WO2022138772A1 - 転がり軸受 - Google Patents
転がり軸受 Download PDFInfo
- Publication number
- WO2022138772A1 WO2022138772A1 PCT/JP2021/047719 JP2021047719W WO2022138772A1 WO 2022138772 A1 WO2022138772 A1 WO 2022138772A1 JP 2021047719 W JP2021047719 W JP 2021047719W WO 2022138772 A1 WO2022138772 A1 WO 2022138772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rolling bearing
- surface coating
- resin
- ring
- solid lubricant
- Prior art date
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 94
- 239000011347 resin Substances 0.000 claims abstract description 94
- 238000000576 coating method Methods 0.000 claims abstract description 82
- 239000011248 coating agent Substances 0.000 claims abstract description 81
- 239000007787 solid Substances 0.000 claims abstract description 29
- 239000000314 lubricant Substances 0.000 claims abstract description 28
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 23
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 23
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 5
- 229920002312 polyamide-imide Polymers 0.000 claims description 49
- 239000004962 Polyamide-imide Substances 0.000 claims description 48
- 230000005540 biological transmission Effects 0.000 claims description 9
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 claims description 6
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 3
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 description 16
- 239000003795 chemical substances by application Substances 0.000 description 12
- 230000013011 mating Effects 0.000 description 9
- 238000010304 firing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000016571 aggressive behavior Effects 0.000 description 6
- 229910000410 antimony oxide Inorganic materials 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000007788 roughening Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000026731 phosphorylation Effects 0.000 description 4
- 238000006366 phosphorylation reaction Methods 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 208000028659 discharge Diseases 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002356 laser light scattering Methods 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—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
- F16C19/06—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 or balls
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/62—Selection of substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/30—Fluoropolymers
- F16C2208/32—Polytetrafluorethylene [PTFE]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/60—Polyamides [PA]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/80—Thermosetting resins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/54—Surface roughness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/60—Thickness, e.g. thickness of coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/65—Gear shifting, change speed gear, gear box
Definitions
- the present invention relates to rolling bearings, and more particularly to rolling bearings for automobiles, which are applied to support shafts, motor shafts, etc. of automobile transmissions.
- Patent Document 1 a predetermined film is formed on the outer diameter surface of the outer ring, which is the fitting surface of the housing.
- This film is a fired film containing an organic binder composed of a base material and a curing agent, a solid lubricant powder, and a friction and wear adjusting agent. Since this coating is softer than common housing materials (such as aluminum alloys), creep will prevent the housing from wearing even if the fixed ring rubs against the housing.
- antimony oxide is used as a friction and wear adjusting agent in order to obtain durability and wear resistance without wearing the housing.
- antimony oxide due to its harmfulness, antimony oxide was designated as Class 2 of the Specified Chemical Substance Disorder Prevention Regulations in 2017, and it is obligatory to measure the working environment, install emission control devices, and perform special health examinations. It is a very difficult substance to handle. Therefore, there is room for improvement in the above-mentioned coating film in terms of handleability.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a rolling bearing having excellent handleability and excellent creep resistance.
- the rolling bearing of the present invention includes an inner ring and an outer ring which are raceway rings, and a plurality of rolling elements interposed between the inner and outer rings, and the outer ring is fitted to a fixed housing or the inner ring is a fixed shaft.
- the rolling bearing is a rolling bearing that has a surface coating on the outer ring outer diameter surface or the inner ring inner diameter surface that is the fitting surface with the fixed housing or the fixed shaft. It contains a binder containing two or more types of thermosetting resins having different average molecular weights and a solid lubricant, and the solid lubricant is characterized by containing molybdenum disulfide, polytetrafluoroethylene (PTFE) resin, and graphite. do.
- PTFE polytetrafluoroethylene
- thermosetting resins are characterized by comprising a polyamide-imide (PAI) resin A having a weight average molecular weight of 10,000 or more and 30,000 or less and a PAI resin B having a weight average molecular weight of 5,000 or more and less than 10,000.
- PAI polyamide-imide
- the mass ratio of the PAI resin A to the PAI resin B is 20:80 to 50:50.
- the solid lubricant is characterized by containing the PTFE resin in a mass ratio of 2 to 6 and molybdenum disulfide in a mass ratio of 7 to 12, when the graphite content is 1.
