuator position calculation means (75) calculates the position of the actuator (10) by inverse transformation in a state in which preloading is applied to the parallel link mechanism (9). The teaching data storage means (76) stores, as teaching data, a set of the posture of the tip end-side link hub (13) and the position of the actuator (10) calculated by inverse transformation.
B25J 11/00 - Manipulators not otherwise provided for
F16H 21/48 - Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions for conveying rotary motion
G05B 19/42 - Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine
Provided is a bearing device that is capable of performing data communication over a longer period of time. A bearing device according to the present invention comprises: a bearing body that includes an outer race and an inner race; a power generation unit that generates power through the relative rotation of the inner race and the outer race; a power storage unit that stores power generated by the power generation unit; a voltage detection unit that detects the stored power voltage of the power storage unit; a sensor that detects a status value pertaining to the bearing body and outputs a sensor signal; a data communication unit that transmits, to an external device, data of the sensor signal output from the sensor or internal information based on the stored power voltage; and a control unit that receives input of the stored power voltage from the voltage detection unit and the data and that controls transmission of the internal information, wherein the control unit determines, on the basis of at least one piece of information for determination among the stored power voltage detected by the voltage detection unit, the data from the sensor, data acquired from the external device through communication, and data stored in advance, an operation to transmit the internal information to the external device.
G08C 15/06 - Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
G08C 17/00 - Arrangements for transmitting signals characterised by the use of a wireless electrical link
A sensor (20) detects vibration generated when a rolling bearing (10) is rotated. A diagnosing device (100) includes a preprocessing unit (30), a feature extracting unit (50), and a damage condition diagnosing unit (60). The preprocessing unit (30) generates a vibration waveform by acquiring an output signal of the sensor (20) over a period during which a rotating race (12) rotates a plurality of times. The feature extracting unit (50) extracts a plurality of features from the vibration waveform. The damage condition diagnosing unit (60) diagnoses the damage condition of the rolling bearing (10) on the basis of the plurality of features extracted by the feature extracting unit. The plurality of features include: a peeling length or a non-peeling length in the circumferential direction of the rolling bearing (10); a peeling pass count, which is the number of times each rolling element (13) passes through peeling during the time taken for the rotating race (12) to rotate once; and a variability index indicating variability in the amplitude of the vibration waveform.
In order to provide a bearing device that reduces deformation of a bearing ring and a holder for a sensor, or the like, when fixing the holder to the bearing ring, and that facilitates re-use of the holder, a first bearing ring (4) of a rolling bearing (1) has: a fitting part (4c) for supporting, in a radial direction, a holder (8) which enables installation of a substrate (9a), sensors (9b, 9c), circuits (9d, 9e), and the like; and a step part (4d) for supporting the holder (8) in an axial direction. The fitting part (4c) and the holder (8) are slip fit. At least one permanent magnet (12) for fixing the holder (8) to the first bearing ring (4) under a magnetic attraction force is disposed between the holder (8) and the bearing ring (4).
F16C 19/04 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
Provided is a sintered bearing that is provided with bearing surface parts at two locations on an inner circumferential surface which are separated from each other in the axial direction, that has a relief part between said bearing surface parts whose inner diameter is set to be greater than the inner diameters of the bearing surface parts, and that includes a metal powder and a resin powder. The sintered bearing has a structure in which the metal powder is bonded via the resin powder interposed therebetween. The resin powder is an epoxy resin powder including a thermosetting latent curing agent.
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 7/00 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
F16C 17/02 - Sliding-contact bearings for exclusively rotary movement for radial load only
F16C 33/14 - Special methods of manufactureRunning-in
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
A lubricating oil is contained in a cylindrical sintered body obtained by sintering raw material powder containing a metal material as a main component. One end part in the axial direction is designated as a first bearing part, and other end part in the axial direction is designated as a second bearing part, and a sliding surface is constituted of an inner-diameter surface of the first bearing part and an inner-diameter surface of the second bearing part. In an inner-diameter central portion of the bearing, there is formed an intermediate portion having a relief part which has a diameter larger than the inner-diameter surface of the first bearing part and the inner-diameter surface of the second bearing part. A density difference is provided between the first bearing part, the second bearing part, and the intermediate portion.
Provided is a boot 30 for a constant velocity joint in which a large diameter cylindrical part 31, a small diameter cylindrical part 32, an elastic part 33 that has one valley section 33a curved in an arc shape and that extends from the small diameter cylindrical part 32 toward the large diameter cylindrical part 31, and a connection part 34 connecting the large diameter cylindrical part 31 and the elastic part 33 are integrally molded with a flexible material, and the elastic part 33 is elastically deformed following a relative angular displacement of two joint members 21, 24, wherein the connection part 34 is formed thicker than the elastic part 33.
Provided is a shell type needle roller bearing having rocking durability. In this shell type needle roller bearing (10), a shell-shaped outer ring (1) is made from an austenitic stainless steel material, and the average crystal grain size in a region up to 0.135 mm from a surface of a raceway surface (1d) of the shell-shaped outer ring (1) is 22 μm or less .
An outer joint member 11 includes a cup part 12 in which a track groove with which a roller 19 is engaged is formed on an inner periphery, and a shaft part 13 joined to the cup part 12. The cup part 12 has a bottomed cylindrical shape with one end opened, and includes a cylindrical part, a bottom part, and a solid short shaft part 31 protruding from the bottom part. A solid part 32, which is solid in form, is formed at one end of the shaft part 13. The short shaft part 31 of the cup part 12 and the solid part of the shaft part 13 are joined by friction welding. The core part hardness of the joint part between the short shaft part 31 of the cup part 12 and the solid part of the shaft part 13 is Hv 350 or less at an average value and Hv 390 or less at the maximum value.
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
This rotation transmission device comprises: a non-separation type rolling bearing (3) that supports an inner member (1) and an outer member (2) so as to be rotatable relative to each other; and a case (4) that surrounds the outer member (2) and accommodates a clutch mechanism. The clutch mechanism has: a retainer (7) that holds an engagement element (6) between the outer member (2) and the inner member (1) and moves in a circumferential direction between an engagement position and a release position; an electromagnet (9) attached to the case (4); an armature (10) that is attracted to the electromagnet (9) from a set position where the armature (10) is directly or indirectly supported in an axial direction by the inner member (1) or the outer member (2); and a separation spring (11) that biases the armature (10) toward a direction away from the electromagnet (9). The rotation transmission device further comprises an elastic member (17) that presses, between the case (4) and either one member (2) of the inner member (1) and the outer member (2), the one member (2) in the axial direction, wherein the pressing force in the axial direction based on the elastic repulsion is received by the case (4) from the one member (2) via the rolling bearing (3) and the member (1) different from the one member (2).
F16D 41/08 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
F16D 27/108 - Magnetically-actuated clutchesControl or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members
F16D 41/067 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
A bearing device (10) comprises: a housing (25) that accommodates a main shaft (40) therein; a bearing (50a); a metal lid part (30); and a communication device (71). The bearing (50a) has an inner ring (52a) and an outer ring (51a), and rotatably supports the main shaft (40) with respect to the housing (25). The lid part (30) is fitted to an inner diameter surface of the housing (25) in a state of being in contact with an axial end surface of the housing (25) and an axial end surface of the outer ring (51a). The communication device (71) is disposed in a region facing the lid part (30) with the bearing (50a) therebetween, and performs wireless communication using radio waves. A through-hole (85) penetrating in the axial direction of the main shaft (40) is formed in the lid part (30). The through-hole (85) is provided with a sealing member (80) formed of a non-magnetic material.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 35/07 - Fixing them on the shaft or housing with interposition of an element
F16C 35/12 - Rigid support of bearing unitsHousings, e.g. caps, covers for spindles with ball or roller bearings
22.
