This solid lubricant-filled shell-type needle roller bearing has a shell-type outer ring (2), a plurality of needle rollers (3), and a solid lubricant (4), the plurality of needle rollers (3) being held by the solid lubricant (4). A plate thickness removal part (8) is provided over the entire circumference between the axial inner surface of a first flange part (6) and the radial inner end surface, and a first protruding solidification part (4f) extending outward in the axial direction toward the plate thickness removal part (8) is formed on the entire circumference of a first annular solidification part (4a) of the solid lubricant (4) formed between the first flange part (6) and an end surface (3a) of the needle rollers (3).
Provided is a solid-lubricant-filled shell-type needle roller bearing comprising a shell-type outer raceway (1), a plurality of needle rollers (2), and a solid lubricant (3), the plurality of needle rollers (2) being held by the solid lubricant (3). A curved recess (10) that has a concave cross section recessed in the axial direction is formed in a side surface of a second flange part (6) on the side thereof filled with the solid lubricant (3).
Provided are a grease composition and a grease-filled bearing that prevent electrolytic corrosion and have excellent noise reduction and wear resistance. A rolling bearing 1 is a grease-filled bearing in which a plurality of balls 4 are held between raceway surfaces 2a, 3a of an inner ring 2 and an outer ring 3, and in which a grease composition 7 is filled between the raceway surfaces 2a, 3a. The grease composition 7 includes a base oil, a thickening agent, a metal powder having a melting point of 800℃ or higher, and an ionic liquid. In particular, the metal powder is a copper powder, and the ionic liquid includes the elements phosphorus (P) and sulfur (S).
C10M 141/10 - Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups , each of these compounds being essential at least one of them being an organic phosphorus-containing compound
C10M 137/14 - Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond containing sulfur
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 30/06 - OilinessFilm-strengthAnti-wearResistance to extreme pressure
C10N 30/12 - Inhibition of corrosion, e.g. anti-rust agents, anti-corrosives
In order to make an operation to press-fit a holder (21) of a sensor unit (20) into a fixed ring (11) of a rolling bearing (10) easier and to suppress deformations of the holder (21) and the fixed ring (11), several samples are extracted from holders (21) constituting one processed lot when press-forming the holders (21). The sizes in the radial direction of press-fit surfaces (25) of the samples are measured, and a representative size of the holders (21) is set for each lot on the basis of the measurement result. Then, a reference size and a dimensional tolerance of the size in the radial direction of a notch part (16) of the fixed ring (11) are set so that the tightening allowance between the notch part (16) and the press-fit surface (25) falls within a range which has been set in advance with respect to the representative size. Subsequently, notch parts (16) for one lot are processed.
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
This bearing device has a rolling bearing (10) provided with a sensor (22) and a wireless communication means (23) of a sensor unit (20). In order to improve the dust-proofness and watertightness of the communication means (23) while suppressing deterioration in communication performance and ease of assembly, the communication means (23) is equipped with a circuit board (25) having a wireless communication circuit (26) mounted thereon and an external antenna (28) connected to the circuit board (25) through a cable (27), the circuit board (25) and the communication circuit (26) are covered with a coating film (CT), the external antenna (28) is not covered with the coating film (CT), and a space is provided between the external antenna (28) and a resin cover (24) covering the communication means (23).
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 ball screw comprising a circulation member 5 that is mounted in a fitting hole 6 disposed in a nut 3, and that causes a rolling ball to circulate. The circulation member 5 includes engagement parts 12 which, in a state where the circulation member is mounted in the fitting hole 6, engage with the fitting hole 6 by being bent. When viewed from the radially outer side of the nut 3, the engagement parts 12 engage with the fitting hole 6 in a state of being bent in an arc shape around the center P of the fitting hole 6.
A large number of fine protrusions (23) are formed on the outer side surface of a seal member (5) so as to form a water-repellent surface having a contact angle (θ) of water of 90° or more.
This ball screw includes a circulation member 5 which is attached to a fitting hole 6 provided in a nut 3 and which circulates a rolling ball. A pair of gaps 15 for inserting a jig 20 for positioning the circulation member 5 with respect to the fitting hole 6 are provided between the fitting hole 6 and the circulation member 5. The pair of gaps 15 are positioned respectively on one side and the other side in the extension direction of a screw shaft.
A charging station (1) is provided with: power generation equipment (5) having at least one of a solar power generation device and a wind power generation device; a storage battery (6) for storing the power generated by the power generation equipment (5); a control device (7) for performing control of inputting the power generated by the power generation equipment (5) into the storage battery (6), and of outputting the power of the storage battery (6) to a charging device (8); and a housing (2) for accommodating the storage battery (6) and the control device (7). An opening/closing section (12) is provided on the housing (2), the charging device (8) is provided within the opening/closing section (12) or inside the housing (2), and an uncrewed aircraft (10) having landed on the charging device (8) is accommodated inside the housing (2) due to closing of the opening/closing section (12).
B64U 80/25 - Transport or storage specially adapted for UAVs with arrangements for servicing the UAV for recharging batteriesTransport or storage specially adapted for UAVs with arrangements for servicing the UAV for refuelling
B64U 10/14 - Flying platforms with four distinct rotor axes, e.g. quadcopters
E04H 6/44 - Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages for storing aircraft
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 7/35 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
Provided are an angular ball bearing and a rotation mechanism with which ball wear can be suppressed even when the balls slide against each other, and cost can be reduced. An angular ball bearing (1) is an angular ball bearing having no retainer and comprising 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). The surface roughness of the balls (4) is 0.06 μmRa or less, and the kinematic viscosity (40°C) of a lubricant is 46-220 cst. When the lubricant is grease, the consistency of the grease ranges from No. 1 to No. 00. The surface roughness of the balls (4) is more preferably 0.04 μmRa or less, and the kinematic viscosity (40°C) of the lubricant is more preferably 68-150.
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
This motor unit 1 comprises: an electric motor 2; a substrate 3 provided with a control unit C for the electric motor 2; a metal housing 5 accommodating the electric motor 2 and the substrate 3; and a bus bar holder 42 insulating and holding a plurality of bus bars 41 between the substrate 3 and the electric motor 2 in an axial direction. A terminal 41a provided at one end of each bus bar 41 is inserted into a corresponding terminal insertion hole 31 provided on the substrate 3 to electrically connect a coil 26 of a stator 23 and the control unit C. The housing 5 is arranged between the bus bar holder 42 and the substrate 3 in the axial direction, and has a motor cover 54 for sealing one end opening of a motor housing part 51 accommodating the electric motor 2. The terminal 41a and the substrate 3 are positioned by the motor cover 54.
This energization unit (1) is configured by including: a conductive annular case body (2) that is fitted into a housing (6); a conductive energization member (3) that protrudes radially inward from the case body (2) and is in sliding contact with a motor shaft (5); and an elastic member (4) that urges the energization member (3) toward the motor shaft (5). Alternatively, this energization unit is configured by including: a case body (2); a conductive energization member (3) that protrudes radially inward from the case body (2) and is in sliding contact with a motor shaft (5); a radial-direction elastic member (16) that urges the energization member (3) radially inward; and a pressing mechanism (17) that presses the energization member (3) from one side in the axial direction toward the other side. A bearing unit (A) has the energization unit (1) and a bearing (7).
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 35/06 - Mounting of ball or roller bearingsFixing them onto shaft or in housing
H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
A hand (6) according to the present invention comprises a pair of claw parts (46) that move in the opening/closing direction to grip or release a workpiece (W), and a grip part (38) for moving the claw parts (46) in the opening/closing direction. The claw parts (46) are supported by the grip part (38) at base end portions thereof so as to be movable in the opening/closing direction, extend in the longitudinal direction from the grip part (38), and have gripping surfaces (52) for gripping the workpiece (W) at tip end portions thereof. The gripping surfaces (52) each have a first inclined surface (54) and a second inclined surface (56), and a tip end-side angle (α) is set to be smaller than a base end-side angle (β).
This insulated rolling bearing unit includes a rolling bearing (1) and an insulated washer (2). An outer race (3) has an outer race width surface (9), an outer circumference cylindrical surface (10), and an outer race chamfered section (11). The outer circumference cylindrical surface (10) is coated with an insulative film (12). The insulated washer (2) has an annular protrusion (14).
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
This bearing device has a magnetic ring attached to a rotary member, and has a sensor unit which is attached to a counterpart member and provided with a sensor, a wireless communication circuit, a power supply circuit, and a stator, resulting in the stator and the magnetic ring to oppose each other in the radial direction. In the bearing device, the space required for arranging the sensor unit and the magnetic ring is reduced by suppressing the size of the sensor unit. In the sensor unit (4), the stator (7) is provided at a finite length in the circumferential direction. The stator (7), the sensor (11), the wireless communication circuit (12), and a power supply circuit (13) are arranged on the same circumference.