- the ratio of the content of the solid lubricant to the content of the binder is 0.2 to 0.6.
- the arithmetic mean roughness Ra of the surface on which the surface coating is formed is 0.5 ⁇ m or less, and the sharpness Sk is 1 or more.
- thermosetting resins are composed of PAI resin A having a weight average molecular weight of 10,000 or more and 30,000 or less and PAI resin B having a weight average molecular weight of 5,000 or more and less than 10,000, and the mass ratio of the PAI resin A to the PAI resin B.
- the solid lubricant contains the PTFE resin in a mass ratio of 2 to 6 and the molybdenum disulfide in a mass ratio of 7 when the content of the graphite is 1.
- the ratio of the content of the solid lubricant to the content of the binder is 0.2 to 0.6, and the arithmetic mean roughness Ra of the surface on which the surface film is formed is 0.5 ⁇ m or less.
- the sharpness Sk is 1 or more.
- the surface on which the surface film is formed is a surface treated with manganese phosphate or zinc phosphate.
- the film thickness ratio (h / H) is It is characterized by being 1.54 or more.
- the rolling bearing of the present invention has a surface coating on the outer ring outer diameter surface or the inner ring inner diameter surface which is the fitting surface with the fixed housing or the fixed shaft, and the surface coating is two or more types of thermosetting resins having different average molecular weights.
- the solid lubricant contains molybdenum disulfide, PTFE resin, and graphite, so that the aggression to the fixed housing and the solid shaft, which are mating materials, is reduced, and the surface coating is formed. It is possible to achieve both low friction resistance and wear resistance. Further, since the surface coating does not contain antimony oxide, which is difficult to handle, it is excellent in handleability and can exhibit excellent creep resistance.
- thermosetting resins are composed of PAI resin A having a weight average molecular weight of 10,000 or more and 30,000 or less and PAI resin B having a weight average molecular weight of 5,000 or more and less than 10,000, the firing temperature is 150 ° C. or less and the firing time is 30 minutes or less. It can be cured under the above conditions, and changes in bearing dimensions can be prevented.
- the arithmetic mean roughness Ra of the surface on which the surface coating is formed is 0.5 ⁇ m or less and the sharpness Sk is 1 or more, it is easy to suppress the peeling of the surface coating, which in turn improves creep resistance. Connect.
- the film thickness ratio (h / H) is 1. Since it is 54 or more, the occurrence of creep itself can be suppressed, for example, in a bearing used under general load conditions.
- the rolling bearing 1 of FIG. 1 is used, for example, in a transmission of an automobile.
- the rolling bearing 1 includes an inner ring 2 and an outer ring 3 which are raceway rings, and a plurality of balls (rolling elements) 4 interposed between the inner and outer rings.
- the balls 4 are aligned and held at regular intervals by the cage 5.
- the bearing space around the ball 4 is filled with grease 7, and the bearing space is sealed by the sealing member 6.
- both the inner ring 2 and the outer ring 3 are made of steel. Any material generally used as a bearing material can be used as the steel material. For example, high carbon chrome bearing steel (SUJ1, SUJ2, SUJ3, SUJ4, SUJ5, etc .; JIS G4805), carburized steel (SCr420, SCM420, etc .; JIS G4053), stainless steel (SUS440C, etc .; JIS G4303), cold. Rolled steel or the like can be used. Further, the above-mentioned steel material or ceramic material can be used for the ball 4.
- high carbon chrome bearing steel SUJ1, SUJ2, SUJ3, SUJ4, SUJ5, etc .; JIS G4805
- carburized steel SCr420, SCM420, etc .
- JIS G4053 carburized steel
- stainless steel SUS440C, etc .
- JIS G4303 stainless steel
- a rotary shaft 9 (for example, a rotary shaft provided in a transmission) is inserted into a shaft hole of a rolling bearing 1 formed by an inner ring inner diameter surface 2a. Further, the outer ring outer diameter surface 3a is fitted to the housing 10 (for example, a part of the transmission case).
- the housing 10 is made of, for example, an aluminum alloy or aluminum.
- the rolling bearing 1 is an inner ring rotation type bearing in which an outer ring 3 is fitted in a fixed housing, an inner ring 2 is a rotary ring, and an outer ring 3 is a fixed ring.
