JP2017211068A - 転がり軸受 - Google Patents
転がり軸受 Download PDFInfo
- Publication number
- JP2017211068A JP2017211068A JP2016106522A JP2016106522A JP2017211068A JP 2017211068 A JP2017211068 A JP 2017211068A JP 2016106522 A JP2016106522 A JP 2016106522A JP 2016106522 A JP2016106522 A JP 2016106522A JP 2017211068 A JP2017211068 A JP 2017211068A
- Authority
- JP
- Japan
- Prior art keywords
- fluorine
- grease
- acid
- rolling bearing
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 136
- 239000004519 grease Substances 0.000 claims abstract description 137
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000011737 fluorine Substances 0.000 claims abstract description 88
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 88
- 239000000203 mixture Substances 0.000 claims abstract description 79
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000002562 thickening agent Substances 0.000 claims abstract description 52
- 239000004202 carbamide Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 150000003839 salts Chemical class 0.000 claims abstract description 30
- 239000002199 base oil Substances 0.000 claims abstract description 26
- 239000000654 additive Substances 0.000 claims abstract description 21
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 20
- 239000002270 dispersing agent Substances 0.000 claims abstract description 20
- 230000000996 additive effect Effects 0.000 claims abstract description 18
- 239000002253 acid Substances 0.000 claims abstract description 16
- 150000007524 organic acids Chemical class 0.000 claims abstract description 16
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000002170 ethers Chemical class 0.000 claims abstract description 7
- -1 diurea compound Chemical class 0.000 claims description 32
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 6
- 125000002723 alicyclic group Chemical group 0.000 claims description 4
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 17
- 230000007774 longterm Effects 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 43
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- 238000011156 evaluation Methods 0.000 description 14
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- 230000002950 deficient Effects 0.000 description 8
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
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- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
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- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- NCXUIEDQTCQZRK-UHFFFAOYSA-L disodium;decanedioate Chemical compound [Na+].[Na+].[O-]C(=O)CCCCCCCCC([O-])=O NCXUIEDQTCQZRK-UHFFFAOYSA-L 0.000 description 4
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
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- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 4
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 4
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 4
- 235000005985 organic acids Nutrition 0.000 description 4
- 239000010702 perfluoropolyether Substances 0.000 description 4
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 159000000000 sodium salts Chemical class 0.000 description 4
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 4
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- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 3
- 239000005642 Oleic acid Substances 0.000 description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 150000001735 carboxylic acids Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 3
- 235000021313 oleic acid Nutrition 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 3
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical compound CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 2
- FRPZMMHWLSIFAZ-UHFFFAOYSA-N 10-undecenoic acid Chemical compound OC(=O)CCCCCCCCC=C FRPZMMHWLSIFAZ-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- WXUAQHNMJWJLTG-UHFFFAOYSA-N 2-methylbutanedioic acid Chemical compound OC(=O)C(C)CC(O)=O WXUAQHNMJWJLTG-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- UIERETOOQGIECD-UHFFFAOYSA-N Angelic acid Natural products CC=C(C)C(O)=O UIERETOOQGIECD-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 2
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 2
- 239000005069 Extreme pressure additive Substances 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
