JPH04130193A - Grease for synchronous joint - Google Patents
Grease for synchronous jointInfo
- Publication number
- JPH04130193A JPH04130193A JP41515590A JP41515590A JPH04130193A JP H04130193 A JPH04130193 A JP H04130193A JP 41515590 A JP41515590 A JP 41515590A JP 41515590 A JP41515590 A JP 41515590A JP H04130193 A JPH04130193 A JP H04130193A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- copolymer
- grease
- compound
- ethylene
- 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
- 239000004519 grease Substances 0.000 title claims abstract description 30
- 230000001360 synchronised effect Effects 0.000 title 1
- 229920001577 copolymer Polymers 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 17
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000005977 Ethylene Substances 0.000 claims abstract description 12
- -1 urea compound Chemical class 0.000 claims abstract description 11
- 239000002480 mineral oil Substances 0.000 claims abstract description 10
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 10
- 229920000193 polymethacrylate Polymers 0.000 claims abstract description 9
- 239000004711 α-olefin Substances 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 239000002199 base oil Substances 0.000 claims abstract description 7
- 239000004202 carbamide Substances 0.000 claims abstract description 4
- 239000005078 molybdenum compound Substances 0.000 claims description 16
- 150000002752 molybdenum compounds Chemical class 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 150000001336 alkenes Chemical class 0.000 claims description 8
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 7
- 239000012990 dithiocarbamate Substances 0.000 claims description 4
- 150000003752 zinc compounds Chemical class 0.000 claims description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 abstract description 4
- 239000005069 Extreme pressure additive Substances 0.000 abstract description 3
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical compound [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 abstract 1
- 229920001038 ethylene copolymer Polymers 0.000 abstract 1
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 abstract 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 10
- 229910052750 molybdenum Inorganic materials 0.000 description 10
- 239000011733 molybdenum Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 239000003963 antioxidant agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 3
- RQVGZVZFVNMBGS-UHFFFAOYSA-N n-octyl-n-phenylaniline Chemical compound C=1C=CC=CC=1N(CCCCCCCC)C1=CC=CC=C1 RQVGZVZFVNMBGS-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- XMKLTEGSALONPH-UHFFFAOYSA-N 1,2,4,5-tetrazinane-3,6-dione Chemical group O=C1NNC(=O)NN1 XMKLTEGSALONPH-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 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
- 239000003921 oil Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Landscapes
- Lubricants (AREA)
Abstract
Description
［０００１］ [0001]
本発明は等速ジヨイント、特にプランジング型等速ジヨ
イント用グリースに関するものである。
［０００２］The present invention relates to a grease for constant velocity joints, particularly plunging type constant velocity joints. [0002]
プランジング型等速ジヨイントには代表的なものにはダ
ブルオフセット型等速ジヨイント（ＤＯＪ型）とトリポ
ード型等速ジヨイント（ＴＪ型）とがある。
［０００３］
従来潤滑剤として二硫化モリブデン、鉛系極圧剤、硫黄
−リン系極圧剤などを添加したグリースが使用されてい
た。しかし上記グリースを充填したダブルオフセット型
等速ジヨイントの実装車では高速走行時においてビート
音やこもり音が発生したり、車体が振動する欠点があっ
た。また、トリポード型等速ジヨイントの実装車では加
速時に、車体に横振れが生じるという欠点があった。ま
た、プランジング型等速ジヨイントは転がりに比べて滑
