JPH03179094A - Reduction gear lubricant composition - Google Patents
Reduction gear lubricant compositionInfo
- Publication number
- JPH03179094A JPH03179094A JP20380989A JP20380989A JPH03179094A JP H03179094 A JPH03179094 A JP H03179094A JP 20380989 A JP20380989 A JP 20380989A JP 20380989 A JP20380989 A JP 20380989A JP H03179094 A JPH03179094 A JP H03179094A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- aliphatic hydrocarbon
- oil
- polymethacrylate
- 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
- 239000000314 lubricant Substances 0.000 title claims abstract description 5
- 239000000203 mixture Substances 0.000 title claims description 26
- 239000004519 grease Substances 0.000 claims abstract description 21
- 229920000193 polymethacrylate Polymers 0.000 claims abstract description 13
- 239000002199 base oil Substances 0.000 claims abstract description 7
- 239000002562 thickening agent Substances 0.000 claims abstract description 5
- 230000001050 lubricating effect Effects 0.000 claims abstract 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 27
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 abstract description 20
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003963 antioxidant agent Substances 0.000 abstract description 2
- 239000004202 carbamide Substances 0.000 abstract description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 2
- 229920013639 polyalphaolefin Polymers 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 230000003078 antioxidant effect Effects 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 230000003449 preventive effect Effects 0.000 abstract 1
- 239000002480 mineral oil Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 235000010446 mineral oil Nutrition 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
- 238000010438 heat treatment Methods 0.000 description 4
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) 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
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- FPLIHVCWSXLMPX-UHFFFAOYSA-M lithium 12-hydroxystearate Chemical compound [Li+].CCCCCCC(O)CCCCCCCCCCC([O-])=O FPLIHVCWSXLMPX-UHFFFAOYSA-M 0.000 description 1
- RTWNYYOXLSILQN-UHFFFAOYSA-N methanediamine Chemical compound NCN RTWNYYOXLSILQN-UHFFFAOYSA-N 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- RZXMPPFPUUCRFN-UHFFFAOYSA-N p-toluidine Chemical compound CC1=CC=C(N)C=C1 RZXMPPFPUUCRFN-UHFFFAOYSA-N 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
近年の機械技術の進歩は著しく、機械部品の小型化、軽
量化および高効率化が進み、潤滑箇所が高温となる傾向
がある。この傾向は、従来人間が行っていた作業を機械
化すること、つまりロボット化された作業でも同一であ
り、さらに機械そのものの使用が世界的規模におよぶた
め、寒冷地に対しての対策も必要である。本発明は、こ
のような厳しい条件下の特に減速機に使用され、低温時
の潤滑性によるトルクが小さく、かつ耐久性に優れる減
速機用潤滑剤組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) Mechanical technology has made remarkable progress in recent years, and mechanical parts have become smaller, lighter, and more efficient, and lubrication points tend to become hotter. This trend is the same when tasks that were traditionally performed by humans are mechanized, or in other words, when robots are used to do the work.Furthermore, as machines themselves are used on a global scale, countermeasures for cold regions are also necessary. be. The present invention relates to a lubricant composition for a speed reducer that is used particularly for a speed reducer under such severe conditions, has low torque due to its lubricity at low temperatures, and has excellent durability.
（従来の技術〉
従来かような、低温性が要求される箇所には、低粘度鉱
油を基油としたグリースが使用されていた。また、耐久
性が要求される箇所には、中粘度鉱油を基油としたグリ
ースがそれぞれ要求性能に合わせて使い分けをされてい
た。(Conventional technology) Conventionally, greases based on low-viscosity mineral oils have been used in places where low-temperature properties are required. Also, in places where durability is required, medium-viscosity mineral oils have been used. Greases based on these oils were used depending on the required performance.
（発明が解決しようとする課Ｍ）
減速機の一つであるハーモニックドライブ■（■ハーモ
ニックドライブシステムズの登録商標）の基本要素は、
第１図に示すように、サーキュラ・スプライン１、フレ
クスプライン２、ウェーブ・ジェネレータ３の３要素か
ら構成されている。(Problem to be solved by the invention M) The basic elements of Harmonic Drive (registered trademark of Harmonic Drive Systems), which is one of the reduction gears, are:
As shown in FIG. 1, it is composed of three elements: a circular spline 1, a flexspline 2, and a wave generator 3.
