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JP2004245244A |
To improve efficiency and durability while controlling manufacturing costs and also realizing stable speed change motions in a structure in which speed change is changed by making circular arc movement of oscillating frames 21 and 22.Bef...
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JP2004239110A |
To elongate service life of a centrifugal pump, at low cost and with simple structure.An impeller 3 in which a first magnet 1 is embedded faces a second magnet disposed to a motor drive shaft 4 through a partition wall 5, so that power o...
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JP2004232651A |
To provide a pressure fitting method for bearings of a small motor capable of eliminating a secondary processing after pressure fitting for facilitating the fabrication process and suppressing the cost and of being established with a mit...
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JP2004236390A |
To provide a brushless motor in which the workability and the assembling work of parts are simplified and which has a thrust bearing member having excellent reliability without the deformation of a bearing and without the leakage of a lu...
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JP2004218655A |
To provide a support structure for a continuously variable transmission in which lubricating oil passing property is improved, differential slip of a needle roller is suppressed, and the strength durability is enhanced, and to provide a ...
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JP2004211773A |
To prevent the disassembling of components during assembling.This tapered roller bearing comprises an outer ring 2 having double-row outer raceway faces 21, 22 on an inside diameter part, an inner shaft having inner raceway face 34 paire...
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JP2004197761A |
To eliminate the need for applying costly softening treatment mainly to a collar portion.The collar portion 23 subjected to carburizing heat treatment concurrently with a cylindrical portion is provided at one axial end of the cylindrica...
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JP2004519645A |
A differential drive having a drive housing ( 1 ) with a longitudinal drive axis (AG); having a drivable differential carrier ( 11 ) which is rotatably supported in the drive housing ( 1 ) by means of two rolling contact bearings ( 22, 2...
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JP2004176815A |
To simplify assembling process of a liquid bearing device that supports, in a non-contact manner, a rotating member with a film of lubricating oil formed in clearances on radial bearings.A sealing member 4 comprises a base part 4a, and a...
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JP2004176778A |
To provide a specified fixing strength by stabilizing the fixed state of a housing to a holding member.The fixed surface 7d of the housing comprises a deformation area 7d2 deformed by a specified amount to the outer diameter side accordi...
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JP2004169806A |
To provide a double row tapered roller bearing capable of preventing troubles such as burning caused by heat generation by sufficiently distributing lubricant between a tapered roller and flange portions even at a high-speed rotation.Tap...
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JP2004162913A |
To provide a method and an apparatus for stably manufacturing a good-quality rolling bearing unit for supporting wheels that miniaturizes and makes less expensive the manufacturing apparatus.A press head 34 is provided at the upper porti...
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JP2004156778A |
To provide a bearing for use in a water pump or similar apparatus and a method of assembling the bearing.The bearing has a stepped shaft 46 and a raceway 45 counterbored 64 at the fan or pulley end 60 which allows for use of a larger num...
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JP2004514844A |
A single row tapered roller bearing enables an axle shaft to rotate in an axle housing and further confines the shaft axially with respect to the housing. The bearing includes a cup that is fitted into the housing and a cone that is fitt...
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JP2004108465A |
To provide a method of manufacturing a hydrodynamic bearing device for accurately and easily manufacturing the hydrodynamic bearing device at a low cost, and to provide an assembling tool.In manufacturing the hydrodynamic bearing device,...
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JP2004510104A |
A high energy x-ray tube includes an evacuated chamber (12) containing a rotor (34) which rotates an anode (10) through a stream of electrons (A) in order to generate an x-ray beam (B). The rotor includes an outer cylindrical armature (3...
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JP2004100954A |
To provide a hydrodynamic bearing system with a minimized tolerance of a bearing gap in dynamic pressure bearing.The hydrodynamic bearing system is provided with at least one radial bearing having a shaft 1 rotatably and pivotally suppor...
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JP2004092755A |
To provide a method for simplifying assembly work and for assembling a bearing device for easily assembling even a compact bearing device, and to provide the bearing device.A coil spring 18 is compressed and a second outer ring 13b is ar...
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JP2004090745A |
To provide a stump bushing oil groove cover mounting method and an oil groove cover mounting mechanism used therefor capable of installing the oil groove cover to the stump bushing in a rational and easy manner.A stump bushing 10 has a l...
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JP2004077206A |
To effectively prevent short life separation and roller cracks caused by internal defects in strict usage conditions of a high load and high surface pressure.In a roller bearing where a plurality of rollers are arranged between inner and...
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JP2004068838A |
To provide an assembling device for a needle bearing in which the needle bearing, especially, having a bag shape of making the inner diameter side of a roller outer ring to become inside of a hollow part is industrially advantageously as...
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JP2004068985A |
To provide a method for assembling a ball bearing for assembling a ball bearing having a larger number of balls, and preventing permanent deformation of an outer ring.For disposing a plurality of balls between the outer ring 51 and an in...
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JP2004060891A |
To provide a fluid dynamic-pressure bearing simplified in fitting of a thrust plate in a shaft central part.This fluid dynamic-pressure bearing has a fixing element 12 to be inserted into a hole 11, which is formed in the shaft 4 in the ...
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JP2004053025A |
To provide a fluid dynamic-pressure bearing capable of coupling a thrust plate to a shaft by pressure stably and highly accurately even when the thrust plate is extremely thin and has a small guide coefficient.The fluid dynamic-pressure ...
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JP2004052999A |
To enhance molding accuracy and functionality of a housing.The housing 7 is molded by making a bearing sleeve 8 as an insert article. The housing 7 is made of resin and is constituted of a seal part 7a, a main body part 7b and a bottom p...