り要素がきわめて多いので角度をもって回転トルクを伝
達すると摺動部分の摩擦抵抗によって軸力が発生する。
［０００４］
軸力の発生が太きいと車体に振動が起こり、果貝に不快
感を与える。したがって軸力は可能な限り低くすること
が望ましい。
［０００５］
そこでプランジング型等速ジヨイントにおいては、内部
に潤滑剤を充填して摩擦抵抗を下げ摺動性の向上を図る
ようにしている。
［０００６］Typical plunging type constant velocity joints include double offset type constant velocity joints (DOJ type) and tripod type constant velocity joints (TJ type). [0003] Conventionally, greases containing molybdenum disulfide, lead-based extreme pressure agents, sulfur-phosphorus-based extreme pressure agents, etc. have been used as lubricants. However, vehicles equipped with double offset type constant velocity joints filled with the above-mentioned grease have the disadvantage that they generate beat or muffled noises and vibrate the vehicle body when running at high speeds. Additionally, vehicles equipped with tripod-type constant velocity joints had the disadvantage that the vehicle body would sway laterally during acceleration. Furthermore, since a plunging type constant velocity joint has significantly more sliding elements than a rolling joint, when rotating torque is transmitted at an angle, an axial force is generated due to the frictional resistance of the sliding part. [0004] When the axial force is generated too large, vibrations occur in the vehicle body, giving discomfort to the shellfish. Therefore, it is desirable to keep the axial force as low as possible. [0005] Therefore, in a plunging type constant velocity joint, a lubricant is filled inside to reduce frictional resistance and improve sliding properties. [0006]
このように従来の技術においては等速ジヨイント特にプ
ランジング型等速ジヨイントを装備した車両等が高速時
または加速走行時に車体のビート音、こもり音または横
振れ等を発生しないようにするための低摩擦係数のグリ
ースが得られないという問題点があった。
［０００７］
上記の問題点を解決するために、本発明は基油にジウレ
ア系化合物、有機モリブデン化合物、極圧剤および特定
の共重合体を１種類混合して等速ジヨイント用グリース
としたものである。
［０００８］As described above, in the conventional technology, low-temperature joints have been developed to prevent vehicles equipped with constant velocity joints, especially plunging type constant velocity joints, from generating beat sounds, muffled sounds, or lateral vibrations of the vehicle body when running at high speeds or accelerating. There was a problem that a grease with a high friction coefficient could not be obtained. [0007] In order to solve the above problems, the present invention provides a grease for constant velocity joints by mixing one type of base oil with a diurea compound, an organic molybdenum compound, an extreme pressure agent, and a specific copolymer. It is. [0008]
本発明は、鉱油とウレア系化合物とよりなるベースグリ
ースにグリース組成物の重量基準で、
（１）有機モリブデン化合物として、
ジチオカルバメート系モリブデン化合物０．５〜５重量
％、ジチオフォスフェート系モリブデン化合物０．５〜
５重量％、（２）極圧剤としてジチオフォスフェート系
亜鉛化合物０．５〜１０重量％、（３）エチレンと分枝
状α−オレフィンとの共重合体０．５〜６０重量％、ま
たはオレフィンとの共重合体２〜７０重量％、またはポ
リメタクリレートの共１００℃で１３〜４６０ｃＳｔの
動粘度を得られることを特徴とする等速ジヨイント用グ
リースに関するものである。
［０００９］
また、本発明のグリースには酸化防止剤、油性剤、防錆
剤等を適宜添加することができる。
［００１０１
本発明で使用する基油は鉱油系もしくは合成炭化水素系
の潤滑油である。増粘剤としてはリチウム石鹸などの金
属石鹸より耐熱性がすぐれたウレア化合物（ジウレア系
化合物）等が使用される。
［００１１３
本発明のグリースで使用する有機モリブデン化合物とし
ては、モリブデンジアルキルジチオカーバイトとモリブ
デンジアルキルジチオフォスフェートまたはモリブデン
ジアリールジチオフォスフェートとを併用している。
［００１２］
また有機モリブデン化合物の量は、多過ぎても効果は同
じかもしくは悪くなるのでそれぞれ０． ５〜５重量％
づつであり、合計で０．５〜１０重量％、好ましくは２
〜５重量％である。
［００１３１
本発明で使用する極圧剤の亜鉛化合物はジンクジアルキ
ルジチオフォスフェートまたはジンクジアリールジチオ
フォスフェートのそれぞれ単独または２種以上の混合物
である。上記の有機亜鉛化合物は上記の有機モリブデン
化合物とともにきわめて有効な極圧添加剤である。その
添加量は多過ぎても効果が同じかまたは悪くなるので０
．５〜１０重量％、好ましくは０．５〜５重量％である
。
［００１４１
次に本発明で使用する共重合体は、エチレンと分枝状α
−オレフィンとのオリゴマー（式１）、またはオレフィ
ンの共重合体（式２） またはポリメタクリレートの共
重合体（式３）であり、一般的に下記の式で表される。