３要素を組合せた状態で、サーキュラスプライン１を固
定し、ウェーブ・ジェネレータ３ （入力）を回すとフ
レクスプライン２は弾性変形し、サーキュラ・スプライ
ン１とのかみ合い位置が順次移動して行く。ウェーブ・
ジェネレータ３が、１回転したときフレクスプライン２
は、サーキュラスプライン１より歯数が２枚少ないので
その分だけ、ウェーブ・ジェネレータ３の回転方向とは
逆の方向に移動する。一般には、その動きを出力として
取り出す。このような機構の中では特に、ウェーブ・ジ
ェネレータ３とフレクスプライン２の間の潤滑が従来の
グリースでは十分ではなかった。かような機構において
低粘度鉱油を基油としたグリースは低温性は満足するも
のの、耐久性が劣るのが問題である。逆に中粘度鉱油を
基油としたグリースは、耐久性は満足するものの、低温
性が問題となる。この為、要求性能に合わせてグリース
を使い分けており、使用者側から考えると非常に不便で
あり、低温性を維持しつつ耐久性を有するグリースの開
発が望まれていた。With the three elements combined, when the circular spline 1 is fixed and the wave generator 3 (input) is turned, the flexspline 2 is elastically deformed and the position of engagement with the circular spline 1 is sequentially moved. wave・
When generator 3 rotates once, flexspline 2
Since the number of teeth is two less than that of the circular spline 1, the wave generator 3 moves in the opposite direction to the rotational direction of the wave generator 3. Generally, the movement is extracted as an output. In such a mechanism, the lubrication between the wave generator 3 and the flexspline 2 is particularly insufficient with conventional grease. In such mechanisms, greases based on low-viscosity mineral oils have satisfactory low-temperature properties, but have a problem of poor durability. On the other hand, greases based on medium-viscosity mineral oils have satisfactory durability, but have problems with low-temperature properties. For this reason, different greases are used depending on the required performance, which is very inconvenient from the user's perspective, and there has been a desire to develop a grease that has durability while maintaining low temperature properties.
（課題を解決するための手段〉
上記目的を達成する本発明のグリース組成物は、次の一
般式
（式中のＲは炭素数が３〜１２のアルキル基、ｎは１〜
６の整数を示す。）で表わされる脂肪族炭化水素油とポ
リメタクリレートが重量比で９９：ｌないし９０：１０
から成る基油から構成されたことを特徴とする。脂肪族
炭化水素油は、合成油の中では最も古くから検討されて
きたもので、グリースの基油としても最近非常に多く使
用されてきている。(Means for Solving the Problems) The grease composition of the present invention that achieves the above object has the following general formula (wherein R is an alkyl group having 3 to 12 carbon atoms, and n is 1 to 12 carbon atoms).
Indicates an integer of 6. ) and polymethacrylate in a weight ratio of 99:l to 90:10
It is characterized by being composed of a base oil consisting of. Aliphatic hydrocarbon oils have been studied for the longest time among synthetic oils, and have recently been widely used as base oils for grease.
鉱油と比較して粘度指数が高く、流動点が低い又耐樹脂
性に優れる等の特徴を有する。Compared to mineral oil, it has a higher viscosity index, lower pour point, and excellent resin resistance.
又、脂肪族炭化水素油はその一例としてポリα−オレフ
ィンオリゴマーが挙げられる。この脂肪族炭化水素油は
、１００℃における粘度が約３〜２０ｃＳｔのものが好
適である。３ ｃＳｔ未満では潤滑性が劣り蒸発減量が
大きい。又、２０ ｃＳｔを超えると粘性抵抗が大きく
潤滑性、低温性に劣る。An example of the aliphatic hydrocarbon oil is polyα-olefin oligomer. This aliphatic hydrocarbon oil preferably has a viscosity of about 3 to 20 cSt at 100°C. If it is less than 3 cSt, the lubricity is poor and the evaporation loss is large. Moreover, if it exceeds 20 cSt, the viscous resistance will be large and the lubricity and low temperature properties will be poor.