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
The present invention avoids, during an operation of a ball bearing including a crown-shaped resin retainer, interference between the resin retainer and a bearing ring while suppressing a load on the resin retainer due to lag of progressing balls. When a pocket diameter on a circumferential cut surface of the resin retainer (4) is dc, a pocket diameter on a radial cut surface of the resin retainer (4) is dr, and a diameter of the ball (3) is Da, Da < dr < 1.07 Da ≤ dc is satisfied.
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
This rolling bearing comprises an outer member (1) and an inner member (2), a plurality of rolling elements (3) disposed along the circumferential direction in an annular space between an inner diameter surface of the outer member (1) and an outer diameter surface of the inner member (2), a locking portion (11) in the circumferential direction provided on one of the outer member (1) and the inner member (2) and a sliding contact portion (12) in the circumferential direction provided on another outer member (1) and another inner member (2), and a retaining ring (20) that abuts the locking portion (11) and the sliding contact portion (12) and that makes electrical connections between the outer member (1) and the inner member (2), wherein the retaining ring (20) is electrically conductive and elastically deformable, and is a rolling bearing that contacts the sliding contact portion (12) with an interference a in the axial 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
18.
SLIDING CONSTANT VELOCITY UNIVERSAL JOINT AND WHEEL DRIVING DEVICE PROVIDED WITH SAME
In a double offset type sliding constant velocity universal joint 1 provided in a power transmission system of a vehicle using an electric motor as a drive source, an axial clearance (pocket clearance) δ1 is formed between a pocket 12 of a holder 5 and a ball 4, and an axial clearance δ2 of 0.6 mm or more is formed between a spherical surface part 15 of an inner peripheral surface of the holder 5 and a spherical outer peripheral surface 8 of an inner joint member 3.
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
19.
INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD
A monitoring device (100) creates a report on the basis of a pre-maintenance physical quantity detected by a sensor (S) before first maintenance in response to an anomaly in a wind power generation unit (45), and of a post-maintenance physical quantity detected after the first maintenance by the sensor (S) which has detected the pre-maintenance physical quantity, and outputs the report.
A calculation device (102) identifies the type of a second anomaly. The calculation device determines a maintenance schedule for the second anomaly on the basis of the type of the second anomaly. The communication interface (106) outputs the maintenance schedule.
A roller fall-off prevention tool (1) is applied to a bearing (11) in a form in which a roller (13) falls on an inner diameter side of a cage (12). On the outer periphery of both end portions in an axial direction, a tapered portion (2) is formed, in which an incident angle with respect to the bearing (11) is less than 45°. The outer periphery of an intermediate portion in the axial direction is a straight portion (3) forming a cylindrical surface parallel to the axis. From both end surfaces in the axial direction, four or more slits (4) are alternately formed at equal intervals in a circumferential direction. When the tool is mounted on the bearing (11), the straight portion (3) is brought into contact with the roller (13) by being fitted into the inner side of the inscribed circle of the roller (13) from the small-diameter end of the tapered portion (2). When the tool is removed from the bearing (11), the shaft or the inner ring is abutted against a ridge (5) extending in the axial direction on the inner diameter surface.
F16C 41/04 - Preventing damage to bearings during storage or transport thereof or when otherwise out of use
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
Provided are a sealing device capable of achieving both low torque and high sealing performance by improving grease applied to a seal lip and a mating member thereof, and a rotating component that employs the sealing device. A sealing ring 14 is fixed to a fixed-side member 2 of the rotating component, is in sliding contact with a rotating-side member 15, and has a seal lip in sliding contact with the rotating-side member 15, wherein grease is applied to the sliding contact surface of the seal lip; the grease contains a base oil, a thickener, and an additive, and the apparent viscosity of the grease at a shear rate of 1,000 s-1 at 60°C is 0.22 Pa s or more.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
C10M 107/02 - Hydrocarbon polymersHydrocarbon polymers modified by oxidation
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
C10M 135/10 - Sulfonic acids or derivatives thereof
C10M 159/24 - Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing sulfonic radicals
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
C10M 171/02 - Specified values of viscosity or viscosity index
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 19/18 - 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
F16J 15/18 - Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
F16J 15/324 - Arrangements for lubrication or cooling of the sealing itself
F16J 15/3232 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
A first mathematical expression is prepared which enables a determination for a rolling bearing (10) comprising an inner ring (11), an outer ring (12), a plurality of rolling elements (13), and a lubricant (LQ). In accordance with a usage condition of the rolling bearing (10), it is determined whether the following first mathematical expression (1): F=f(α,β,γ,δ) satisfies the following second mathematical expression (2): F≤10. In parameter calculation for the lubricant (LQ), the lubricant (LQ) is divided into a first region and a second region. In a virtual electric circuit corresponding to the rolling bearing (10), a characteristic value of a virtual element assessed for the first region and the second region is determined.
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
Provided is a power conversion device having a configuration in which a plurality of types of generators are connected, the control of the plurality of types of generators being capable of being switched using a switching control method. The power conversion device performs power conversion of power input from each of the plurality of types of generators and outputs the result toward a load, the power conversion device comprising: a shared power conversion circuit that has the load connected thereto and performs the power conversion, each of the plurality of types of generators being connected to the shared power conversion circuit via a switching unit; and a control unit that controls each of the plurality of types of generators. The control unit switches control programs for controlling the plurality of types of generators, and uses the switched control programs. The switching unit concurrently switches power input from the plurality of types of generators and inputs the switched power to the shared power conversion circuit. The control unit switches the control programs to control programs corresponding to the generators and uses the adapted control programs.
Provided is a rolling bearing fitted with an electroconductive seal in which a seal member (5) is formed of electroconductive rubber, and a seal sliding contact surface (13) with which a seal member (5) is in sliding contact is formed on an inner race (2). The seal sliding contact surface (13) is a surface in which the skewness Rsk and the kurtosis Rku of a roughness curve in a direction orthogonal to the circumferential direction are such that Rsk>0 and Rku<3.
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
Provided are a rolling bearing cage and a rolling bearing using the cage, the rolling bearing cage making it possible to: maintain an oil film on a contact surface even with a small amount of lubricant by defining the surface roughness of the cage by means of a plurality of three-dimensional surface roughness parameters; and stably maintain a low friction state even under severe lubrication conditions. The cage 5 is a resin-made cage for the rolling bearing, and has a plurality of pockets 6 that hold rolling elements. A value of A = (Sa/10) + Str + (Spk/10) obtained from an arithmetic average height Sa, an aspect ratio Str of surface properties, and a protruding peak height Spk on the surface 6a of the pockets 6 is equal to or greater than 1.20.
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
A film (manganese phosphate film 20) that reduces surface roughness to less than that of a base material surface is formed on at least one surface among a cylindrical inner peripheral surface 6 of an outside joint member 2 of a double offset type constant velocity universal joint 1, a surface of a track groove 7 of the outside joint member 2, a spherical outer peripheral surface 8 of an inside joint member 3, a surface of a track groove 9 of the inside joint member 3, a spherical surface section 13 of an outer peripheral surface of a retainer 5, and a spherical surface section 15 of an inner peripheral surface 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
The present invention addresses the problem of suppressing movement of a slinger in an axial direction regardless of the resultant axial length of a cylindrical part of the slinger. An outer-side seal member (10) of a wheel bearing device (1) comprises: a slinger (13) that is provided to a base part (3d) of a hub flange (3b) and that has a cylindrical part (13a) which fits into an outer peripheral surface (3j) of a hub ring (3) and a disk part (13b) which faces the hub flange (3b); and a seal member (12) that has a seal lip. The outer peripheral surface (3j) of the hub ring (3) has a fitting part (31) into which the cylindrical part (13a) of the slinger (13) fits. The fitting part (31) has a small-diameter section (311) and a large-diameter section (312) that is positioned farther from the hub flange (3b) than the small-diameter section (311) in the axial direction and that is formed to have a diameter larger than that of the small-diameter section (311).
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
F16J 15/3232 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
F16J 15/3256 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
29.
COLLECTION ARRANGEMENT MEMBER, COLLECTION ARRANGEMENT DEVICE, AND COLLECTION ARRANGEMENT METHOD
The present invention comprises: a collection pin (141) having a hollow shape and capable of cutting and collecting a to-be-processed material; an arrangement pin (142) that contacts, inside the collection pin (141), the to-be-processed material in the collection pin (141), and presses the to-be-processed material to arrange the to-be-processed material outside the collection pin (141); and a fixing holder (143) to which the collection pin (141) is fixed. The to-be-processed material is a gel sheet in which a gel for supporting an object to be collected is formed in a sheet shape.