- the rolling bearing 1 of the present invention has an excellent creep resistance because the surface coating 8 described later is formed on the outer ring outer diameter surface 3a.
- the surface coating 8 does not contain antimony oxide.
- the creep resistance includes the meaning of suppressing the wear of the mating material and the wear of the coating film itself.
- FIG. 2 shows a schematic cross-sectional view of the outer diameter surface of the outer ring.
- the surface coating 8 is formed on the outer ring outer diameter surface 3a, and the outer ring outer diameter surface 3a on which the surface coating 8 is formed is surface-treated.
- the surface coating 8 contains a binder (B) containing two or more types of thermosetting resins having different average molecular weights and a solid lubricant, and in particular, molybdenum disulfide (MoS) as a solid lubricant. 2 ), PTFE resin, and graphite (C) are essential.
- MoS molybdenum disulfide
- PTFE resin PTFE resin
- graphite (C) are essential.
- the content of the above three components of the solid lubricant is not particularly limited, but it is preferable that the content of the above three components increases in the order of graphite, PTFE resin, and molybdenum disulfide in terms of mass ratio. Further, when the graphite content is 1, it is more preferable that the PTFE resin is contained in a mass ratio of 2 to 6 and molybdenum disulfide is contained in a mass ratio of 7 to 12. Molybdenum disulfide has a layered lattice structure as its lubrication mechanism, and is known to easily shear into a thin layer by sliding motion to reduce frictional resistance, and contains the largest amount of molybdenum disulfide in terms of mass ratio. Therefore, the low friction property can be further improved.
- the average particle size of each component of the solid lubricant is preferably 20 ⁇ m or less in consideration of the film thickness of the surface coating and wear resistance. More preferably, the average particle size of molybdenum disulfide is 1 ⁇ m to 20 ⁇ m, the average particle size of the PTFE resin is 1 to 10 ⁇ m, and the average particle size of graphite is 1 to 10 ⁇ m.
- the average particle size can be measured by using, for example, a particle size distribution measuring device using a laser light scattering method or the like.
- a general PTFE resin represented by-(CF 2 -CF 2 ) n- can be used, and a perfluoroalkyl ether group (-C p F 2p -O-" can be used in the general PTFE resin.
- P is an integer of 1-4
- a modified PTFE resin having a polyfluoroalkyl group (H (CF 2 ) q ⁇ ) (q is an integer of 1-20) or the like can also be used.
- These PTFE resin and modified PTFE resin may be obtained by adopting either a suspension polymerization method for obtaining a general molding powder or an emulsion polymerization method for obtaining a fine powder.
- a PTFE resin obtained by heating and firing at a melting point or higher thereof can be used.
- a powder obtained by irradiating a heated and fired powder with ⁇ -rays or an electron beam can also be used.
- the shape of graphite includes flaky, granular, spherical, etc., but any of them can be used.
- the surface coating may contain other solid lubricants such as tungsten disulfide in addition to the above three components.
- the binder B of the surface coating 8 shown in FIG. 2 contains two or more types of thermosetting resins having different average molecular weights, and if necessary, contains a curing agent.
- a thermosetting resin having a large average molecular weight for example, a weight average molecular weight of 10,000 or more and 30,000 or less
- a thermosetting resin having a small average molecular weight particularly contributes to the enhancement of adhesion
- a thermosetting resin having a small average molecular weight particularly contributes to the reduction of wear of the mating material.
- thermosetting resins contained in the binder B may have different average molecular weights, and PAI resin, polyimide (PI) resin, phenol resin, epoxy resin, unsaturated polyester resin, and the like can be used. Among these, it is preferable to use PAI resin or PI resin from the viewpoint of having high strength.
- the binder B it is particularly preferable to combine two types of PAI resins having different weight average molecular weights and a curing agent.
- the curing agent is not particularly limited, but for example, in the base binder of PAI resin, it is preferable to use an epoxy resin as the curing agent.
- the two types of PAI resins include a combination of PAI resin A having a weight average molecular weight of 10,000 or more and 30,000 or less (preferably 10,000 or more and 25,000 or less) and PAI resin B having a weight average molecular weight of 5,000 or more and less than 10,000.
- the PAI resin A having a large molecular weight contributes to the enhancement of the adhesiveness by imparting toughness
- the PAI resin B having a small molecular weight contributes to the reduction of wear of the mating material.
