JP2899710B2 - Wear resistant lubricating oil - Google Patents
Wear resistant lubricating oilInfo
- Publication number
- JP2899710B2 JP2899710B2 JP31174989A JP31174989A JP2899710B2 JP 2899710 B2 JP2899710 B2 JP 2899710B2 JP 31174989 A JP31174989 A JP 31174989A JP 31174989 A JP31174989 A JP 31174989A JP 2899710 B2 JP2899710 B2 JP 2899710B2
- Authority
- JP
- Japan
- Prior art keywords
- vol
- lubricating oil
- oil
- wear
- surface pressure
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 「産業上の利用分野」 この発明は、潤滑油、特に耐摩耗性油圧作動油の高面
圧下での摩耗防止性を大巾に向上させたものに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil, and particularly to a lubricating oil in which abrasion resistance under a high surface pressure is greatly improved.
「従来の技術」 従来、潤滑油としては、多種多様のものが提供されて
おり、潤滑油の粘度グレードあるいは性能に基づく呼称
がJISなどで定められ、分類されている。[Prior Art] Conventionally, a wide variety of lubricating oils have been provided, and names based on the viscosity grade or performance of the lubricating oil are defined and classified by JIS or the like.
この潤滑油の中でも、高面圧条件での耐摩耗性が要求
されるものとして油圧作動油やタービン油（JIS規格に
おいては、タービン油 K2213のみ）などがある。この
油圧作動油は、主に工作機械、車両、船舶、航空機など
の油圧装置における潤滑油として利用される。Among these lubricating oils, there are hydraulic oils and turbine oils (only turbine oil K2213 in JIS standard) that require wear resistance under high surface pressure conditions. This hydraulic oil is mainly used as lubricating oil in hydraulic devices such as machine tools, vehicles, ships, and aircraft.
この油圧作動油は、油圧装置における高面圧下であっ
ても変質することなく各部材の潤滑性を保てるように調
整されており、既存品として、パラフィン系鉱油を基油
とし、この基油に、極圧剤や油性剤、流動点降下剤、酸
化防止剤、さび止め剤などの添加剤を所定量添加した組
成の製品が提供されている。This hydraulic fluid is adjusted to maintain the lubricity of each member without deteriorating even under high surface pressure in the hydraulic device.As an existing product, paraffinic mineral oil is used as a base oil, and There are provided products having a composition in which additives such as extreme pressure agents, oil agents, pour point depressants, antioxidants, and rust inhibitors are added in predetermined amounts.
「発明が解決しようとする課題」 しかしながら、既存の油圧作動油は、高面圧下での耐
摩耗性が十分でなく、300Kgf以上の高荷重で作動する油
圧装置に使用した場合に部品に摩耗を生じてしまうおそ
れがあった。"Problems to be solved by the invention" However, existing hydraulic fluids do not have sufficient abrasion resistance under high surface pressure, and when used in hydraulic equipment that operates with a high load of 300 kgf or more, parts may wear out. There was a possibility that this would occur.
その一方、油圧装置など各機器では性能向上、小型化
にともなって、既存の耐摩耗性潤滑油よりも高面圧下で
使用可能な潤滑油の提供が切望されている。On the other hand, with the improvement of performance and miniaturization of each device such as a hydraulic device, it has been desired to provide a lubricating oil that can be used under a higher surface pressure than existing wear-resistant lubricating oils.
この発明は、上記事情に鑑みてなされたもので、既存
の潤滑油よりも耐摩耗性を向上させた耐摩耗性潤滑油の
提供を目的としている。The present invention has been made in view of the above circumstances, and has as its object to provide a wear-resistant lubricating oil having improved abrasion resistance as compared with existing lubricating oils.
「課題を解決するための手段」 本発明者等は、上記目的を達成するべく、高面圧下に
おける耐摩耗性の優れた潤滑油を研究の結果、パラフィ
ン系鉱油を主成分とする潤滑基油中に、芳香族リン酸エ
ステルおよび少なくともオレイン酸、パルミチン酸およ
びステアリン酸を含む脂肪酸とを所定量添加することに
よって、高面圧下における耐摩耗性が著しく向上するこ
とを見出だし、本発明を完成した。"Means for Solving the Problems" The present inventors have studied a lubricating oil having excellent wear resistance under high surface pressure in order to achieve the above object, and have found that a lubricating base oil containing a paraffinic mineral oil as a main component By adding a predetermined amount of an aromatic phosphate ester and a fatty acid containing at least oleic acid, palmitic acid and stearic acid, it was found that the abrasion resistance under a high surface pressure was significantly improved, and the present invention was completed. did.