DATA GATHERING APPARATUS AND DATA GATHERING SYSTEM
Provided is a data gathering apparatus that makes it possible to efficiently acquire transmission data from a wireless-sensor-equipped bearing. This data gathering apparatus comprises: a first data communication unit that receives and accumulates data transmitted from a wireless device of a wireless-sensor-equipped bearing, and communicates with the wireless device of the wireless-sensor-equipped bearing, the wireless-sensor-equipped bearing having an outer race, an inner race, a generator, a sensor, and the wireless device; a data accumulation unit that accumulates the data; and a control unit that controls operation of the first data communication unit and the data accumulation unit, the control unit having a plurality of data acquisition patterns that can be selected according to the communication state of the wireless device, and acquiring and accumulating data transmitted by the wireless device of the wireless-sensor-equipped bearing in accordance with conditions of acquisition and accumulation of data that are set in advance for a selected data acquisition pattern.
A gripping device (6) according to the present disclosure comprises: a plurality of claw portions (24) for gripping or releasing a workpiece (W); a gripping portion (22) for moving the claw portions (24) in an opening/closing direction; and a rotational transmission mechanism (32) for rotating the workpiece (W) gripped by the claw portions (24) about a rotational axis (X1) parallel to the opening/closing direction. The rotational transmission mechanism (32) includes: rotating portions (34) that are attached to each claw portion (24), move in the opening/closing direction together with the claw portions (24), and can rotate around the rotational axis (X1) relative to the claw portions (24); a second drive source (36) that rotationally drives the rotating portions (34); a power transmission mechanism that is connected to the rotating portions (34), moves in the opening/closing direction together with the rotating portions (34), and transmits power of the second drive source (36) to the rotating portions (34); and an extension/retraction rotation mechanism (37) that can extend and retract in the opening/closing direction and that transmits the rotation of the second drive source (36) to the power transmission mechanism (35).
In the present invention, a sensor mounting member (11) is provided in a secured manner on an axial end face (10) of an outer ring (2), the sensor mounting member (11) having: a cylindrical portion (24) secured with one axial end butted against a position displaced radially inward from the radially outer end of the axial end face (10) of the outer ring (2) so that the radially outer end portion of the axial direction end face (10) is not covered and exposed in an annular shape; and a circular plate (25) extending radially inward from the other axial end of the cylindrical portion (24).
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
F16C 35/07 - Fixing them on the shaft or housing with interposition of an element
Provided is a rolling bearing capable of suppressing ridge marks due to electrolytic corrosion. This rolling bearing 1 has an inner ring 2, an outer ring 3, and a plurality of balls 4 interposed between the inner ring 2 and the outer ring 3, and is lubricated with a grease composition 7, wherein: the oil film parameter Λ in a steady operation state is greater than 3; the grease composition 7 contains a base oil and a phosphorus-based additive; the phosphorus content is at least 0.2 mass% and less than 2.0 mass% with respect to the total amount of the grease composition 7; and the phosphorus-based additive is an aliphatic phosphoric acid ester having a linear or branched alkyl group.
C10M 171/00 - Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well defined but for which the chemical nature is either unspecified or only very vaguely indicated
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 30/12 - Inhibition of corrosion, e.g. anti-rust agents, anti-corrosives
C10N 40/00 - Specified use or application for which the lubricating composition is intended
A deep groove ball bearing includes: an inner ring; an outer ring; balls interposed between the inner ring and the outer ring; and a corrugate steel plate retainer of a rolling element-guided type for retaining the balls. Each of cross sections in a circumferential direction and a radial direction which passes through the deepest portion of a pocket of the corrugate steel plate retainer is an arc-shaped curved surface. A contact point between the pocket and the ball on the cross section in the radial direction of the corrugate steel plate retainer is positioned in a retainer pocket surface. Further, a curvature radius of the retainer pocket surface in the radial direction is equal to or less than a curvature radius of the retainer pocket surface in the circumferential direction.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
27.
METHOD AND DEVICE FOR SORTING AND COLLECTING SAMPLE
This method comprises cutting off a part of a gel sheet (4) on a film (2) to collect a gel sheet portion (4E) inside a collection pin (141). The method also comprises pushing out the gel sheet portion (4E) from the inside of the collection pin (141) through application of pressure to a placement pin (142), and placing the same at a prescribed position outside the collection pin (141). The method further comprises: a first selection step for selecting, by means of an observation optical system, a collection position at which the gel sheet portion (4E) is to be punctured by the collection pin (141); and a second selection step for selecting, by means of the observation optical system, a prescribed position at which the gel sheet portion (4E) is to be placed.
A rolling bearing with a bearing space (3) of which one side in the axial direction communicates with the outside of the bearing, the rolling bearing having: a slinger member (6) formed in an annular shape to cover an annular opening on the other side in the axial direction of the bearing space (3) while leaving an annular oil-passing gap (23) at a radially outer edge of the annular opening on the other side in the axial direction; and a plurality of protrusions (24) formed on an axially inner surface of the slinger member (6) at intervals in the circumferential direction such that an inter-protrusion gap (25) penetrating in the radial direction is formed between adjacent protrusions (24) in the circumferential direction.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
A rolling bearing (3) is disposed between an inner ring (1) and an outer ring (2) of this rotation transmission device. A retainer (6) has a flange part (6a) extending in the radial direction from between a cam ring part (1b) and an inner raceway ring (3a). The cam ring part (1b) has a restriction surface (1e) that receives the flange part (6a) in the axial direction, and a retainer seat surface (1f) that receives the flange part (6a) in the radial direction. A ring-shaped spacer (18) is provided on a non-restriction surface (1e) side of the flange part (6a). The inner ring (1) has a spacer seat surface (1g) that receives the spacer (18) in the radial direction, and the cam ring part (1b) has a step surface (1h) that receives the spacer (18) in the axial direction. The spacer (18) is axially sandwiched between the step surface (1h) and the inner raceway ring (3a). Thus, the axial length of the inner ring (1) is shortened while avoiding interference from the retainer (6) and the outer ring (2).
F16D 41/08 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
A work device (1) comprises: a linear motion mechanism unit (60) which has a linear actuator with two orthogonal axes; a rotation mechanism unit (80) which has a rotation actuator (Ra); and an angle control mechanism unit (7) which has rotation actuators (10) for positioning a work body (E) at angles corresponding to two rotational degrees of freedom. The work device (1) further comprises a control unit (70) that determines the positions and angles of the linear motion mechanism unit (60), the rotation mechanism unit (80), and the angle control mechanism unit (7) and that gives, to each actuator, a movement command. According to the movement command from the control unit (70), work is performed so that the distance between the attachment position of the work body and the work position becomes a specified value. The rotation mechanism unit (80) and/or the angle control mechanism unit (7) is mounted on the linear motion mechanism unit (60) so that, while a certain angle is kept between the rotation axis (C1) of the rotation mechanism unit (80) and the base end-side center axis (QA) of the angle control mechanism unit (7), the relative position between the rotation mechanism unit (80) and the angle control mechanism unit (7) can be changed.