C12M 1/34 - Measuring or testing with condition measuring or sensing means, e.g. colony counters
G01N 1/04 - Devices for withdrawing samples in the solid state, e.g. by cutting
30.
METHOD FOR ESTIMATING ROLLING VISCOSITY RESISTANCE, SYSTEM FOR ESTIMATING ROLLING VISCOSITY RESISTANCE, PROGRAM FOR ESTIMATING ROLLING VISCOSITY RESISTANCE, AND COMPUTER-READABLE RECORDING MEDIUM IN WHICH SAID PROGRAM IS RECORDED
A rolling bearing 1 comprises raceway surfaces 11a, 12a, and a rolling element 13 that rolls on the raceway surfaces. In the rolling bearing 1, the raceway surfaces and the rolling element are brought into point contact with each other, an oil film is formed at the point contact portion, and the raceway surfaces 11a, 12a are provided with a contact part that comes into contact with the rolling element 13 and a non-contact part that does not come into contact with the rolling element. An estimated value Fr,w of the rolling viscous resistance is calculated from a regression equation in which the scope of calculation in the major-axis direction of a contact ellipse is a length selected within a range that exceeds the major-axis radius of the contact ellipse and does not exceed the equivalent radius in the axial 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
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
Provided is a clutch unit 1 including: an input-side clutch 10 that controls the transmission and blocking of torque which is input through a lever operation; an output-side clutch 20 that, when no lever operation is performed, is set to a locked state that restricts the rotation of an output shaft 2 and blocks reverse input torque which is input to the output shaft 2; and a lock mechanism 30 that restricts the rotation of the output shaft 2 at an axial position different from that of the output-side clutch 20. The lock mechanism 30 restricts the rotation of the output shaft 2 by meshing external teeth 31b of a first lock element 31 that rotates integrally with the output shaft 2 with internal teeth 32a of a second lock element 32 that is restricted from rotating about the axis X of the output shaft 2, and releases the meshing state of the external teeth 31b and the internal teeth 32a when the second gear 32 is moved in the axial direction through a lever operation. The tooth width L2 of the internal teeth 32a of the second lock element 32 is set to be smaller than the tooth width L1 of the external teeth 31b of the first lock element 31.
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
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 41/066 - 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
An electric motor device comprises: a stator (4) that has a stator magnetic body (17) and an excitation coil (3) wound around the stator magnetic body (17); a rotor (6) that has a magnetic pole facing the stator (4) and that is rotatably supported with respect to the stator (4); and a support body (Sp) that supports the stator magnetic body (17). The stator magnetic body (17) is provided with cavities (17b) from the location where the excitation coil (3) is provided to the location where the stator magnetic body is fixed to the support body (Sp). The magnetic pole of the rotor (6) faces the stator (4) in the radial direction of a coordinate system with the rotation axis of the rotor (6) as the axial direction, and the stator magnetic body (17) is fixed to the support body (Sp) at an inner diameter-side end part thereof. The cavities (17b) are provided in the radial positions between an inner diameter-side portion of a fixing part to the excitation coil (3) and a fixing part to the support body (Sp), in the stator magnetic body (17).
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 1/12 - Stationary parts of the magnetic circuit
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02K 9/00 - Arrangements for cooling or ventilating
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 11/33 - Drive circuits, e.g. power electronics
A rolling bearing (100) supports a rotating shaft of a drive unit for a vehicle. The rolling bearing comprises an inner ring (10), an outer ring (20), and a rolling element (30) which are made of quenched and tempered steel. The inner ring, the outer ring, and the rolling element respectively have rolling surfaces (10da, 20ca, 30a). The dislocation density of retained austenite in a surface layer of at least one of the rolling surfaces of the inner ring and the outer ring is 2.5 × 1014m-2or more and 1.0 × 1017m-2 or less.
C21D 9/36 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ballsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for rollers
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
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 19/36 - 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
Provided is a shaft seal capable of reducing the variation in the inner diameter contraction amount at the time of installation in a housing, while reducing the rotational torque of the shaft seal, thereby suppressing variation in the rotational torque. A shaft seal 5 is an annular shaft seal provided between a rotary shaft 6 and a housing 7, and is provided with an inner diameter lip 2, and an outer diameter lip 1 provided on the outer diameter side of the inner diameter lip 2. In the shaft seal 5 in a free state, when the height of the outer diameter lip 1 is L1 and the height of the inner diameter lip 2 is L2, 0.5 ≤ (L1/L2) ≤ 0.9 is satisfied, and the inclination angle with respect to the axial direction of the outer diameter lip 1 is larger than 5°.
A stator 2 includes: an annular stator core 10 having a plurality of teeth 12; a coil 30 wound around each tooth 12; a crossover wire 31 connecting adjacent coils 30; and a terminal 42 electrically connected to the crossover wire 31. The plurality of the coils 30 and the crossover wire 31 are formed of one coil wire. The crossover wire 31 is provided with a tension relaxation mechanism 51 that is bent in contact with a region other than a contact part P1 with the terminal 42.
The present invention provides: a retainer for rolling bearings, which has excellent heat resistance, is capable of achieving good moldability even in cases where the retainer is, for example, thick, and has excellent strength; and a rolling bearing which uses this retainer. This retainer 5 is a retainer for rolling bearings, which is formed by injection molding a resin composition and has a plurality of pockets 6 for holding rolling bodies. The resin composition contains the following components (A) to (C). (A) 30-89.9% by mass of a copolymerized polyamide resin which contains, as constituent units, a hexamethylene terephthalamide unit and a hexamethylene adipamide unit (B) 10-50% by mass of glass fibers or carbon fibers (C) 0.1-20% by mass of a plate-shaped filler
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
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
37.
WRIST JOINT UNIT AND WORK DEVICE EQUIPPED WITH SAME
A wrist joint unit (HU) comprises: an arm (5); a first rotation member (6) that is provided so as to be rotatable about a first rotation axis (C1); a bevel gear (7) that is a second rotation member provided so as to be rotatable about a second rotation axis (C2) orthogonal to the first rotation axis (C1); a first motor (9) that is supported by the arm (5) and that drives the first rotation member (6) to rotate; and a second motor that is supported by the arm (5) and that drives the bevel gear (7) to rotate. The first rotation member (6) is supported in a cantilever manner by the arm (5), and the bevel gear (7) which is the second rotation member is supported in a cantilever manner by the first rotation member (6). An end effector (11) can be fitted to the bevel gear (7).
This rotational load device comprises a slide tube (16) which is fitted around the outer perimeter of a rotary shaft (15) so as to be slidable in the axial direction and an elastic member (17) which biases the slide tube (16) in the axial direction, wherein a cam groove (30), the axial position of which changes along the circumferential direction, is formed in the slide tube (16), and a cam pin (31), which slides inside the cam groove (30) when the rotary shaft (15) rotates, is provided in the outer periphery of the rotary shaft (15).
Provided is a ball bearing which is used at a dmn value of not less than 700,000. The retainer (10) is a crown-shaped retainer including engineering plastic, wherein: the diameter φx of a ball (5), the radius Ry of a radial-direction inner peripheral surface (D) of a pocket (11) in a cross-section that passes through the pocket center (C) and that includes the axial center (O) of the bearing, and the radius Rz of a circumferential-direction inner peripheral surface (E) of the pocket (11) in a cross-section that, at the pocket center (C), is orthogonal to a straight line in the bearing radius direction which passes through the pocket center (C) satisfy φx<2Ry<2Rz; and the center (C2) of a second inner peripheral surface (E2) at the tip end side of the circumferential-direction inner peripheral surface (E) is further eccentric to the base part (12) side in comparison to the center (C1) of a first inner peripheral surface (E1) on the base part (12) side.
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 ball bearing having a structure in which: a cage is less susceptible to expansion in diameter due to a load of centrifugal force during high-speed rotation; and more lubricating oil is allowed to flow from the back side of the cage toward the inner raceway member. A ball bearing 20 has a cage 24 having: an annular base part 30 positioned on one side in the axial direction of a ball 23; and multiple pairs of retaining claws 32 extending from the annular base part 30 toward the other side in the axial direction. A pocket 31 having a spherical recessed surface is formed in the opposite surfaces of each pair of the retaining claws 32 and in one axial end face of the annular base part 30 in order to house the ball 23 in such a manner as not to fall off in the axial and radial directions. In the ball bearing in which a back surface of the annular base part 30 on one side in the axial direction has an outer diameter corner 30a and an inner diameter corner 30b that are chamfered, the annular base part 30 has a larger chamfered part formed at the outer diameter corner 30a of the back surface than that formed at the inner diameter corner 30b.