すなわち、この発明による耐摩耗性潤滑油は、パラフ
ィン系鉱油を主成分とする潤滑基油中に、芳香族リン酸
エステル１〜5vol％と、少なくともオレイン酸、パルミ
チン酸およびステアリン酸を含む脂肪酸１〜5vol％とを
添加してなるものである。That is, the wear-resistant lubricating oil according to the present invention comprises 1-5 vol% of an aromatic phosphate ester and a fatty acid 1 containing at least oleic acid, palmitic acid and stearic acid in a lubricating base oil mainly composed of paraffinic mineral oil. -5% by volume.
以下、この発明を更に詳細に説明する。 Hereinafter, the present invention will be described in more detail.
この発明による耐摩耗性潤滑油（以下、潤滑油とい
う）に使用されるパラフィン系鉱油としては、従来より
油圧作動用基油などとして使用されている所定粘度のパ
ラフィン系鉱油を使用することができる。As the paraffinic mineral oil used in the wear-resistant lubricating oil (hereinafter referred to as lubricating oil) according to the present invention, a paraffinic mineral oil having a predetermined viscosity conventionally used as a base oil for hydraulic operation or the like can be used. .
この基油中に添加される芳香族リン酸エステルとして
は、トリクレジルホスフェイトなどが特に好適に使用さ
れる。この芳香族リン酸エステルの添加量は１〜5vol％
の範囲とされ、さらに好ましくは1.0〜1.5vol％とされ
る。この芳香族リン酸エステルの添加量が1vol％以下で
あると、得られる潤滑油の高面圧下における耐摩耗性向
上の効果が十分に得られない。また添加量が5vol％以上
では、高面圧下における耐摩耗性の向上効果が頭打ちと
なり、製品コストの上昇につながるとともに、潤滑油の
粘度や潤滑性能を変化させてしまうために好ましくな
い。As the aromatic phosphate ester added to the base oil, tricresyl phosphate or the like is particularly preferably used. The addition amount of this aromatic phosphate is 1 to 5 vol%
And more preferably 1.0 to 1.5 vol%. If the amount of the aromatic phosphate is less than 1 vol%, the lubricating oil obtained will not be sufficiently improved in abrasion resistance under a high surface pressure. On the other hand, if the addition amount is 5 vol% or more, the effect of improving the abrasion resistance under a high surface pressure levels out, leading to an increase in product cost, and also changes the viscosity and lubrication performance of the lubricating oil, which is not preferable.
また、少なくともオレイン酸、パルミチン酸およびス
テアリン酸を含む脂肪酸の添加量は、これら脂肪酸の総
量で１〜5vol％、さらに好ましくは総量で1.1〜2.5vol
％（オレイン酸0.5〜1.0vol％、ステアリン酸0.5〜1.0v
ol％、パルミチン酸0.1〜0.5vol％）とされる。The amount of the fatty acid containing at least oleic acid, palmitic acid and stearic acid is 1 to 5 vol% in total of these fatty acids, and more preferably 1.1 to 2.5 vol in total.
% (Oleic acid 0.5-1.0vol%, stearic acid 0.5-1.0v
ol%, palmitic acid 0.1-0.5 vol%).
これらの脂肪酸は、摩擦面に吸着膜を形成し、固体接
触の面積を少なくする効果を有している。この脂肪酸の
添加量が、総量で1vol％以下であると、高面圧下におけ
る耐摩耗性の向上効果が十分得られず、5vol％以上添加
すると、耐摩耗性の向上効果が頭打ちとなるとともに、
潤滑油の安定性が悪くなり、好ましくない。These fatty acids have an effect of forming an adsorption film on the friction surface and reducing the area of solid contact. If the total amount of the fatty acid is 1 vol% or less, the effect of improving the wear resistance under a high surface pressure cannot be sufficiently obtained, and if the amount is 5 vol% or more, the effect of improving the wear resistance will level off,
The stability of the lubricating oil deteriorates, which is not preferable.
