JP2024040060A - グリース組成物、転がり軸受および潤滑方法 - Google Patents
グリース組成物、転がり軸受および潤滑方法 Download PDFInfo
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- JP2024040060A JP2024040060A JP2022144895A JP2022144895A JP2024040060A JP 2024040060 A JP2024040060 A JP 2024040060A JP 2022144895 A JP2022144895 A JP 2022144895A JP 2022144895 A JP2022144895 A JP 2022144895A JP 2024040060 A JP2024040060 A JP 2024040060A
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- grease composition
- acid value
- rolling bearing
- total amount
- oil
- Prior art date
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- 238000005096 rolling process Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 20
- 238000005461 lubrication Methods 0.000 title claims description 10
- 239000002253 acid Substances 0.000 claims abstract description 86
- 239000003921 oil Substances 0.000 claims abstract description 32
- 239000002199 base oil Substances 0.000 claims abstract description 27
- 239000000654 additive Substances 0.000 claims abstract description 25
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- 235000019197 fats Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- FXNGWBDIVIGISM-UHFFFAOYSA-N methylidynechromium Chemical group [Cr]#[C] FXNGWBDIVIGISM-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- MZYHMUONCNKCHE-UHFFFAOYSA-N naphthalene-1,2,3,4-tetracarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=C(C(O)=O)C(C(O)=O)=C21 MZYHMUONCNKCHE-UHFFFAOYSA-N 0.000 description 1
- KVQQRFDIKYXJTJ-UHFFFAOYSA-N naphthalene-1,2,3-tricarboxylic acid Chemical compound C1=CC=C2C(C(O)=O)=C(C(O)=O)C(C(=O)O)=CC2=C1 KVQQRFDIKYXJTJ-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- 229920002601 oligoester Polymers 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- CNVZJPUDSLNTQU-SEYXRHQNSA-N petroselinic acid Chemical compound CCCCCCCCCCC\C=C/CCCCC(O)=O CNVZJPUDSLNTQU-SEYXRHQNSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000008301 phosphite esters Chemical class 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- 229960003656 ricinoleic acid Drugs 0.000 description 1
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- CTJJGIVJOBVMEO-UHFFFAOYSA-N tetraoctyl benzene-1,2,4,5-tetracarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC(C(=O)OCCCCCCCC)=C(C(=O)OCCCCCCCC)C=C1C(=O)OCCCCCCCC CTJJGIVJOBVMEO-UHFFFAOYSA-N 0.000 description 1
- 229920006259 thermoplastic polyimide Polymers 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 1
- 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 1
- UWHZIFQPPBDJPM-BQYQJAHWSA-N trans-vaccenic acid Chemical compound CCCCCC\C=C\CCCCCCCCCC(O)=O UWHZIFQPPBDJPM-BQYQJAHWSA-N 0.000 description 1
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- SMYKBXMWXCZOLU-UHFFFAOYSA-N tris-decyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCCCC)C(C(=O)OCCCCCCCCCC)=C1 SMYKBXMWXCZOLU-UHFFFAOYSA-N 0.000 description 1
- 229960002703 undecylenic acid Drugs 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
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
- C10M169/02—Mixtures of base-materials and thickeners
-
- 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