［００１５］The present invention uses a base grease consisting of mineral oil and a urea compound, based on the weight of the grease composition, and (1) organic molybdenum compounds such as 0.5 to 5% by weight of a dithiocarbamate molybdenum compound and a dithiophosphate molybdenum compound. 0.5~
5% by weight, (2) 0.5 to 10% by weight of a dithiophosphate zinc compound as an extreme pressure agent, (3) 0.5 to 60% by weight of a copolymer of ethylene and branched α-olefin, or The present invention relates to a grease for constant velocity joints which is characterized in that it can obtain a kinematic viscosity of 13 to 460 cSt at 100°C, consisting of 2 to 70% by weight of a copolymer with olefin or polymethacrylate. [0009] Furthermore, an antioxidant, an oily agent, a rust preventive, and the like can be appropriately added to the grease of the present invention. [00101 The base oil used in the present invention is a mineral oil-based or synthetic hydrocarbon-based lubricating oil. As the thickener, a urea compound (diurea compound) or the like is used, which has better heat resistance than metal soaps such as lithium soap. [00113] As the organic molybdenum compound used in the grease of the present invention, molybdenum dialkyl dithiocarbide and molybdenum dialkyl dithiophosphate or molybdenum diaryldithiophosphate are used in combination. [0012] Also, the amount of the organic molybdenum compound should be set at 0.0 or 0.0, since even if it is too large, the effect will be the same or worse. 5-5% by weight
total of 0.5 to 10% by weight, preferably 2
~5% by weight. [00131] The zinc compound of the extreme pressure agent used in the present invention is zinc dialkyl dithiophosphate or zinc diaryldithiophosphate, each alone or in a mixture of two or more. The organozinc compounds mentioned above, together with the organomolybdenum compounds mentioned above, are very effective extreme pressure additives. Even if the amount added is too large, the effect will be the same or worse, so 0.
．． 5 to 10% by weight, preferably 0.5 to 5% by weight. [00141 Next, the copolymer used in the present invention is composed of ethylene and branched α
- An oligomer with an olefin (Formula 1), a copolymer of an olefin (Formula 2), or a copolymer of polymethacrylate (Formula 3), and is generally represented by the following formula. [0015]
【化１】 ［００１６］[Chemical formula 1] [0016]
【化２】 ［００１７］[Case 2] [0017]
【化３】
製３
０ＯＲ
（式中Ｒはアルキル基を示す）
上記共重合体は、極性基も含むあるいは含まない炭化水
素系の合成油であり、低面圧時の軸力低域に有効である
。
［００１８］
共重合体の添加量は多過ぎても効果は同じかやや悪くな
るので、エチレンと分枝状α−オレフィンとの共重合体
の場合は、０．５〜６０重量％、好ましくは５〜３０重
量％、特に好ましくは１０ないし３０重量％である。ま
た、オレフィンの共重合体の場合は、２〜７０重景％、
好ましくは７〜３９重量％、特に好ましくは１３ないし
３９重量％である。また、ポリメタクリレートの共重合
体の場合には、２〜８５重量％、好ましくは７〜４７重
量％、特に好ましくは１３ないし４７重量％である。
比較例 １
ベースグリースとして精製鉱油（パラフィン系基油、粘
度指数９０、動粘度４０℃で８０．３ｃＳｔ、１００℃
で１Ｏｃｓｔ、流動点−１７，５℃）９０重量％とジウ
レア系化合物１０重量％とを混合し３本ロールで処理し
てグリース組成物を得た。この組成物の性状としてちょ
う度、滴点、摩擦係数および軸力を試、験しな。結果を
表１に示す。
比較例 ２
グリース組成物の重量基準で基油として精製鉱油（比較
例１と同じもの）８３重量％とジウレア系化合物１０重
量％とを含むベースグリースに有機モリブデン化合物■
（モリブデンジアルキルジチオカーバメート）を４重量
％、極圧剤としてジンクジアルキルジチオフォスフェー
トを２重量％、および酸化防止剤としてオクチルジフェ
ニルアミン１重量％を添加し、よく混合し３本ロールで
処理した。得られたグリース組成物の性状の試験結果を
表１に示す。
比較例 ３
比較例２において、有機モリブデン化合物として同化合
物■（モリブデンジアルキルジチオカーバメート）２重
量％および同化合物■（モリブデンジアルキルジチオフ
ォスフェート）２重量％を用いたほかは比較例２と同様
にしてグリース組成物を得た。この組成物の性状の結果
を表１に示す。
実施例 １
基油として精製鉱油（比較例１と同じもの）８２重量％
とジウレア系化合物１０重量％とを含有するベースグリ
ースにオリゴマーとしてエチレンと分枝状のα−オレフ
ィンとの共重合体（分子量３７００）１重量％、有機モ
リブデン化合物■（モリブデンジアルキルジチオカーバ
メート）２重量％、有機モリブデン化合物■（モリブデ
ンジアルキルジチオフォスフェート）２重量％、極圧剤
としてジンクジアルキルジチオフォスフェート２重量％
および酸化防止剤としてオクチルジフェニルアミン１重
量％を添加し、よく混合し、３本ロールで処理してグリ
ース組成物を得た。
［００１９］
