201011102 六、發明說明 【發明所屬之技術領域】 本發明係關於一種支撐工作機械主軸（Spindle )等之 高速旋轉軸的滾動軸承所使用之高速軸承用潤滑脂。 【先前技術】 工作機械之主軸係爲了提高加工能率宜以高速進行旋 # 轉，於其軸承適用各種之潤滑技術。適用於進行高速旋轉 之主軸的潤滑方法，已知例如油霧潤滑、油氣潤滑、噴射 潤滑等之方法。但，如此之潤滑方法係必須有壓縮空氣或 給油裝置等之附帶設備，爲提昇工作機械之初始成本及營 運成本的原因之一。對於此等而潤滑脂潤滑係可謂維護必 須之至少較佳的潤滑方法。例如，支撐以2000~8000 rpm 或其以上之高速進行旋轉的旋轉軸之高速滾動軸承可舉例 如支撐工作機械主軸（Spindle)等之角接觸軸承或圓筒滾 • 珠軸承等。 如圖2所示般，角接觸軸承11係除了徑向荷重外， 可負荷來自一方向之軸向荷重者，連結鋼球14與內軸12 及外輪13之接觸點的直線對於徑向方向具有角度（接觸 角）α。於以內軸12及外輪13與鋼球14所形成之軸承 空間封入潤滑脂。如此之角接觸軸承、或圓筒滚珠軸承等 所構成之高速滾動軸承所使用之潤滑劑係不需給油等之維 護，宜採用不污染周圍環境之稠度所調整的潤滑脂。 以下，歸納工作機械主軸（Spindle)用滾動軸承等之 201011102 高速軸承用潤滑脂所要求的潤滑特性與問題點而表示之。 (a)爲有效地延長長壽命性滾動軸承之潤滑壽命， 如說明於以下之（i ) ~ ( iii )，必須有：從滾動軸承潤滑 劑（潤滑脂或其基油）很難洩漏、潤滑脂之耐熱性優異、 可形成潤滑必須之油膜厚度。 (i) 使滾動軸承進行高速運轉時，藉離心力而滾動 軸承內之潤滑脂或潤滑脂流出於軸承外部，或，潤滑脂中 之基油分離流出，而很難滯留於對潤滑很大助益之滾動面 @ 附近，易成爲潤滑不良。爲防止如此之事態，成爲使遮蔽 板等之密封構件裝載於滾動軸承之對策，但，藉軸承之構 造有時無法裝載，又，即使裝載密封構件，亦有時無法完 全密封潤滑劑或潤滑油。 未被高速運轉之滾動軸承時，認爲藉轉動體或保持器 之運動從摩擦部分被押出之多餘的潤滑脂，係藉旋轉條件 使軸承內部進行某種程度回流而可再助於潤滑。但，以高 速進行旋轉之工作機械等的旋轉軸支撐用滾動軸承，因軸 〇 承內部產生之風壓會妨礙此回流，易引起潤滑不良。因此 以高速進行旋轉之滾動軸承，係只微量之潤滑脂有助於潤 滑，而潤滑脂之性狀成爲特別重要。又’高速軸承用潤滑 脂係即使少量之潤滑脂，亦必須維持潤滑性能。 (ii) 若運轉條件進行高速化，軸承之滾動面係局部 地發熱而成爲高溫度，此時，缺乏耐熱性之潤滑脂會熱劣 化，潤滑脂之壽命明顯縮短。對於如此之問題’嘗試使用 具耐熱性之增稠劑或基油，或添加抗氧化劑。但’此等之 -6- 201011102 嘗試係尙未達耐久性之充分提昇。 (Hi )提高潤滑性（油膜厚度）之習知潤滑脂，係若 提高基油黏度，剪切摩擦阻抗會上昇而旋轉扭力增加，發 熱量增大，故爲抑制此等，抑制基油黏度至很低。因此， 有時隨高速之溫度上昇，成爲低黏度之潤滑油的油膜變薄 而引起滑動磨耗。 (b )有關低扭力性（昇度上昇之抑制性）而已存在 # 之高速軸承用潤滑脂，係如前述般抑制基油黏度至很低， 但若軸承以高速度旋轉，有如下之問題：受溫度上昇，黏 度明顯降低，無法形成潤滑所需之厚度的油膜。 (c )有關低振動性，係有時依潤滑脂之增稠劑的種 類而增大軸承之振動。亦即，在含有形成大且硬之凝集體 的增稠劑之潤滑脂中係進行潤滑之滾動軸承的振動變大。 如此地，習知之潤滑脂係有如下之問題點：使用於高 速滾動軸承時無法滿足所謂軸承之長壽命性、低扭力性及 ^ 低振動性之所需物性。就對策而言，已提出調配有脲化合 物之潤滑脂（參照專利文獻1〜專利文獻3 )，爲得到更高 速性能，係不充分。 例如，於專利文獻3中已揭示一種潤滑脂組成物，其 係含有在40°C中之動態黏度爲15mm2/sec以上40mm2/Sec 以下之基油、與含量爲潤滑脂組成物全體之9質量％以上 14質量％以下之二脲化合物的增稠劑，混合稠度爲220以 上3 20以下。但，即使在上述潤滑脂組成物中，要減少潤 滑脂封入量乃很難，無法充分應付軸承之高速旋轉，而很 201011102 難進行工作機械的小型化或運轉經費的刪減。 又，近年漸漸滾動軸承之使用狀態變嚴苛’以所謂節 距圓徑 dm ( mm )與旋轉數N ( rpm )之積的dmN値爲 170萬以上之高速旋轉所使用的工作機械主軸（Spindle) 用滾動軸承等亦變多。伴隨如此之軸承的旋轉速度之高速 化，以已知之潤滑脂很難全部滿足軸承所要求之性能。 先前技術文獻 專利文獻 © 專利文獻 1 :特開2000- 1 69872號公報 專利文獻 2:特開2003-83341號公報 專利文獻 3 :特開2006-29473號公報 【發明內容】 發明之槪要 發明欲解決之課題 本發明係對應於如此之問題所形成者，目的在於提供 G 一種高速軸承用潤滑脂，其係即使爲很少之潤滑脂封入量 ，可充分對應於例如節距圓徑dm ( mm )與旋轉數N ( rpm)之積的dmN値爲170萬以上之高速旋轉，而可進行 工作機械的小型化或運轉經費的刪減。 用以解決課題之手段 本發明之高速軸承用潤滑脂，其係於以脲系化合物作 爲增稠劑之脲潤滑脂中，調配於分子內具有醯胺鍵之複合 -8 - 201011102 醯胺鋰皂作爲增稠劑之非脲潤滑脂而成的高速軸承用潤滑 脂，其特徵在於： 上述脲系化合物係使聚異氰酸酯成分與單胺成分反應 而得到，上述單胺成分爲相對於單胺全體含有脂肪族單胺 46莫耳％以上之單胺成分。 上述非脲潤滑脂係對於上述潤滑脂全體之調配比率爲 1 0重量％~80重量％。 • 上述複合醯胺鋰皂係對於上述非脲潤滑脂全體之調配 比率爲3重量％~40重量％。 使用於上述脲潤滑脂及上述非脲潤滑脂之基油係在40 °C之動態黏度爲l〇mm2/sec〜40mm2/sec。 使用於上述脲潤滑脂及上述非脲潤滑脂之基油係選自 合成烴油、酯油及烷基二苯醚油之至少一種的油。 上述高速軸承用潤滑脂係添加至少一種選自有機鉬化 合物及有機鋅化合物作爲添加劑。 上述聚異氰酸酯成分爲芳香族二異氰酸酯。尤其上述 芳香族二異氰酸酯爲4,4’-二苯基甲烷二異氰酸酯。 上述脂肪族單胺爲辛基胺。 上述於分子內具有醯胺鍵之複合醯胺鋰皂爲N烷基取 代單醯胺酸之鋰鹽。尤其上述N烷基取代單醯胺酸之鋰鹽 爲下述式（1 )表示者。 [化1] Η 〇[Technical Field] The present invention relates to a high-speed bearing grease used for a rolling bearing that supports a high-speed rotating shaft such as a spindle of a working machine. [Prior Art] The main shaft of the working machine is to be rotated at a high speed in order to improve the processing energy rate, and various lubrication techniques are applied to the bearings. A method of lubricating a spindle that is suitable for high-speed rotation is known, for example, oil mist lubrication, oil-air lubrication, spray lubrication, and the like. However, such a lubrication method requires one of the accompanying equipment such as compressed air or an oil supply device, which is one of the reasons for increasing the initial cost and operating cost of the working machine. For such grease lubrication systems, at least the preferred lubrication method must be maintained. For example, a high-speed rolling bearing that supports a rotating shaft that rotates at a high speed of 2000 to 8000 rpm or higher can be, for example, an angular contact bearing or a cylindrical roller bearing that supports a working machine spindle or the like. As shown in Fig. 2, the angular contact bearing 11 is capable of supporting an axial load from one direction in addition to the radial load, and the straight line connecting the contact points of the steel ball 14 with the inner shaft 12 and the outer wheel 13 has a radial direction. Angle (contact angle) α. The grease is sealed in the bearing space formed by the inner shaft 12 and the outer wheel 13 and the steel ball 14. The lubricant used in the high-speed rolling bearing formed by such an angular contact bearing or a cylindrical ball bearing does not need to be maintained by oil, and the grease adjusted by the consistency of the surrounding environment should be used. In the following, the lubrication characteristics and problems required for the 201011102 high-speed bearing grease such as the rolling bearing for the working machine spindle are summarized. (a) In order to effectively extend the lubrication life of long-life rolling bearings, as explained in (i) ~ (iii) below, it is