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- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 2
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- 235000021355 Stearic acid Nutrition 0.000 description 2
- KRADHMIOFJQKEZ-UHFFFAOYSA-N Tri-2-ethylhexyl trimellitate Chemical compound CCCCC(CC)COC(=O)C1=CC=C(C(=O)OCC(CC)CCCC)C(C(=O)OCC(CC)CCCC)=C1 KRADHMIOFJQKEZ-UHFFFAOYSA-N 0.000 description 2
- 235000011054 acetic acid Nutrition 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 2
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- 150000004982 aromatic amines Chemical class 0.000 description 2
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Abstract
【解決手段】フッ素系基油およびフッ素系増ちょう剤を含むフッ素系グリースと、非フッ素系基油および非フッ素系増ちょう剤を含む非フッ素系グリースと、分散剤としての添加剤と、を含有するグリース組成物であって、前記非フッ素系増ちょう剤は、脂肪‐芳香族ウレア、脂環‐脂肪族ウレア、および、脂肪族ウレアのうち少なくとも一種を含み、前記分散剤は、ポリカルボン酸金属塩、含フッ素基・親油性基含有オリゴマー、フッ化エーテル系ジアミド、および、有機酸金属塩のうち少なくとも一種を含むことを特徴とするグリース組成物を封入した。
【選択図】図1
Description
R1−NHCONH−R2−NHCONH−R3・・・(1)
ただし、R1、R3は脂肪族炭化水素基、脂環式炭化水素基、または、芳香族炭化水素基であるが、R1、R3のうち少なくとも一方は、脂肪族炭化水素基または脂環式炭化水素基であり、R2は、芳香族炭化水素基である。
R1−NHCONH−R2−NHCONH−R3・・・(1)
ここで、R1、R3は脂肪族炭化水素基でも脂環式炭化水素基でも芳香族炭化水素基でもよいが、R1、R3のうち少なくとも一方は、脂肪族炭化水素基または脂環式炭化水素基である。R2は、芳香族炭化水素基である。
次に、上記説明したグリース組成物を封入した本実施形態に係る転がり軸受は、良好な低速トルクが維持されるとともに、高温環境で長期間使用しても良好な潤滑特性(高温耐久性)が維持されることを検証した実験の結果について説明する。
比較検討1では、分散剤を添加したグリース組成物を封入した実施形態に係る転がり軸受(A群)と、添加剤を加えないグリースまたはA群とは異なる添加剤を加えたグリース組成物を封入した転がり軸受(B群)とを比較する。表1は、比較検討1の結果をまとめたものである。
比較検討2では、上記説明した非フッ素系増ちょう剤(脂肪‐芳香族ウレア、脂環‐脂肪族ウレア、および、脂肪族ウレアのうち少なくとも一種)を用いたグリース組成物を封入した転がり軸受(C群)と、上記説明した非フッ素系増ちょう剤とは異なる非フッ素系増ちょう剤を用いたグリース組成物を封入した転がり軸受(D群)とを比較する。表2は、比較検討2の結果をまとめたものである。なお、比較検討2でも、比較検討1と同様に、ポリカルボン酸金属塩の具体例として、マレイン酸ナトリウム塩とイソブチレンの共重合体を用いるとともに、有機酸金属塩として、セバシン酸二ナトリウム塩を用いた場合を例示している。
比較検討3では、グリース組成物全体に対する非フッ素系グリースの含有比率が10wt%以上50wt%以下であるグリース組成物を封入した転がり軸受(E群)と、含有比率が当該範囲外であるグリース組成物を封入した転がり軸受(F群)とを比較する。表3は、比較検討3の結果をまとめたものである。なお、比較検討3でも、比較検討1および比較検討2と同様に、ポリカルボン酸金属塩の具体例として、マレイン酸ナトリウム塩とイソブチレンの共重合体を用いるとともに、有機酸金属塩として、セバシン酸二ナトリウム塩を用いた場合を例示している。
比較検討4では、転がり軸受の転動体の径とトルクとの関係に着目し、転動体の径を変化させた場合のトルク比への影響について考察する。ここで、「トルク比」とは、実施形態に係る転がり軸受の低速トルクの測定値と、比較例に係る転がり軸受の低速トルクの測定値との比をいう。すなわち、トルク比=(比較例に係る転がり軸受の低速トルクの測定値)/(実施形態に係る転がり軸受の低速トルクの測定値)である。表4に、相異なる4つの転がり軸受(TypeA〜TypeD)の夫々における内径寸法と外径寸法と転動体の径とトルク比とを示す。
10 転がり軸受
11 内輪
12 外輪
13 転動体
14 保持器
15 シール材
Claims (5)
- フッ素系基油およびフッ素系増ちょう剤を含むフッ素系グリースと、
非フッ素系基油および非フッ素系増ちょう剤を含む非フッ素系グリースと、
分散剤としての添加剤と、
を含有するグリース組成物であって、
前記非フッ素系増ちょう剤は、脂肪‐芳香族ウレア、脂環‐脂肪族ウレア、および、脂肪族ウレアのうち少なくとも一種を含み、
前記分散剤は、ポリカルボン酸金属塩、含フッ素基・親油性基含有オリゴマー、フッ化エーテル系ジアミド、および、有機酸金属塩のうち少なくとも一種を含むことを特徴とするグリース組成物が封入されている転がり軸受。 - 前記非フッ素系増ちょう剤は、下記一般式(1)で示されるジウレア化合物を含むことを特徴とする請求項1に記載の転がり軸受。
R1−NHCONH−R2−NHCONH−R3・・・(1)
ただし、R1、R3は脂肪族炭化水素基、脂環式炭化水素基、または、芳香族炭化水素基であるが、R1、R3のうち少なくとも一方は、脂肪族炭化水素基または脂環式炭化水素基であり、R2は、芳香族炭化水素基である。 - 前記非フッ素系グリースは、グリース組成物全体に対して10wt%以上50wt%以下の含有比率で含まれていることを特徴とする請求項1または請求項2に記載の転がり軸受。
- 前記非フッ素系グリースは、グリース組成物全体に対して10wt%以上30wt%以下の含有比率で含まれていることを特徴とする請求項1から請求項3のいずれか一項に記載の転がり軸受。
- 転動体の径が5mm以下であることを特徴とする請求項4に記載の転がり軸受。
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JP2020041585A (ja) * | 2018-09-10 | 2020-03-19 | ミネベアミツミ株式会社 | 転がり軸受 |
WO2024150344A1 (ja) * | 2023-01-11 | 2024-07-18 | 株式会社ジェイテクト | マレイン酸系添加剤、グリース組成物および転がり軸受 |
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FR3060605B1 (fr) * | 2016-12-15 | 2021-05-28 | Skf Ab | Compositions de graisse et leur procede de fabrication |
FR3060604B1 (fr) | 2016-12-15 | 2021-05-28 | Skf Ab | Compositions de graisse et leur procede de fabrication |
TWI663030B (zh) * | 2018-08-08 | 2019-06-21 | 益航電子股份有限公司 | 傳動軸及周邊結構 |
CN110317667A (zh) * | 2019-07-15 | 2019-10-11 | 浙江摩路新材料有限公司 | 一种高温长寿命轴承润滑脂及其制备方法 |
CN110408462A (zh) * | 2019-07-22 | 2019-11-05 | 纳拓润滑技术(上海)有限公司 | 一种用于拉杆球头的润滑脂及其制备方法 |
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US20150175931A1 (en) * | 2013-12-19 | 2015-06-25 | Hyundai Motor Company | Grease composition for engine bearing |
Cited By (2)
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JP2020041585A (ja) * | 2018-09-10 | 2020-03-19 | ミネベアミツミ株式会社 | 転がり軸受 |
WO2024150344A1 (ja) * | 2023-01-11 | 2024-07-18 | 株式会社ジェイテクト | マレイン酸系添加剤、グリース組成物および転がり軸受 |
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US20170343045A1 (en) | 2017-11-30 |
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CN107446663B (zh) | 2022-01-07 |
CN107446663A (zh) | 2017-12-08 |
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