- the mass ratio of PAI resin A and PAI resin B is preferably 20:80 to 80:20, and more preferably 20:80 to 50:50 from the viewpoint of creep resistance.
- thermosetting resin when coating a surface coating using a thermosetting resin, firing is required for curing, and there is a possibility that problems may occur due to a high firing temperature or a long firing time.
- a curing agent such as an epoxy resin
- the thermosetting resin can be cured at a relatively low temperature in a short time.
- the firing conditions can be set to 150 ° C. or lower and within 30 minutes, and firing is possible at a temperature near the tempering temperature of the bearing, so that deformation of the bearing can be prevented.
- PAI resins having different weight average molecular weights may be further combined with thermosetting resins having different weight average molecular weights (for example, PAI resins).
- the curing agent may be combined with two or more kinds of PI resins having different weight average molecular weights.
- the ratio of the content of the solid lubricant to the content of the binder is preferably 0.2 to 1 by mass ratio. If the mass ratio is less than 0.2, the wear resistance of the surface coating 8 may decrease, and if the mass ratio is larger than 1, the retention of the solid lubricant decreases and the aggression to the mating material increases. There is a risk of The mass ratio is more preferably 0.2 to 0.6 from the viewpoint of creep resistance.
- the content of the binder also includes a curing agent such as an epoxy resin.
- various fillers can be added to the surface coating 8 as long as the effects of the present invention are not impaired.
- a fluorine-based surfactant or the like may be blended in order to promote the dispersion of the PTFE resin.
- the surface on which the surface coating 8 is formed is ground-treated in order to enhance the adhesion between the surface coating 8 and the raceway ring.
- a phosphorylation treatment such as a manganese phosphate treatment, a zinc phosphate treatment, or a calcium phosphate treatment is performed.
- the treatment liquid used for the manganese phosphate treatment may contain other elements such as zinc and calcium.
- the raceway ring as a base material is immersed in the treatment liquid, or the treatment liquid is sprayed on the surface of the raceway ring.
- the film thickness of the phosphate film obtained by the phosphorylation treatment is, for example, 1 ⁇ m to 5 ⁇ m.
- the crystal grains are small, dense and easy to be uniform, and the surface sharpness is relatively high.
- the arithmetic average roughness Ra is preferably 0.1 ⁇ m to 1.0 ⁇ m, and more preferably 0.1 ⁇ m to 0.5 ⁇ m.
- the arithmetic mean roughness Ra is a numerical value calculated in accordance with JIS B0601, and is measured using a contact type or non-contact type surface roughness meter or the like.
- the surface treated surface 8a preferably has a sharpness Sk of 1 to 10, and more preferably a sharpness Sk of more than 3 and 10 or less.
- Sku is a surface texture parameter defined in ISO25178, and is a parameter indicating the height with respect to the reference surface when the average surface of the heights of the measured regions is used as the reference surface.
- Suku 3 it means that the surface unevenness has a normal distribution
- Suku> 3 it means that there are many sharp peaks and valleys on the surface
- Suku ⁇ 3 it means that the surface is flat. show.
- a phosphorylation treatment is performed as a base treatment, and a phosphate coating is interposed between the surface coating 8 and the outer ring 3, but the present invention is not limited to this, and the outer diameter surface 3a of the outer ring is roughened as a base treatment.
- the surface coating 8 may be formed directly on the surface of the surface by subjecting it to a chemical treatment or the like. Also in this case, it is preferable that the above-mentioned arithmetic mean roughness Ra and sharpness Sk satisfy each numerical range.
- a mechanical roughening method such as a shot blast method, an electrical roughening method such as glow discharge or plasma discharge treatment, or a chemical roughening method such as alkaline treatment can be adopted. Even when a phosphate film is interposed, the outer ring outer diameter surface 3a may be subjected to the above-mentioned roughening treatment, if necessary.
- the film thickness h of the surface coating 8 is set to, for example, 10 ⁇ m to 50 ⁇ m.
- the film thickness h [unit: ⁇ m] has a predetermined film thickness ratio (h / H) when the minimum wall thickness in the radial direction of the raceway ring on which the surface coating film 8 is formed is H [unit: mm]. It is preferable to set it so as to be equal to or higher than the threshold value.