necessary to: from the rolling bearing lubricant (grease or its base oil) is difficult to leak, grease It has excellent heat resistance and can form the oil film thickness necessary for lubrication. (i) When the rolling bearing is operated at a high speed, the grease or grease in the rolling bearing flows out of the bearing by centrifugal force, or the base oil in the grease separates and flows out, and it is difficult to stay in the rolling surface which greatly contributes to lubrication. @ Nearby, easy to become poor lubrication. In order to prevent such a situation, the sealing member such as a shield plate is placed on the rolling bearing. However, the bearing may not be mounted by the structure of the bearing, and the lubricant or the lubricating oil may not be completely sealed even if the sealing member is mounted. In the case of a rolling bearing that is not operated at a high speed, it is considered that the excess grease that is pushed out from the friction portion by the movement of the rotating body or the retainer can be recirculated by the rotation condition to recirculate the inside of the bearing to a certain extent. However, in a rolling bearing for supporting a rotating shaft such as a working machine that rotates at a high speed, the wind pressure generated inside the shaft bearing may hinder the backflow and may cause poor lubrication. Therefore, rolling bearings that rotate at high speed are only a small amount of grease that helps to lubricate, and the properties of the grease are particularly important. Also, high-speed bearing greases must maintain lubricating properties even with a small amount of grease. (ii) When the operating conditions are increased, the rolling surface of the bearing is locally heated to a high temperature. In this case, the grease lacking heat resistance is thermally deteriorated, and the life of the grease is significantly shortened. For such problems, try using a heat-resistant thickener or base oil, or add an antioxidant. However, -6-201011102 attempts to improve the durability of the system. (Hi) A conventional grease that improves the lubricity (oil film thickness). If the viscosity of the base oil is increased, the shear frictional resistance increases, the rotational torque increases, and the amount of heat increases. Therefore, the viscosity of the base oil is suppressed. Very low. Therefore, the temperature of the high-speed lubricating oil may increase, and the oil film of the low-viscosity lubricating oil may become thin and cause sliding wear. (b) For high-speed bearing greases with low torque (inhibition of rise in lift), the viscosity of the base oil is suppressed to a very low level as described above, but if the bearing is rotated at a high speed, the following problems occur: When the temperature rises, the viscosity is remarkably lowered, and the oil film of the thickness required for lubrication cannot be formed. (c) Regarding low vibration, the vibration of the bearing is sometimes increased depending on the type of thickener of the grease. That is, the vibration of the rolling bearing which is lubricated in the grease containing the thickener which forms a large and hard aggregate becomes large. As described above, the conventional grease has the following problems: when used in a high speed rolling bearing, the required physical properties such as long life, low torque, and low vibration of the bearing cannot be satisfied. In the case of the countermeasures, it has been proposed to provide a urea compound (refer to Patent Document 1 to Patent Document 3), and it is not sufficient to obtain higher speed performance. For example, Patent Document 3 discloses a grease composition containing a base oil having a dynamic viscosity of 40 mm 2 /sec or more and 40 mm 2 /sec or less at 40 ° C, and a mass of 9 parts by mass of the grease composition. A thickener of a diurea compound having a % by weight or more and 14% by mass or less has a mixed consistency of 220 or more and 3 20 or less. However, even in the above grease composition, it is difficult to reduce the amount of grease sealing, and it is not possible to sufficiently cope with the high-speed rotation of the bearing, and it is difficult to reduce the size of the working machine or the operation cost. In addition, in recent years, the use condition of the rolling bearing has become severe. The working machine spindle (Spindle) used for the high-speed rotation of the product of the so-called pitch diameter dm (mm) and the number of revolutions N (rpm) is 1.7 million or more. There are also many rolling bearings and the like. With the speed of rotation of such bearings, it is difficult to fully satisfy the required performance of the bearing with known greases. CITATION LIST Patent Literature PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT Problem to