Unirex™年代2
油脂
产品描述
Unirex™年代2是锂复合增厚高温润滑脂,基于波动率较低,合成多元醇酯液,富含违禁添加剂。这是唯一适合高温应用,推荐上操作温度200ºC / 392°F基于ASTM D3336性能。另外这个油脂具有良好的氧化稳定性,防锈特性。
特性和好处
Unirex年代2润滑脂是专门为高温应用开发的基于矿物油的油脂可能无法提供足够的保护。酯基液的波动性较低的工作温度有关,这可能导致润滑脂寿命长相比传统矿物油的产品。Unirex年代2适用于高温操作频繁relubrication是不切实际的。
本产品提供以下性能特点:
突出的耐高温性能和更好的润滑和磨损比传统油脂保护
低的基础股票波动性提供润滑油寿命长和潜在延长再润滑间隔。
上操作温度200ºC / 392°F基于ASTM D3336高温寿命性能
应用程序
应用程序指出:酯基础油Unirex年代2不兼容许多常见的弹性体密封材料。例如,它可能会导致软化或肿胀丁腈橡胶密封。建议设备制造商或你的埃克森美孚代表咨询关于密封在一个特定的应用程序的兼容性。
Unirex年代2是推荐的埃克森美孚为严重的应用程序包括:
输送机轴承在窑和烤箱
钢厂钢包轴承
喷气式飞机起动离合器总成
玻璃纤维制造的关键烤箱轴承
Unirex™ S 2
Grease
Product Description
Unirex™ S 2 is a lithium complex thickened high-temperature grease, based on a low volatility, synthetic polyol ester fluid, fortified with performance-enhancing additives. It is uniquely suited for high temperature applications, with an upper operating temperature recommendation of 200º C / 392°F based upon ASTM D3336 performance. Additionally this grease possesses good oxidation stability, and rust preventive characteristics.
Features and Potential Benefits
Unirex S 2 grease is specially developed for high temperature applications where mineral oil based greases may not provide adequate protection. The ester base fluid has a low volatility at the working temperatures involved, this can lead to long grease life when compared to a conventional mineral oil product. Unirex S 2 is suitable for high temperature operations where frequent relubrication is not practical.
This product offers the following performance features:
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Outstanding high-temperature performance with better lubricity and wear protection than conventional grease
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Low base stock volatility helping to provide long lubricant life and potentially extend re-lubrication intervals.
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An upper operating temperature of 200º C /392°F based upon ASTM D3336 High Temperature Life performance
Applications
Application notes: The ester base oil of Unirex S 2 is not compatible with many common elastomer seal materials. For example, it may cause a softening or swelling of NBR seals. It is recommended that the equipment manufacturer or your ExxonMobil representative be consulted regarding seal compatibility in a specific application.
Unirex S 2 is recommended by ExxonMobil for severe applications including:
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Conveyor bearings in kilns and ovens
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Steel mill ladle bearings
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Jet aircraft starter clutch assemblies
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Critical oven bearings in Fiberglas manufacture
Typical Properties
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Property
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Unirex S 2
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NLGI Grade
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2
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Thickener Type
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Li-complex
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Color, visual
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Orange/Brown
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Worked Penetration,, ASTM D 217, mm/10
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280
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Dropping Point ASTM D 2265, ºC
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280
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4-Ball Wear, scar diameter, ASTM D 2266, mm
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0.60
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Viscosity of Base Oil at 40 ºC, ASTM D 445, cSt
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170
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Oil Separation, ASTM D 1742, mass %
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3
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Lubrication life at 204 ºC, ASTM D 3336, hours
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500
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Corrosion Prevention, ASTM D 1743, Rating
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Pass
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4-Ball Weld Load, ASTM D 2596, Kg
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160
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Health and Safety
Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.
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