JP3290010B2 - Grease composition for sealed rolling bearings - Google Patents
Grease composition for sealed rolling bearingsInfo
- Publication number
- JP3290010B2 JP3290010B2 JP27908193A JP27908193A JP3290010B2 JP 3290010 B2 JP3290010 B2 JP 3290010B2 JP 27908193 A JP27908193 A JP 27908193A JP 27908193 A JP27908193 A JP 27908193A JP 3290010 B2 JP3290010 B2 JP 3290010B2
- Authority
- JP
- Japan
- Prior art keywords
- grease composition
- group
- oil
- weight
- bearing
- 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
Landscapes
- Lubricants (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は密封ころがり軸受用のグ
リース組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grease composition for a sealed rolling bearing.
【０００２】[0002]
【従来の技術】密封玉軸受はその長寿命化と定期点検間
隔の長期間化等が図られてきているが、突発的に故障す
るケースが多発している。密封玉軸受は通常、ベアリン
グメーカにてグリースを封入した状態のものを購入し、
これをユーザーが定期的に点検、交換をしている。そし
て、突発的に故障したベアリングを調査するとグリース
中の基油が約７０％位に低下し、硬化していることが見
出され、これが原因で異常摩耗を起こし、故障を発生さ
せると確認された。したがって、油分離量が少なく、潤
滑性のよいグリースの開発が望まれる。2. Description of the Related Art Sealed ball bearings have been designed to have a long service life and a long regular inspection interval. However, there are many cases of sudden failure. Sealed ball bearings are usually purchased with grease from the bearing manufacturer,
Users regularly check and replace this. Inspection of the bearing that suddenly failed found that the base oil in the grease had dropped to about 70% and was hardened, and it was confirmed that this caused abnormal wear and caused a failure. Was. Therefore, development of a grease having a small oil separation amount and good lubricity is desired.
【０００３】長寿命のグリース組成物を提供することを
目的として、特開昭６３−１５８９６号公報では、増ち
ょう剤としてトリウレアを、基油として水添α−オレフ
ィンオリゴマー等を使用したグリース組成物が提案され
ている。また、特開平３−２８２９９号公報には高温下
で長寿命を有し、低騒音特性に優れたグリース組成物と
して、アルキルジフェニルエーテル油とジウレア化合物
からなるウレアグリース組成物が提案されている。しか
しながら、製鉄所等で使用される大型機械のベアリング
等に使用されるグリースにあってはより寿命の長いもの
が要求されている。For the purpose of providing a long-life grease composition, JP-A-63-15896 discloses a grease composition using triurea as a thickener and a hydrogenated α-olefin oligomer as a base oil. Has been proposed. Japanese Unexamined Patent Publication (Kokai) No. 3-28299 proposes a urea grease composition comprising an alkyl diphenyl ether oil and a diurea compound as a grease composition having a long life at high temperatures and excellent low noise characteristics. However, grease used for bearings of large machines used in steel works and the like is required to have a longer life.
【０００４】[0004]
【発明が解決しようとする課題】本発明は遠心油分離量
が少なく、潤滑性のよい、長寿命の密封ころがり軸受用
のグリース組成物を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a grease composition for hermetically sealed rolling bearings which has a small amount of centrifugal oil separation, has good lubricity, and has a long life.
【０００５】[0005]
【課題を解決するための手段】本発明は、トリメリット
酸エステル油及び／又はポリオールエステル油からなる
基油１００重量部に対し、増ちょう剤としてトリアジン
トリウレア５〜２０重量部配合してなり、高温軸受寿命
が長く、かつ常温下における優れた軸受振動特性を有す
ることを特徴とする軸受用グリース組成物である。According to the present invention, 5 to 20 parts by weight of triazine triurea is added as a thickener to 100 parts by weight of a base oil comprising trimellitic acid ester oil and / or polyol ester oil. , High temperature bearing life
Has long bearing characteristics and excellent bearing vibration characteristics at room temperature
A bearing grease composition characterized by that.