be Solved The present invention has been made in response to such a problem, and an object thereof is to provide a high-speed bearing grease which can sufficiently correspond to, for example, a pitch diameter dm (mm) even with a small amount of grease sealing. The dmN値 of the product of the number of rotations N (rpm) is 1.7 million or more, and the work machine can be miniaturized or the operation cost can be reduced. Means for Solving the Problem The grease for a high-speed bearing of the present invention is formulated in a urea grease having a urea compound as a thickener, and is compounded in a compound having a guanamine bond in the molecule -8 - 201011102 lithium amide lithium soap A grease for a high-speed bearing comprising a non-urea grease as a thickener, wherein the urea-based compound is obtained by reacting a polyisocyanate component with a monoamine component, and the monoamine component is contained in a total amount of the monoamine. Aliphatic monoamine 46% or more of monoamine component. The non-urea grease is formulated in an amount of from 10% by weight to 80% by weight based on the total amount of the above grease. • The ratio of the above composite lithium alginate soap to the above non-urea grease is from 3% by weight to 40% by weight. The base oil used in the above urea grease and the above non-urea grease has a dynamic viscosity at 40 ° C of from 10 mm 2 /sec to 40 mm 2 /sec. The base oil used in the above urea grease and the above non-urea grease is selected from the group consisting of an oil of at least one of a synthetic hydrocarbon oil, an ester oil, and an alkyl diphenyl ether oil. The high-speed bearing grease is added with at least one selected from the group consisting of an organic molybdenum compound and an organozinc compound as an additive. The polyisocyanate component is an aromatic diisocyanate. In particular, the above aromatic diisocyanate is 4,4'-diphenylmethane diisocyanate. The above aliphatic monoamine is octylamine. The above lithium limonide soap having a guanamine bond in the molecule is a lithium salt of an N-alkyl substituted monoamine. In particular, the lithium salt of the above N alkyl-substituted mono-proline is represented by the following formula (1). [化1] Η 〇
I II CHj(CH2)17 N、-C — (CH2>8/C\〇 —Li ⑴ 201011102 發明之效果 本發明之高速軸承用潤滑脂，係於以特定之脲系化合 物作爲增稠劑之脲潤滑脂中，調配於分子內具有醯胺鍵之 複合醯胺鋰皂作爲增稠劑之非脲潤滑脂而成者，故即使爲 少量之潤滑脂封入量，可保持封入此潤滑脂之滾動軸承的 耐荷重性，同時並於高速旋轉下油對軌道面之供給能力優 異。 © 構成脲系化合物之單胺成分爲相對於單胺全體含有脂 肪族單胺46莫耳％以上，故對於高速下之剪切力，增稠劑 不容易被破壞，而藉由增稠劑纖維的毛細管現象，可於運 轉面安定地供給潤滑脂中之油分。 用以實施發明之形態 就封入本發明之高速軸承用潤滑脂的高速軸承之一例 而言，可例示於圖1所示之角接觸軸承。圖1係表示已封 G 入本發明之高速軸承用潤滑脂的角接觸軸承之縱截面圖。 此角接觸軸承1係如圖1所示般，於內輪2與外輪3 之間以保持器5保持轉動體4之軸承空間，以固定於設在 外輪3之內周面的卡止溝之密封構件6進行密封的軸承。 本發明之高速軸承用潤滑脂8係在以內輪2、外輪3與轉 轉體4所形成之軸承空間內，至少封入於轉動體4之周圍 。角接觸軸承1中係於外輪3之內徑面形成周溝狀之潤滑 脂口袋7，物理性防止潤滑脂之洩漏。連結轉動體4、內 -10- 201011102 輪2及外輪3之接觸點的直線相對於徑向方向而具有接觸 角，可負荷徑向荷重與一方向之軸向荷重。又，轉動體 4係亦可爲氮化矽或碳化矽等之陶瓷製。 本發明之高速軸承用潤滑脂係封入於軸承時，宜封入 軸承空隙部之容積的1體積％以上、未達10體積％之量。 若未達1體積％，潤滑所需之潤滑脂量會不足而枯竭，耐 久性差。若爲10體積％以上，因攪拌所產生之扭力增加造 Φ 成的發熱，耐久性不會提高，且，與成本增加有關，環境 上亦不佳。 可封入本發明之高速軸承用潤滑脂的高速軸承係除圖 1所示之角接觸軸承外，可舉例如深溝滾珠軸承、圓筒滾 珠軸承、圓錐滾珠軸承、自動調心滾珠軸承、針狀滾珠軸 承、推力圓筒滾珠軸承、推力圓錐滾珠軸承、推力針狀滾 珠軸承、推力自動調心滾珠軸承等。 在本發明中，可使用於脲潤滑脂及非脲潤滑脂之基油 β ，宜使用在40°c中之動態黏度（以下，僅計爲動態黏度） 爲10~40mm2/sec的潤滑油。尤其，更宜動態黏度爲 1 8~3 0mm2/sec的潤滑油。動態黏度不足10mm2/sec，黏度 太低而無法得到充分的耐荷重性。又，動態黏度超過 40mm2/sec時，伴隨高速旋轉而油於軌道面的供給會不足 ，早期到達軸承壽命。 上述脲潤滑脂及非脲潤滑脂之基油的種類係可舉例如 合成烴油、酯油、烷基二苯醚油、礦油' GTL油等。此等 之基油係可單獨或組合2種類以上而使用。此等之中宜使 -11 - 201011102 用合成烴油、酯油、烷基二苯醚油等。 又，宜合成烴油、酯油、烷基二苯醚油各別之動態黏 度爲10〜40mm2/sec。若爲此範圍，即使爲形成混合油時， 可使動態黏度的範圍爲上述之10〜40mm2/sec。形成混合油 時，宜使合成烴油爲必須成分，又，合成烴油宜爲較酯油 或烷基二苯醚油就重量比率爲同量以上。 合成烴油可舉例如正石蠟、異石蠟、聚丁烯、聚異丁 烯、1-癸烯寡聚物、卜癸烯與乙烯共寡聚物等之聚-α-烯 0 烴等。 酯油可舉例如二丁基癸二酸酯、二-2-乙基己基癸二酸 酯、二辛基己二酸酯、二異癸基己二酸酯、雙十三碳基己 二酸酯、雙十三碳基酞酸酯、甲基/乙醯基蓖麻油酸酯等 之二酯油、三辛基偏苯三甲酸酯、十三碳基偏苯三甲酸、 四辛基均苯四甲酸等之芳香族酯油、三羥甲基丙烷己酸酯 、三羥甲基丙烷壬酸酯、季戊四醇-2-乙基己酸酯、季戊四 醇壬酸酯等之多元醇酯油、碳酸酯油等。 · 烷基二苯醚油可舉例如單烷基二苯醚、二烷基二苯醚 、聚烷基二苯醚等。 礦油係可使用從原油所得到之潤滑油進行減壓蒸餾、 油劑裂解、溶劑萃取、氫化分解、溶劑脫蠟、硫酸洗淨、 白土精製、氫化精製等之精製者。 在本發明中之脲潤滑脂係於上述基油調配脲系化合物 作爲增稠劑而成之潤滑脂。可使用於本發明之脲系化合物 (脲系增稠劑）係使聚異氰酸酯成分與單胺成分反應所得 -12- 201011102 到。 上述聚異氰酸酯成分可舉例如苯撐基二異氰酸酯、巾 苯撐基二異氰酸酯、二苯基二異氰酸酯、二苯基甲烷二異 氰酸酯、十八碳烷二異氰酸酯、癸烷二異氰酸酯、己院二 異氰酸酯等。此等之中，亦宜爲芳香族二異氰酸酯。又， 可使用二胺與相對於該二胺就莫耳比與過剩的二異氰酸酯 之反應所得到的聚異氰酸酯。二胺可舉例如乙二胺、丙二 ® 胺、丁二胺、己二胺、辛二胺、苯二胺、甲苯二胺、二甲 苯二胺、二胺基二苯基甲烷等。 上述單胺成分係相對於單胺全體含有脂肪族單胺46 莫耳％以上，較佳係80莫耳％以上之單胺成分。藉由含有 46莫耳％以上，增稠劑之剪切安定性強，在高速下亦不易 被破壞，而藉增稠劑之毛細管現象，可供給潤滑脂中之基 油至運轉部。構成上述單胺成分之脂肪族單胺以外的單胺 可舉例如脂環式單胺、芳香族單胺。 ® 脂肪族單胺可舉例如己胺、辛胺、十二碳基胺、十六 碳基胺、十八碳基胺、硬酯基胺、油基胺，此等之中亦宜 爲辛胺。脂環式單胺可舉例如環己胺等。芳香族單胺可舉 例如苯胺、對甲苯胺，此等之中，宜使用苯胺。 在本發明中，脲系增稠劑係相對於脲潤滑脂全體宜以 3~20重量％之比率調配。尤其宜爲5〜16重量％之調配量。 調配量不足3重量％時，基油保持能力不充分’尤其’旋 轉初期一時地大量之油分會分離而引起潤滑脂之洩漏’軸 承耐久壽命變短。又，若調配量超過2〇重量％，相對地基 -13- 201011102 油之量變少，油供給性不充分，早期地陷於潤滑不足而同 樣地軸承耐久受命變短。 本發明中之非脲潤滑脂係不含有脲系化合物，而爲於 上述基油中調配複合醯胺鋰皂作爲增稠劑而成之金屬複合 皂系的潤滑脂。 使用於本發明中之複合醯胺鋰皂係由脂肪族二羧酸、 月曰肪族單胺、氨氧化鍾等所合成’尤其於分子內具有酿胺 鍵者。複合醯胺鋰皂作爲增稠劑之非脲潤滑脂的市售品， · 可舉例如協同油脂公司製：Palmax RGB。 在本發明中複合醯胺鋰皂係宜相對於非脲潤滑脂全體 以3〜40重量％的比率進行調配。調配量未達3重量％時， 潤滑脂爲軟質受剪切容易從軸承洩漏。