B25J 11/00 - Manipulators not otherwise provided for
F16H 21/54 - Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions for conveying or interconverting oscillating or reciprocating motions
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
A diameter E of a cylindrical surface 5d of a cage 5 is smaller than an apparent maximum outer diameter D1 of an inner joint member 3 when the inner joint member 3 is viewed from the axial direction of the cage 5 in a state where the axis of the inner joint member 3 and the axis of the cage 5 are orthogonal to each other, and two track grooves 90, 91 of the inner joint member 3 having a phase difference of 180 degrees face each other in the diameter direction of the cage 5. Moreover, the diameter E of the cylindrical surface 5d of the cage 5 is larger than an apparent maximum outer diameter D3 of the inner joint member 3 when the inner joint member 3 is viewed from the axial direction of the cage 5 in a state where the axis of the inner joint member 3 is inclined by an angle α with respect to a plane orthogonal to the axis of the cage 5, and two track grooves 90, 91 of the inner joint member 3 having a phase difference of 180 degrees face an inner peripheral surface of the cage 5.
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
A diagnostic device (100) diagnoses a wind-powered electricity generation device (20) comprising a component group (21). A computing device (102) of the diagnostic device (100) uses abnormality information to identify an abnormal component from the component group (21). On the basis of the abnormal component, the computing device (102) generates sensor information indicating a sensor recommended for installation in the wind-powered electricity generation device (20). An interface (106) then outputs the sensor information.
In the present invention, a calculation device (102): identifies, on the basis of a physical quantity, an abnormal value indicating the degree of abnormality of a diagnosis location for each of all diagnosis locations of a plurality of wind power generation devices (20); identifies, among all of the diagnosis locations, a maximum abnormal location in which the abnormal value is a maximum abnormal value; generates abnormality information including the maximum abnormal location; and outputs the abnormality information.
This electrolytic corrosion prevention rolling bearing (A) has an insulating film (2) on the surface of an outer ring (1) which is a bearing ring. The insulating film (2) is formed of an injection-molded resin molded body. An angle θ formed by a virtual straight line connecting one end and the other end of a weld line (3) appearing in the insulating film (2) on the outer diameter surface of the outer ring (1) and a straight line passing through the intermediate point of the virtual straight line and parallel to the rotation axis of the bearing is set to 0° < θ ≤ 60°.
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
A tapered roller bearing of an inner ring guide form according to the present disclosure includes a retainer including: a small-diameter-side annular part; a large-diameter-side annular part; and pillar parts which connect the small-diameter-side annular part and the large-diameter-side annular part. The following relational expression is satisfied by a small-diameter-side gap S1 which is a radial gap between the small-diameter-side annular part and a smaller collar part of an inner ring, a large-diameter-side gap S2 which is a radial gap between the large-diameter-side annular part and a larger collar part of the inner ring, an average roller diameter d of a tapered roller, a roller length 1, and an outer ring angle a. Equations, ΔS=S2 −S1 and S0=0.5 (fixed values), are established.
A tapered roller bearing of an inner ring guide form according to the present disclosure includes a retainer including: a small-diameter-side annular part; a large-diameter-side annular part; and pillar parts which connect the small-diameter-side annular part and the large-diameter-side annular part. The following relational expression is satisfied by a small-diameter-side gap S1 which is a radial gap between the small-diameter-side annular part and a smaller collar part of an inner ring, a large-diameter-side gap S2 which is a radial gap between the large-diameter-side annular part and a larger collar part of the inner ring, an average roller diameter d of a tapered roller, a roller length 1, and an outer ring angle a. Equations, ΔS=S2 −S1 and S0=0.5 (fixed values), are established.
1.06
<
1
tan
α
(
1
-
Δ
S
S
o
d
ℓ
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<
1.64
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
To provide a sealed rolling bearing that is capable of achieving both of low torque performance and high sealing performance. A hub bearing 1 has a seal member 13 that seals a bearing space 9 and is fixed to a fixed side member 12 to be in sliding contact with a rotating side member 15. The seal member 13 has a seal lip that is in sliding contact with the rotating side member 15. Grease is applied to at least one of a sliding contact surface of the seal lip and a sliding contact surface of the rotating side member 15 with which the seal lip is in sliding contact. The grease contains a base oil and a thickener. The kinematic viscosity at 40° C. of the base oil is 6-45 mm2/s. The worked penetration of the grease measured based on JIS K 2220 is 220-320.
A double offset–type constant-velocity universal joint 1 comprises an outside joint member 11, an inside joint member 2, a plurality of balls 16, and a retainer 5. A convex, spherical outside guide surface 6 that contacts and guides a cylindrical inner diameter surface of the outside joint member 11 is provided at an outer diameter surface of the retainer 5, and an inside guide surface 7 that contacts and guides a convex, spherical outer diameter surface 3 of the inside joint member 2 and an inside cylindrical surface 8 that the inside joint member 2 passes during installation of the inside joint member 2 are provided at an interval in the axial direction at an inner diameter surface of the retainer 5. At the convex, spherical outer diameter surface 3, the inside joint member 2 has a clearance surface S at which the radial-direction separation distance from the inside guide surface 7 as opposite in a state in which an operation angle is 0° is greater than the radial-direction separation distance from the inside cylindrical surface 8 as passed during installation at the inside guide surface 7 of the retainer 5.
F16D 3/227 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines of each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic
In the present invention, the outer peripheral surface of a leg shaft 32 has, in a longitudinal cross-section and a transverse cross-section thereof, protruding curves (arcs 33a, 33b) that bulge out toward both sides in the torque transmission direction. The inner circumferential surface 18 of an inner ring 12 comprises: a cylindrical part 18a which is fitted to the outer peripheral surface 33 of the leg shaft 32; and an annular projection 18b which is disposed on the inner side in the joint radial direction of the cylindrical part 18a, protrudes further radially inward as compared to the cylindrical part 18a, and has an inner diameter smaller than the maximum diameter A of the outer peripheral surface of the leg shaft 32. In the protruding curve (arc 33b) in the transverse cross-section of the outer peripheral surface 33 of the leg shaft 32, both ends in the torque transmission direction have a curvature radius (R) smaller than the radius (D/2) of the cylindrical part 18a in the inner peripheral surface 18 of the inner ring 12.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
A motor unit 2 includes: an electric motor 10; a control board 20 arranged along a direction orthogonal to the axial direction of the electric motor 10; and a housing 5 having a motor storage chamber 51, a board storage chamber 52, and a motor cover 55 provided between the storage chambers 51, 52 as a partition wall. An axial pin-shaped terminal 32 connected to a coil 17 is inserted via a terminal insertion hole 55b provided in the motor cover 55 into a terminal insertion hole 21 provided in the control board 20 and thereby electrically connects the coil 17 and the (control unit of the) control board 20. The pin-shaped terminal 32 is held by the motor cover 55 via a terminal holding section 53 for insulating and holding the pin-shaped terminal 32, and an annular elastic seal 37 provided on the outer periphery of the terminal holding section 53.
In this disclosure, a substrate for supplying cells to be cultured is prepared. A first coating liquid application step for applying a first coating liquid (A) containing a first solvent onto the substrate is performed, wherein the application is performed one or more times. A second coating liquid (B) is dropped so as to cover the first coating liquid (A). Cells are included in at least one application from among the one or more times of application of the first coating liquid (A) in the first coating liquid application step. The substrate is a low cell adhesion substrate.
C12N 1/00 - Microorganisms, e.g. protozoaCompositions thereofProcesses of propagating, maintaining or preserving microorganisms or compositions thereofProcesses of preparing or isolating a composition containing a microorganismCulture media therefor
C12M 1/00 - Apparatus for enzymology or microbiology
C12N 5/071 - Vertebrate cells or tissues, e.g. human cells or tissues
A rolling bearing (1) in which a plurality of rolling elements (4) held by a retainer (5) are interposed between an inner ring (2) and an outer ring (3). A first insulating member (6) made of resin has a first cylindrical part (8) fitted to an outer peripheral surface (3b) of the outer ring (3) and a first inner flange part (9) covering one axial end surface of the outer ring (3). A second insulating member (7) made of resin has a second cylindrical part (10) fitted to the outer peripheral surface (3b) of the outer ring (3) and a second inner flange part (11) covering the other axial end surface of the outer ring (3). The first cylindrical part (8) and the second cylindrical part (10) have engaging parts (20) that engage with each other at two positions in the axial direction, with an axial gap therebetween. The engaging parts (20) each are formed from a protruding part (12) extending in the axial direction and a receiving recessed part (13) engaging with the protruding part (12) with an axial engagement gap therebetween.