ポリメタクリレートは、粘度指数向上剤又流動点降下剤
として一般的に知られている添加剤である。Polymethacrylate is an additive commonly known as a viscosity index improver or pour point depressant.
非分散型、分散型に分類され、非分散型は分散型は Ｒ’＝Ｈ またはＣＨ。It is classified into non-distributed type and decentralized type. R'=H Or CH.
Ｘ ：
極性基
Ｒおよび平均分子量は非分散型と同程度の一般式でそれ
ぞれ表わされる。X: The polar group R and the average molecular weight are each represented by the same general formula as in the non-dispersed type.
前述のように、脂肪族炭化水素油は粘度指数が高い合成
油であるが、ポリメタクリレートを特定の比率で併用す
ることにより、更に粘度指数が高くなる。即ち、低温で
は油膜が薄く低温性に優れ、又高温では油膜が厚く耐久
性に優れる。従って、このような脂肪族炭化水素油とポ
リメタクリレートを併用した基油により得られるグリー
ス組成物は、ＪＩＳ Ｋ ２２２０５．１４の起動トル
ク、回転トルクなどによるグリースの撹拌抵抗を評価す
る試験ではなく、低温時の潤滑性を評価する試験、例え
ば減速機を実際に使用した低温トルク値を大幅に改善せ
しめることを可能とした。さらに耐久性、例えば減速機
を実際に使用した耐久時間を大幅に改善せしめることを
可能とした。As mentioned above, aliphatic hydrocarbon oil is a synthetic oil with a high viscosity index, but when polymethacrylate is used in a specific ratio, the viscosity index becomes even higher. That is, at low temperatures, the oil film is thin and has excellent low temperature properties, and at high temperatures, the oil film is thick and has excellent durability. Therefore, a grease composition obtained using a base oil that uses a combination of an aliphatic hydrocarbon oil and a polymethacrylate is not subject to the JIS K 22205.14 test that evaluates the stirring resistance of grease due to starting torque, rotational torque, etc. In tests to evaluate lubricity at low temperatures, for example, it has been possible to significantly improve low-temperature torque values when a reducer is actually used. Furthermore, it has made it possible to significantly improve durability, for example, the durability time when the reducer is actually used.
本発明の中で用いる脂肪族炭化水素油とポリメタクリレ
ートは重量比で９９：１ないし９０：１０であることが
条件である。ポリメタクリレートが１重量％未満である
と明確な効果が得られず、目的を達し得ない為、１重量
％以上であることが必要である。又１０重量％を超える
と、低温時に析出してしまい均一とはならない為に１０
重量％以下であることが必要である。It is a condition that the aliphatic hydrocarbon oil and polymethacrylate used in the present invention have a weight ratio of 99:1 to 90:10. If the polymethacrylate content is less than 1% by weight, no clear effect will be obtained and the objective will not be achieved, so it is necessary that the content be 1% by weight or more. Also, if it exceeds 10% by weight, it will precipitate at low temperatures and will not be uniform.
It is necessary that the amount is below % by weight.
本発明に使用する増ちょう剤としては、本質的にはすべ
ての増ちょう剤に適用し得るが耐熱性を要求される場合
には、ウレアであることが望ましい。又、必要に応じて
、フェニルα−ナフチルアミン、２．６−ジ−ターシャ
リ−ブチル−ｐ−クレゾール等の酸化防止剤、Ｎ、Ｎ’
−トＩＪメチレンジアミンジオレエート、ソルビタンモ
ノオレエート等の防錆剤、ジアルキルジチオりん酸塩類
、りん酸エステル類等の極圧剤、高級脂肪酸類、各種エ
ステル類等の油性剤、二硫化モリブデン、グラファイト
等の固体潤滑剤を添加することができる。As the thickener used in the present invention, essentially all thickeners can be used, but when heat resistance is required, urea is preferable. Further, if necessary, antioxidants such as phenyl α-naphthylamine, 2,6-di-tert-butyl-p-cresol, N, N'
- Rust inhibitors such as methylene diamine dioleate and sorbitan monooleate, extreme pressure agents such as dialkyldithiophosphates and phosphoric acid esters, oil agents such as higher fatty acids and various esters, molybdenum disulfide A solid lubricant such as graphite or the like can be added.