- the threshold value As shown in Examples described later, in the present invention, it has been found that a linear relationship is established between the film thickness ratio and the creep rate, and it is found that the creep rate decreases as the film thickness ratio becomes larger. Based on this finding, the occurrence of creep itself can be suppressed by setting the film thickness ratio at which the creep rate becomes zero, that is, the film thickness h at or above a predetermined threshold value.
- the rolling bearing of the present invention has excellent creep resistance, it is suitable for bearings in which creep is a concern. For example, it is applied to bearings used in automobile transmissions, bearings for motor shafts, and the like.
- the configuration of the rolling bearing of the present invention is not limited to the configuration shown in FIG.
- the rolling bearing of the present invention includes a helical roller bearing, a cylindrical roller bearing, a self-aligning roller bearing, a needle roller bearing, a thrust cylindrical roller bearing, a thrust tapered roller bearing, and a thrust needle. It can also be applied to roller bearings, thrust self-aligning roller bearings, etc.
- an inner ring rotation type bearing is shown as a rolling bearing, but it can also be applied to an outer ring rotation type bearing.
- the above-mentioned surface coating is formed on the inner ring inner diameter surface which is the fitting surface with the fixed shaft.
- Example 1 and Comparative Examples 2 to 3 each component of the binder and the solid lubricant was dispersed in N-methyl-2-pyrrolidone at the blending ratios shown in Table 2 to prepare a coating liquid.
- Epoxy resin was used as the curing agent in Table 2.
- the weight average molecular weight (Mw) of the PAI resin A in Table 2 was 20000, and the weight average molecular weight (Mw) of the PAI resin B was 5600.
- the outer diameter surface of the outer ring of the test bearing was treated with manganese phosphate as a base treatment, and then the above coating liquid was applied. Then, it was fired at 120 ° C. for 30 minutes to form a surface coating on the outer diameter surface of the outer ring.
- the film thickness of the surface coating was about 20 ⁇ m.
- Comparative Example 1 a bearing (standard bearing) having no surface coating was used as the test bearing.
- the outer ring of the test bearing obtained above was fitted into a housing made of aluminum alloy, and a creep wear test was carried out under the conditions shown in Table 1 to evaluate the amount of wear.
- Table 2 The results are shown in Table 2.
- the housing wear depth in Table 2 was measured from the shape of the inner diameter surface of the housing, which is the fitting surface with the bearing.
- the amount of bearing wear was measured from the change in the outer diameter before and after the bearing test.
- the total wear is the sum of the two.
- Example 1 As shown in Table 2, the wear resistance of Example 1 in which the surface coating containing the solid lubricant of the three components was formed was significantly improved as compared with Comparative Example 1 in which the coating was not formed. Further, in Example 1, the same or better results were obtained as compared with Comparative Examples 2 and 3 having a surface coating containing antimony oxide. Since the surface coating of Example 1 does not contain antimony oxide, it is superior in handleability as compared with Comparative Examples 2 and 3.
- Example 1 A surface coating film having the same composition as that of Example 1 described above was formed on the outer diameter surface of the outer ring of the test bearing by changing the film thickness.
- the outer ring of the obtained test bearing was fitted into an aluminum alloy housing, and a creep speed test was carried out under the conditions shown in Table 4. In this test, the outer ring was marked at a predetermined circumferential position, and the position was photographed with a video camera to measure how much the outer ring rotated in one minute. The creep speed was calculated by converting the amount of movement per second. The results are shown in Table 5. Comparative Example 1 is a result of using a bearing on which no surface coating is formed. Further, the minimum wall thickness H in the radial direction of the outer ring of the deep groove ball bearing 6208 was 4.04 mm.
- FIG. 4 is a graph in which the film thickness ratio is taken on the horizontal axis and the creep speed is taken on the vertical axis.
- the relationship between the creep rate and the film thickness ratio is a linear relationship (linear function).
- y ⁇ 0.156x + 1.10 ...
- ⁇ Block on ring test> a block-on-ring test was conducted as a reference example to evaluate the composition of the surface coating.
- the ring 14 having the surface coating 13 formed on the outer diameter surface of the ring was slid on the block 12 while rotating.
- the test conditions are as shown in Table 6.
- SCM420 was used in the test of Table 7
- SUJ2 was used in the test of Table 8. After the test was completed, the amount of wear of the surface coating and the amount of block wear after 10,000 times were measured.