又，若調配量超過 4 0重量％，潤滑脂中之油分少，恐油供給性變差。 在本發明之高速軸承用潤滑脂中非脲潤滑脂係宜相對 於潤滑脂全體以1〇~80重量％的比率進行調配。尤宜爲 20-50重量％之調配量。就非脲潤滑脂而言，調配量未達 ® 10重量％時，於運轉部之油供給性差。又，若調配量超過 80重量％，在高速下增稠劑之纖維易被破壞，藉增稠劑之 毛細管現象無法使基油供給至運轉部。 又，於本發明中脲潤滑脂與非脲潤滑脂之混合潤滑脂 係依需要而可含有公知之潤滑脂用添加劑。此添加劑可舉 例如有機鋅化合物、胺系、酚系化合物等之抗氧化劑、苯 並三唑等之金屬惰性劑、聚甲基丙烯酸酯、聚苯乙烯等之 黏度指數提昇劑、二硫化鉬、石墨等之固體潤滑劑、金屬 -14- 201011102 磺酸酯、多元醇酯等之抗銹劑、有機鉬化合物等之摩 低劑、酯、醇等之油性劑、磷系化合物等之抗磨耗劑 此等係可單獨或組合2種類以上而添加。 此等之添加劑中，有機鋅化合物與有機鉬化合物 壓性優異，以油對運轉面之供給不足之狀態，亦可防 結，很有效。 此等之添加劑的含量係個別地宜爲潤滑脂全量之 重量％以上，就合計量宜爲潤滑脂全量的0.15-10重 之範圍。尤其，就合計量超過10重量％時，不僅無法 符合含量增加之效果，而且相對地其他成分的含量變 又，在潤滑脂中此等添加劑會凝集，亦有時招致扭力 等之不佳的現象。 【實施方式】 實施例 以下，舉例實施例而更進一步說明本發明，但本 係不受此任何限定。 <脲潤滑脂之調製> 脲潤滑脂U1〜U7 於表1所示之基油的半量中，以表1所示之比率 4，4 ’ -二苯基甲院二異氰酸醋（日本p 〇 1 y u r e t h a n e工 司製：Milionate MT、以下記爲MDI )，於其餘之半 基油中溶解成爲MDI之2倍當量的單胺。各別之調 擦降 等。 係極 止燒 0.05 量％ 期待 少， 上昇 發明 溶解 業公 量的 配比 -15- 201011102 率及種類係如表1所示。一邊攪拌已溶解MDI之溶液， 一邊加入已溶解有單胺之溶液後，以100°c〜120°c繼續30 分鐘而反應，於基油中生成二脲化合物，得到脲潤滑脂試 料。 <非脲潤滑脂之調製> 非脲潤滑脂NU1~NU4 於表1所示之基油中，得到一調配含有複合醯胺鋰皂 之混合物（N烷基取代單醯胺酸之鋰鹽（參照下述式 ))、與二元酸之鋰鹽、與N烷基取代二醯胺的混合物） 作爲增稠劑而成之非脲潤滑脂試料。各別之調配比率及種 類係如表1所示般。 [化2] Η CH3(CH2)17 •C — (CH2)8II ΟI II CHj(CH2)17 N, -C - (CH2>8/C\〇-Li (1) 201011102 Effect of the Invention The high-speed bearing grease of the present invention is a urea which uses a specific urea compound as a thickener In the grease, a compound of lithium amide with a guanamine bond in the molecule is used as a non-urea grease as a thickener, so even if a small amount of grease is enclosed, the rolling bearing sealed with the grease can be kept. The load resistance is excellent, and the oil is excellent in the supply of the orbital surface at high speed. © The monoamine component constituting the urea compound contains 46 mol% or more of the aliphatic monoamine relative to the entire monoamine, so it is high speed. The shearing force, the thickener is not easily broken, and the oil in the grease can be stably supplied to the running surface by the capillary phenomenon of the thickener fiber. The invention is applied to the high-speed bearing of the present invention. An example of the high-speed bearing of the grease can be exemplified as the angular contact bearing shown in Fig. 1. Fig. 1 is a longitudinal sectional view showing the angular contact bearing of the grease for high-speed bearing of the present invention. Bearing 1 As shown in FIG. 1, the bearing space of the rotating body 4 is held by the retainer 5 between the inner ring 2 and the outer ring 3, and is sealed by a sealing member 6 fixed to the locking groove provided on the inner circumferential surface of the outer ring 3. The high-speed bearing grease 8 of the present invention is sealed in at least the periphery of the rotor 4 in the bearing space formed by the inner wheel 2, the outer ring 3, and the rotating body 4. The angular contact bearing 1 is attached to the outer ring 3. The inner diameter surface forms a circumferential groove-shaped grease pocket 7 to physically prevent leakage of the grease. The straight line connecting the rotating body 4, the inner-10-10-11111, the contact point of the wheel 2 and the outer wheel 3 has a contact angle with respect to the radial direction. The radial load and the axial load in one direction can be loaded. Further, the rotating body 4 can also be made of ceramic such as tantalum nitride or tantalum carbide. When the grease for high-speed bearings of the present invention is sealed in a bearing, it should be sealed. 1% by volume or more of the volume of the bearing gap portion is less than 10% by volume. If it is less than 1% by volume, the amount of grease required for lubrication is insufficient and exhausted, and the durability is poor. If it is 10% by volume or more, stirring is performed. The generated torque increases the heat generated by the Φ, and is durable. In addition to the increase in cost, the environment is also poor. The high-speed bearing that can seal the grease for high-speed bearings of the present invention is, in addition to the angular contact bearing shown in Fig. 1, for example, a deep groove ball bearing, a circle Cylindrical ball bearing, tapered ball bearing, self-aligning ball bearing, needle ball bearing, thrust cylinder ball bearing, thrust tapered ball bearing, thrust needle ball bearing, thrust self-aligning ball bearing, etc. In the present invention, For the base oil β of urea grease and non-urea grease, it is advisable to use a dynamic viscosity (hereinafter, only dynamic viscosity) of 40 to 40 mm 2 /sec in 40 ° C. In particular, the dynamic viscosity is more suitable. It is a lubricating oil of 1 8~3 0mm2/sec. The dynamic viscosity is less than 10mm2/sec, and the viscosity is too low to obtain sufficient load resistance. Further, when the dynamic viscosity exceeds 40 mm 2 /sec, the supply of oil to the raceway surface is insufficient with high-speed rotation, and the bearing