（発明の効果）
本発明において、減速機を実際に用いた低温トルク試験
にて低温性を検討した結果、低温性は低粘度鉱油を基油
としたグリースと同等以上であり、又減速機を実際に用
いた耐久試験にて耐久性を検討した結果、耐久性は中粘
度鉱油を基油としたグリースと同等であることが確認さ
れた。(Effects of the Invention) In the present invention, as a result of examining the low-temperature properties in a low-temperature torque test using a reduction gear, it was found that the low-temperature properties were equal to or higher than that of grease based on low-viscosity mineral oil. As a result of examining the durability in an actual durability test, it was confirmed that the durability was equivalent to that of a grease based on medium-viscosity mineral oil.
（実施例）
以下本発明を実施例によって、より詳細に説明する。尚
、実施例、比較例に示した組成物に用いた基油、ポリメ
タクリレートの主たる性状は次の通りである。(Examples) The present invention will be explained in more detail below using examples. The main properties of the base oil and polymethacrylate used in the compositions shown in Examples and Comparative Examples are as follows.
ポリメタフタレート４０℃１１，０００ ｃＳｔ１００
℃ ９０５ ｃＳｔ
実施例１
ジフェニルメタン−４，４′−ジイソシアネー）５．４
６重量部を３８．６０重量部の脂肪族炭化水素油（１０
０℃の粘度３．９ｃＳｔ）に加え、８０℃に加熱し均一
に分散させた。これにオクチルアミン５．６４重量部お
よび前記脂肪族炭化水素油３８．６０重量部とを混合し
、８０℃に加熱し溶解させたものを加え、激しく撹拌す
るとすぐにゲル状物質を生じた。撹拌を３０分間継続し
、２００℃まで加熱１２０℃まで冷却したらポリメタク
リレ−）５．８５重量部および前記脂肪族炭化水素油５
．８５重量部とを混合し、１００℃に加熱し溶解させた
ものを加えた。室温まで冷却した後３段ロールミルで混
練し目的のグリースを得た。Polymetaphthalate 40℃ 11,000 cSt100
°C 905 cSt Example 1 Diphenylmethane-4,4'-diisocyanate) 5.4
6 parts by weight to 38.60 parts by weight of aliphatic hydrocarbon oil (10
The viscosity at 0° C. was 3.9 cSt), and the mixture was heated to 80° C. for uniform dispersion. A mixture of 5.64 parts by weight of octylamine and 38.60 parts by weight of the aliphatic hydrocarbon oil was heated to 80° C. to dissolve the mixture, and the mixture was stirred vigorously to immediately form a gel-like substance. After stirring for 30 minutes, heating to 200°C and cooling to 120°C, 5.85 parts by weight of polymethacrylate and 5 parts of the aliphatic hydrocarbon oil were added.
．． 85 parts by weight were mixed, heated to 100°C, and dissolved. After cooling to room temperature, the mixture was kneaded in a three-roll mill to obtain the desired grease.
実施例２
ジフェニルメタン−４，４′−ジイソシアネー） ８．
３６重量部を３６．５６重量部の脂肪族炭化水素油（１
００℃の粘度３．９ｃＳｔ）に加え、８０℃に加熱し均
一に分散させた。これにシクロヘキシルアミン６．６３
重量部および前記脂肪族炭化水素油３６．５５重量部と
を混合し、８０℃に加熱し溶解させたものを加え、激し
く撹拌するとすぐにゲル状物質を生じた。撹拌を３０分
間継続し、２００℃まで加熱１２０℃まで冷却したらポ
リメタクリレート５．９５重量部および前記脂肪族炭化
水素油５．９５重量部とを混合し、１００℃に加熱し溶
解させたものを加えた。室温まで冷却した後３段ロール
ミルで混練し目的のグリースを得た。Example 2 Diphenylmethane-4,4'-diisocyanate) 8.