- Tables 7 and 8 show the composition of each surface coating in the block-on-ring test.
- the weight average molecular weights (Mw) of PAI resin A and PAI resin B in Tables 7 and 8 are the same as those in Table 2, and the weight average molecular weights (Mw) of PAI resin C in Tables 7 and 8 are 22000. there were.
- a manganese phosphate film having the same surface roughness is interposed between each surface film and the ring. The results are shown in Tables 7 and 8.
- the composition of the surface coating of Reference Example 1 shown in Table 7 is almost the same as that of Example 1 described above.
- one kind of PAI resin C is used as the thermosetting resin of the binder. From the results, the block wear amount of Reference Example 2 was larger than that of Reference Example 1, and the aggression to the mating material tended to be higher.
- the composition of the surface coating of Reference Example 3 shown in Table 8 is the same as that of Reference Example 1 described above. From the results of Reference Example 4, when the ratio of the solid lubricant in the surface coating was high, the amount of block wear increased and the aggression to the mating material tended to increase. Further, based on the results of Reference Example 5 (PAI resin A and PAI resin C), Reference Example 8 (PAI resin A alone), and Reference Example 2 (PAI resin C alone) described above, the aggression to the mating material is From the viewpoint, it can be said that it is preferable to combine PAI resin A and PAI resin B as the thermosetting resin.
- PAI resin B having a weight average molecular weight of 5,000 or more and less than 10,000 is contained in PAI resin A having a weight average molecular weight of 10,000 or more and 30,000 or less. Preferably more than the amount.
- the rolling bearing of the present invention has excellent handleability and excellent creep resistance, and is therefore suitable for bearings in which creep may occur, and is applied to, for example, bearings for automobile transmissions.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
実施例1および比較例2~3について、表2に示す配合割合で、バインダーおよび固体潤滑剤の各成分などをN-メチル-2-ピロリドンに分散させ、塗工液を調製した。表2中の硬化剤にはエポキシ樹脂を用いた。表2中のPAI樹脂Aの重量平均分子量(Mw)は20000であり、PAI樹脂Bの重量平均分子量(Mw)は5600であった。試験軸受の外輪外径面に、下地処理としてリン酸マンガン処理を施した後、上記塗工液を塗布した。その後、120℃で30分焼成して、外輪外径面に表面被膜を形成した。該表面被膜の膜厚は20μm程度であった。
上述した実施例1と同じ組成の表面被膜を、膜厚を変えて試験軸受の外輪外径面に形成した。得られた試験軸受の外輪をアルミニウム合金製のハウジングに嵌合して、表4に示す条件でクリープ速度試験を実施した。この試験では、外輪の所定の周方向位置にマーキングし、その位置をビデオカメラで撮影することで、一分間に外輪がどれだけ回転したかを測定した。クリープ速度は、その移動量を1秒あたりに換算して算出した。結果を表5に示す。なお、比較例1は、表面被膜が形成されていない軸受を用いた結果である。また、深溝玉軸受6208の外輪の径方向における最小肉厚Hは4.04mmであった。
y=-0.156x+1.10・・・(1)
上記の式(1)から、クリープ速度がゼロとなる膜厚比を算出すると7.05になる。この場合、P/C=0.4の高荷重条件下でクリープを抑制するためには、膜厚比7.05以上が必要になるといえる。
y=-0.156x+0.24・・・(2)