life is reached early. The type of the base oil of the urea grease and the non-urea grease may, for example, be a synthetic hydrocarbon oil, an ester oil, an alkyl diphenyl ether oil or a mineral oil 'GTL oil. These base oils can be used singly or in combination of two or more types. Among these, it is advisable to use synthetic hydrocarbon oil, ester oil, alkyl diphenyl ether oil, etc. for -11 - 201011102. Further, it is preferred to synthesize a hydrocarbon oil, an ester oil, and an alkyl diphenyl ether oil, each having a dynamic viscosity of 10 to 40 mm 2 /sec. If it is this range, even if it is a mixture oil, the dynamic viscosity can be made into the range of 10-40 mm2 / sec mentioned above. When the mixed oil is formed, it is preferred that the synthetic hydrocarbon oil is an essential component, and the synthetic hydrocarbon oil is preferably the same amount or more than the ester oil or the alkyl diphenyl ether oil. The synthetic hydrocarbon oil may, for example, be a poly-α-olefin 0 hydrocarbon such as a paraffin wax, an isoparaffin wax, a polybutene, a polyisobutylene or a 1-decene oligomer, or a terpene and an ethylene co-oligomer. The ester oil may, for example, be dibutyl sebacate, di-2-ethylhexyl sebacate, dioctyl adipate, diisodecyl adipate, ditridecyl adipic acid. Diester oil such as ester, bistridecyl phthalate, methyl/acetic ricinoleate, trioctyl trimellitate, tridecyl trimellitic acid, tetraoctylbenzene Polyol ester oils such as aromatic ester oils such as tetracarboxylic acid, trimethylolpropane hexanoate, trimethylolpropane decanoate, pentaerythritol-2-ethylhexanoate, pentaerythritol decanoate, and the like. Oil, etc. The alkyl diphenyl ether oil may, for example, be a monoalkyl diphenyl ether, a dialkyl diphenyl ether or a polyalkyl diphenyl ether. The mineral oil system can be purified by vacuum distillation, oil cracking, solvent extraction, hydrogenation decomposition, solvent dewaxing, sulfuric acid washing, white earth purification, and hydrorefining using a lubricating oil obtained from crude oil. The urea grease in the present invention is a grease obtained by formulating a urea compound as a thickener in the above base oil. The urea-based compound (urea thickener) to be used in the present invention can be obtained by reacting a polyisocyanate component with a monoamine component to -12-201011102. Examples of the polyisocyanate component include phenylene diisocyanate, phenylene diisocyanate, diphenyl diisocyanate, diphenylmethane diisocyanate, octadecane diisocyanate, decane diisocyanate, and hexamethylene diisocyanate. . Among these, aromatic diisocyanate is also preferred. Further, a polyisocyanate obtained by reacting a diamine with respect to the diamine in terms of a molar ratio and an excess of a diisocyanate can be used. The diamine may, for example, be ethylenediamine, propylenediamine, butanediamine, hexamethylenediamine, octanediamine, phenylenediamine, toluenediamine, xylylenediamine or diaminodiphenylmethane. The monoamine component contains a monoamine component of an aliphatic monoamine of 46 mol% or more, preferably 80 mol% or more, based on the entire monoamine. By containing more than 46 mol%, the thickener has strong shear stability and is not easily broken at high speed, and the base oil in the grease can be supplied to the running portion by capillary action of the thickener. The monoamine other than the aliphatic monoamine constituting the monoamine component may, for example, be an alicyclic monoamine or an aromatic monoamine. ® Aliphatic monoamines may, for example, be hexylamine, octylamine, dodecylamine, hexadecylamine, octadecylamine, stearylamine, oleylamine, among which octylamine is also preferred. . The alicyclic monoamine may, for example, be cyclohexylamine or the like. The aromatic monoamine may, for example, be aniline or p-toluidine, and among these, aniline is preferably used. In the present invention, the urea-based thickener is preferably formulated in a ratio of from 3 to 20% by weight based on the total of the urea grease. In particular, it is preferably a blending amount of 5 to 16% by weight. When the amount is less than 3% by weight, the base oil retaining ability is insufficient. In particular, a large amount of oil is separated at the beginning of the rotation, and the grease is leaked. The bearing durability life is shortened. In addition, when the blending amount exceeds 2% by weight, the amount of oil is less than that of the base -13 - 201011102, the oil supply property is insufficient, and the lubrication is insufficient in the early stage, and the bearing is shortened in the same manner. The non-urea grease in the present invention does not contain a urea-based compound, but is a metal-composite soap-based grease obtained by blending a lithium amide powder as a thickener in the base oil. The