36 parts by weight to 36.56 parts by weight of aliphatic hydrocarbon oil (1
The viscosity at 00°C was 3.9 cSt), and the mixture was heated to 80°C to be uniformly dispersed. To this, cyclohexylamine 6.63
Parts by weight and 36.55 parts by weight of the aliphatic hydrocarbon oil were mixed, heated to 80°C, dissolved, and stirred vigorously, immediately forming a gel-like substance. After stirring for 30 minutes, heating to 200°C and cooling to 120°C, 5.95 parts by weight of polymethacrylate and 5.95 parts by weight of the aliphatic hydrocarbon oil were mixed, heated to 100°C and dissolved. added. After cooling to room temperature, the mixture was kneaded in a three-roll mill to obtain the desired grease.
実施例３
ジフェニルメタン−４，４′−ジイソシアネー）１１．
３１重量部を３３．９７重量部の脂肪族炭化水素油（１
００℃の粘度３．９ｃＳｔ）に加え、８０℃に加熱し均
一に分散させた。これにパラトルイジン９．６９重量部
および前記脂肪族炭化水素油３３．９７重量部とを混合
し、８０℃に加熱し溶解させたものを加え、激しく撹拌
するとすぐにゲル状物質を生じた。撹拌を３０分間継続
し、２００℃まで加熱１２０℃まで冷却したらポリメタ
クリレート５．５３重量部および前記脂肪族炭化水素油
５．５３重量部とを混合し、１００℃に加熱し溶解させ
たものを加えた。室温まで冷却した後３段ロールミルで
混練し目的のグリースを得た。Example 3 Diphenylmethane-4,4'-diisocyanate)11.
31 parts by weight to 33.97 parts by weight of aliphatic hydrocarbon oil (1
The viscosity at 00°C was 3.9 cSt), and the mixture was heated to 80°C to be uniformly dispersed. A mixture of 9.69 parts by weight of paratoluidine and 33.97 parts by weight of the aliphatic hydrocarbon oil was heated to 80° C. to dissolve the mixture, and the mixture was stirred vigorously to immediately form a gel-like substance. After stirring for 30 minutes, heating to 200°C and cooling to 120°C, 5.53 parts by weight of polymethacrylate and 5.53 parts by weight of the aliphatic hydrocarbon oil were mixed, heated to 100°C and dissolved. added. After cooling to room temperature, the mixture was kneaded in a three-roll mill to obtain the desired grease.
実施例４
リチウム１２ヒドロキシステアレート８．０重量部、脂
肪族炭化水素油（１００℃の粘度３．９ｃＳｔ） ７９
．１２重量部を各々秤取配合して２２０℃まで昇温し完
全に溶解させた後、１２０℃まで冷却したらポリメタノ
タレ−１６，４４重量部および前記脂肪炭化水素油６．
４４重量部とを混合し、１００℃に加熱し溶解させたも
のを加えた。室温まで冷却した後３段ロールミルで混練
し目的のグリースを得た。Example 4 8.0 parts by weight of lithium 12-hydroxystearate, aliphatic hydrocarbon oil (viscosity at 100°C 3.9 cSt) 79
．． 12 parts by weight of each were weighed out and blended, heated to 220°C to completely dissolve, and then cooled to 120°C, 16.44 parts by weight of polymethano sauce and the fatty hydrocarbon oil 6.
44 parts by weight were mixed, heated to 100°C, and dissolved. After cooling to room temperature, the mixture was kneaded in a three-roll mill to obtain the desired grease.
比較例１
ジフェニルメタン−４，４′−ジイソシアネート５゜４
６重量部を４４．４５重量部の脂肪族炭化水素油（１０
０℃の粘度３．９ｃＳｔ）に加え、８０℃に加熱し均一
に分散させた。これにオクチルアミン５．６４重量部お
よび前記脂肪族炭化水素油４４゜４５重量部とを混合し
、８０℃に加熱し溶解させたものを加え、激しく撹拌す
るとすぐにゲル状物質を生じた。撹拌を３０分間継続し
２００℃まで加熱、室温まで冷却した後３段ロールミル
で混練し、目的のグリースを得た。Comparative Example 1 Diphenylmethane-4,4'-diisocyanate 5°4
6 parts by weight to 44.45 parts by weight of aliphatic hydrocarbon oil (10
The viscosity at 0° C. was 3.9 cSt), and the mixture was heated to 80° C. for uniform dispersion. A mixture of 5.64 parts by weight of octylamine and 44.45 parts by weight of the above-mentioned aliphatic hydrocarbon oil was heated to 80 DEG C. to dissolve the mixture, and upon vigorous stirring, a gel-like substance was immediately formed. Stirring was continued for 30 minutes, heated to 200°C, cooled to room temperature, and then kneaded in a three-roll mill to obtain the desired grease.