F16C 35/077 - Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
An inner ring 12 has a cylindrical inner circumferential surface 18. An outer circumferential surface 33 of a leg shaft 32 has convex curves that bulge to respective sides in a torque transmission direction X in longitudinal cross-section and transverse cross-section. The convex curves (circular arcs 33b) in a transverse cross-section of the outer circumferential surface of the leg shaft 32 separate from the inner circumferential surface 18 of the inner ring 12 from the ends in the X direction toward both sides in a Z direction. The radius of curvature r of the convex curves (circular arcs 33a) in a longitudinal cross-section of the outer circumferential surface of the leg shaft 32 is greater than the radius of curvature R of the convex curves (circular arcs 33b) in a transverse cross-section that passes through a maximum diameter part of the outer circumferential surface of the leg shaft 32. A pair of clearance parts 33c are provided on respective sides in the joint axial direction of the outer circumferential surface 33 of the leg shaft 32. When the distance in the joint axial direction between the pair of clearance parts 33c is F and the maximum value of the distance in the joint axial direction between the two vertices of an ellipse of contact formed between the outer circumferential surface 33 of the leg shaft 32 and the inner circumferential surface 18 of the inner ring 12 during torque transmission is Lmax, Lmax
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
The present invention is a tripod constant-velocity universal joint of the double-roller type. The outer peripheral surface of a roller is formed as a cylindrical surface, and a roller guide surface is formed as a flat-surface. As regards the inner ring, the inner peripheral surface thereof is formed as a cylindrical surface, and on the outer peripheral surface of the pod shafts, in both longitudinal cross-section and transverse cross-section, a convex curve is formed bulging out on either side in the torque-transmission direction. The center of curvature of the convex curve in the longitudinal cross-section is at an offset toward the opposite side from the convex curve, and the center of curvature of a convex curved surface in the transverse cross-section is at an offset toward the convex curve. Letting the radius of curvature of the convex curve in the longitudinal cross-section be R, and the radius of curvature of the convex curved surface in the transverse cross-section be r, then R > r. Letting the center-of-curvature offset amount in the longitudinal cross-section be F, letting the left/right inclination angle between the pod shafts and the inner ring be α, and letting the gap between the pod shafts and the inner ring be S, then a mathematical formula 1 holds.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
This tripod constant-velocity universal joint is of a double-roller type. In the present invention, protrusion curves bulging toward both sides in the torque transmission direction are provided on the outer peripheral surface of a leg shaft at a longitudinal section and a transverse section. The center of curvature of the protrusion curve at the longitudinal section is offset toward the opposite side from said protrusion curve. The center of curvature of the protrusion curve surface at the transverse section is offset toward said protrusion curve. When the radius of curvature of the protrusion curve at the longitudinal section is r and the radius of curvature of the protrusion curve surface at the transverse section is R, r>R is satisfied such that the shape of the transverse section of the leg shaft is oval. A tripod member is formed from a body part and the leg shaft which projects in the joint radial direction via a leg shaft neck section smaller than the leg shaft. The shape of the transverse section of the leg shaft neck section is oval. A diameter difference is provided between the outer peripheral portion of the leg shaft neck section and the outer peripheral portion of the leg shaft.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
48.
SLIDING TYPE CONSTANT VELOCITY UNIVERSAL JOINT AND METHOD FOR MANUFACTURING SAME
This method includes performing gentle injection processing (shot blasting) on at least one surface among a cylindrical inner peripheral surface 6 of an outer joint member 2 of a double offset type constant velocity universal joint 1, a surface of a track groove 7 of the outer joint member 2, a spherical outer peripheral surface 8 of an inner joint member 3, a surface of a track groove 9 of the inner joint member 3, a spherical surface part 13 of an outer peripheral surface of a cage 5, and a spherical surface part 15 of an inner peripheral surface of the cage 5 such that a forged surface, a rolled surface or a machined surface remains at a bottom part 22 of a valley part of a roughness curve.
F16D 3/227 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines of each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic
Provided are: a grease composition capable of preventing grease leakage and suppressing heat generation inside a bearing even under a high-speed rotation condition; and a grease-sealed bearing in which the grease composition is enclosed. A grease composition 7 is enclosed in a rolling bearing 1 and comprises a base oil and a thickener, wherein: the base oil has a kinematic viscosity at 40°C of less than 40 mm2/s; the maximum storage elastic modulus at a temperature of 25°C and a frequency of 1 Hz is 10000-50000 Pa; the thickener is a urea compound or barium soap; and the content of the thickener with respect to the total amount of the base oil and the thickener is 5-30% by mass.
C10M 169/02 - Mixtures of base-materials and thickeners
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
C10M 115/00 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
C10M 115/08 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated semi-solidForm in which the lubricant is applied to the material being lubricated greasy
Provided is an electric motor device with which space saving and cost reduction are achieved and also stable braking can be performed. An axial gap type electric motor device (DM) comprises: a housing (3); a stator (4) supported by the housing (3); and a rotor (5) rotatably supported by the housing (3) and rotating facing the stator (4) in the axial direction (C1). The rotor (5) includes: a main shaft (9) rotatably supported by the housing (3) and the stator (4); and a field mechanism (8) rotatably synchronized with the main shaft (9) and slidably provided in the axial direction (C1). The electric motor device is provided with a field mechanism restricting means (7) that, when the field mechanism (8) is slid in the axial direction (C1), brakes the rotation of the rotor (5) by the frictional force acting on a contact surface formed by the field mechanism (8) being brought into contact with the housing (3) or the stator (4) and restricts the axial position of the field mechanism (8).
H02K 7/102 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
H02K 16/04 - Machines with one rotor and two stators
H02K 21/24 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
Provided is a ball bearing that used in liquefied gas and comprises: a pair of bearing rings composed of an inner ring and an outer ring; a plurality of balls interposed between the raceway surfaces of the pair of bearing rings; and a retainer for holding the plurality of balls between the pair of bearing rings. The retainer is an inner ring–guided retainer, wherein the retainer rotates as a result of causing the inner radial surface of the retainer and the outer radial surface of the inner ring to slidably contact each other with a predetermined radial gap therebetween, and the guide gap between the outer radial surface of the inner ring and the inner radial surface of the retainer is 3-10% of the diameter of a ball.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
52.
LUBRICANT SUPPLY UNIT, BEARING DEVICE, AND MECHANICAL DEVICE
A lubricant supply unit (104) capable of extending bearing lubrication life comprises: a tank (125) in which lubricant (126) is accommodated; a pump (130); and a supply path member (140) which fluidically communicates with the pump (130). The pump (130) supplies the lubricant (126) from the tank (125) to the supply path member (140). The supply path member (140) is located at the lowermost part of the lubricant supply unit (104). The supply path member (140) includes: an inflow port (144) that is connected to the pump (130); a discharge port (145) that faces the interior of a bearing (102) to which the lubricant supply unit (104) is attached and that discharges the lubricant (126) to the interior of the bearing (102); and a discharge path (146) that is connected to the discharge port (145) and that extends upward.