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
Provided is a clutch unit which prevents a locking mechanism from switching from an engagement state to an engagement-released state due to torque which is inputted from an output side of a drive shaft. This clutch unit 1 has: an output-side clutch 20 for restricting the torque-induced rotation of a drive shaft 2 around an axis P; an input-side clutch 10 which has an input-side first rotation member 11 to which torque is inputted by an operation lever 40, and an input-side second rotation member 13 for transmitting torque to the drive shaft 2, and is capable of switching between a connection state in which torque is transmitted by the operation lever 40 and a connection-released state in which torque is not transmitted; and a locking mechanism 50 configured so as to be capable of switching between an engagement state in which rotation of the drive shaft 2 is suppressed by the operation lever 40, and an engagement-released state in which rotation is not suppressed. The torque transmission mechanism input-side clutch 10 of the clutch unit 1 is in a connection-released state when positioned at the location at which the operation lever 40 switches the locking mechanism 50 to the engagement state.
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
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
42.
SILICON NITRIDE SINTERED BODY, MACHINE PART USING SAME, AND BEARING
Provided are: a silicon nitride sintered body having both workability and favorable mechanical characteristics; a machine part using the same; and a bearing. This silicon nitride sintered body has a Vickers hardness of 1,220-1,400 Hv, the maximum diameter of holes in a surface layer part that is a region within 2 mm from the surface of the silicon nitride sintered body is at most 30 μm, the silicon nitride sintered body has a degree of crystallinity of 75-90% and contains a rare-earth element and an aluminum element, the content of the rare-earth element is 6-13 wt%, in terms of oxide, with respect to the total weight of the silicon nitride sintered body, and the content of the aluminum element is 6-13 wt%, in terms of oxide, with respect to the total weight of the silicon nitride sintered body.
C04B 35/591 - Fine ceramics obtained by reaction sintering
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 sintered oil-impregnated bearing comprising, on the inside-diameter surface thereof, a radial-dynamic-pressure-generating part having radial dynamic pressure grooves and dynamic pressure ridges between the dynamic pressure grooves. In a shape in which the circularity of the radial dynamic pressure grooves is linearly developed, a ridge rising ratio E is set to 0.5 or less, the ridge rising ratio E being calculated as (A + B)/D, where A and B respectively are the width dimensions of two ridge rising edges at the height position of the dynamic pressure ridges where the dimension from a center line along the development direction is 0.2 μm, and D is the total ridge width.
Provided is a bearing electrolytic corrosion prevention device that is excellent in prevention of wear in a ground shaft while being capable of preventing electrolytic corrosion of a rolling bearing for supporting a motor shaft, by electrically connecting the motor shaft and the ground shaft and electrically connecting the ground shaft and a case. To this end, the conductive ground shaft (11) is disposed so as to rotate together with the motor shaft (2) while being electrically connected to the motor shaft. A conductive case (10) is disposed apart from the ground shaft (11) and the motor shaft (2). A bearing (12) for supporting the ground shaft supports the ground shaft (11) with respect to the case (10). The ground shaft (11) and the case (10) are electrically connected by a conductive fluid (13) sealed between the case (10) and the ground shaft (11).
H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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
H02K 1/22 - Rotating parts of the magnetic circuit
45.
ATTACHMENT STRUCTURE FOR UNIVERSAL CONSTANT-VELOCITY JOINT BOOT
This attachment structure for a boot is obtained by fitting an annular protrusion section 26, provided on the inner peripheral surface of a large-diameter cylindrical part 21 (fixing part A) of the boot 20, to a first annular groove 8, provided on the outer peripheral surface 6a of a boot fixed part B of an outer joint member 2, and securely fastening the outer peripheral surface of the fixing part A with a boot band 24 in a state in which annular protrusions 10 provided on both sides of the first annular groove 8 in the axial direction are pressed against the inner peripheral surface of the fixing part A, and thereby attaching and fixing the fixing part A to the boot fixed part B. Support parts 11 which contact and support the inner peripheral surface 21a of the fixing part A from outside the range of the band width of the boot band 24 are provided on the outer peripheral surface of the boot fixed part B, and are disposed on both sides of the boot band 24 in the axial direction.
This rolling member has a surface and is made of steel having undergone quenching and tempering. The rolling member includes a nitrided layer formed on said surface. The nitrogen concentration on the surface is 0.20 mass percent or greater. The carbon concentration on the surface is 0.70-1.5 mass percent. The hardness at the surface is 820-1000 Hv. The amount of retained austenite on the surface is 20 volume percent or less.
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
C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
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 present invention is an oil-impregnated sintered bearing in which 5 or more axial grooves are formed in a bearing inner diameter surface at a predetermined pitch along the circumferential direction, said oil-impregnated sintered bearing being formed by the grooves and ridges formed between the adjacent grooves along the circumferential direction. The surface opening ratio of the grooves is larger than the surface opening ratio of the ridges. The ridge/groove ratio is 1 or less, and the circumferential length of the ridges is 0.1 mm or more. The depth of the grooves is 8 times or less the size of the gap between the inner diameter surface and the outer diameter surface of a shaft member. The interval angle of the circumferential interval between ridges adjacent to each other along the circumferential direction is 72° or less.
Provided are: a seal material composed of a PTFE resin composition that can be used universally and is excellent in abrasion resistance and non-aggressiveness to mated materials; a seal member for a compressor, the seal member being composed of the seal material; a cup seal for a reciprocating compressor, the cup seal being composed of the seal material; and a tip seal for a scroll compressor, the tip seal being composed of the seal material. The seal material composed of a polytetrafluoroethylene resin composition contains polytetrafluoroethylene resin as a base resin and zinc powder (metallic zinc powder or copper-zinc alloy powder). The zinc content is 1.0 mass% to 10 mass% relative to the total weight of the polytetrafluorethylene resin composition, and the average particle size of the zinc powder is 5.0 μm to 80 μm.
C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds
C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
F16J 9/28 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials of non-metals
F16J 15/16 - Sealings between relatively-moving surfaces
F16J 15/3204 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
F16J 15/3284 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structureSelection of materials
A rolling bearing (100) supports a rotating shaft of a vehicle drive unit. The rolling bearing comprises: an inner race (10), an outer race (20), and a rolling element (30), all of which are steel and were subjected to quenching and tempering. The inner race, the outer race, and the rolling element respectively have rolling surfaces (10da, 20ca, 30a). The hardness of the rolling surface of at least one of the inner race, the outer race, and the rolling element is 865Hv to 1245Hv.
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 wheel bearing device in which, in a case when the wheel bearing device has a large size, the axial distance between multi-row rolling elements is set to an appropriate value, so as to make it possible to improve bearing rigidity. The wheel bearing device comprises: an outer member 24; an inner member composed of a hub ring 31 which has an inner raceway surface 29 and a wheel-mounting flange 25, and an inner ring 28 which is coupled to the hub ring 31 and which has an inner raceway surface 30 at an outer diameter portion; and double-row steel balls 32 which are accommodated between the raceway surfaces so as to be freely rollable. In a lateral-face cross-sectional view of the wheel bearing device, when the contact angle of an outer-side steel ball is denoted as θ1, and the contact angle of an inner-side steel ball is denoted as θ1, the distance f between a virtual straight line L1 extending from the center of the outer-side steel ball in the contact angle θ1 direction and an outer-side base portion 43 of a vehicle-body-mounting flange 23 satisfies f>0, and the distance g between a virtual straight line L2 extending from the center of the inner-side steel ball in the contact angle θ2 direction and an inner-side base portion 44 of the vehicle-body-mounting flange 23 satisfies g>0.
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 35/14 - Torque-transmitting axles composite or split, e.g. half-axlesCouplings between axle parts or sections
This determination method for determining the characteristics of a rotary machine includes a step for calculating a first spring constant between a rolling element (15) and a first raceway (11A), a step for calculating a second spring constant with respect to a second raceway (12A), a step for calculating a third spring constant of a first finite element model (11M), a step for calculating a fourth spring constant of a second finite element model (12M), a step for calculating the spring constant of a third finite element model (15M) on the basis of the first spring constant to the fourth spring constant, and a step for determining the characteristics of a rotary machine using the calculated spring constant of the third finite element model (15M).
A power supply device (1) comprises: a windmill (2) that has a windmill support column (14) and windmill blades (16); a power generator (4) that generates power by the rotation of the windmill (2); a container comprising the windmill (2) together with the power generator (4); and a linear motion guidance device (24) for installing the windmill (2) on a wall surface of the container (6) so as to be capable of vertical motion. The linear motion guidance device (24) has: a guide member (42) that extends in the vertical direction; and a slide member (44) that moves along the guide member (42). Moreover, a clearance adjustment member (26), which fixes the windmill (2) to the container (6) and adjusts the clearance between the windmill (2) and the container (6), is provided between the windmill (2) and the container (6).