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JP2004053022A |
To provide a fluid dynamic-pressure bearing for preventing even slight abrasion in starting and stopping processes of a spindle motor.The fluid dynamic-pressure bearing has an element 12 having a spherical surface at least partially inse...
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JP2004504555A |
A method for assembling a double row angular contact rolling element bearing unit having an inner element with two raceways, and two separate outer ring pieces each with a single raceway, said outer ring pieces enclosing a gap which is w...
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JP2004028165A |
To reduce cost on a fluid bearing that supports a spindle of a motor, and that has excellent characteristics.A housing 7 is provided with a cylindrical side part 7b formed by injection-molding a metal material, and a circular seal part 7...
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JP2004028342A |
To provide a structure of a thrust roller bearing assemblable only in the normal direction to a retaining part of a casing, and to assemble to the retaining part with large dimension in the axial direction.In assembling, a folded vertica...
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JP2004025430A |
To provide a bearing puller suitable for various different sized bearings and a bearing damaged and hard to be pulled, with quick assembly and disassembly.The bearing puller is equipped with an engaging coupling body 20 and an object to ...
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JP2004019803A |
To reduce the rust proof treatment cost of a bearing, by applying an inexpensive rust proof agent prepared from petroleum to a fluorocarbon grease sealed-in bearing so as not to cause lubrication failure.According to this application met...
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JP2004011688A |
To provide an assembling method and an assembling device of a rolling bearing device capable of certainly providing a desired axial force regardless of a friction coefficient of a screw from which the shaft receives an axial force.In a s...
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JP2004003641A |
To provide a cylindrical roller bearing meeting high quality requirements and requiring reasonable manufacturing labor.The roller bearing comprises an inner ring 1 and an outer ring 2 formed as plastic injection molded components and a r...
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JP3483185B2 |
To provide a groove machining tool capable of arranging a spherical body circumferentially at substantially equal intervals and replacing the spherical body without causing any deformation to the area of the spherical body where the groo...
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JP2003336646A |
To provide a rolling bearing in which a treatment for forming a mark on a fixed side surface of a plurality of bearing ring units can independently be executed in every bearing ring units and a formation of the mark can easily be perform...
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JP2003329034A |
To prevent a coarse abnormal sound from occurring at a roller bearing 2 part on rotating of a pulley 1.The relationship of a residual clearance (x) in a roller bearing 2 with a circularity of an outer ring raceway is properly restricted,...
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JP2003329042A |
To obtain a rolling bearing which enables reliable prevention of fretting.The rolling bearing 1 is provided with a retainer 9 for evenly retaining a plurality of rolling elements 7 arranged between the inner ring track surface 3a of the ...
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JP2003314538A |
To simply form a gap of a thrust bearing at high accuracy.A bearing sleeve 8 is pushed downward together with a bearing member 2, a lower end face 8c of the bearing sleeve 8 is brought in contact with an upper end face 2b1 of a flange 2b...
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JP3459730B2 |
To accurately provide a bearing axial gap by a method wherein when an inner ring is pressed in an axle, press-in is stopped once in short of a time when the inner ring makes contact with an axle shoulder part, and a movement amount when ...
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JP2003294049A |
To provide a spindle motor equipped with the stopping mechanism that can be dismantled without destruction even in the case that the nonconformity occurs either a rotor side or a fixed side.A stop member of draft 13 of an elastic body th...
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JP2003294051A |
To provide an actuator support device for a hard disk drive which maintains constant vibration and impact relaxing characteristics and is high in reliability.The actuator support device for the hard disk drive is characterized in that it...
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JP2003294050A |
To provide a dynamic pressure bearing which can improve productivity by omitting press-fitting work of a cover member and a bearing sleeve during forming of a bearing housing, and a manufacturing method thereof.A first adhesive layer 20 ...
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JP2003294032A |
To solve a problem in a tandem type double-row ball bearing, in which there are difficulties to give uniform preload onto balls on both rows of the double-row ball bearing in spite of a difference in dimensional tolerances for respective...
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JP3457390B2 |
PURPOSE: To perform a work stably and in a mechanical manner, in a work to caulk the side on the pocket hole side of a retainer along a roller in such a state that a retainer and a roller are incorporated in the outer ring of a cylinder ...
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JP2003278750A |
To provide a roller bearing device with a shaft wherein a pair of roller bearings with pre-loads given to their outer rings by a compression coil spring is assembled against a shaft, and stable rotation without noise and vibration is acq...
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JP2003278758A |
To provide a manufacturing method of a dynamic pressure bearing device which reduces the number of required parts and simplifies a manufacturing process.This manufacturing method includes processes of: putting spherical particulates 12 f...
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JP2003269448A |
To provide a bearing device in which an outer ring of a rolling bearing is prevented from being misaligned in a radius direction at the time of assembling or tilting in regard to a shaft, in a bearing device assembled by adhering and fix...
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JP2003269446A |
To suppress bearing noise and vibrations produced in use by a structure having excellent durability, and to make rotations of a rolling bearing smooth.An outer ring 3 structuring the rolling bearing 2 is internally fixed in an inner diam...
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JP2003269511A |
To provide a vibration control device that can reduce manufacturing cost by abolishing cutting work on an outer ring holding portion after welding.The vibration control device couples both ends of a damping device comprising a brace 9 an...
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JP2003254327A |
To reduce the thermal treatment operations for integral-type thrust bearing.A holder 2 and an inner and an outer rings 3 and 4 are integrally assembled into a bearing integrated with a roll 1 in the non-quenching condition, and thereafte...
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