【０００６】本発明において基油として使用するトリメ
リット酸エステル油は、トリメリット酸のトリアルキル
エステルであり、アルキルとしては炭素数４〜１８、好
ましくは８〜１４のアルキルである。具体的には、ブチ
ル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル
基、ノニル基、デシル基、ウンデシル基、ドデシル基、
トリデシル基、テトラデシル基、ペンタデシル基、ヘキ
サデシル基、ヘプタデシル基、オクタデシル基等が挙げ
られ、これらのアルキル基は直鎖でも、分岐鎖でもよ
く、またエステルにおいて３つとも同一であっても、異
なってもよい。The trimellitic acid ester oil used as a base oil in the present invention is a trialkyl ester of trimellitic acid, and the alkyl is an alkyl having 4 to 18 carbon atoms, preferably 8 to 14 carbon atoms. Specifically, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group,
Tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group and the like. These alkyl groups may be linear or branched, and even if all three are the same in the ester, they may be different. Is also good.
【０００７】本発明において基油として使用するポリオ
ールエステル油は、多価アルコール、例えばネオペンチ
ルグリコール、トリメチロールプロパン、ペンタエリス
リトール等と、炭素数５〜１８の直鎖又は分岐脂肪酸と
をエステル化した構造を有するものである。The polyol ester oil used as a base oil in the present invention is obtained by esterifying a polyhydric alcohol, for example, neopentyl glycol, trimethylolpropane, pentaerythritol, etc., with a linear or branched fatty acid having 5 to 18 carbon atoms. It has a structure.
【０００８】本発明において使用する基油は、トリメリ
ット酸エステル油又ポリオールエステル油単独又はこれ
らの混合物からなるものである。なお、必要によりポリ
αオレフィン水素化物油等を基油に混合することもでき
る。[0008] The base oil used in the present invention comprises trimellitic acid ester oil or polyol ester oil alone or a mixture thereof. If necessary, a poly-α-olefin hydride oil or the like can be mixed with the base oil.
【０００９】本発明で増ちょう剤として使用するトリア
ジントリウレアは、好ましくは、下記の一般式化１で表
される化合物である。The triazine triurea used as a thickener in the present invention is preferably a compound represented by the following general formula 1.
【００１０】[0010]
【化１】Ｒ1 −ＮＨＣＯＮＨ−Ｒ2 −ＮＨＣＯＮＨ−Ｒ
3 −ＮＨＣＯＮＨ−Ｒ4 （式中、Ｒ1 は炭素数１２〜２
４のアルキル基、Ｒ2 は２価のトリアジン誘導体基であ
り、Ｒ3 は炭素数６〜１５の２価の芳香族炭化水素基、
Ｒ4 はアルキル基又はアリール基を示す。）Embedded image R 1 —NHCONH—R 2 —NHCONH—R
3- NHCONH-R 4 (wherein, R 1 is a group having 12 to 2 carbon atoms.
An alkyl group of 4, R 2 is a divalent triazine derivative group, R 3 is a divalent aromatic hydrocarbon group having 6 to 15 carbon atoms,
R 4 represents an alkyl group or an aryl group. )
【００１１】トリアジン誘導体基としてはトリアジン環
の1 つの炭素にアルキル基、フェニル基、アミノ基、ア
ルキルアミノ基又はアミド基が置換したものなどが挙げ
られる。Examples of the triazine derivative group include those in which one carbon of the triazine ring is substituted with an alkyl group, a phenyl group, an amino group, an alkylamino group or an amide group.
【００１２】このトリアジントリウレアの製造方法等
は、前記特開昭６３−１５８９６号公報などに記載され
ている方法を採用することができる。As a method for producing this triazine triurea, the method described in the above-mentioned JP-A-63-15896 can be employed.
【００１３】[0013]
【００１４】[0014]
【００１５】[0015]
【００１６】基油及び増ちょう剤の配合割合は、基油９
５〜７５重量％、増ちょう剤５〜２５重量％の範囲とす
ることがよく、ＮＬＧＩちょう度がＮｏ．１〜Ｎｏ．３
の範囲になるようにすることがよい。増ちょう剤が５重
量部以下では、増ちょう効果が少なく、２５重量部を越
えるとグリースが固くなり過ぎる。The mixing ratio of the base oil and the thickener is 9 base oil.
