JP6476738B2 - 転がり軸受用グリース組成物及び転がり軸受 - Google Patents
転がり軸受用グリース組成物及び転がり軸受 Download PDFInfo
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- JP6476738B2 JP6476738B2 JP2014215463A JP2014215463A JP6476738B2 JP 6476738 B2 JP6476738 B2 JP 6476738B2 JP 2014215463 A JP2014215463 A JP 2014215463A JP 2014215463 A JP2014215463 A JP 2014215463A JP 6476738 B2 JP6476738 B2 JP 6476738B2
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- grease composition
- rolling bearing
- nhconh
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- 239000004519 grease Substances 0.000 title claims description 71
- 239000000203 mixture Substances 0.000 title claims description 61
- 238000005096 rolling process Methods 0.000 claims description 42
- 239000002562 thickening agent Substances 0.000 claims description 32
- 239000002199 base oil Substances 0.000 claims description 27
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 25
- 239000004202 carbamide Substances 0.000 claims description 25
- 239000006078 metal deactivator Substances 0.000 claims description 23
- 239000003921 oil Substances 0.000 claims description 21
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000002480 mineral oil Substances 0.000 claims description 13
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 235000010446 mineral oil Nutrition 0.000 claims description 10
- 239000004215 Carbon black (E152) Substances 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 8
- XMKLTEGSALONPH-UHFFFAOYSA-N 1,2,4,5-tetrazinane-3,6-dione Chemical class O=C1NNC(=O)NN1 XMKLTEGSALONPH-UHFFFAOYSA-N 0.000 claims description 6
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 125000006705 (C5-C7) cycloalkyl group Chemical group 0.000 claims description 5
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 5
- DHTAIMJOUCYGOL-UHFFFAOYSA-N 2-ethyl-n-(2-ethylhexyl)-n-[(4-methylbenzotriazol-1-yl)methyl]hexan-1-amine Chemical group C1=CC=C2N(CN(CC(CC)CCCC)CC(CC)CCCC)N=NC2=C1C DHTAIMJOUCYGOL-UHFFFAOYSA-N 0.000 claims description 4
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 claims description 2
- JLAMDELLBBZOOX-UHFFFAOYSA-N 3h-1,3,4-thiadiazole-2-thione Chemical compound SC1=NN=CS1 JLAMDELLBBZOOX-UHFFFAOYSA-N 0.000 claims description 2
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims description 2
- -1 diurea compound Chemical class 0.000 description 31
- 150000003839 salts Chemical class 0.000 description 13
- 239000003566 sealing material Substances 0.000 description 12
- 229920001971 elastomer Polymers 0.000 description 10
- 239000005060 rubber Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 125000001931 aliphatic group Chemical group 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 6
- 239000000654 additive Substances 0.000 description 6
- 230000002411 adverse Effects 0.000 description 6
- 125000002723 alicyclic group Chemical group 0.000 description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 6
- 239000003963 antioxidant agent Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 6