比較例２
ジフェニルメタン−４，４′−ジイソシアネー） ５．
４６重量部を４４．４５重量部の鉱油（１００℃の粘度
３、６ｃＳｔ）に加え、８０℃に加熱し均一に分散させ
た。Comparative Example 2 Diphenylmethane-4,4'-diisocyanate) 5.
46 parts by weight were added to 44.45 parts by weight of mineral oil (viscosity 3.6 cSt at 100°C) and heated to 80°C to uniformly disperse.
これにオクチルアミン５．６４重量部および前記鉱油４
４．４５重量部とを混合し、８０℃に加熱し溶解させた
ものを加え、激しく撹拌するとすぐにゲル状物質を生じ
た。撹拌を３０分間継続し２００℃まで加熱、室温まで
冷却した後３段ロールミルで混練し、目的のグリースを
得た。To this was added 5.64 parts by weight of octylamine and 4 parts by weight of the mineral oil.
4.45 parts by weight of the mixture, heated to 80° C., dissolved, and stirred vigorously, immediately forming a gel-like substance. Stirring was continued for 30 minutes, heated to 200°C, cooled to room temperature, and then kneaded in a three-roll mill to obtain the desired grease.
比較例３
ジフェニルメタン−４，４′−ジイソシアネー）５．４
６重量部を４４．４５重量部の鉱油（１００℃の粘度６
．０ｃＳｔ）に加え、８０℃に加熱し均一に分散させた
。これにオクチルアミン５．６４重量部および前記鉱油
４４．４５重量部とを混合し、８０℃に加熱し溶解させ
たものを加え、激しく撹拌するとすぐにゲル状物質を生
じた。撹拌を３０分間継続し２００℃まで加熱、室温ま
で冷却した後３段ロールミルで混練し、目的のグリース
を得た。Comparative Example 3 Diphenylmethane-4,4'-diisocyanate) 5.4
6 parts by weight to 44.45 parts by weight of mineral oil (viscosity 6 at 100°C)
．． 0 cSt) and heated to 80°C to uniformly disperse. A mixture of 5.64 parts by weight of octylamine and 44.45 parts by weight of the above-mentioned mineral oil was added to the mixture by heating to 80°C and dissolved, and upon vigorous stirring, a gel-like substance was immediately formed. Stirring was continued for 30 minutes, heated to 200°C, cooled to room temperature, and then kneaded in a three-roll mill to obtain the desired grease.
比較例４は、低温用として市販されているグリースであ
る。Comparative Example 4 is a grease commercially available for low temperature applications.
又、比較例５は、一般用として市販されているグリース
である。Moreover, Comparative Example 5 is a grease commercially available for general use.
以上の如く調製した実施例１〜４および比較例１〜５の
グリース組成物について次の性能評価を行った。The following performance evaluations were performed on the grease compositions of Examples 1 to 4 and Comparative Examples 1 to 5 prepared as described above.
・ちょう度（ＪＩＳ Ｋ ２２２０５Ｊ）・滴 点（Ｊ
ＩＳ Ｋ ２２２０５．４）・減速機低温トルク試験：
ハーモニックドライブの特性試験装置を使用
し、−１０℃の環境でハ
ーモニックドライブの
損失トルクを測定した。- Consistency (JIS K 22205J) - Dropping point (J
IS K 22205.4)・Reducer low temperature torque test:
The loss torque of the harmonic drive was measured in a -10°C environment using a harmonic drive characteristic testing device.
指数は改善比率 優〉１〉劣
減速機耐久試験：ハーモニックドライブの耐久試験装置
を使用し、耐久性の
比較試験を行った。The index is the improvement ratio.Excellent〉1〉Inferior reducer durability test: A durability comparison test was conducted using Harmonic Drive's durability test equipment.