-
- 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
-
- 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
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
各グリース組成物の初期酸価をJIS K2501に準拠して測定した。具体的には、電位差滴定法で測定した。終点はpH11.65であった。
各グリース組成物を単式スラスト玉軸受51204の内部に1.0g塗布し、室温下で、振動数30Hz、揺動角12°、アキシアル荷重2450Nの条件で振動させた。試験開始から2時間後の軸受摩耗量(重量減少量)を測定した。摩耗量の評価について、2mg未満を「A」、2~3mg未満を「B」、3mg以上を「C」として表1および表2に併記する。
各グリース組成物を封入した玉軸受608(内径8mm、外径22mm、幅7mm)を用意して、この軸受に7.8Nのアキシアル荷重をかけ、1800min-1で30秒運転し、振動値G(RMS値)を測定した。振動値Gの評価について、25mG未満を「A」、25~30mG未満を「B」、30mG以上を「C」として表1および表2に併記する。
各グリース組成物を玉軸受6204(内径20mm、外径47mm、幅14mm)に1.8g(全空間の38%に相当)封入して、試験用軸受を作製した。得られた試験用軸受を、軸受外輪の外径部温度150℃、アキシアル荷重67N、ラジアル荷重67Nの条件下で、10000min-1の回転速度で回転させて、モータ電流値上昇が+2Aに至るまでの時間を測定した。この条件のdm・n値は、約34×104である。グリース寿命時間の評価について、5000時間超えを「A」、3000時間超えを「B」、2000~3000時間を「C」、2000時間未満を「D」として表1および表2に併記する。
2 内輪
3 外輪
4 転動体
5 保持器
6 シール部材
7 グリース
8a、8b 開口部
11 ジャケット
12 固定子
13 回転軸
14 巻線
15 回転子
16 整流子
17 ブラシホルダ
18 ブラシ
19 エンドフレーム
Claims (12)
- 基油と増ちょう剤と添加剤を含むグリース組成物であって、
前記基油が合成炭化水素油とエステル油との混合油であり、前記増ちょう剤が脂肪族ジウレア化合物であり、前記グリース組成物の初期酸価が2.0mgKOH/g以上であることを特徴とするグリース組成物。 - 前記添加剤は、硫黄(S)、リン(P)、および亜鉛(Zn)の元素を含み、前記グリース組成物に含まれるこれら元素の合計量が、前記グリース組成物全量に対して0.50質量%以上であることを特徴とする請求項1記載のグリース組成物。
- 前記添加剤は、硫黄(S)、リン(P)、亜鉛(Zn)、バリウム(Ba)、およびカルシウム(Ca)の元素を含み、前記グリース組成物に含まれるこれら元素の合計量が、前記グリース組成物全量に対して0.50質量%以上であることを特徴とする請求項1記載のグリース組成物。
- 前記グリース組成物に含まれる前記元素の合計量が、前記グリース組成物全量に対して1.5質量%以下であることを特徴とする請求項2または請求項3記載のグリース組成物。
- 前記グリース組成物を高温環境下に曝した際の該グリース組成物の酸価の経時的変化は、前記初期酸価の値から低下した後、上昇していくという挙動を示すことを特徴とする請求項1または請求項2記載のグリース組成物。
- 前記脂肪族ジウレア化合物は、ジイソシアネート成分と2種類の異なる脂肪族モノアミンとを反応して得られる脂肪族ジウレア化合物であることを特徴とする請求項1または請求項2記載のグリース組成物。
- 前記添加剤は、硫黄(S)、リン(P)、亜鉛(Zn)、バリウム(Ba)、およびカルシウム(Ca)の元素を含み、前記グリース組成物に含まれるこれら元素の合計量が、前記グリース組成物全量に対して0.50質量%以上1.5質量%以下であり、
前記脂肪族ジウレア化合物は、ジイソシアネート成分と2種類の異なる脂肪族モノアミンとを反応して得られる脂肪族ジウレア化合物であり、
前記基油の40℃における動粘度が40mm2/s~70mm2/sであることを特徴とする請求項1記載のグリース組成物。 - 内輪と、外輪と、該内輪および外輪の間に介在する複数の転動体と、該転動体の周囲に封入されたグリース組成物とを有する転がり軸受であって、
前記グリース組成物が請求項1または請求項2記載のグリース組成物であることを特徴とする転がり軸受。 - モータ用軸受であることを特徴とする請求項8記載の転がり軸受。
- 転がり軸受を、合成炭化水素油およびエステル油の混合油からなる基油と脂肪族ジウレア化合物からなる増ちょう剤を含むグリース組成物によって潤滑させる潤滑方法であって、
前記グリース組成物において、酸価の値を、初期酸価の値から低下させた後、上昇させることを特徴とする転がり軸受の潤滑方法。 - 前記転がり軸受を80℃~200℃の高温環境下で潤滑させることを特徴とする請求項10記載の転がり軸受の潤滑方法。
- 前記グリース組成物として、前記初期酸価が2.0mgKOH/g以上のグリース組成物を用いることを特徴とする請求項10または請求項11記載の転がり軸受の潤滑方法。
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PCT/JP2023/033004 WO2024058106A1 (ja) | 2022-09-12 | 2023-09-11 | グリース組成物、転がり軸受および潤滑方法 |
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JP4532799B2 (ja) | 2001-09-27 | 2010-08-25 | Ntn株式会社 | グリース組成物およびグリース封入軸受 |
CN1292060C (zh) | 2002-08-21 | 2006-12-27 | 西铁城钟表株式会社 | 精密仪器用的润滑脂组合物以及使用该组合物的表 |
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JP2008308617A (ja) | 2007-06-15 | 2008-12-25 | Nsk Ltd | グリース組成物及び転動装置 |
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JP5808134B2 (ja) | 2011-04-20 | 2015-11-10 | Ntn株式会社 | モータ用グリース封入軸受 |
JP2015229704A (ja) | 2014-06-04 | 2015-12-21 | 日本精工株式会社 | グリース組成物及び転がり軸受 |
JP6480785B2 (ja) | 2015-04-03 | 2019-03-13 | Ntn株式会社 | グリース組成物 |
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