次いで、この組成物の性能試験を行なった。結果を表１
に示す。
実施例 ２〜２１
実施例１と同じ成分を用い、鉱油およびエチレンと分枝
状のα−オレフィンとの共重合体、鉱油およびオレフィ
ンの共重合体、鉱油およびポリメタクリレートの共重合
体の混合量を変化させて実施例１と同様に表１〜３に示
すような実施例２〜２１のグリース組成物を得た。次い
でこれらの組成物について実施例１と同様にそれらの性
能を試験した。その結果を表１〜３に示す。
［００２０］
表１の結果より、比較例３と実施例１〜７（エチレンと
分枝状α−オレフィンとの共重合体）および実施例８〜
１４（オレフィンの共重合体）および実施例１５〜２１
（ポリメタクリレートの共重合体）を比較すれば明ら
かなように、低摩擦係数のグリースに本発明で使用する
エチレンと分校状α−オレフィンとの共重合体あるいは
オレフィンの共重合体あるいはポリメタクリレートの共
重合体を添加することにより、その低摩擦係数の性能は
変らなかったカミ一方軸力は表１〜３および図１に示す
ように本発明の共重合体を含まない低摩擦係数グリース
よりも大幅に低減された。
［００２１］
これは、ジウレア系化合物、有機モリブデン化合物、極
圧剤および上記共重合体の相乗効果によるものと考えら
れる。
［００２２］
［００２３］
［００２４］[Chemical formula 3] 30OR (In the formula, R represents an alkyl group) The above copolymer is a hydrocarbon-based synthetic oil that may or may not contain polar groups, and is effective in reducing the axial force in the low range at low surface pressure. It is. [0018] Even if the amount of the copolymer added is too large, the effect will be the same or slightly worse, so in the case of a copolymer of ethylene and a branched α-olefin, the amount is 0.5 to 60% by weight, preferably 0.5 to 60% by weight. 5 to 30% by weight, particularly preferably 10 to 30% by weight. In addition, in the case of olefin copolymers, 2 to 70%,
Preferably it is 7 to 39% by weight, particularly preferably 13 to 39% by weight. In the case of polymethacrylate copolymers, the amount is 2 to 85% by weight, preferably 7 to 47% by weight, particularly preferably 13 to 47% by weight. Comparative Example 1 Refined mineral oil (paraffinic base oil, viscosity index 90, kinematic viscosity 80.3 cSt at 40°C, 100°C
A grease composition was obtained by mixing 90 wt. The properties of this composition include consistency, dropping point, coefficient of friction, and axial force. The results are shown in Table 1. Comparative Example 2 An organic molybdenum compound ■ was added to a base grease containing 83% by weight of refined mineral oil (same as in Comparative Example 1) and 10% by weight of a diurea compound as a base oil based on the weight of the grease composition.
4% by weight of (molybdenum dialkyl dithiocarbamate), 2% by weight of zinc dialkyl dithiophosphate as an extreme pressure agent, and 1% by weight of octyldiphenylamine as an antioxidant were added, mixed well, and treated with three rolls. Table 1 shows the test results of the properties of the obtained grease composition. Comparative Example 3 Comparative Example 2 was carried out in the same manner as in Comparative Example 2, except that 2% by weight of the same compound ■ (molybdenum dialkyldithiocarbamate) and 2% by weight of the same compound ■ (molybdenum dialkyldithiophosphate) were used as the organic molybdenum compounds. A grease composition was obtained. Table 1 shows the results of the properties of this composition. Example 1 82% by weight of refined mineral oil (same as Comparative Example 1) as base oil
and 10% by weight of a diurea compound, 1% by weight of a copolymer of ethylene and a branched α-olefin (molecular weight 3700) as an oligomer, and 2% by weight of an organic molybdenum compound (molybdenum dialkyl dithiocarbamate). %, organic molybdenum compound (molybdenum dialkyldithiophosphate) 2% by weight, zinc dialkyldithiophosphate 2% by weight as an extreme pressure agent
Then, 1% by weight of octyldiphenylamine was added as an antioxidant, mixed well, and treated with three rolls to obtain a grease composition. [0019] Next, a performance test of this composition was conducted. Table 1 shows the results.