上記の式(2)から、クリープ速度がゼロとなる膜厚比を算出すると1.54になる。この場合、P/C=0.1の低荷重条件下でクリープを抑制するためには、膜厚比1.54以上が必要になるといえる。
以下では、参考例としてブロックオンリング試験を実施して、表面被膜の組成について評価した。ブロックオンリング試験では、図5に示すように、リング外径面に表面被膜13が形成されたリング14を回転させながらブロック12に摺動させた。試験条件は表6に示すとおりである。なお、リングとして、表7の試験ではSCM420を用い、表8の試験ではSUJ2を用いた。試験終了後、10000回後の表面被膜の摩耗量およびブロック摩耗量を測定した。
2 内輪
2a 内輪内径面
3 外輪
3a 外輪外径面
4 玉(転動体)
5 保持器
6 シール部材
7 グリース
8 表面被膜
8a 下地処理された面
9 回転軸
10 ハウジング(固定ハウジング)
11 ブロックオンリング試験機
12 ブロック
13 表面被膜
14 リング
Claims (10)
- 軌道輪である内輪および外輪と、この内・外輪間に介在する複数の転動体とを備え、前記外輪が固定ハウジングに嵌合されるか、または前記内輪が固定軸に嵌合される転がり軸受であって、
前記転がり軸受は、前記固定ハウジングまたは前記固定軸との嵌め合い面となる外輪外径面または内輪内径面に表面被膜を有し、
前記表面被膜は、平均分子量が異なる2種以上の熱硬化性樹脂を含むバインダーと固体潤滑剤とを含み、前記固体潤滑剤は、二硫化モリブデン、ポリテトラフルオロエチレン樹脂、および黒鉛を含むことを特徴とする転がり軸受。 - 前記2種以上の熱硬化性樹脂が、重量平均分子量10000以上30000以下のポリアミドイミド樹脂Aと、重量平均分子量5000以上10000未満のポリアミドイミド樹脂Bからなることを特徴とする請求項1記載の転がり軸受。
- 前記ポリアミドイミド樹脂Aと前記ポリアミドイミド樹脂Bの質量比が、20:80~50:50であることを特徴とする請求項2記載の転がり軸受。
- 前記固体潤滑剤は、前記黒鉛の含有量を1とした場合に、前記ポリテトラフルオロエチレン樹脂を質量比2~6で含み、前記二硫化モリブデンを質量比7~12で含むことを特徴とする請求項1記載の転がり軸受。
- 前記バインダーの含有量に対する前記固体潤滑剤の含有量の割合が0.2~0.6であることを特徴とする請求項1記載の転がり軸受。
- 前記表面被膜が形成される面の算術平均粗さRaが0.5μm以下であり、かつ、尖り度Skuが1以上であることを特徴とする請求項1記載の転がり軸受。
- 前記2種以上の熱硬化性樹脂が、重量平均分子量10000以上30000以下のポリアミドイミド樹脂Aと、重量平均分子量5000以上10000未満のポリアミドイミド樹脂Bからなり、前記ポリアミドイミド樹脂Aと前記ポリアミドイミド樹脂Bの質量比が、20:80~50:50であり、
前記固体潤滑剤は、前記黒鉛の含有量を1とした場合に、前記ポリテトラフルオロエチレン樹脂を質量比2~6で含み、前記二硫化モリブデンを質量比7~12で含み、
前記バインダーの含有量に対する前記固体潤滑剤の含有量の割合が0.2~0.6であり、
前記表面被膜が形成される面の算術平均粗さRaが0.5μm以下であり、かつ、尖り度Skuが1以上であることを特徴とする請求項1記載の転がり軸受。 - 前記表面被膜が形成される面がリン酸マンガン処理またはリン酸亜鉛処理された面であることを特徴とする請求項6記載の転がり軸受。
- 前記表面被膜の膜厚をh[単位:μm]、前記表面被膜が形成される軌道輪の径方向における最小肉厚をH[単位:mm]としたとき、膜厚比(h/H)が1.54以上であることを特徴とする請求項1記載の転がり軸受。
- 自動車用トランスミッションに用いられることを特徴とする請求項1記載の転がり軸受。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237024481A KR20230124022A (ko) | 2020-12-25 | 2021-12-22 | 구름 베어링 |
EP21910912.1A EP4269826A1 (en) | 2020-12-25 | 2021-12-22 | Rolling bearing |
CN202180085652.8A CN116615611A (zh) | 2020-12-25 | 2021-12-22 | 滚动轴承 |
US18/268,242 US20240052887A1 (en) | 2020-12-25 | 2021-12-22 | Rolling bearing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020217269A JP7515829B2 (ja) | 2020-12-25 | 2020-12-25 | 転がり軸受 |
JP2020-217269 | 2020-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022138772A1 true WO2022138772A1 (ja) | 2022-06-30 |
Family
ID=82159828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/047719 WO2022138772A1 (ja) | 2020-12-25 | 2021-12-22 | 転がり軸受 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240052887A1 (ja) |
EP (1) | EP4269826A1 (ja) |
JP (1) | JP7515829B2 (ja) |
KR (1) | KR20230124022A (ja) |
CN (1) | CN116615611A (ja) |
WO (1) | WO2022138772A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0680025U (ja) * | 1993-04-26 | 1994-11-08 | エヌティエヌ株式会社 | 圧延機のロールネック用転がり軸受 |
JP2001200855A (ja) * | 2000-01-18 | 2001-07-27 | Nsk Ltd | 転がり軸受 |
JP2007002912A (ja) * | 2005-06-23 | 2007-01-11 | Nsk Ltd | 転がり軸受 |