F16N 7/38 - Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pumpCentral lubrication systems
B05B 1/00 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
F16N 9/02 - Arrangements for supplying oil or unspecified lubricant from a moving reservoir or the equivalent with reservoir on or in a rotary member
F16N 11/00 - Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricatedGrease cups
F16N 13/10 - Actuation of lubricating-pumps with mechanical drive
F16N 29/02 - Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditionsUse of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
F16N 39/02 - Arrangements for conditioning of lubricants in the lubricating system by cooling
F16N 39/04 - Arrangements for conditioning of lubricants in the lubricating system by heating
Provided is a tapered roller bearing in which an inner ring assembly is integrated by a connector such as a wire and a connector can be removed after incorporating a bearing, and the tapered roller bearing can realize a roller guide. The tapered roller bearing removably includes a falling-off preventer to prevent a tapered roller contained in a pocket having a first guide claw extending toward an inner diameter side of a retainer segment from falling off toward the outer diameter side. The falling-off preventer is engaged with an outer diameter surface and a large-diameter-side lateral-surface of a large-diameter-side arc-shaped portion of the retainer segment. The retainer segment and the falling-off preventer are connected with the connector.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
A recirculating toilet unit (1) according to the present disclosure comprises a recirculating toilet (2), and a structure (4) in which the recirculating toilet (2) is accommodated. The recirculating toilet (2) has a toilet bowl (5), and purification equipment (6) that purifies wastewater discharged from the toilet bowl (5) to produce flush water used to clean the toilet bowl (5). The recirculating toilet unit (1) comprises: a detection unit (38) that detects the inflow amount of water into the purification equipment (6) and the evaporation amount of water from the purification equipment (6); a determination unit (40) that determines the amount of water in the purification facility (6) from the output of the detection unit (38); and an adjustment unit (42) that adjusts the amount of water in the purification equipment (6) from the output of the determination unit (40). The adjustment unit (42) has a water replenishment means (60) capable of supplying water to the purification equipment (6) if the determination unit (40) determines that the amount of water in the purification equipment (6) is insufficient.
A ball bearing includes rivets each including a columnar rivet shaft; a pre-formed head formed beforehand at one end of the rivet shaft; and a crimped head formed by crimping the other end of the rivet shaft. The crimped head of each rivet is formed to satisfy the following formula: 1.25×Vo
F16C 33/42 - Ball cages made from wire or sheet-metal strips
F16B 5/04 - Joining sheets or plates to one another or to strips or bars parallel to them by means of riveting
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
A ball screw device includes a nut including a nut main body and a cover, a screw shaft, a rolling path formed by a screw groove of the nut main body and a screw groove of the screw shaft, a circulation path formed by an outer circumferential surface of the nut main body and the cover, a pair of connection paths that allow one end of the circulation path and one end of the rolling path to be communicated with each other and allow the other end of the circulation path and the other end of the rolling path to be communicated with each other, respectively, and a large number of balls disposed in the rolling path, the circulation path, and the pair of connection paths. The circulation path is formed along a cylindrical path of the outer circumferential surface of the nut main body.
Individual foils 12 of a radial foil bearing 10 include a top foil part 12a having a bearing surface S facing a rotary member 6, and an under-foil part 12c provided on the top foil part 12a and arranged overlapping the side of an adjacent foil opposite to the bearing surface S of the top foil part 12a. The under-foil part 12c has a plurality of opening parts 13a.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
According to the present invention, the axial thickness a (mm) of an inter-pocket region (17) of a retainer ring (11) satisfies a < c with respect to the axial distance c (mm) from the lateral surface (19) on one side of the retainer ring (11) in the axial direction to the center O of a ball (5), and provided that dm (mm) is the pitch circle diameter of balls (5), Z (number of entities) is the number of balls (5), and Da (mm) is the diameter of a ball (5), the ball-to-ball circumference ratio r, defined by r = (dm × π / Z) / Da, is set to a magnitude between 2.6 and 11.4 inclusive.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
In a bearing sleeve 8 (fluid dynamic bearing) including a cylindrical sintered body formed with dynamic pressure generating grooves G1 on an inner peripheral surface 8a, a ratio D2/D1 of an outer diameter D2 to an inner diameter D1 of the sintered body is 2.5 or less, and differences in relative density among three parts 8A, 8B, 8C defined by trisecting the sintered body in an axial direction are within 3%.
The prevent invention relates to improving the precision of a roller guide surface of a column in a turned cage provided in a cylindrical roller bearing, and the outer diameter of the cage. A column (32) that partitions between rings (31) on both sides of a cage (30) has: a roller guide surface (32a) that is in contact, in the circumferential direction, with a cylindrical roller (20) rolling on a raceway surface (11); a fall stopper (32b) that restricts falling of the cylindrical roller (20) at a position different from the roller guide surface (32a) in the axial direction; an outer groove (32d) turned to a smaller diameter than the outer diameter of the ring (31); and an inner recessed surface (32f) turned to a larger diameter than the inner diameter of the ring (31). The fall stopper (32b) is continuous with the outer groove (32d) in the circumferential direction, and the inner recessed surface (32f) is located at a position intersecting the roller guide surface (32a) in the circumferential direction.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
F16C 19/46 - Needle bearings with one row of needles
In a state where a joint forms a normal operating angle and an axial line of an inner ring is not tilted with respect to an axial line of a leg shaft, when a curvature radius and a minor axis/major axis ratio at which a contact area between an inner ring inner peripheral surface and a leg shaft outer peripheral surface is minimized are set as respective reference values, the minor axis/major axis ratio is set to the reference value, and the curvature radius is set to be smaller than the reference value. In addition, a carbon content in a core portion of a tripod member is set to 0.23 to 0.44%, and a hardened layer is formed through carburizing and quenching on a surface of each leg shaft.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
F16D 3/202 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
63.
BEARING DEVICE, SPINDLE DEVICE PROVIDED WITH SAME, LOAD ESTIMATION METHOD, PROGRAM, LOAD SENSOR CALIBRATION METHOD, AND PROCESSING LOAD CALCULATION METHOD
A bearing device (1) rotatably supports a main shaft (2) that processes a workpiece through rotational driving. The bearing device (1) is provided with a load sensor (71), storage (103), and a processor (101). The load sensor (71) outputs a signal that indicates a detection value of a load applied to the bearing device (1). The storage (103) has stored therein a correspondence map (93) between rotational velocities of the main shaft (2) and detection values of the load sensor (71) when no workpiece is being processed. The processor (11), on the basis of the signal from the load sensor (71), estimates a processing load to be applied to the bearing device (1) when the workpiece is being processed. If the rotational velocity of the main shaft (2) has been controlled to a prescribed velocity, the processor (101): acquires a first load indicated by the signal from the load sensor (71), and a second load which is a detection value of the load sensor (71) corresponding to the prescribed velocity in the correspondence map (93); and estimates the difference between the first load and the second load as the processing load.
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
B23B 19/02 - Working-spindlesFeatures relating thereto, e.g. supporting arrangements
B23Q 17/00 - Arrangements for indicating or measuring on machine tools
A base R section (20) is formed on the axial inner side of the base of a roller stopper piece (10). An inner diameter-side R section (19) is formed at a portion where the radial inner-side surface (17) of a pillar-inclined part (8) and the radial inner-side surface (18) of a pillar edge section (7) intersect. The base R section (20) is formed at a position offset axially outward from the inner diameter-side R section (19) such that the axial range of the base R section (20) and the axial range of the inner diameter-side R section (19) do not overlap.
F16C 33/54 - Cages for rollers or needles made from wire, strips, or sheet metal
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
F16H 1/28 - Toothed gearings for conveying rotary motion with gears having orbital motion
65.