This bearing condition monitoring system comprises: an operation condition determination means (2) that determines an operation condition of a bearing on the basis of external force detected by a sensor unit (1); a diagnostic speed setting means (3) that, when the bearing is determined to be in a light-load operation condition by the operation condition determination means (2), sets a detailed diagnostic speed on the basis of the rotation speed and vibration of the bearing detected by the sensor unit (1); and an abnormality diagnosis means (4) that changes the rotation speed of the bearing to the detailed diagnostic speed and performs detailed diagnosis of the bearing.
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 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
Provided are: a bearing retainer (a crown retainer) that is capable of handling high-speed rotation and that exhibits excellent strength at a weld; a mold for injection molding used in manufacturing the retainer; and a retainer manufacturing method employing the mold. A bearing retainer 1 is an injection molded body of a resin composition and is a crown retainer having, atop an annular retainer body, a plurality of pockets 3 that are open on one side in an axial direction and that each retain a ball. A weld line is formed on at least one pillar 4 among pillars located between the pockets 3, the weld line being convex on one side in a 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
A motor unit 1 comprising: a motor unit 2; a control unit 3 that controls the motor unit 2; bearings 20, 21 that rotatably support a motor rotating shaft 7 of the motor unit 2; a bearing holder 22 that holds the bearing 20, said bearing holder 22 being positioned between the motor unit 2 and the control unit 3; and a housing 4 in which the motor unit 2, the control unit 3, the bearings 20, 21, and the bearing holder 22 are accommodated, an insulative fluid being caused to flow into the motor unit 2. The bearing holder 22 has a through-hole 22e provided so that a space in the housing 4 on the motor-unit 2 side and a space in the housing 4 on the control-unit 3 side communicate, and a partition wall member 25 via which the space between the motor-unit 2 side and the space on the control-unit 3 side are closed off from each other is positioned in the through-hole 22e.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
Provided is a wheel bearing device that, while suppressing discrepancies in phase between a constant-velocity universal joint and a wheel bearing, can facilitate fitting of the constant-velocity universal joint into the wheel bearing. A spline-fittable concave section (3h) that extends in an axial direction is formed in an inner peripheral surface of a first hole (31) of a through-hole (3e). A convex section (24) that extends in the axial direction and is spline-fittable with the concave section (3h) is formed in an outer peripheral surface of a stem section (23) of the constant-velocity universal joint (20). The convex section (24) comprises a first convex section (25) that spline-fits closely with the entirety of the concave section (3h) and a second convex section (26) that is located on an outer side relative to the first convex section (25) and can spline-fit with the convex section (3h) with a gap therebetween in a radial direction, a circumferential direction, or both the radial direction and the circumferential direction. The second convex section (26) has a shape such that the external diameter, the width in the circumferential direction, or both the external diameter and the width in the circumferential direction become greater from one side in the axial direction to the other side.
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axlesCouplings between axle parts or sections
B60B 35/18 - Torque-transmitting axles characterised by the arrangement of the bearings for the torque transmitting elements in the axle housings
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 present invention addresses the problem of reducing the axial-direction size of a rotation sensor-equipped bearing in which a magnetic sensor and a magnet of a magnetic ring oppose one another at a position on one axial-direction side in relation to a rolling bearing, and the magnet is positioned on one axial-direction side in relation to the magnetic sensor. An outer ring (4), which is one bearing ring among an inner ring (3) and said outer ring (4) of a rolling bearing (1), comprises: a width surface (9a) positioned at the end on one axial-direction side from among two ends that define the width of the outer ring (4); and a notch section (18) that is indented toward the other axial-direction side from the width surface (9a). A magnetic sensor (15) is attached at the notch section (18).
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
The purpose of the present invention is to provide a wheel bearing device that makes it possible to suppress the formation of gaps in a flat surface of a crimped portion, improve the rigidity of the crimped portion, and increase the lifespan of the entire bearing device. This wheel bearing device(1) comprises: an outer ring (2); an inner member that has a hub ring (3) and inner rings (4A), (4B); and tapered rollers (5A), (5B) that are a plurality of rows of rolling bodies accommodated between the respective raceway surfaces of the inner member and an outer member so as to be capable of rolling. A crimped portion (3d) is provided to a protruding end of the hub ring (3). A stem portion (15) of an outer joint member (17) of a constant velocity universal joint (11) is inserted into the inner bore of the hub ring (3) and spline-fitted thereto. A flat surface (21) that abuts a shoulder portion (16) of the outer joint member (17) is provided to the crimped portion (3d) of the hub ring (3). The radial-direction outer surface (21a) of the flat surface (21) protrudes more to the shoulder portion (16) side of the outer joint member (17) in the axial direction than the radial-direction inner surface (21b) thereof.
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axlesCouplings between axle parts or sections
F16C 19/08 - 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 two or more rows of balls
Provided is a rolling bearing (1) in which a fitting surface (2b) to be fitted into a housing (10), which is a fixed side member, and a flank surface (2c) that divides the fitting surface (2b) across the entire width thereof and that faces an inner circumferential surface (10a) of the housing (10) with a larger radial clearance than the fitting surface (2b) are formed on an outer circumference of an outer ring (2). The flank surface (2c) is machined to have a roughness Ra of 5.0 μm or less.
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 this ball bearing with a seal, a retainer (10) in the ball bearing (1) to be used at a dmn value of 700,000 or higher is a crown-shaped retainer containing an engineered plastic, wherein: the diameter φx of a ball (5), the radius Ry of an inner peripheral surface of a pocket (11) in a cross-section passing through a pocket center (C) and including an axial center (O) of the bearing, and the diameter φz of the inner peripheral surface of the pocket (11) in a cross-section orthogonal at the pocket center (C) to a straight line passing through the pocket center (C) in a radial direction of the bearing have a relationship expressed by φx < 2Ry < φz; and a seal lip (21) provided on a seal member (20) can be brought into a fluid-lubricated state by an oil film formed between the seal lip and a seal sliding surface (B).
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
F16J 15/3204 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
F16J 15/3244 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
The present invention comprises a plurality of pocket wall parts (9) provided with recesses constituting pockets (2), two annular bodies (11) in which connecting plate parts (10) that link the pocket wall parts (9) to each other are alternately formed in a circumferential direction, a retainer (3) in which the plurality of pockets (2) are formed in the circumferential direction due to the two annular bodies (11) being made to face each other in the axial direction, an inner ring (5) having an inner ring raceway surface (4) formed in the outer peripheral surface thereof, an outer ring (7) that is provided to the outer peripheral side of the inner ring (5) and has an outer ring raceway surface (6) formed in the inner peripheral surface thereof, and a plurality of balls (8) that are provided so as to be interposed between the inner ring (5) and the outer ring (7) and are held by the pockets (2) formed in the retainer (3). In a state in which the balls (8) are in contact with the circumferential ends of the pockets (2), spherical parts (17) that are not in contact with the balls (8) are formed in the pocket wall parts (9).
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
Provided is a condition monitoring system that can be implemented as an inexpensive, small, and power-saving device with limited computational resources, and that can monitor and diagnose the status of an apparatus to be monitored with a relatively small amount of computation. A condition monitoring system (10) has a measurement data processing unit that calculates processed data from measurement data. The measurement data processing unit (11) executes: a subdivision step for subdividing time series data along a time series, which is measurement data, in the time direction; an FFT step for calculating spectral data by applying fast Fourier transform on each piece of subdivision data obtained by subdividing the time series data; a statistical step for extracting partial spectra of some bands from the spectral data and calculating statistics of the partial spectra; and an integration step for arranging the statistics in the chronological order of the original subdivision data to obtain the processed data.
Provided is a rolling bearing including rolling elements each having a chamfered portion at an axial end portion thereof. A portion at which an outer diameter surface and the chamfered portion of the rolling element intersect with each other has a peeling prevention structure. The peeling prevention structure is configured by forming the intersection portion as a continuous curve.
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 steel rotating member (10, 20, 30) comprises a surface layer part (50) at a surface thereof. The steel contains carbon, silicon, manganese, chromium, molybdenum, vanadium, aluminum, phosphorus, sulfur, nitrogen, and oxygen, with the remainder being iron and unavoidable impurities. The surface layer part has been subjected to a nitriding process. In a first region of the surface layer part at a depth of not more than 5 μm from the surface, compressive residual stress is not less than 80 MPa. In a second region of the surface layer part at a depth of not more than 20 μm from the surface, the content of o nitrogen is 0.2-0.8 mass%, and the average particle size of martensite block particles at a comparative surface area rate of 30% is not more than 2.0 μm.