The NLGI consistency is preferably in the range of 5 to 75% by weight and the thickener of 5 to 25% by weight. 1 to No. 3
It is better to be within the range. If the thickener is 5 parts by weight or less, the thickening effect is small, and if it exceeds 25 parts by weight, the grease becomes too hard.
【００１７】本発明の密封ころがり軸受用グリース組成
物には、通常配合される増粘剤、酸化防止剤、防錆剤、
極圧剤、耐摩耗剤のような添加剤を配合することができ
る。また、本発明の密封ころがり軸受用グリース組成物
は、前記密封ころがり軸受等の他に、各種ベアリング、
その他の潤滑部へも適用できる。The grease composition for a sealed rolling bearing of the present invention contains a thickener, an antioxidant, a rust inhibitor,
Additives such as extreme pressure agents and antiwear agents can be blended. Further, the grease composition for a sealed rolling bearing of the present invention, in addition to the sealed rolling bearing and the like, various bearings,
It can be applied to other lubrication parts.
【００１８】[0018]
〔実施例１〜４〕表１に示す基油８６重量部、増ちょう
剤（２−オクタデシルウレイド−４，６−ジアミノ−
１，３，５−トリアジン、オクタデシルアミン、ｐ−ア
ニシジンとジフェニルメタン−４，４′−ジイソシアナ
ートとを反応させて得られるトリアジントリウレア）１
４重量部を配合してグリース組成物を製造した。このグ
リース組成物について、遠心離油度及び常温、高温軸受
寿命試験を行った。結果を表１に示す。なお、遠心離油
度は８８００Ｇ×５ｈｒ、４０℃にて測定した。この単
位は重量％である。また、軸受寿命試験はＡＳＴＭ Ｄ
１７４１のＢ法（回転数３５００／ｓｅｃ，荷重：ラジ
アル２５±５ｌｂ，スラスト４０±５ｌｂ，温度：常
温，１５０℃，使用軸受形式：密封形）により測定し
た。[Examples 1 to 4] 86 parts by weight of a base oil shown in Table 1, a thickener (2-octadecylureido-4,6-diamino-
Triazine triurea obtained by reacting 1,3,5-triazine, octadecylamine, p-anisidine with diphenylmethane-4,4'-diisocyanate) 1
4 parts by weight were mixed to produce a grease composition. This grease composition was subjected to centrifugal oil separation and normal and high temperature bearing life tests. Table 1 shows the results. The centrifugal oil separation was measured at 8800 G × 5 hr at 40 ° C. This unit is% by weight. ASTM D
It was measured by the B method of 1741 (rotation speed 3500 / sec, load: radial 25 ± 5 lb, thrust 40 ± 5 lb, temperature: normal temperature, 150 ° C., bearing type used: sealed type).
【００１９】[0019]
【００２０】[0020]
【００２１】〔比較例１〕基油を鉱油とした他は、実施
例１と同様にしてグリース組成物を製造し、同様な測定
を行った。Comparative Example 1 A grease composition was produced in the same manner as in Example 1 except that the base oil was mineral oil, and the same measurement was carried out.
【００２２】〔比較例２〕市販の鉱油＋１２−ヒドロキ
システアリン酸リチウム石鹸グリース組成物（ＮＬＧＩ
ちょう度グレードＮｏ．２）について、実施例１と同様
な測定を行った。Comparative Example 2 Commercially available mineral oil + lithium 12-hydroxystearate soap grease composition (NLGI
Consistency grade No. About 2), the same measurement as Example 1 was performed.
【００２３】〔比較例３〕市販のエステル油＋１２−ヒ
ドロキシステアリン酸リチウム石鹸グリース組成物（Ｎ
ＬＧＩちょう度グレードＮｏ．２）について、実施例１
と同様な測定を行った。Comparative Example 3 Commercially available ester oil + lithium 12-hydroxystearate soap grease composition (N
LGI consistency grade No. About 2), Example 1
The same measurement as described above was performed.