また、基油中には上記芳香族リン酸エステルおよび上
記脂肪酸の他に、酸化防止剤、極圧剤や油性剤、流動点
降下剤などの添加剤が添加されるが、これらの添加剤と
しては、芳香族リン酸エステルおよび上記脂肪酸の高面
圧下における耐摩耗性の向上効果を妨げないものが使用
される。In addition, in the base oil, in addition to the aromatic phosphate ester and the fatty acid, additives such as an antioxidant, an extreme pressure agent and an oil agent, and a pour point depressant are added. The one which does not hinder the effect of improving the abrasion resistance of the aromatic phosphate and the fatty acid under a high surface pressure is used.
これら他の添加剤とその好適な添加量とを例示すれ
ば、酸性アルキルリン酸エステル（0.1vol％未満）、2.
6−ジ−ter−ブチルパラクレゾール（0.5〜1.0vol％）
などである。Illustrating these other additives and their preferred amounts are acidic alkyl phosphates (less than 0.1 vol%), 2.
6-di-ter-butylparacresol (0.5 to 1.0 vol%)
And so on.
以下、実施例によりこの発明による潤滑油の効果を明
確にする。Hereinafter, the effects of the lubricating oil according to the present invention will be clarified by examples.
「実施例」 （実施例１） トリクレジルホスフェイト（芳香族リン酸エステル） …1.3 vol％ オレイン酸 …0.7 vol％ ステアリン酸 …0.7 vol％ パルミチン酸 …0.3 vol％ （脂肪酸総量1.7vol％） 酸性アルキルリン酸エステル 0.03vol％ 2,6−ジ−ter−ブチルパラクレゾール …0.7 vol％ パラフィン系鉱油 …残部 の組成の潤滑油（油圧作動油）を作製した。"Examples" (Example 1) Tricresyl phosphate (aromatic phosphate ester) ... 1.3 vol% Oleic acid ... 0.7 vol% Stearic acid ... 0.7 vol% Palmitic acid ... 0.3 vol% (Total fatty acid amount 1.7 vol%) Acidic alkyl phosphate ester 0.03 vol% 2,6-di-ter-butylparacresol ... 0.7 vol% Paraffinic mineral oil ... A lubricating oil (hydraulic hydraulic oil) with the remaining composition was prepared.
この潤滑油を用い、ASTM−D2782に準ずる方法で摩耗
テスト（所定荷重における摩耗量の測定）を行った。Using this lubricating oil, an abrasion test (measurement of the amount of abrasion at a predetermined load) was performed according to a method according to ASTM-D2782.
この結果、第１図に示すように、この潤滑油を用いた
場合には、荷重415Kgfとしても摩耗量は0.2mm3程度であ
り、高面圧下における耐摩耗性が極めて良好であること
が確認された。As a result, as shown in FIG. 1, when this lubricating oil was used, the wear amount was about 0.2 mm 3 even at a load of 415 kgf, and it was confirmed that the wear resistance under high surface pressure was extremely good. Was done.
（比較例） 市販の油圧作動油（A,B,C社製）を用いて、先の実施
例と同じ摩耗テストを行った。(Comparative Example) The same wear test as in the previous example was performed using a commercially available hydraulic fluid (manufactured by A, B, C).
この結果、第１図に示すように、荷重300Kgf以上の高
面圧下で特に摩耗が顕著となり、高面圧下では耐摩耗性
が十分得られないことが判明した。As a result, as shown in FIG. 1, it was found that abrasion was particularly remarkable under a high surface pressure with a load of 300 kgf or more, and sufficient wear resistance was not obtained under a high surface pressure.
「発明の効果」 以上説明したように、この発明による耐摩耗性潤滑油
は、既存の潤滑油に比べ、高面圧下における耐摩耗性を
大巾に向上させることができ、既存の潤滑油では著しい
摩耗が生じてしまう高面圧下であっても使用可能な高性
能の耐摩耗性潤滑油を提供できる効果がある。[Effects of the Invention] As described above, the wear-resistant lubricating oil according to the present invention can significantly improve the wear resistance under a high surface pressure as compared with the existing lubricating oil. This has the effect of providing a high-performance wear-resistant lubricating oil that can be used even under a high surface pressure at which significant wear occurs.