composite lithium alginate soap used in the present invention is synthesized from an aliphatic dicarboxylic acid, a ruthenium aliphatic monoamine, an ammonia oxidation clock or the like, especially in the case of having an amine bond in the molecule. A commercially available product of a non-urea grease which is a thickener of a composite lithium amide soap, and is, for example, a synergistic grease company: Palmax RGB. In the present invention, the composite lithium alginate soap is preferably formulated in a ratio of from 3 to 40% by weight based on the entire non-urea grease. When the blending amount is less than 3% by weight, the grease is soft and is easily sheared from the bearing. Further, when the blending amount exceeds 40% by weight, the amount of oil in the grease is small, and the fear oil supply property is deteriorated. In the grease for high-speed bearing of the present invention, the non-urea grease is preferably blended at a ratio of 1 Torr to 80% by weight based on the entire grease. It is especially preferred to be 20-50% by weight. In the case of non-urea grease, when the blending amount is less than 10% by weight, the oil supply property in the running portion is poor. Further, when the blending amount exceeds 80% by weight, the fiber of the thickener is liable to be broken at a high speed, and the capillary phenomenon of the thickener cannot supply the base oil to the running portion. Further, in the present invention, a mixed grease of a urea grease and a non-urea grease may contain a known additive for a grease as needed. Examples of the additive include an antioxidant such as an organic zinc compound, an amine system or a phenol compound, a metal inert agent such as benzotriazole, a viscosity index enhancer such as polymethacrylate or polystyrene, and molybdenum disulfide. A solid lubricant such as graphite, a metal rust inhibitor such as a sulfonate or a polyol ester, a lubricant such as an organic molybdenum compound, an oily agent such as an ester or an alcohol, or an anti-wear agent such as a phosphorus compound. These may be added alone or in combination of two or more types. Among these additives, the organozinc compound and the organic molybdenum compound are excellent in pressure property, and it is also effective in preventing the supply of the oil to the running surface. The content of these additives is preferably more than or equal to the weight of the total amount of the grease, and the total amount is preferably in the range of 0.15 to 10 parts by weight of the total amount of the grease. In particular, when the total amount exceeds 10% by weight, it is not only incapable of meeting the effect of increasing the content, but also the content of other components is changed, and such additives may agglomerate in the grease, and may sometimes cause poor torque or the like. . [Embodiment] Hereinafter, the present invention will be further described by way of examples, but it is not limited thereto. <Preparation of urea grease> Urea greases U1 to U7 In the half amount of the base oil shown in Table 1, the ratio of 4,4 '-diphenylmethine diisocyanate was shown in Table 1. Japanese p 〇1 yurethane system: Milionate MT, hereinafter referred to as MDI), dissolved in the remaining half of the base oil to become twice the equivalent of monoamine of MDI. Individual adjustments, etc. The base is burned at a low rate of 0.05%. The expectation is small, and the ratio of the dissolved industrial volume is increased. -15- 201011102 The rate and type are shown in Table 1. While stirring the solution in which the MDI was dissolved, the solution in which the monoamine was dissolved was added, and the reaction was continued at 100 ° C to 120 ° C for 30 minutes to form a diurea compound in the base oil to obtain a urea grease sample. <Preparation of non-urea grease> Non-urea grease NU1 to NU4 In the base oil shown in Table 1, a mixture containing a complex lithium amide lithium soap (N-alkyl substituted mono-proline acid lithium salt) was obtained. (Refer to the following formula)), a mixture of a lithium salt of a dibasic acid and a mixture of an N-alkyl-substituted diamine, and a non-urea grease sample as a thickener. The respective blending ratios and types are shown in Table 1. [Chemical 2] Η CH3(CH2)17 •C — (CH2)8II Ο
οII Ο—Li (1)οII Ο—Li (1)