【００２４】〔比較例４〕基油をポリαオレフィンとし
た他は、実施例１と同様にしてグリース組成物を製造
し、同様な測定を行った。Comparative Example 4 A grease composition was produced in the same manner as in Example 1 except that the base oil was poly-α-olefin, and the same measurement was carried out.
【００２５】[0025]
【表１】 注）ＴＯＴはトリメリット酸トリオクチル、ＴＤＴはト
リメリット酸トリドデシル、ＰＯはポリα−オレフィ
ン、ＭＯは鉱油、Ｅはエステル油[Table 1] Note) TOT is trioctyl trimellitate, TDT is tridodecyl trimellitate, PO is poly-α-olefin, MO is mineral oil, E is ester oil
【００２６】表１から実施例１〜４と比較例１〜４を比
較すると、鉱油系グリース組成物よりエステル系グリー
ス組成物の方が長寿命であることが分かる。また、遠心
離油量が少ない方が高温寿命が長いことが分かる。しか
し、遠心離油量が少ないと常温下における振動特性が悪
くなることも分かる。考察の結果、遠心離油量が１．０
〜１．５重量％であることがよく、ポリオールエステル
とトリアジントリウレアの組み合わせが常温、高温特性
に優れていることが確認された。Table 1 shows that Examples 1 to 4 and Comparative Examples 1 to 4 show that the ester grease composition has a longer life than the mineral oil grease composition. Further, it can be seen that the shorter the centrifugal oil separation amount, the longer the high temperature life. However, it is also found that if the centrifugal oil separation amount is small, the vibration characteristics at room temperature deteriorate. As a result of consideration, the centrifugal oil separation amount was 1.0
It is preferably 1.5% by weight, and it was confirmed that the combination of the polyol ester and the triazine triurea was excellent in normal temperature and high temperature characteristics.
【００２７】[0027]
【発明の効果】本発明の密封軸受用グリース組成物は、
油分離量が少なく、潤滑性が優れるので、高温軸受寿命
時間が長い。また、常温下での振動特性もよいため、装
置の始動性も良好である。The grease composition for a sealed bearing of the present invention comprises:
Since the amount of oil separation is small and the lubricity is excellent, the high-temperature bearing life is long. Further, since the vibration characteristics at normal temperature are good, the startability of the device is also good.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ１０Ｎ 30:06 Ｃ１０Ｎ 30:06 40:02 40:02 50:10 50:10 (72)発明者 四阿 佳昭 愛知県東海市東海町５−３ 新日本製鐵 株式会社名古屋製鐵所内 (72)発明者 小野 聡 愛知県東海市東海町５−３ 新日本製鐵 株式会社名古屋製鐵所内 (72)発明者 竹本 雅謙 千葉県富津市新富20−１ 新日本製鐵株 式会社技術開発本部内 (72)発明者 小野山 益弘 愛知県名古屋市千種区向陽１−11−14 (72)発明者 加藤 和夫 東京都板橋区坂下１丁目34番22号 中央 油化株式会社内 (72)発明者 森 廣志 東京都板橋区坂下１丁目34番22号 中央 油化株式会社内 (58)調査した分野(Int.Cl.7，ＤＢ名) C10M 169/02 Continuation of the front page (51) Int.Cl. 7 Identification code FI C10N 30:06 C10N 30:06 40:02 40:02 50:10 50:10 (72) Inventor Yoshiaki Shia 5- Tokaicho, Tokai-shi, Aichi Prefecture 3 Nippon Steel Corporation Nagoya Works (72) Inventor Satoshi Ono 5-3 Tokai-cho, Tokai City, Aichi Prefecture Nippon Steel Corporation Nagoya Works (72) Inventor Masaken Takemoto Shintomi, Futtsu City, Chiba Prefecture 20-1 Nippon Steel Corporation Technology Development Division (72) Inventor Masuhiro Onoyama 1-111-14 Koyo, Chigusa-ku, Nagoya-shi, Aichi (72) Inventor Kazuo Kato 1-34-222 Sakashita, Itabashi-ku, Tokyo No. Chuo Yuka Co., Ltd. (72) Inventor Hiroshi Mori 1-34-22 Sakashita, Itabashi-ku, Tokyo Chuo Yuka Co., Ltd. (58) Fields investigated (Int. Cl. 7 , DB name) C10M 169 / 02
Claims (1)
オールエステル油からなる基油１００重量部に対し、増
ちょう剤としてトリアジントリウレア５〜２０重量部配
合してなり、高温軸受寿命が長く、かつ常温下における
優れた軸受振動特性を有することを特徴とする軸受用グ
リース組成物。1. A blend of 5-20 parts by weight of triazine triurea as a thickener with respect to 100 parts by weight of a base oil composed of trimellitic acid ester oil and / or polyol ester oil to provide a long-term high-temperature bearing life and At room temperature