Shown below. Examples 2 to 21 Using the same components as in Example 1, mixing amounts of mineral oil and a copolymer of ethylene and branched α-olefin, a copolymer of mineral oil and olefin, and a copolymer of mineral oil and polymethacrylate Grease compositions of Examples 2 to 21 as shown in Tables 1 to 3 were obtained in the same manner as in Example 1 by changing the formula. These compositions were then tested for their performance in the same manner as in Example 1. The results are shown in Tables 1-3. [0020] From the results in Table 1, Comparative Example 3, Examples 1 to 7 (copolymer of ethylene and branched α-olefin), and Examples 8 to
14 (copolymer of olefin) and Examples 15-21
(copolymer of polymethacrylate), it is clear that the copolymer of ethylene and branched α-olefin used in the present invention, the copolymer of olefin, or the copolymer of polymethacrylate used in the present invention for grease with a low coefficient of friction. Although the addition of the copolymer did not change its low-friction coefficient performance, the axial force on one side was higher than that of the low-friction coefficient grease that did not contain the copolymer of the present invention, as shown in Tables 1 to 3 and Figure 1. significantly reduced. [0021] This is thought to be due to the synergistic effect of the diurea compound, organic molybdenum compound, extreme pressure agent, and the above copolymer. [0022] [0023] [0024]
【表３】
注）
表１において、オリゴマーは、エチレンと分枝状α−オ
レフィンとの共重合体（分子量３７００） 表２にお
けるオレフィンコポリマーは、極性基を含まないオレフ
ィンの共重合体（分子量３５０００） 表３における
ポリメタクリレートの共重合体は、極性基を含むもの（
分子量９５０００） ウレア系化合物はジウレアを主
成分とするウレア化合物、有機モリブデン化合物■はモ
リブデンジアルキルジチオカーバメート、有機モリブデ
ン化合物■はモリブデンジアルキルジチオフォスフェー
ト、極圧剤■はジンクジアルキルジチオフォスフェート
、酸化防止剤■はオクチルジフェニルアミンである。
［００２５］
またグリース組成物の性状および動粘度は次の試験方法
により測定した。
［００２６］
ちょう度 ＪＩＳＫ２２２０ ５．３
滴 点 ＪＩＳＫ２２２０ ５．４
摩擦係数 ＡＳＴＭＤ２２６６準拠（条件）（５０ｋｇ
−ｆＸ６００ｒｐｍＸ室温×１５分）軸力、実車（ＤＯ
Ｊ型装着車）試、験によるｄＢ＝２０Ｌｏｇ （ｋｇ−
ｆ）
本発明のグリースは表１〜３から明らかなように低い摩
擦係数を有し、かつ極めて良好な低い軸力をもっている
。
［００２７］[Table 3] Note: In Table 1, the oligomer is a copolymer of ethylene and a branched α-olefin (molecular weight 3,700); in Table 2, the olefin copolymer is a copolymer of olefins containing no polar groups (molecular weight 35,000 ) The polymethacrylate copolymers in Table 3 are those containing polar groups (
Molecular weight: 95,000) Urea compounds are urea compounds whose main component is diurea, organic molybdenum compounds (■) are molybdenum dialkyldithiocarbamates, organic molybdenum compounds (■) are molybdenum dialkyldithiophosphates, extreme pressure agents (■) are zinc dialkyldithiophosphates, and antioxidants. Agent (2) is octyldiphenylamine. [0025] Further, the properties and kinematic viscosity of the grease composition were measured by the following test method. [0026] Consistency JISK2220 5.3 Drop point JISK2220 5.4 Friction coefficient Based on ASTM D2266 (conditions) (50kg
-fX600rpmXroom temperature×15min) Axial force, actual vehicle (DO
dB = 20Log (kg-
f) As is clear from Tables 1 to 3, the grease of the present invention has a low coefficient of friction and very good low axial force. [0027]
本発明のグリースは低い摩擦係数を有し、しかもすぐれ
た低い軸力を有しており、今迄以上に乗員への不快感を
減少させ、快適な運転環境をあたえるとかできる。The grease of the present invention has a low coefficient of friction and excellent low axial force, and can reduce discomfort to occupants more than ever before, providing a more comfortable driving environment.