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C21D 9/28 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for plain shafts
C21D 9/32 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for gear wheels, worm wheels, or the like
C21D 9/36 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ballsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for rollers
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
C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
F16C 17/02 - Sliding-contact bearings for exclusively rotary movement for radial load only
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 method for obtaining the outer diameter, for example, of an annular workpiece W, wherein: in a state in which two outer support parts 3, 3 which are circumferentially spaced apart from each other on the radially outer side of the workpiece W in a flatly placed position are in contact with an outer peripheral surface Wa of the workpiece W, an outer detection terminal 6 and an inner detection terminal 7 which are arranged between the two outer support parts 3, 3 so as to be opposed to each other with the workpiece W therebetween and that have been zero-point calibrated are relatively moved closer together so as to be in contact with the outer circumferential surface Wa and an inner circumferential surface Wb, respectively, of the workpiece W, thereby measuring an amount of displacement δ1 from the zero point of the outer detection terminal 6 to the contact point of the outer detection terminal 6 with the outer circumferential surface Wa of the workpiece W, and an amount of displacement δ2 from the zero point of the inner detection terminal 7 to the contact point of the inner detection terminal 7 with the inner circumferential surface Wb of the workpiece W, and, on the basis of the amounts of displacement δ1, δ2, at least one of the outer diameter dimension, the inner diameter dimension, the outer diameter roundness, the inner diameter roundness, and the thickness of the workpiece W is calculated.
Provided is an electric oil pump that can reduce a production time over conventional art and appropriately correct a rotation number. An electric oil pump (1) is provided with: a pump unit (2) that generates an oil pressure; a motor unit (3) that drives the pump unit (2); and a control unit (4) that controls the motor unit (3). The control unit (4) is provided with an estimated flow rate computation means (26) for computing an estimated flow rate of the pump unit (2) on the basis of a clearance, an oil temperature, a rotation number, a displacement volume, and a pressure of the pump unit (2), a theoretical flow rate computation means (27) for computing a theoretical flow rate of the pump unit (2) from the rotation number and the displacement volume, and a rotation number correction means (28) for adding a corrected rotation number calculated from the estimated flow rate to an indicated rotation number based on the theoretical flow rate.
F04C 14/00 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
F04C 2/10 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
F04C 14/08 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
Provided is a piston ring that has excellent wear resistance at high temperatures and causes minimal wear damage to a cylinder. The piston ring 1 is used in a reciprocating compressor and is made of a resin composition having, as a main component, an aromatic polyetherketone resin having a glass-transition temperature of 150°C or higher. The resin composition contains one or more types of carbon materials that have a sulfur atom content of 200 ppm or less. The resin composition contains 5-35 vol% of carbon materials with respect to the entire resin composition. The carbon materials include at least carbon fibers.
F16J 9/28 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials of non-metals
C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
A track groove 7 of an outer joint member 2 has a guide surface 71 for guiding balls 4. A chamfered section 30 which has an arc-shaped cross-sectional shape in a direction perpendicular to an axial direction is formed between a spherical inner circumferential surface 6 and the guide surface 71 of the outer joint member 2. The chamfered section 30 and the guide surface 71 of the outer joint member 2 are connected to an edge-like connection point E1, and the angle ε between the tangent line of the guide surface 71 and the tangent line of the chamfered section 30 at the connection point E1 is 0º<ε ≤15º.
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 3/224 - 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
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 double-roller type tripod constant-velocity universal joint in which an outer ring 11 has a cylindrical outer circumferential surface 15. A pair of roller guide surfaces 6 of each track groove 5 are flat surfaces parallel to each other. A pair of guide surfaces 7 that can contact the outer ring 11 from both sides in the axial direction are provided on both sides of the roller guide surfaces 6 in the width direction. An inner ring 12 has a cylindrical inner circumferential surface 18. An outer circumferential surface 33 of a leg shaft 32 has a convex curve that bulges out on both sides in a torque transmission direction X in a longitudinal cross section and a transverse cross section. The distance between the convex curve (circular arc 33b) in the transverse cross section of the outer circumferential surface of the leg shaft 32 and the inner circumferential surface 18 of the inner ring 12 increases from an end in the X direction towards both sides in the Z direction. A radius r of curvature of the convex curve (circular arc 33a) in the longitudinal cross section of the outer circumferential surface of the leg shaft 32 is larger than a radius R of curvature of the convex curve (circular arc 33b) in the transverse cross section of the outer circumferential surface of the leg shaft 32.
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
70.
AUTOMATIC BALL INCORPORATION METHOD FOR CONSTANT-VELOCITY UNIVERSAL JOINT
Provided is an automatic ball assembly method for a constant-velocity universal joint 1, 201, said method being characterized in that: an inner assembly I, in which a spherical outer peripheral surface 8, 208 of an inner joint member 3, 203 is fit together with a spherical inner peripheral surface 13, 213 of a cage 5, 205, is fit together with a spherical inner peripheral surface 6, 206 of an outer joint member 2, 202; the respective axes of the cage 5, 205, the inner joint member 3, 203, and the outer joint member 2, 202 are disposed so as to substantially match; the axis of the inner joint member 3, 203 is caused to be inclined with respect to the axis of the outer joint member 2, 202 via an inclination lever 61; a ball 4, 204 is incorporated into a pocket 5a, 205a of the cage 5, 205 which is exposed at an opening end part of the outer joint member 2, 202; and, thereafter, in order to incorporate a ball 4, 204 into another pocket 5a, 205a of the cage 5, 205, when the inclination of the axis of the inner joint member 3, 203 is returned by the inclination lever 61, the cage 5, 205 is pushed in by a cage push-in mechanism 65.
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
B23P 21/00 - Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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 ball bearing that is capable of reducing an interference force between a retainer and a rolling body, which is due to the rolling body lead/lag resulting from a misalignment of inner and outer rings and that is capable of stabilizing, for example, the behavior of the retainer. A deep groove ball bearing (1) comprises: inner and outer rings (2, 3); a plurality of balls (4) which are interposed between the inner and outer rings (2, 3); and a wave-shaped steel plate retainer (5) which is for guiding a rolling body and which holds the balls (4). A circumferential-direction cross section and a radial-direction cross section which pass through the deepest point of a pocket (8) of the wave-shaped steel plate retainer (5) are each a curved surface in an arc shape. A point of contact between the pocket (8) and a ball (4) in the radial-direction cross section of the wave-shaped steel plate retainer (5) is positioned within a retainer pocket surface, and the radial-direction curvature radius of the retainer pocket surface is equal to or less than the circumferential-direction curvature radius of the retainer pocket surface.
F16C 33/42 - Ball cages made from wire or sheet-metal strips
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 33/51 - 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
A retainer (20) is used in a needle roller bearing (10) and is disposed on an outer circumference of an inner member (1) having an oil feed hole (32) that opens in a circumferential surface thereof, wherein: needle rollers (13) and the retainer (20) are lubricated by means of lubricating oil supplied from the oil feed hole (32); a diameter dw of the needle rollers (13) is φ1.5 to φ4; the retainer (20) is provided with a pair of annular portions (21, 21) and column portions (22) joining the pair of annular portions (21, 21) in an axial direction; and a gap CLa between the needle rollers (13) and a side surface of the column portions (22) is 0.02 to 0.08 times the diameter dw of the needle rollers 13.
This assembling device comprises a phase matching device 20 that subjects a cassette 11, which is obtained by fitting together an inside joint member 3 and a retainer 5 in a manner allowing relative rotation around the center axis Oi of the inside joint member 3, to phase matching in which the circumferential direction locations of an inside track groove 9 of the inside joint member 3 and a pocket 10 of the retainer 5 are made to match. The phase matching device 20 has a pair of moving bodies 23 that move synchronously in opposite directions from one another, and each moving body 23, while in a condition in which a (protrusion 24 that is provided to a) tip section thereof has been inserted into the pocket 10, slides along a direction orthogonally intersecting an axis-parallel plane P that includes the center axis Oi, treating said plane P as a reference.
B23P 21/00 - Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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 3/2245 - 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
A segment 10 is an injection molded product of a resin material that integrally comprises a plurality of column portions 13 arranged spaced apart in a circumferential direction, a pair of arcuate portions 11, 12 which are arranged spaced apart in an axial direction and which are linked by way of the plurality of column portions 13, and claw portions 15, 16 provided on the column portions 13, wherein a circumferential angle θ corresponding to a circumferential dimension of the segment 10 is at least equal to 5° and at most equal to 30°.