A grease composition for bearings having excellent bearing vibration characteristics .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27908193A JP3290010B2 (en) | 1993-10-12 | 1993-10-12 | Grease composition for sealed rolling bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27908193A JP3290010B2 (en) | 1993-10-12 | 1993-10-12 | Grease composition for sealed rolling bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07109480A JPH07109480A (en) | 1995-04-25 |
| JP3290010B2 true JP3290010B2 (en) | 2002-06-10 |
Family
ID=17606154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27908193A Expired - Lifetime JP3290010B2 (en) | 1993-10-12 | 1993-10-12 | Grease composition for sealed rolling bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3290010B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4515775B2 (en) * | 2003-04-30 | 2010-08-04 | Ｎｔｎ株式会社 | Low-temperature lubrication grease and rolling bearings |
| JP2014031458A (en) * | 2012-08-06 | 2014-02-20 | Nsk Ltd | Lubricant composition and bearing unit for a hard disc drive swing arm |
-
1993
- 1993-10-12 JP JP27908193A patent/JP3290010B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07109480A (en) | 1995-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3337593B2 (en) | Grease composition for rolling bearings | |
| EP0386653B1 (en) | Grease composition | |
| US5059336A (en) | Grease composition for high speed anti-friction bearing | |
| US5512188A (en) | Grease composition for constant velocity joint comprising boron nitride powder and zinc dithiophosphate | |
| US5462684A (en) | Grease composition containing alkyl diphenyl ether oil and diurea thickener | |
| US5707944A (en) | Grease composition | |
| US6020290A (en) | Grease composition for rolling bearing | |
| US5840666A (en) | Grease composition | |
| JP3370829B2 (en) | Lubricating grease composition | |
| US20020013232A1 (en) | Grease composition | |
| JP3512183B2 (en) | Grease for high-temperature, high-speed, high-load rolling bearings and grease-filled rolling bearing for high-temperature, high-speed, high-load rolling | |
| JPH11269478A (en) | Grease composition for rolling bearing | |
| US20020107150A1 (en) | Lubricant composition and bearing | |
| US20030027731A1 (en) | Heat-resistant, high-speed, high-load rolling bearing and grease composition | |
| US6265362B1 (en) | Lubricating grease composition | |
| JP3464063B2 (en) | Grease composition for enclosing rolling bearings | |
| US6500788B2 (en) | Lubricating grease composition | |
| JPH10273690A (en) | Grease composition for rolling bearing | |
| HU211182B (en) | Lubricant composition | |
| JP3290010B2 (en) | Grease composition for sealed rolling bearings | |
| JP2005298629A (en) | Grease composition for automobile electrical auxiliary and rolling bearing filled with the grease composition | |
| JP2003306687A (en) | Biodegradable grease composition | |
| JP2912713B2 (en) | High temperature durable grease composition | |
| JPH05140576A (en) | Grease composition for bearing encapsulation | |
| Venkataramani et al. | High temperature greases based on polyurea gellants: A review |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20011009 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020212 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090322 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100322 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110322 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110322 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120322 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120322 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130322 Year of fee payment: 11 |