JP2009068676A (ja) * | 2007-09-18 | 2009-04-02 | Ntn Corp | 円すいころ軸受 |
JP6338035B1 (ja) | 2016-08-26 | 2018-06-06 | 日本精工株式会社 | 転がり軸受及びその製造方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0548118Y2 (ja) | 1986-08-28 | 1993-12-20 |
-
2020
- 2020-12-25 JP JP2020217269A patent/JP7515829B2/ja active Active
-
2021
- 2021-12-22 US US18/268,242 patent/US20240052887A1/en active Pending
- 2021-12-22 EP EP21910912.1A patent/EP4269826A1/en active Pending
- 2021-12-22 WO PCT/JP2021/047719 patent/WO2022138772A1/ja active Application Filing
- 2021-12-22 CN CN202180085652.8A patent/CN116615611A/zh active Pending
- 2021-12-22 KR KR1020237024481A patent/KR20230124022A/ko unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0680025U (ja) * | 1993-04-26 | 1994-11-08 | エヌティエヌ株式会社 | 圧延機のロールネック用転がり軸受 |
JP2001200855A (ja) * | 2000-01-18 | 2001-07-27 | Nsk Ltd | 転がり軸受 |
JP2007002912A (ja) * | 2005-06-23 | 2007-01-11 | Nsk Ltd | 転がり軸受 |
JP2009068676A (ja) * | 2007-09-18 | 2009-04-02 | Ntn Corp | 円すいころ軸受 |
JP6338035B1 (ja) | 2016-08-26 | 2018-06-06 | 日本精工株式会社 | 転がり軸受及びその製造方法 |
JP2019023509A (ja) * | 2016-08-26 | 2019-02-14 | 日本精工株式会社 | 転がり軸受及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2022102497A (ja) | 2022-07-07 |
JP7515829B2 (ja) | 2024-07-16 |
US20240052887A1 (en) | 2024-02-15 |
KR20230124022A (ko) | 2023-08-24 |
EP4269826A1 (en) | 2023-11-01 |
CN116615611A (zh) | 2023-08-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109642615B (zh) | 滚动轴承及其制造方法 | |
EP2757277B1 (en) | Sliding member and sliding material composition | |
JP5841607B2 (ja) | しゅう動部材及びしゅう動材料組成物 | |
EP0695884B1 (en) | Greased rolling bearing element with solid lubricant coating | |
WO2022138772A1 (ja) | 転がり軸受 | |
JP2008180374A (ja) | 転がり軸受 | |
EP3315806A1 (en) | Bearing material, bearing and method | |
US20240337291A1 (en) | Sliding member and bearing | |
JP2017172749A (ja) | 転がり軸受用保持器および転がり軸受 | |
JP2004332899A (ja) | 固体潤滑転がり軸受 | |
JP2005097513A (ja) | 転動装置用フッ素系グリース組成物、及び、転動装置 | |
JP2006242246A (ja) | 転がり軸受 | |
JP2014234901A (ja) | 転がり軸受 | |
JP2008019965A (ja) | 遊星歯車装置及び転がり軸受 | |
JP2006250313A (ja) | 転動装置 | |
JPH084773A (ja) | 固体潤滑転がり軸受 | |
JP2007170426A (ja) | 転動装置 | |
JPH1082425A (ja) | 転がり軸受用保持器 | |
JP3160742B2 (ja) | ボールねじ | |
WO2024161674A1 (ja) | 摺動部材及び軸受 | |
WO2022215637A1 (ja) | 摺動部材および摺動体 | |
JP2013024252A (ja) | 転がり軸受装置 | |
JP7524531B2 (ja) | スラストころ軸受 | |
JP2014228099A (ja) | 転がり軸受 | |
JP2006250324A (ja) | 保持器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21910912 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18268242 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180085652.8 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 20237024481 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2021910912 Country of ref document: EP Effective date: 20230725 |