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
Provided is a tapered roller bearing with which it is possible to remove a connecting member such as a wire after bearing installation, even if an inner ring assembly is integrated by the connecting member, and which can achieve roller guidance. This tapered roller bearing (1) comprises a detachable fall-out prevention member (32) that prevents radially-outward falling out of a tapered roller (15) accommodated in a pocket (16) having a first guide pawl extending to the inner diameter side of a retainer segment (20). The fall-out prevention member (32) engages with an outer diameter surface and a large-diameter side surface of a large-diameter side arc-shaped part (22) of the retainer segment (20). The retainer segment (20) and the fall-out prevention member (32) are connected by a connecting member (25).
A tapered roller bearing (1) includes an inner wheel and an outer wheel (11, 12); a plurality of tapered rollers (15) interposed between the inner wheel and the outer wheel (11, 12); and a holder (17) that holds the tapered rollers (15). The holder (17) includes a plurality of holder segments (20) arranged in a ring shape. The holder segments (20) each have a pocket for holding a predetermined number of the tapered rollers (15). The holder segments (20) are each equipped with a plurality of pillar sections extending in an axial direction, and a pair of connecting sections that extend in a circumferential direction to connect the plurality of pillar sections together. A protrusion (29) protruding radially outward and extending in the circumferential direction is provided at both ends of the holder segments (20) in the axial direction thereof. The protrusions (29) each have a guide surface (29a) that is guided by an outer raceway surface (14).
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
F16C 33/36 - RollersNeedles with bearing-surfaces other than cylindrical, e.g. taperedRollersNeedles with grooves in the bearing surfaces
A holder segment (20) of a tapered roller bearing comprises: a plurality of columnar parts (23) extending in the axial direction; and a pair of arc parts (21, 22) extending in the circumferential direction and linking the respective columnar parts (23). The plurality of columnar parts (23) and the pair of arc parts (21, 22) form pockets (16) that hold tapered rollers between adjacent columnar parts (23, 23). In the arc parts (21, 22) or the columnar parts (23), surfaces (sf) forming the pockets (16) are inclined with respect to the radial direction in the pockets (16) of the holder segment (20). All or a portion of corner portions (Cr) in each of the pockets (16) has a roundness shape that gradually becomes larger toward one side or the other side in the radial direction.
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
The rolling bearing (1) according to the present invention is interposed between an elliptical cam (4) and a flex spline (3) in a wave reduction gear (HD). The rolling bearing (1) comprises: an inner ring (5) that can be elliptically deformed through engagement with the elliptical cam (4); an outer ring (6) that can be elliptically deformed in association with elliptical deformation of the inner ring (5); and a plurality of rolling bodies (9) that are interposed between the inner ring (5) and the outer ring (6). At least one of the inner ring (5) and the outer ring (6) is subjected to a surface-hardening treatment in which an element is caused to permeate the surface of a raw material.
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
F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
80.
BEARING DEVICE WITH SENSOR, AND SPINDLE DEVICE FOR MACHINE TOOL
In this bearing device with a sensor, configured such that a preload is transmitted to a first inner race (31), a first rolling element (32), a first outer race (30), an outer race spacer (26), a second outer race (35), a second rolling element (37), and a second inner race (36), a pressing force in a direction causing the first outer race (30) and the second outer race (35) to approach one another is applied to an axial direction end surface of the first outer race (30) on the opposite side to the second outer race (35) and to an axial direction end surface of the second outer race (35) on the opposite side to the first outer race (30), and the magnitude of the pressing force is set to be larger than the preload.
Provided is a rolling bearing device with which it is possible to ensure lubrication durability in grease lubrication even under high-speed rolling conditions and to suppress any increase in temperature during a warm-up operation. This rolling bearing device 20 comprises: angular ball bearings 1 having an inner race 2, an outer race 3, a plurality of balls 4 that are interposed between the inner race 2 and the outer race 3, and a grease composition 7 that is sealed into a bearing space between the inner race 2 and the outer race 3, the grease composition 7 including a base oil that has a dynamic viscosity at 40°C of less than 120 mm2/s and a thickener that comprises a urea compound, and the grease composition 7 having a mixture consistency of 230-300 as measured in conformance with JIS K 2220; and a lubrication oil feeding mechanism 11 for feeding a lubrication oil into the bearing space in the angular ball bearings 1 and supplying the lubrication oil to orbital surfaces.
F16C 33/66 - Special parts or details in view of lubrication
C10M 107/02 - Hydrocarbon polymersHydrocarbon polymers modified by oxidation
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
C10M 169/02 - Mixtures of base-materials and thickeners
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
F16N 7/36 - 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 feed by pumping action of the member to be lubricated or of a shaft of the machineCentrifugal lubrication
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
This bearing device (1) is configured such that: a cylindrical inter-outer ring-seat (26) axially sandwiched between a first outer ring (32) of a first bearing (24) and a second outer ring (36) of a second bearing (25) has a dual structure composed of an outer loop (26a) and an inner loop (26b); a circuit (30) provided in an internal space of the inter-outer ring-seat (26) is divided into a plurality of partial circuits; and a circuit board (30a) on which the partial circuits are mounted is disposed such that the mounting surface thereof is parallel to the axial direction of the inter-outer ring-seat (26) and is fixed while a portion of the board is fitted to a groove (26e) provided in the inner loop (26b).
A production method for a nut 5 used in a ball screw comprising a screw shaft 3 that has a helical ball rolling groove 3a formed on the outer peripheral surface thereof, the nut 5 that has a helical ball rolling groove 5a formed on the inner peripheral surface thereof, said ball rolling groove 5a facing the ball rolling groove 3a of the screw shaft 3, and a plurality of balls 9 that are disposed in a ball rolling passage 7 formed by both the ball rolling grooves 3a, 5a, wherein the nut 5 has, on the inner peripheral surface thereof, a ball circulation groove 20 for returning the balls 9 to the start point from the end point of the ball rolling passage 7, said production method characterized in that: at a ball circulation groove formation step for forming the ball circulation groove 20, the ball circulation groove 20 and a phase reference S are simultaneously formed on a blank M of the nut 5 by plastic working; and a ball rolling groove formation step for forming the ball rolling groove 5a by using the phase reference S is performed.
An electric oil pump (electric fluid pump) 1 comprises: a motor unit 2; a pump unit 3; an intake-side flow path (intake-side counter port 65) through which oil before compressed by the pump unit 3 flows; an ejection-side flow path (ejection-side counter port 66) through which oil after compressed by the pump unit 3 flows; a relief conduit 67 making the intake-side counter port 65 and the ejection-side counter port 66 communicate with each other; and a relief valve 71 disposed inside the relief conduit 67 and opened when a fluid pressure of the ejection-side flow path becomes a prescribed value or more. The relief conduit 67 and the relief valve 71 are disposed in a region between the motor unit 2 and the pump unit 3 in an axial direction.
F04C 15/06 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F04C 2/10 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
F04C 14/26 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels
This powder magnetic core is composed of: soft magnetic particles; and an insulating material that is provided between the soft magnetic particles. The surface of this powder magnetic core is covered with a coating material of a compound that contains siloxane. The interior portion of this powder magnetic core is impregnated with the coating material. This powder magnetic core has a density of 5.8 g/cm3 or more.
H01F 1/147 - Alloys characterised by their composition
H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
86.
BEARING DEVICE AND SPINDLE DEVICE WITH BEARING DEVICE
This bearing device comprises a first bearing (5a), a spacer (6), and a second bearing (5b) aligned along an axial direction on an outer circumference of a main shaft (4). Each of the first bearing (5a) and the second bearing (5b) comprises an inner ring (5ia, 5ib), an outer ring (5ga, 5gb), and a plurality of rolling elements (Ta, Tb). The spacer (6) comprises an inner ring spacer (6i) between two inner rings (5ia, 5ib), and an outer ring spacer (6g) between two outer rings (5ga, 5gb). Of the inner ring spacer (6i) and the outer ring spacer (6g), the fixed-side spacer is divided into a first member (A) and a second member (B), and a circuit board (33) is disposed in a space therebetween.
F16C 19/54 - Systems consisting of a plurality of bearings with rolling friction
B23B 19/02 - Working-spindlesFeatures relating thereto, e.g. supporting arrangements
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 33/66 - Special parts or details in view of lubrication
F16C 35/12 - Rigid support of bearing unitsHousings, e.g. caps, covers for spindles with ball or roller bearings
Provided is a ball screw device comprising: a ball screw shaft having thread grooves provided in the outer circumferential surface thereof; a nut member which has thread grooves provided in the inner circumferential surface thereof and into which the ball screw shaft is inserted; a plurality of balls which fit between the thread grooves of the ball screw shaft and the thread grooves of the nut member; and a lock mechanism that restricts the rotation of the nut member. In a target position in the axial direction, a ball screw is retained in a locked state without a supply of electricity.