STATE MONITORING DEVICE, NACELLE MONITORING DEVICE, MONITORING SYSTEM, AND MONITORING METHOD
In the present invention, a state monitoring device (200) acquires, from a first vibration sensor (111), a second vibration sensor (112), and a third vibration sensor (113), a vibration value for a first blade (101), a vibration value for a second blade (102), and a vibration value for a third blade (103), respectively. When the absolute values for the vibration value for the first blade (101), the vibration value for the second blade (102), and the vibration value for the third blade (103) all exceed a first threshold value, the state monitoring device (200) detects a lightning strike on a wind power generation device.
This rolling bearing comprises an annular retainer (1A) for rotatably holding a rolling element such as a roller (4). The retainer (1A) is provided such that: the arithmetic average roughness (Ra) of one or more retainer surfaces selected from an outer diameter surface (1a), an inner diameter surface (1b), and a width surface (1c) of the retainer (1A), and an inner surface (5a) of a rolling element holding pocket (5) penetrating in the radial direction is 2 μm ≤ Ra ≤ 20 μm; and the root mean square inclination (RΔq) of a roughness curve of the retainer surface is 10° ≤ RΔq ≤ 40°.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
A rolling bearing includes: inner and outer rings; a plurality of balls; a retainer configured to retain the plurality of balls; and a seal member attached to the outer ring and configured to close a bearing space between the inner ring and the outer ring. The seal member is a contact seal including a lip configured to come into contact with the seal groove. The seal groove has an outer groove wall surface which is an inclined surface which is inclined toward an outer diametric side as the inclined surface extends outward in an axial direction. The lip has a tip end part having a round shape so that the tip end part contacts the outer groove wall surface of the seal groove at from 80 to 100°. The outer groove wall surface has an inclination angle of from 55 to 65° with respect to the axial direction.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
In the present invention, a dynamic pressure generation part has a plurality of dynamic pressure grooves arranged in a herringbone pattern, and the dynamic pressure grooves include first and second groups of dynamic pressure grooves. Each of the first and second groups of dynamic pressure grooves is provided with inclined ridge parts having an inclined shape formed between the dynamic pressure grooves. An annular ridge part connected to each inclined ridge part and extending in the circumferential direction is provided between the first and second groups of dynamic pressure grooves. A recess for generating dynamic pressure is formed in a partial area of the annular ridge part.
F16C 17/02 - Sliding-contact bearings for exclusively rotary movement for radial load only
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
A mechanical component has a surface and is made of steel subjected to quenching and tempering. The mechanical component includes a nitrided layer formed at the surface. Steel contains at least 0.95 mass % and at most 1.10 mass % of carbon, less than 0.30 mass % of silicon, less than 0.50 mass % of manganese, less than 0.0080 mass % of sulfur, at least 1.3 mass % and at most 1.6 mass % of chromium, and a remainder composed of iron and an inevitable impurity. An average nitrogen concentration at the surface is equal to or more than 0.10 mass %. A hardness at the surface is equal to or more than 850 Hv. An amount of retained austenite at the surface is equal to or less than 20 volume %.
Provided are a sliding nut of a sliding screw device and a sliding screw device that have excellent sliding characteristics such as seizure resistance and abrasion resistance even under a high load condition while enabling cost reduction. In a sliding screw device, along with rotation of a screw shaft, a sliding nut 3 relatively moves while sliding on the shaft of the screw shaft. The sliding nut 3 comprises a metal outer ring 4 made of metal, and a resin inner ring 5 that is integrally provided on an inner peripheral part of the metal outer ring 4. An interface of the metal outer ring 4 with the resin inner ring 5 is a cylindrical surface. The resin inner ring 5 is formed with a female thread that is screwed with the screw shaft. The thickness from a threading groove bottom 5b of the female thread to the cylindrical surface of the metal outer ring 4 is greater than or equal to 0.1 mm and less than 1.0 mm. At least the cylindrical surface of the metal outer ring 4 is an etched surface, and a resin of the resin inner ring 5 is impregnated into fine irregularities on the surface.
A bearing device includes a bearing and a retaining member. The retaining member is fixed to any one ring of an outer ring and an inner ring. A circuit board is fixed to, in an axial direction, a front surface of a side plate portion. At least one gas sensor, which detects a state of the bearing, and a wireless communication circuit, which wirelessly transmits an output of the gas sensor to outside, are mounted on the circuit board.
This sintered alloy bearing is obtained by compressing a raw-material powder to form a green compact and sintering the green compact. A sintered alloy contains 1.0-5.0 wt. % of Cu, 0.4-2. 0 wt. % of Sn, and 0 wt. % or 0.3-3.0 wt. % of C as free carbon, with the balance consisting of Fe and unavoidable impurities. An iron structure is formed of an iron powder and is configured so that a ferrite structure has an area ratio of 90% or more.
A diagnosis device (100) stores a first database (141) for storing correspondence information in which a combination of the characteristics of waveform data pertaining to a wind power generation device (20) and attribute information pertaining to the wind power generation device (20), and a diagnosis result relating to an abnormality in the wind power generation device (20) and maintenance-type diagnosis information pertaining to the wind power generation device (20), are associated with each other. The diagnosis device (100) identifies the diagnosis information on the basis of an acquisition parameter and acquisition attribute information by using the first database (141), and outputs the diagnosis information to a user terminal (50).
In a fixed type constant velocity universal joint 1 having eight balls rotationally driven by an electric motor, grease G having an initial consistency of consistency number 1 to 2 and mixing stability of 390 to 440 is used. An initial pocket gap δ represented by a difference (H−DBALL) between an axial width H of a pocket 5a and a diameter DBALL of a torque transmitting ball 4 is set to −21 μm or more and −6 μm or less.
F16D 3/2245 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines of each coupling part lying on a sphere where the groove centres are offset from the joint centre
Provided is a shaft seal having a substantially U-shaped cross section, wherein occurrence of cracks in a molded body from a gate mark as a starting point is prevented even when a high surface pressure (about 10 MPa maximum) is applied to a substantially U-shaped inner surface. A shaft seal 1 is an annular shaft seal that is closely attached to an outer peripheral surface of a rotary shaft to seal a high-pressure sealed fluid, the shaft seal 1 being an injection molded body having a substantially U-shaped cross section in an axial direction. The shaft seal 1 comprises: a seal lip part 2 that extends to one side in the axial direction and slides with the rotary shaft; a fixed part 3 provided radially outward of the seal lip part 2; and a base end part 4 connecting the seal lip part 2 and the fixed part 3. The shaft seal 1 does not have a gate mark g of injection molding on a substantially U-shaped inner surface A, and has a gate mark g on a substantially U-shaped outer surface B.
F16J 15/3236 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
To provide a rolling bearing cage that is superior in heat resistance and realizes superior moldability even in a case in which the cage has a thick wall, and a rolling bearing using the cage. A cage 5 is an annular rolling bearing cage formed by injection-molding a resin composition. The rolling bearing cage 5 includes rolling elements and a plurality of pockets 6 for retaining the rolling elements. A thickness in a radial direction of an axial end surface 5a of the cage 5 is 2.00 mm or more. The resin composition contains polyamide resin as a base resin. The polyamide resin is copolymerized polyamide containing a hexamethylene terephthalamide unit and a hexamethylene adipamide unit as a constitutional unit.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
A ring body configured to be fitted over the extension ring portion is provided. The ring body is a non-endless ring body having a cut portion formed in a part of the ring body. Opposed cut-portion end surfaces of the cut portion are separated from each other by a predetermined distance under a state in which the ring body is press-fitted over the extension ring portion of the inner ring. The cut-portion end surfaces are brought relatively closer to each other to radially contract the ring body by fastening a fastening member to be mounted into the ring body so that a radially contracting force for radial contraction is applied to the extension ring portion to bring the extension ring portion into close contact with the rotary shaft.
