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ExxonMobil Unirex S 2

Category Fluid , Lubricant , Lithium Gellant
Manufacturer
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF ExxonMobil Unirex S 2.pdf
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Material Notes:
Unirex S 2 is premium-quality high-temperature grease, based on a low volatility, synthetic polyol ester fluid, thickened with a lithium complex soap thickener, and containing performance-enhancing additives. Unirex S 2 grease gives excellent results when used in high temperature applications, and has a long life under these conditions. Unirex S 2 compares favourably with expensive silicone based high temperature greases in many applications, with the added advantage of having better lubricity under high bearing loads. The grease has an upper operating temperature of 200º C, good oxidation stability, and prevents rusting and metal corrosion. Unirex S 2 grease is a niche product specially developed for high temperature applications where mineral oil based greases do not provide adequate protection. The ester base fluid has a low volatility at the working temperatures involved, and this leads to extended grease life when compared to a conventional mineral oil product. Unirex S 2 is therefore suitable for high temperature operations where frequent relubrication is not practical.Application notes: The ester base oil of Unirex S 2 is not compatible with all common elastomer seal materials. For example, it may cause a softening or swelling of BUNA N seals. It is recommended that the equipment manufacturer or the Exxon representative be consulted regarding seal compatibility in a specific application. Because Unirex S 2 is a special-purpose product, it should be used to meet lubrication requirements not satisfied by conventional lubricants. Proven applications for Unirex S 2 include: Conveyor bearings in kilns and ovens; Steel mill ladle bearings; Jet aircraft starter clutch assemblies; Critical oven bearings in Fiberglas manufacture
Physical Properties Metric English Comments
Kinematic Viscosity at 40°C (104°F) 150 cSt
150 cSt
ASTM D445
Mechanical Properties Metric English Comments
Four Ball Extreme Pressure, Weld Load 160 kg
353 lb (mass)
ASTM D2596
Four Ball Wear 0.600 mm
0.0236 in
40 kg, 1200 rpm; ASTM D2266
Penetration 280
280
Worked, 25°C; ASTM D217
Oil Separation 3.0 %
3.0 %
ASTM D1742
Thermal Properties Metric English Comments
Dropping Point 280 °C
536 °F
ASTM D2265
Descriptive Properties Value Comments
Color orange/brown
Corrosion Prevention, ASTM D1743 pass
Lubrication Life, ASTM D3336, hours 500
@ 177°C
Soap/Thickener Type lithium complex
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