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
F16D 27/01 - Magnetically-actuated clutchesControl or electric circuits therefor with permanent magnets
F16D 27/04 - Magnetically-actuated clutchesControl or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces
F16D 55/06 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by moving discs or pads away from one another against radial walls of drums or cylinders without self-tightening action
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
H02K 7/06 - Means for converting reciprocating motion into rotary motion or vice versa
H02K 7/102 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
This mechanical component is made of steel that is subjected to quenching and tempering, the mechanical component comprising a carbonitrided layer on the surface thereof. The steel contains 0.13-0.58 mass% inclusive of C, 0.15-0.35 mass% inclusive of Si, 0.6-1.1 mass% inclusive of Mn, less than 0.025 mass ppm of P, less than 0.025 mass ppm of S, 1.2 mass% or less of Cr, 0.3 mass% or less of Mo, 0.25 mass% of V, and 0.25 mass% of Ni, the balance being Fe and unavoidable impurities. The average carbon concentration in the steel on the surface is 0.6 mass% or greater. The nitrogen concentration in the steel on the surface is 0.10 mass% or greater.
C21D 9/36 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for ballsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for rollers
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
C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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 this rolling bearing, a plurality of balls interposed between an inner and an outer race are held by a cage, and a seal member (6) that closes off a bearing space between the inner race and the outer race is attached to the outer race. A seal groove (7) is formed in the circumferential direction on the outer circumferential surface of the inner race, and the seal member (6) is a contact seal having a lip (15) that is in contact with the seal groove (7). An outside groove wall surface (7c) of the seal groove (7) is formed on an inclined plane inclined on the outer diameter side toward the outer side in the axial direction. The seal member (6) is formed in a round shape in which a tip (15c) of the lip (15) is in contact with the outside groove wall surface (7c) of the seal groove (7) at a contact angle of 80-100°. The angle of inclination (I) of the outside groove wall surface (7c) with respect to the axial direction is 55-65°.
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
C12N 5/071 - Vertebrate cells or tissues, e.g. human cells or tissues
B05C 1/02 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
B05C 5/00 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
B05C 11/10 - Storage, supply or control of liquid or other fluent materialRecovery of excess liquid or other fluent material
B05D 1/26 - Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
B05D 1/36 - Successively applying liquids or other fluent materials, e.g. without intermediate treatment
B05D 3/00 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
B05D 7/00 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
C12N 5/077 - Mesenchymal cells, e.g. bone cells, cartilage cells, marrow stromal cells, fat cells or muscle cells
C12N 5/10 - Cells modified by introduction of foreign genetic material, e.g. virus-transformed cells
Provided is an insulated rolling bearing having an insulating coating on the outer peripheral surface of an outer ring or another such location, the insulated rolling bearing being exceptional in terms of properties for preventing electrolytic corrosion. This insulating rolling bearing 1 comprises an inner ring 2, an outer ring 3, raceway surfaces that are formed on the outer peripheral surface of the inner ring 2 and the inner peripheral surface of the outer ring 3, and a plurality of balls 4 that are interposed between the raceway surfaces, the outer peripheral surface 3a of the outer ring 3 having a resin coating 6 (insulating coating), and the resin coating 6 in the insulated rolling bearing 1 being composed of a resin composition having an insulation resistance value of 2000 MΩ or greater and a capacitance of10 nF or lower, the resin composition containing a polyphenylene sulfide resin, glass fibers, an inorganic filler having a thermal conductance of 10 W/m·K or greater, and a thermoplastic elastomer.
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 19/26 - 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 19/06 - 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 solid-lubricated rolling bearing (1) comprises an outer race (2), an inner race (4), a plurality of rolling elements (6) interposed between the outer race (2) and the inner race (4), and a solid lubricating agent (10) separating the rolling elements (6) from one another in a circumferential direction. A volume ratio of the solid lubricating agent (10) occupying a bearing internal space between the outer race (4) and the inner race (2) is set to 40 to 60%. The solid lubricating agent (10) is guided on at least one of an inner diameter surface (2a) of the outer race (2) and an outer diameter surface (4a) of the inner race (4).
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
94.
GREASE COMPOSITION, ROLLING BEARING, AND LUBRICATION METHOD
Provided are: a grease composition that achieves low noise together with high-temperature, high-speed durability; and a rolling bearing in which the grease composition is encapsulated. The grease composition 7 contains a base oil, a thickener, and an additive. The base oil is a mixed oil of a synthetic hydrocarbon oil and an ester oil. The thickener is an aliphatic diurea compound. The initial acid value of the grease composition is 2.0 mg KOH/g or more. The additive contains the elements sulfur (S), phosphorus (P), and zinc (Zn), and the total amount of these elements contained in the grease composition 7 is 0.50 mass% or more relative to the total amount of the grease composition.
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 107/02 - Hydrocarbon polymersHydrocarbon polymers modified by oxidation
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 30/10 - Inhibition of oxidation, e.g. anti-oxidants
C10N 40/00 - Specified use or application for which the lubricating composition is intended
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
A bearing device (1) comprises a bearing (2) and an acceleration sensor (15). The bearing (2) includes an outer race (3), an inner race (4), and rolling elements (8). The acceleration sensor (15) detects vibrations of the bearing (2). A first mating element (33A) is formed in a fixed race integral member which includes a fixed race, this being either the outer race (3) or the inner race (4), and which is integrated with the fixed race. The first mating element (33A) is at least one of a recessed portion and a projecting portion. The acceleration sensor (15) is fixed to the fixed race integral member.
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
A hydrodynamic bearing (bearing sleeve 8) is equipped with a sintered body in which dynamic pressure-generating parts A1, A2 are die-formed on the inner-circumferential surface thereof. The dynamic pressure-generating parts A1, A2 have a plurality of dynamic pressure grooves G1 which extend in a direction which is angled relative to the circumferential direction, and a plurality of inclined hill sections G3 which are provided between the plurality of dynamic pressure grooves G1 in the circumferential direction. The circumferential direction width h[mm] of each inclined hill section G3 and the dynamic pressure groove G1 depth Hf[μm] adjacent to said hill section G3 on one side thereof in the circumferential direction satisfy 0.1
The objective of the present invention is to make it possible to avoid contraction of an inner diameter surface of an inner race of a rolling bearing even if a magnetic ring of a magnetic rotation sensor is coupled to an outer circumferential portion of the inner race, and to improve the reusability of the magnetic ring when replacing the inner race, while enabling the outer circumferential portion of the inner race to be coupled to the magnetic ring even if the width of the inner race is small. In order to achieve this objective, a hook member (20) formed in an annular shape using a resin is provided. An outer circumferential groove (12a) extending in a circumferential direction is formed in an outer circumferential portion (12) of an inner race (3). The hook member (20) includes a protruding portion (25) that is engaged with the outer circumferential groove (12a) of the inner race (3). A metal core (18) is retained by the hook member (20).
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 claw pole electricity generator (4) includes a stator (10) provided in a sensor unit (5), and a magnetic ring (11) fixed to a rotating member (1). A sensor board (12) is accommodated in an opening portion (13) of the sensor unit (5). A yoke (20) has a plurality of cutout portions (35) which expose a portion of an internal coil (22) to the outside of the yoke (20), and which communicate with the opening portion (13). The cutout portions (35) are disposed in a plurality of locations that are spaced apart in a circumferential direction. The sensor board (12) and the coil (22) can be protected by injecting a sealing material (14) from the opening portions (13).
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 ball bearing that has excellent low torque performance without using a holder with a special shape. This ball bearing comprises an inner race 2 having an inner race track groove on the outer circumference thereof, an outer race 3 having an outer race track groove on the inner circumference thereof, balls 4 interposed between the inner race track groove and the outer race track groove, and a holder 5 that holds the balls 4. The number Z of the balls 4 satisfies the condition of formula (1) below. (1): Z ≤ ((π × Dp)/2Da) where Z is the number of the balls 4 (Z is an integer of three or more), Dp is the pitch diameter of the balls 4 [unit: mm], and Da is the diameter of the balls 4 [unit: mm].
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
F16J 15/3204 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
F16J 15/324 - Arrangements for lubrication or cooling of the sealing itself
A power supply device (17) comprises a first circuit (61) and a converter (53). The first circuit (61) converts alternating-current voltage to a first direct-current voltage and outputs the first direct-current voltage. The converter (53) outputs a second direct-current voltage produced by adjusting the first direct-current voltage to a first voltage range to an electronic circuit (54). The input voltage of the converter (53) is set to a second voltage range. The first circuit (61) converts the alternating-current voltage to a first direct-current voltage adjusted to the second voltage range.
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
G05F 3/16 - Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
H02K 11/35 - Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis
H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 7/10 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage
H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
patents