F16C 35/073 - Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
The objective of the present invention is to set mechanical properties such as rolling fatigue life and rigidity within appropriate ranges, and also reduce torque and weight. An outer diameter a at an inner side end of an outer ring (2) and an axial distance b between a flange surface (3k) of a hub flange (3b) and an inner side end surface (4b) of an inner ring (4) satisfy the relationship: (a/b) > 1.2, and a pitch circle diameter PCDo of balls 7 constituting an outer-side ball row (6) and a pitch circle diameter PCDi of balls 7 constituting an inner-side ball row satisfy the relationship: PCDo < PCDi.
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
B60B 35/18 - Torque-transmitting axles characterised by the arrangement of the bearings for the torque transmitting elements in the axle housings
The circuit board includes: at least one sensor that detects a state of the standard bearing; a wireless communication circuit; and a power supply circuit that converts the AC power generated by the generator into DC power. The magnetic ring, the stator, and the circuit board are disposed inside an annular space formed by an end portion of the outer ring and an end portion of the inner ring.
Provided is a tapered roller bearing which includes an inner ring including a collar part, an outer member having an annular rolling surface in opposition to a rolling surface of the inner ring, tapered rollers interposed between the inner ring and the outer member, and a retainer configured to be guided by the inner ring, retaining the tapered rollers, and including small- and large-diameter-side annular parts, and pillars connecting the small- and large-diameter-side annular parts at more than one circumferential location. At least one of the small-or large-diameter-side annular parts includes an arcuate bent part from the pillars and a flanged part extending radially inwards from the bent part. The bearing satisfies the inequalities 0.50018<(d1/d2)/2<0.5049; and 0.50018<(d1/d2)/2<0.5056X(−00.002) involving the inner diameter of the flanged part d1, the outer diameter of the collar part of the inner ring d2, and the centrifugal acceleration of the revolution of the bearing X.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
In inspecting the number of balls 30 disposed in circulation paths S1 to S3 of a ball screw device 1, an inspection jig 40 is inserted between the balls 30 disposed in the circulation paths S1 to S3 from a gap between a nut 10 and a screw shaft 20, and the number of the balls 30 is inspected by an insertion state of the inspection jig 40 at this time.
A crown-shaped cage resin entirely formed of a resin material is provided. The steel ball diameter D of each steel ball received in a respective one of pockets is 13 to 18 mm. The wall thickness t of the cage from the bottom of each pocket to the end surface of an annular portion on the other axial side is 10 to 20% of the steel ball diameter D. The axial length HB of each claw of each horn portion is 60 to 80% of the steel ball diameter D. When the tensile strength of the resin material is denoted by σ, the cross-sectional area A of a portion of the cage between each circumferentially adjacent pair of pockets is set within the range of the following formula: A>(511D-4027)/σ.
One of a pair of seal members (7, 8) is an outer ring fixed seal member (7) fixed to the inner periphery of an outer ring (2), the other is an inner ring fixed seal member (8) fixed to the outer periphery of an inner ring (3); an oil supply gap (23) for introducing a lubricant supplied from the outside of a bearing into a bearing space (4) is formed between the inner periphery of the outer ring fixed seal member (7) and the outer periphery of the inner ring (3); and an oil discharge gap (29) for discharging the lubricant from the bearing space (4) is formed between the outer periphery of the inner ring fixed seal member (8) and the inner periphery of the outer ring (2).
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
An angular ball bearing (1) comprises: an inner ring (2); an outer ring (3); a plurality of balls (4); and a holder (5). The holder (5) has a small annular part (6) that is positioned between a counter bore part (2b) of the inner ring (2) and a shoulder part (3d) of the outer ring (3) in the radial direction, a large annular part (7) that is positioned between a counter bore part (3d) of the outer ring (3) and a shoulder part (2d) of the inner ring (2) in the radial direction, and columns (8) that are provided at a plurality of places in the circumferential direction and connect the small annular part (6) and the large annular part (7). A pocket (Pt) for holding the balls (4) is formed by the small annular part (6), the large annular part (7), and the columns (8). When the thickness of the small annular part (6) in the radial direction is denoted by (T1), the thickness of the large annular part (7) in the radial direction is denoted by (T2), and the diameter of each of the balls (4) is denoted by (Da), 0.170≤T1/Da≤0.280, 0.170≤T2/Da≤ 0.280, and 0.90≤T1/T2≤0.10 are satisfied.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
An energization unit (1) is configured to have an electroconductive annular case body (2) in which a circumferential groove that opens on the inner diameter side is formed, an electroconductive energization member (3) that is provided in the circumferential groove and that protrudes radially inward from the case body (2), and a radial elastic member (4) that is provided in the circumferential groove and that urges the energization member (3) radially inward.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 35/06 - Mounting of ball or roller bearingsFixing them onto shaft or in housing
F16C 35/077 - Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
Provided is a vibration-type component transport device in which intermediate vibrating bodies (3a, 3b) are disposed on the lower side of a base (1), horizontal vibrating plate springs (6a, 6b) are disposed so as to extend in the vertical direction while avoiding the base (1), the upper ends of the horizontal vibrating plate springs (6a, 6b) are fixed to an upper vibrating body (4), and the lower ends of the horizontal vibrating plate springs (6a, 6b) are fixed to the intermediate vibrating bodies (3a, 3b).
A detection unit acquires detection data of a wind turbine generator. A controller generates maintenance information of the wind turbine generator based on the detection data. The controller transmits maintenance information to a maintenance terminal.
A plunging-type constant velocity universal joint includes outer and inner joint members having linear track grooves, balls, and a cage accommodating the balls in pockets. Curvature centers of spherical outer and inner peripheral surfaces of the cage are offset toward opposite sides with respect to a joint center. A range between distances of 10 mm towards deep and opening sides from a center portion of a sliding range of the track groove of the outer member in the axial direction is a center range, and a region in which a PCD of the track grooves of the outer member becomes smallest is in the center range. A minimum value of a PCD clearance in the track grooves in the center range is from 0.010 mm to 0.100 mm. A PCD mutual difference of the track grooves of the outer member in the center range is 0.150 mm or less.
F16D 3/227 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines of each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
89.
RIGID-FILM-COATED OBJECT, MACHINE COMPONENT, AND BEARING
Provided is a rigid-film-coated object, a machine component using the same, and a bearing, in which hydrogen embrittlement resistance and wear resistance are improved and sufficient strength is ensured. This rigid-film-coated object 1 has, on the surface of a base material 2, a rigid film 3 that suppresses the penetration/diffusion of hydrogen atoms. The base material 2 is made of martensitic stainless steel or martensitic precipitation hardening stainless steel and has a surface Vickers hardness of 500 Hv to 1,000 Hv. The Vickers hardness of the rigid film 3 is at least 0.9 times that of the base material 2 and is 3,000 Hv or less, and the rigid film 3 is a Ni film.
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C23C 18/32 - Coating with one of iron, cobalt or nickelCoating with mixtures of phosphorus or boron with one of these metals
C25D 5/26 - Electroplating of metal surfaces to which a coating cannot readily be applied of iron or steel surfaces
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
Each second rivet hole has an inner periphery constituted by a cylindrical shear surface having a constant inner diameter that does not axially change; and a tapered fracture surface gradually radially expanding from the shear surface toward an abutment surface.