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 150000004945 aromatic hydrocarbons Chemical group 0.000 description 5
- 239000002270 dispersing agent Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 4
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 3
- 150000001565 benzotriazoles Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 229920013639 polyalphaolefin Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 2
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000003973 alkyl amines Chemical class 0.000 description 2
- 150000001556 benzimidazoles Chemical class 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000010696 ester oil Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229960001860 salicylate Drugs 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 150000004867 thiadiazoles Chemical class 0.000 description 2
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 1
- XTYDQWTYBIZARF-UHFFFAOYSA-N 2-(decyldisulfanyl)-1h-benzimidazole Chemical compound C1=CC=C2NC(SSCCCCCCCCCC)=NC2=C1 XTYDQWTYBIZARF-UHFFFAOYSA-N 0.000 description 1
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- HNNQYHFROJDYHQ-UHFFFAOYSA-N 3-(4-ethylcyclohexyl)propanoic acid 3-(3-ethylcyclopentyl)propanoic acid Chemical compound CCC1CCC(CCC(O)=O)C1.CCC1CCC(CCC(O)=O)CC1 HNNQYHFROJDYHQ-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 239000005069 Extreme pressure additive Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical group 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 125000000732 arylene group Chemical group 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 125000001196 nonadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/02—Petroleum fractions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M115/00—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
- C10M115/08—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/12—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/38—Heterocyclic nitrogen compounds
- C10M133/44—Five-membered ring containing nitrogen and carbon only
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Description
すなわち、本発明の要旨は、以下のとおりである。
[1]基油とウレア系増ちょう剤と金属不活性化剤とを含有する、転がり軸受用グリース組成物であって、
前記基油のアニリン点が、110℃以上であり、
前記ウレア系増ちょう剤が、下記式(1):
R1−NHCONH−R2−NHCONH−R3 (1)
(式中、R1及びR3は、互いに同一でも異なっていてもよく、C6-30アルキル基、C5-8シクロアルキル基、又はC6-10アリール基を示し、R2は、炭素数6〜15の2価の芳香族炭化水素基を示す)
で表されるジウレア化合物から選択される少なくとも一種である、前記転がり軸受用グリース組成物。
[2]前記ウレア系増ちょう剤が、下記式(2)〜(4):
R4−NHCONH−R2−NHCONH−R4 (2)
R4−NHCONH−R2−NHCONH−R5 (3)
R5−NHCONH−R2−NHCONH−R5 (4)
(式中、R2は、炭素数6〜15の2価の芳香族炭化水素基を示し、R4は、C10-26アルキル基を示し、R5は、C5-7シクロアルキル基を示す)
で表されるジウレア化合物から選択される少なくとも一種である、[1]記載の転がり軸受用グリース組成物。
[3]前記ウレア系増ちょう剤において、R4とR5の総モル数に対するR4のモル数の割合[100×(R4のモル数)/(R4のモル数+R5のモル数)]が、50〜90モル%である、[2]記載の転がり軸受用グリース組成物。
[4]前記金属不活性化剤が、ベンゾトリアゾール系化合物、チアジアゾール系化合物、及びベンゾイミダゾール系化合物からなる群から選択された少なくとも一種である、[1]〜[3]のいずれか1項記載の転がり軸受用グリース組成物。
[5]前記金属不活性化剤の割合が、グリース組成物に対して、0.1〜10質量%である、[1]〜[4]のいずれか1項記載の転がり軸受用グリース組成物。
[6]前記基油が、鉱油及び/又は合成炭化水素油である、[1]〜[5]のいずれか1項記載の転がり軸受用グリース組成物。
[7]前記基油の40℃における動粘度が15〜200mm2/sである、[1]〜[6]のいずれか1項記載の転がり軸受用グリース組成物。
[8][1]〜[7]のいずれか1項記載の転がり軸受用グリース組成物が封入された、転がり軸受。