第１図は、この発明の実施例を説明するためのもので、
荷重と摩耗量との関係を示すグラフである。FIG. 1 is for explaining an embodiment of the present invention.
It is a graph which shows the relationship between load and abrasion loss.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ１０Ｎ 40:08 (56)参考文献 特開 昭53−104608（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C10M 129/40,137/104 C10N 30:06 ────────────────────────────────────────────────── ─── front page continued (51) Int.Cl. 6 identifications FI C10N 40:08 (56) references Patent Sho 53-104608 (JP, a) (58 ) investigated the field (Int.Cl. 6 , DB name) C10M 129 / 40,137 / 104 C10N 30:06
Claims (1)
中に、芳香族リン酸エステル１〜5vol％と、オレイン酸
0.5〜1.0vol％、ステアリン酸0.5〜1.0vol％及びパルミ
チン酸0.1〜0.5vol％を添加してなる耐摩耗性潤滑油。1. A lubricating base oil containing a paraffinic mineral oil as a main component, wherein 1 to 5 vol% of an aromatic phosphoric ester and oleic acid
A wear-resistant lubricating oil comprising 0.5-1.0 vol%, stearic acid 0.5-1.0 vol% and palmitic acid 0.1-0.5 vol%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31174989A JP2899710B2 (en) | 1989-11-30 | 1989-11-30 | Wear resistant lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31174989A JP2899710B2 (en) | 1989-11-30 | 1989-11-30 | Wear resistant lubricating oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03172393A JPH03172393A (en) | 1991-07-25 |
| JP2899710B2 true JP2899710B2 (en) | 1999-06-02 |
Family
ID=18021015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31174989A Expired - Lifetime JP2899710B2 (en) | 1989-11-30 | 1989-11-30 | Wear resistant lubricating oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2899710B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013166901A (en) * | 2012-02-17 | 2013-08-29 | Nsk Ltd | Lubricant, and rolling bearing including the same |
-
1989
- 1989-11-30 JP JP31174989A patent/JP2899710B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03172393A (en) | 1991-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2573568A (en) | Lubricant composition containing dialkyl trihaloalkane phosphonate as an extreme pressure agent | |
| EP0086513B1 (en) | Lubricating oil composition | |
| JPH0331760B2 (en) | ||
| CA1248517A (en) | Metal working lubricant | |
| KR19980018492A (en) | Viscosity Index Improvement Additives for Phosphate Ester-Containing Hydraulic Fluids | |
| US5391307A (en) | Lubricating oil composition | |
| EP0668900A1 (en) | Greases | |
| EP0407124A1 (en) | Lubricating oil composition | |
| US6028038A (en) | Halogenated extreme pressure lubricant and metal conditioner | |
| CA2351447A1 (en) | Non-sludging, high temperature resistant food compatible lubricant for food processing machinery | |
| CN1727458A (en) | Combination of oil for pair of gear worm | |
| US4664821A (en) | Lubricant additive concentrate containing isomerized jojoba oil | |
| CA1223861A (en) | Lubricant additive concentrate | |
| EP0237804A2 (en) | Oil composition for manual transmission | |
| US2830956A (en) | Hydraulic power transmission fluids | |
| JPS5925890A (en) | Common lubricating oil composition | |
| JP2899710B2 (en) | Wear resistant lubricating oil | |
| JPH0339399A (en) | Lubricating oil composition | |
| US2780597A (en) | Lubricating compositions | |
| CA1085374A (en) | Lubricant composition | |
| US4822505A (en) | Load-carrying grease | |
| JPS5971395A (en) | Versatile lubrication oil composition | |
| JPH05331477A (en) | Hydraulic oil composition | |
| EP0569006B1 (en) | Aluminum plate excellent in formability | |
| JPH06145684A (en) | Hydraulic actuation oil composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080319 Year of fee payment: 9 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080319 Year of fee payment: 9 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 10 Free format text: PAYMENT UNTIL: 20090319 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100319 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 11 Free format text: PAYMENT UNTIL: 20100319 |