指数は改善比率 優〉１〉劣 結果を第１表に示す。The index is an improvement ratio of excellent to 1 to poor. The results are shown in Table 1.
第１図はハーモニックドライブＲの断面図である。 １・・・サーキュラスプライン ２・・・フレクスプライン ３・・・ウェーブ・ジエネレータ FIG. 1 is a sectional view of the harmonic drive R. 1...Circular spline 2...Flex spline 3... Wave generator
Claims (1)
学式、表等があります▼−−−（１） （式中のＲは炭素数が３〜１２のアルキル基、ｎは１〜
６の整数を示す。）で表わされる 脂肪族炭化水素油とポリメタクリレートが重量比で９９
：１ないし９０：１０から成る基油から構成されたこと
を特徴とする減速機用潤滑剤組成物。[Claims] 1. Thickener for lubricating grease and the following general formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ --- (1) (In the formula, R is an alkyl group having 3 to 12 carbon atoms. , n is 1~
Indicates an integer of 6. ) and polymethacrylate in a weight ratio of 99
A lubricant composition for a speed reducer, characterized in that it is comprised of a base oil having a ratio of: 1 to 90:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20380989A JP2863812B2 (en) | 1989-08-08 | 1989-08-08 | Lubricant composition for reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20380989A JP2863812B2 (en) | 1989-08-08 | 1989-08-08 | Lubricant composition for reduction gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03179094A true JPH03179094A (en) | 1991-08-05 |
| JP2863812B2 JP2863812B2 (en) | 1999-03-03 |
Family
ID=16480088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20380989A Expired - Lifetime JP2863812B2 (en) | 1989-08-08 | 1989-08-08 | Lubricant composition for reduction gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2863812B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002363588A (en) * | 2001-06-08 | 2002-12-18 | Koyo Seiko Co Ltd | Lubricating grease composition |
| WO2004037958A1 (en) * | 2002-10-28 | 2004-05-06 | Nsk Ltd. | Lubricating grease composition for deceleration gear and electric power steering |
| JP2006169441A (en) * | 2004-12-17 | 2006-06-29 | Ntn Corp | Grease composition and grease-charged antifriction bearing |
| US8058216B2 (en) | 2004-12-17 | 2011-11-15 | Ntn Corporation | Grease composition and grease-enclosed rolling bearing |
| EP3276210A1 (en) | 2016-07-28 | 2018-01-31 | Seiko Epson Corporation | Robot, gear device, and manufacturing method for gear device |
| US10036463B2 (en) | 2016-09-26 | 2018-07-31 | Seiko Epson Corporation | Robot and gear device |
| CN113355148A (en) * | 2021-05-28 | 2021-09-07 | 中国石油化工股份有限公司 | Lubricant for automobile driving shaft hub bearing joint surface and preparation method thereof |
-
1989
- 1989-08-08 JP JP20380989A patent/JP2863812B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002363588A (en) * | 2001-06-08 | 2002-12-18 | Koyo Seiko Co Ltd | Lubricating grease composition |
| WO2004037958A1 (en) * | 2002-10-28 | 2004-05-06 | Nsk Ltd. | Lubricating grease composition for deceleration gear and electric power steering |
| JP2006169441A (en) * | 2004-12-17 | 2006-06-29 | Ntn Corp | Grease composition and grease-charged antifriction bearing |
| US8058216B2 (en) | 2004-12-17 | 2011-11-15 | Ntn Corporation | Grease composition and grease-enclosed rolling bearing |
| EP3276210A1 (en) | 2016-07-28 | 2018-01-31 | Seiko Epson Corporation | Robot, gear device, and manufacturing method for gear device |
| US10344848B2 (en) | 2016-07-28 | 2019-07-09 | Seiko Epson Corporation | Robot, gear device, and manufacturing method for gear device |
| US10036463B2 (en) | 2016-09-26 | 2018-07-31 | Seiko Epson Corporation | Robot and gear device |
| CN113355148A (en) * | 2021-05-28 | 2021-09-07 | 中国石油化工股份有限公司 | Lubricant for automobile driving shaft hub bearing joint surface and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2863812B2 (en) | 1999-03-03 |
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