F16C 33/42 - Ball cages made from wire or sheet-metal strips
B21D 53/12 - Making other particular articles parts of bearingsMaking other particular articles sleevesMaking other particular articles valve seats or the like cages for bearings
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
Provided is a cage for a deep groove ball bearing, the cage being hard to be broken even under a high-speed rotating environment of an electric vehicle speed reducer and a motor that are used in an environment where a dmn value is 850,000 or more, as in an electric vehicle. The deep groove ball bearing includes the resin cage containing, as a reinforcement material, glass fibers, carbon fibers, or both. The reinforcement material has a number-average fiber length of 100 to 600 μm and a number-average fiber diameter of φ4 to φ18 μm.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
In a tripod type constant velocity universal joint of a double roller type, a projection 40 is provided in regions including both end portions in a direction orthogonal to a joint axial line O on a shaft end side with respect to an inner ring 12 on an outer peripheral surface of a leg shaft 32 of a tripod member 3. A ratio T/ag1 between a dimension T in a direction of the joint axial line O of the projection 40 and a major diameter ag1 of a contact portion with the inner ring on the outer peripheral surface of the leg shaft 32 is 0.3 or more.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
This retainer-equipped roller comprises a plurality of rollers and a retainer (2) for holding the rollers. The retainer (2) comprises: a pair of ring members (4) that face either end of each roller in the axial direction; and a plurality of column parts (5) that are installed so as to span across the outer diameter parts of the pair of ring members (4) and that are provided at regular intervals in the circumferential direction such that the rollers can enter. The inner diameter part of each ring member (4) is provided with a roller holding claw (6) which prevents the roller from slipping out to the inner diameter side of the retainer. A retainer radial direction chamfer length (B) satisfies the following relationship with respect to the retainer wall thickness (A). 0 < B/A ≤ 1.6
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
The purpose of this invention is to suppress occurrence of stick slip at a contact part between a hub wheel and a constant-velocity universal joint while maintaining strength of a caulking part in a wheel bearing device. A wheel bearing device 1 includes: an outer member (outer ring 2) having an outer raceway groove 2c·2d; an inner member which comprises a hub ring 3 and an inner ring 4 provided in a small-diameter step part 3a of the hub ring 3, in which a caulking part 3h is formed at an inner-side end part of the small-diameter step part 3a to integrate the hub ring 3 and the inner ring 4, and which has an inner raceway groove 3c·4a; rolling elements (balls 7) accommodated between the outer raceway groove 2c·2d and the inner raceway groove 3c·4a; and a constant-velocity universal joint 20 connected to the hub ring 3. The hub ring 3 has a flat part 3i abutting on an outer-side end surface of a shoulder part 23 of the constant-velocity universal joint 20, the flat part 3i protrudes from an inner-side end part of the caulking part 3h to the inner side, and the outer diameter of the flat part 3i is positioned radially inside of the inner diameter of the inner ring 4.
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axlesCouplings between axle parts or sections
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
The purpose of the present invention is to ensure the suppression of the axial movement of a slinger and sealability without the need for an additional processing step, to maintain bearing performance over a long period of time. Provided is a wheel bearing device comprising: an internal member which is provided with an outer ring 2 that has, on the inner circumference thereof, double-row outer raceway surfaces 2a, 2a, a hub ring 3 that has, on the outer circumference thereof, one inner raceway surface 3d opposite to the outer raceway surface 2a and a wheel attachment flange 3b, and an inner ring 4 that is connected to the hub ring 3 and that has, on the outer circumference thereof, another inner raceway surface 4a opposite to the outer raceway surface 2a; double-row rolling elements 5 which are housed between both raceway surfaces so as to be able to roll; and an inner side seal member 6 and an outer side seal member 7 which provide sealing between the outer ring 2 and the hub ring 3 and the inner ring 4, wherein the outer side seal member 7 has an annular slinger 17 that is engaged with the hub ring 3, and the slinger 17 is provided with a protrusion 17e which is formed of an elastic member.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
A wheel bearing device capable of improving indentation resistance at the outer side of an outer member by reducing a quenching crack and deterioration in crystal grain size as much as possible. The outer member (outer ring (2)) is to have an inner-side induction-hardened part (9a) formed by means of induction hardening along an inner-side outer raceway surface (2g) and an outer-side induction-hardened part (9b) formed by means of induction hardening along an outer-side outer raceway surface (2h), wherein the outer-side induction-hardened part (9b) has a deeper hardened layer depth (D) than the hardened layer depth E of the inner-side induction-hardened part (9a), and the inner-side induction-hardened part (9a) and the outer-side induction-hardened part (9b) are separated from each other.
F16C 19/18 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
Provided is a rolling bearing that comprises a cage and is capable of stabilizing the behavior of the cage, reducing wear, and the like. The cage (6) of the rolling bearing has two annular bodies (10, 10) overlapping each other in the axial direction. Each annular body (10) has a plurality of pocket wall portions (13) arranged at regular intervals in the circumferential direction and each constituting the inner wall surface of a pocket, and a plurality of connecting plate portions (14) connecting the pocket wall portions (13) adjacent in the circumferential direction. The two annular bodies (10, 10) are overlapped and joined to each other at the connecting plate portions (14). Each pocket (12) comprises, at both ends thereof in the circumferential direction, contact portions (P) which come into contact with a ball at a plurality of points so as to be separated from the ball in the cage axial direction (C1).
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
A clutch unit 10 includes an input-side clutch part 11 for controlling transmission and cutoff of inputted rotational torque, and an output-side clutch part 12 for transmitting rotational torque inputted from the input-side clutch part 11 to an output side and cutting off rotational torque reversely inputted from the output side. The output-side clutch part 12 includes a stationary member 23 of which rotation is restrained, an output member 22 for outputting rotational torque, a plurality of engagement elements 27 arranged in a wedge gap between the stationary member 23 and the output member 22, an elastic member for urging the engagement elements to a narrow side of the wedge gap, and grease filled between the stationary member 23 and the output member 22. The grease contains a calcium sulfonate thickener.
F16D 41/10 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
B60N 2/16 - Seats specially adapted for vehiclesArrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
C10M 135/10 - Sulfonic acids or derivatives thereof
F16D 41/06 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
The structural body unit (UN) comprises a plurality of structural bodies (2) that are configured to be movable and that include a top wall (2a), a bottom wall (2b), and a peripheral wall (2c), wherein a space (SP) is provided inside each structural unit (2). The structural body unit (UN) further comprises a joint housing (20) that is disposed between two of the structural bodies (2) to connect the two structural bodies (2) together. The joint housing (20) includes: a housing main body (22) having a shape in a plannar view that is a square matching short sides of the structural bodies (2); and an opening portion (24) that are formed in a peripheral wall (22c) of the housing main body (22) with a prescribed size. The structural body unit (UN) is configured such that a person can move among the spaces (SP) of the adjacent structural bodies (2) via the opening portions (24).
E04B 1/348 - Structures composed of units comprising at least considerable parts of two sides of a room, e.g. box-like or cell-like units closed or in skeleton form
E04B 1/343 - Structures characterised by movable, separable, or collapsible parts, e.g. for transport
E04H 1/12 - Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
Provided are a cage for a rolling bearing capable of satisfying different required characteristics while securing cage strength, and a rolling bearing using the cage. A cage 5 holds a plurality of balls 4 in a rolling bearing 1, is guided by an outer ring 3, and includes: cage bodies 8 and 11 having an annular shape and including a pocket hole for accommodating each of the balls 4; a resin portion 9 formed at least in a portion on which each of the balls 4 slides in an inner surface of the pocket hole of the cage body 8; and a resin portion 12 having a composition different from that of the resin portion 9 and formed in a guide portion of the cage body 11 sliding on the outer ring 3.