-16- 201011102 〔表1〕 脲潤滑脂 脲潤滑脂 (複合醯胺鋰皂潤滑 脂） U1 U2 U3 U4 U5 U6 U7 NU1 NU2 NU3 NU4 潤滑脂調配(重量％) 基油 合成烴油υ 52 52 52 52 68 52 48 61 酯油2) 34 34 一 34 一 17 34 — 28 一 15 烷基二苯醚油3) 一 一 34 一 一 — — 76 —— 一 一 礦油4) — 一 一 一 86 一 — — — 76 .__ 40°C中之動態黏度 (mm1 2 3/sec) 21 21 22 21 31 23 21 15 22 31 23 脲系_劑 胺:辛胺 7.1 4.0 7.1 3.6 7.1 7.6 2.6 胺:苯胺 一 2.6 —— 3.0 — — 3.8 — 一 —— 一 二異氰酸酯:MDI4 5) 6.9 7.4 6.9 7.4 6.9 7.4 7.5 一 — 一 _ 複合醯胺系增稠劑 複合酿胺鋰皂(複合劑)6> _ 24 24 24 24 1)新日鐵化學公司製：Sinnflut 601(40°c中之動態黏度3〇mm2/sec)-16- 201011102 [Table 1] Urea grease urea grease (complex lithium amide soap grease) U1 U2 U3 U4 U5 U6 U7 NU1 NU2 NU3 NU4 Grease preparation (% by weight) Base oil synthetic hydrocarbon oil υ 52 52 52 52 68 52 48 61 Ester oil 2) 34 34 -34 - 17 34 - 28 A 15 alkyl diphenyl ether oil 3) One 34 1 - 76 - one mineral oil 4) - one one one 86 one — — — 76 .__ Dynamic viscosity at 40 ° C (mm1 2 3 / sec) 21 21 22 21 31 23 21 15 22 31 23 Urea system _ agent amine: octylamine 7.1 4.0 7.1 3.6 7.1 7.6 2.6 Amine: aniline 2.6 —— 3.0 — — 3.8 — I—Diisocyanate: MDI4 5) 6.9 7.4 6.9 7.4 6.9 7.4 7.5 I—One _ Composite amide amine thickener composite lithium saponin (complex) 6 _ 24 24 24 24 1) Nippon Steel Chemical Co., Ltd.: Sinnflut 601 (dynamic viscosity at 40 °c 3〇mm2/sec)
-17- 1-17- 1
Ciba Specialty Chemicals公司製：Reolube DOS(40°C 中之動態黏度 12mm1/sec) 2 松村石油硏究所製：Moresco Highlube LB15(40 °C中之動態黏度 Λ 15mm /sec) 3 石臘系（40°C中之動態黏度30.6mm1/sec) 4Produced by Ciba Specialty Chemicals Co., Ltd.: Reolube DOS (Dynamic Viscosity at 40 °C 12mm1/sec) 2 Matsumura Petroleum Research Institute: Moresco Highlube LB15 (dynamic viscosity 40 15mm / sec at 40 °C) 3 Stone wax system (40 Dynamic viscosity in °C 30.6mm1/sec) 4
日本Polyurethane工業公司製：MilionateMT 5 N烷基取代單醯胺酸之鋰鹽、二元酸之鋰鹽、N烷基取代二醯胺之混合 6 物 201011102 實施例1~實施例12 使上述脲潤滑脂與非脲潤滑脂以表2所示之比# ?昆合_ ，得到潤滑脂試料。又，於實施例1 1中係使二硫磷酸鲜 及鉬二硫代胺基甲酸酯相對於上述脲潤滑脂與非脲潤滑脂 之混合潤滑脂1 0 0重量％而分別添加2重量％。所得到之 潤滑脂試料供給至以下所示之離心油分離試驗及深溝滾珠 軸承（6204 )之常溫高速潤滑脂試驗，測定離心離油度及 潤滑脂壽命時間。有關實施例1、實施例4、實施例6、實 施例9、實施例11及實施例12亦實施以下所示之角接觸 軸承的常溫高達潤滑脂試驗。此等之測定結果一倂記載於 表2中。 <離心油分離試驗> 使離心分離機，將50g之潤滑脂試料置入離心分離管 中’依下式求出在40°C施加23000G之加速度7小時之時 的離心離油度。若離心離油度爲20重量％以上，油之供給 能力很充分。 (離心離油度、重量％)=( 1 -試驗前之增稠劑濃度/ 試驗後之增稠劑濃度）xl 00 <高溫高速潤滑脂試驗-深溝滾珠軸承（ 62 04 ) > 於深溝滾珠軸承（6204 )，使潤滑脂試料於標的運轉 面封入0.14g (軸承全空間容積的約3體積％)，以非接 觸密封製作試驗軸承。於試驗軸承負荷軸向荷重670N與 201011102 徑向荷重67N，在常溫環境下以15000rpm之旋轉速度旋 轉，測定至燒結之時間作爲潤滑脂壽命時間。在此試驗中 若潤滑脂壽命時間爲1 〇〇〇小時以上，耐久性優異。在此 耐久試驗中之軸承的節距圓徑（mm )與旋轉數（rpm )的 積之dmN値爲52萬。 <高溫高速潤滑脂試驗-角接觸軸承> 於角接觸軸承（外徑150mmx內徑100mm，內外輪 SUJ2、轉動體13/32英吋氮化矽球）中，使潤滑脂試料於 標的運轉面封入3.0g(軸承全空間容積的約1〇體積％ ) ，以非接觸密封製作試驗軸承。使試驗軸承以1.8GPa定 壓給壓下，藉外筒冷卻進行冷卻軸承，一邊使軸承外輪保 持於50°C以下，一邊以14500rpm之旋轉速度旋轉，測定 至燒結之時間作爲潤滑脂壽命時間。在此耐久試驗中之軸 承的節距圓徑（mm)與旋轉數（rpm)的積之dmN値爲 • 185 萬。 比較例1〜比較例1 0 以表2所示之脲潤滑脂或非脲潤滑脂作爲潤滑脂試料 。對於此潤滑脂試料測定與實施例1同樣的項目。對於比 較例1及比較例7亦實施上述之角接觸軸承的常溫高達潤 滑脂試驗。此等之測定結果一倂記載於表2中。 -19- 201011102 [表2] 資施例 比较例 I 2 3 4 6 β 7 t a 10 11 12 t 2 3 4 6 t 7 ft 1 10 mtmwmmm%) 脈爾滑磨 wntmvx so M 30 50 SO M 20 90 100 mmm2 50 100 WKU4 100 Wt削5 wmme SO mtmn 100 SO 弗imt磨 满滑篇NUl mmmmi 50 20 70 — — SO 50 50 10 BO 10 100 so mmsms mmmmA ZnDTP1) MoDTC2) 2t n 30 27 2t 29 2· 2S 22 n Z4 27 β 17 7 23 β 51 46 53 31 38 G204tt^' dmN=S2ff >2000 1870 1540 >2000 >2000 >2000 >2000 17t0 1210 1140 >2000 >2000 4«0 760 540 790 44« 390 410 310 710 •M 角接承·άιηΝ=185萬 >1500 一 - >1500 - >1500 一 - 920 — >1500 >1500 410 370Made by Japan Polyurethane Industrial Co., Ltd.: Milionate MT 5 N-substituted lithium salt of mono-proline, lithium salt of dibasic acid, mixed mixture of N-alkyl substituted diamine. 201011102 Example 1 - Example 12 Lubrication of the above urea The grease and non-urea greases were obtained in the ratio shown in Table 2 to obtain a grease sample. Further, in Example 11, the dithiophosphoric acid fresh and the molybdenum dithiocarbamate were added to each of the above-mentioned urea grease and the non-urea grease as a mixed grease of 10% by weight, respectively, and added by 2% by weight. . The obtained grease sample was supplied to the centrifugal oil separation test shown below and the normal temperature high-speed grease test of the deep groove ball bearing (6204) to measure the centrifugal oil separation degree and the grease life time. In the first embodiment, the fourth embodiment, the sixth embodiment, the ninth embodiment, the eleventh embodiment, and the twelfth embodiment, the angular contact bearing described below was also subjected to the normal temperature up to the grease test. The results of these measurements are shown in Table 2. <Centrifugal oil separation test> In a centrifugal separator, 50 g of the grease sample was placed in a centrifugal separation tube. The centrifugal oil separation at the time of applying an acceleration of 23,000 G at 40 ° C for 7 hours was determined according to the following formula. If the centrifugal oil separation is 20% by weight or more, the oil supply capacity is sufficient. (centrifugal oil separation, weight%) = (1 - thickener concentration before test / thickener concentration after test) xl 00 < high temperature high speed grease test - deep groove ball bearing (62 04) > The ball bearing (6204) was used to seal the grease sample to 0.14 g (about 3% by volume of the total space of the bearing) on the target running surface, and the test bearing was fabricated by non-contact sealing. The test bearing load axial load 670N and 201011102 radial load 67N were rotated at a rotational speed of 15000 rpm in a