本発明のグリース組成物は、転がり軸受に使用されるグリース組成物であり、基油と所定のウレア系増ちょう剤と金属不活性化剤とを含んでいる。
本発明で使用する基油は、アニリン点が110℃以上である限り、特に限定されない。アニリン点とは、JIS K 2256に定義されるとおり、等容量のアニリンと試料とが均一な溶液として存在する最低温度(アニリンと試料とが完全に溶け合っている状態から、温度を下げて両者が分離して濁りを生じる温度)である。基油のアニリン点が低すぎると、シール材として使用されるゴムや樹脂を膨潤させて、シール材のシール性能に悪影響を及ぼし得る。従って、基油のアニリン点は、好ましくは120℃以上であり、さらに好ましくは125℃以上(例えば、130〜200℃)である。
本発明のウレア系増ちょう剤は、下記式(1)で表されるジウレア化合物から選択される少なくとも一種である。
R1−NHCONH−R2−NHCONH−R3 (1)
(式中、R1及びR3は、互いに同一でも異なっていてもよく、C6-30アルキル基、C5-8シクロアルキル基、又はC6-10アリール基を示し、R2は、炭素数6〜15の2価の芳香族炭化水素基を示す)
R4−NHCONH−R2−NHCONH−R4 (2)
R4−NHCONH−R2−NHCONH−R5 (3)
R5−NHCONH−R2−NHCONH−R5 (4)
(式中、R4は、C10-26アルキル基を示し、R5は、C5-7シクロアルキル基を示し、R2は、前記と同じである)
本発明で使用する金属不活性化剤は、金属表面に付着して皮膜を形成するためか、ウレア系増ちょう剤の金属表面への付着及び堆積を防止でき、ウレア系増ちょう剤の分散状態を維持でき、転がり軸受の音響寿命を顕著に改善することができると推測される。このような金属不活性化剤の音響寿命の改善作用は、これまで知られておらず、本発明により初めて見出されたものである。
本発明の転がり軸受は、上記のグリース組成物を封入したものである。具体的には、転がり軸受は、内輪と、外輪と、内輪と外輪との間に介在し、かつ複数の転動体(玉、ころなど)を転動自在に保持する保持器と、該保持器により保持された複数の転動体(玉、ころなど)とを備えており、内輪と外輪の間の軸受空間には、グリース組成物が封入されている。
基油中で、4,4’−ジフェニルメタンジイソシアネート(MDI)と所定量のアミン[シクロヘキシルアミン(CHA)及び/又はステアリルアミン(SA)]を反応させて、ベースグリースを調製した。該ベースグリースに、金属不活性化剤を添加し、実施例及び比較例のグリース組成物を調製した。なお、比較例1では、金属不活性化剤を添加することなく、ベースグリースをそのまま使用した。
実施例及び比較例で使用した基油及び金属不活性化剤は、以下のとおりである。
(基油)
鉱油:パラフィン系鉱油
合成炭化水素油:ポリ−α−オレフィン
エステル油:ジペンタエリスリトール油とペンタエリスリトール油を前者/後者=53/47(質量比)で混合した混合油
(金属不活性化剤)
A:ベンゾトリアゾール系化合物:1−[N,N−ビス(2−エチルヘキシル)アミノメチル]−4−メチルベンゾトリアゾール
B:チアジアゾール系化合物:2,5−ビス(アルキルジチオ)−1,3,4−チアジアゾール
C:ベンゾイミダゾール系化合物:2−メルカプトベンゾイミダゾール
(酸化防止剤)
ジフェニルアミン
実施例及び比較例で得られたグリース組成物について、以下の方法により、音響耐久性及び耐ゴム性を評価した。
内径8mm、外径22mm、幅7mmの小径深溝玉軸受に試験グリース組成物を160mg封入し、音響耐久試験を行った。なお、試験条件は、雰囲気温度140℃、内輪回転速度5600rpm、アキシャル荷重19.6N、試験時間1500時間である。音響耐久性は、以下の基準により判定した。
○:アンデロン値が5以下である
×:アンデロン値が5を超える
試験グリース組成物中にシール材であるNBRを全没させ、100℃において70時間静置後、シール材を取り出し、体積膨張率を測定した。耐ゴム性は、以下の基準により判定した。
◎:体積膨張率が10%未満である
○:体積膨張率が10%以上15%未満である
×:体積膨張率が15%以上である
Claims (7)
- 基油とウレア系増ちょう剤と金属不活性化剤とを含有する、転がり軸受用グリース組成物であって、
前記基油のアニリン点が、110℃以上であり、
前記ウレア系増ちょう剤が、下記式(1):
R1−NHCONH−R2−NHCONH−R3 (1)
(式中、R1及びR3は、互いに同一でも異なっていてもよく、C6-30アルキル基、C5-8シクロアルキル基、又はC6-10アリール基を示し、R2は、炭素数6〜15の2価の芳香族炭化水素基を示す)
で表されるジウレア化合物から選択される少なくとも一種であり、
前記金属不活性化剤が、1−[N,N−ビス(2−エチルヘキシル)アミノメチル]−4−メチルベンゾトリアゾール、チアジアゾール、2−メルカプトチアジアゾール、2,5−ビス(アルキルジチオ)−1,3,4−チアジアゾール、2−メルカプトベンゾイミダゾール、2−(デシルジチオ)−ベンゾイミダゾールからなる群から選ばれる少なくとも1種である、前記転がり軸受用グリース組成物。 - 前記ウレア系増ちょう剤が、下記式(2)〜(4):
R4−NHCONH−R2−NHCONH−R4 (2)
R4−NHCONH−R2−NHCONH−R5 (3)
R5−NHCONH−R2−NHCONH−R5 (4)
(式中、R2は、炭素数6〜15の2価の芳香族炭化水素基を示し、R4は、C10-26アルキル基を示し、R5は、C5-7シクロアルキル基を示す)
で表されるジウレア化合物から選択される少なくとも一種である、請求項1記載の転がり軸受用グリース組成物。 - 前記ウレア系増ちょう剤において、R4とR5の総モル数に対するR4のモル数の割合[100×(R4のモル数)/(R4のモル数+R5のモル数)]が、50〜90モル%である、請求項2記載の転がり軸受用グリース組成物。
- 前記金属不活性化剤の割合が、グリース組成物に対して、0.1〜10質量%である、請求項1〜3のいずれか1項記載の転がり軸受用グリース組成物。
- 前記基油が、鉱油及び/又は合成炭化水素油である、請求項1〜4のいずれか1項記載の転がり軸受用グリース組成物。
- 前記基油の40℃における動粘度が15〜200mm2/sである、請求項1〜5のいずれか1項記載の転がり軸受用グリース組成物。
- 請求項1〜6のいずれか1項記載の転がり軸受用グリース組成物が封入された、転がり軸受。
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US15/519,867 US10508249B2 (en) | 2014-10-22 | 2015-10-22 | Grease composition for rolling bearings and rolling bearing |
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