【図１】[Figure 1]
【書類名】 図面[Document name] Drawing
【図１】[Figure 1]
Claims (1)
リースにグリース組成物の重量基準で、 （１）有機モリブデン化合物として、 ジチオカルバメート系モリブデン化合物０．５〜５重量
％、ジチオフォスフェート系モリブデン化合物０．５〜
５重量％、（２）極圧剤としてジチオフォスフェート系
亜鉛化合物０．５〜１０重量％、（３）エチレンと分枝
状α−オレフィンとの共重合体０．５〜６０重量％、ま
たはオレフィンとの共重合体２〜７０重量％、またはポ
リメタクリレートの共重合体２〜８５重量％を混合する
ことにより、基油と共重合体との混合物が１００℃で１
３〜４６０ｃＳｔの動粘度を得られることを特徴とする
等速ジョイント用グリース。Claim 1: A base grease consisting of mineral oil and a urea compound, based on the weight of the grease composition, containing (1) 0.5 to 5% by weight of a dithiocarbamate molybdenum compound and a dithiophosphate molybdenum compound as organic molybdenum compounds. Compound 0.5~
5% by weight, (2) 0.5 to 10% by weight of a dithiophosphate zinc compound as an extreme pressure agent, (3) 0.5 to 60% by weight of a copolymer of ethylene and branched α-olefin, or By mixing 2 to 70% by weight of a copolymer with olefin or 2 to 85% by weight of a copolymer of polymethacrylate, the mixture of base oil and copolymer becomes 1% by weight at 100°C.
Grease for constant velocity joints, characterized by being able to obtain a kinematic viscosity of 3 to 460 cSt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41515590A JP2919614B2 (en) | 1989-12-27 | 1990-12-27 | Grease for constant velocity joints |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33670289 | 1989-12-27 | ||
| JP1-336702 | 1989-12-27 | ||
| JP41515590A JP2919614B2 (en) | 1989-12-27 | 1990-12-27 | Grease for constant velocity joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04130193A true JPH04130193A (en) | 1992-05-01 |
| JP2919614B2 JP2919614B2 (en) | 1999-07-12 |
Family
ID=26575552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41515590A Expired - Lifetime JP2919614B2 (en) | 1989-12-27 | 1990-12-27 | Grease for constant velocity joints |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2919614B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007302761A (en) * | 2006-05-10 | 2007-11-22 | Showa Shell Sekiyu Kk | Grease composition for constant velocity joint |
| JP2008069282A (en) * | 2006-09-14 | 2008-03-27 | Ntn Corp | Grease composition for constant velocity joint and constant velocity joint |
| WO2010024056A1 (en) | 2008-08-28 | 2010-03-04 | 日産自動車株式会社 | Grease composition |
| WO2010027019A1 (en) * | 2008-09-05 | 2010-03-11 | Ntn株式会社 | Grease composition, and roller bearing and universal joint packed with said grease composition |
| JP2010059369A (en) * | 2008-09-05 | 2010-03-18 | Ntn Corp | Grease composition, roller bearing and universal joint with the grease composition sealed therein |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101846694B1 (en) | 2016-08-17 | 2018-04-06 | 현대자동차주식회사 | Grease composition with improved highest-pressure resistance and small friction force |
-
1990
- 1990-12-27 JP JP41515590A patent/JP2919614B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007302761A (en) * | 2006-05-10 | 2007-11-22 | Showa Shell Sekiyu Kk | Grease composition for constant velocity joint |
| JP2008069282A (en) * | 2006-09-14 | 2008-03-27 | Ntn Corp | Grease composition for constant velocity joint and constant velocity joint |
| WO2010024056A1 (en) | 2008-08-28 | 2010-03-04 | 日産自動車株式会社 | Grease composition |
| US8445415B2 (en) | 2008-08-28 | 2013-05-21 | Nissan Motor Co., Ltd. | Grease composition |
| WO2010027019A1 (en) * | 2008-09-05 | 2010-03-11 | Ntn株式会社 | Grease composition, and roller bearing and universal joint packed with said grease composition |
| JP2010059369A (en) * | 2008-09-05 | 2010-03-18 | Ntn Corp | Grease composition, roller bearing and universal joint with the grease composition sealed therein |
| US8673829B2 (en) | 2008-09-05 | 2014-03-18 | Ntn Corporation | Grease composition and grease composition-enclosed rolling bearing and universal joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2919614B2 (en) | 1999-07-12 |
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