normal temperature environment, and the sintering time was measured as the grease life time. In this test, if the grease has a life time of 1 〇〇〇 or more, the durability is excellent. In this endurance test, the product of the pitch diameter (mm) and the number of revolutions (rpm) of the bearing has a dmN値 of 520,000. <High-temperature high-speed grease test-angular contact bearing> In the angular contact bearing (outer diameter 150 mm x inner diameter 100 mm, inner and outer wheel SUJ2, rotor 13/32 inch tantalum nitride ball), the grease sample is allowed to run in the target The surface was sealed with 3.0 g (about 1 vol% of the total volume of the bearing), and the test bearing was fabricated by non-contact sealing. The test bearing was pressed at a pressure of 1.8 GPa, and the bearing was cooled by cooling with an outer cylinder. While the outer bearing of the bearing was kept at 50 ° C or lower, the bearing was rotated at a rotational speed of 14,500 rpm, and the time until sintering was measured as the grease life time. The dmN値 of the product of the pitch diameter (mm) and the number of revolutions (rpm) of the bearing in this endurance test is 1.85 million. Comparative Example 1 to Comparative Example 1 0 The urea grease or the non-urea grease shown in Table 2 was used as a grease sample. The same items as in Example 1 were measured for this grease sample. For the comparative example 1 and the comparative example 7, the above-mentioned angular contact bearing was also subjected to the normal temperature up to the grease test. The results of these measurements are shown in Table 2. -19- 201011102 [Table 2] Comparative Example I 2 3 4 6 β 7 ta 10 11 12 t 2 3 4 6 t 7 ft 1 10 mtmwmmm%) Pulse Sweep wntmvx so M 30 50 SO M 20 90 100 mmm2 50 100 WKU4 100 Wt cut 5 wmme SO mtmn 100 SO 弗im im grind slip NUL mmmmi 50 20 70 — — SO 50 50 10 BO 10 100 so mmsms mmmmA ZnDTP1) MoDTC2) 2t n 30 27 2t 29 2· 2S 22 n Z4 27 β 17 7 23 β 51 46 53 31 38 G204tt^' dmN=S2ff >2000 1870 1540 >2000 >2000 >2000 >2000 17t0 1210 1140 >2000 >2000 4«0 760 540 790 44« 390 410 310 710 •M 角接承·άιηΝ=185 million>1500 I- >1500 - >1500 I-920 — >1500 >1500 410 370
1) 二硫代碟酸鋅(Adeka公司製，Kikulub Z112) 2) 鉬二硫代胺基甲酸_(Adeka公司製,Sakuralub 165) 如表2所示，於本發明所使用之潤滑脂中係已知宜爲 :(1 )爲調配有脲潤滑脂與非脲潤滑脂之潤滑脂，脲潤 滑脂之增稠劑會使聚異氰酸酯成分與單胺成分反應而得到 ，單胺成分相對於單胺全體含有脂肪族單胺46莫耳％以上 之單胺；（2 )以複合醯胺鋰皂作爲增稠劑之非脲潤滑脂 對於潤滑脂全體之調配比率爲1 〇~8〇重量％ ; ( 3 )基油係 動態黏度爲l〇~4〇mm2/sec。 產業上之利用可能性 本發明之高速軸承用潤滑脂係已調配特定之脲潤滑脂 、與以複合醯胺鋰皂作爲增稠劑之非脲潤滑脂的潤滑脂， 故可提昇在高速旋轉下之軸承耐久壽命。因此，可適宜利 -20- 201011102 用於作爲組入於以車床、鑽床、鏜孔機、銑床、硏磨機、 ϊ行磨機（honing machine )、超精加工盤、拋光機等以高 速進行滑動、旋轉的工作機械之主軸支撐部且封入滾動軸 承的高速軸承用潤滑脂。而且，如油氣潤滑法等般使潤滑 油連續而供給之方式相異，可封入潤滑脂而使用，故亦可 刪減運轉成本、省空間化。1) Zinc dithiosilicate (Kikulub Z112, manufactured by Adeka Co., Ltd.) 2) Molybdenum dithiocarbamic acid _ (Sakuralub 165, manufactured by Adeka Co., Ltd.) As shown in Table 2, it is used in the grease used in the present invention. It is known that: (1) is a grease formulated with a urea grease and a non-urea grease, and a thickener of the urea grease is obtained by reacting a polyisocyanate component with a monoamine component, and the monoamine component is relative to the monoamine. All of the monoamines containing more than 46% by mole of the aliphatic monoamine; (2) the ratio of the non-urea grease using the complex lithium amide as the thickener to the grease is 1 〇 to 8 〇 by weight; 3) The dynamic viscosity of the base oil system is l〇~4〇mm2/sec. Industrial Applicability The grease for high-speed bearing of the present invention has been formulated with a specific urea grease and a non-urea grease which is a thickener of composite lithium amide soap, so that it can be improved under high-speed rotation. The bearing has a long life. Therefore, it can be used as a group to be used in lathes, drill presses, boring machines, milling machines, honing machines, honing machines, super finishing machines, polishing machines, etc. at high speed. Grease for high-speed bearings that seals the spindle support of the working machine and seals the rolling bearing. Further, in the case of the oil-air lubrication method, the lubricating oil is continuously supplied and supplied in a different manner, and the grease can be sealed and used, so that the running cost and the space can be reduced.
【圖式簡單說明】 圖1係表示已封入本發明之高速軸承用潤滑脂的角接 觸軸承之縱截面圖。 圖2係表示角接觸軸承之截面圖。 【主要元件符號說明】 11 :角接觸軸承 12 :內輪 • 13 :外輪 14 :轉動體（鋼球） 5 :保持器 6 :密封構件 7 :潤滑脂口袋 8 :潤滑脂 -21 -BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing a corner contact bearing in which a grease for a high speed bearing of the present invention is sealed. Figure 2 is a cross-sectional view showing an angular contact bearing. [Main component symbol description] 11 : Angular contact bearing 12 : Inner wheel • 13 : Outer wheel 14 : Rotating body (steel ball) 5 : Retainer 6 : Sealing member 7 : Grease pocket 8 : Grease -21 -