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ExxonMobil Mobil Centaur Moly 2
Categories: Fluid; Lubricant; Calcium Gellant

Material Notes: Mobil Centaur Moly is a premium quality grease formulated with advanced calcium sulfonate thickener technology. The calcium sulfonate thickener in the Mobil Centaur Moly  products represents a significant advance in grease formulation technology. Unlike conventional soap-base thickeners (i.e. lithium, aluminium, and calcium soaps), the calcium sulfonate thickener does much more than simply impart consistency. It imparts excellent corrosion and water-resistance properties to the grease and has inherent extreme-pressure protection properties that enhance load-carrying ability. Further, the EP properties derived from the calcium thickener also have inherently better thermal stability than those from conventional Sulphur/Phosphorus EP additives. Fortified with molybdenum disulphide to complement its robust extreme-pressure additive system, Mobil Centaur Moly  is particularly well suited to meet the demanding lubrication requirements of heavy-duty truck chassis, construction and mining equipment, and heavily load industrial bearings. Mobil Centaur Moly  also provides outstanding resistance against the effects of water washout, water spray-off and corrosion.

Mobil Centaur Moly  products are highly recommended for heavily loaded applications or environments highly contaminated with water. Specific examples of such applications include: Heavy-duty trucks, including chassis, spring shackles, king pins, tie rods, u-joints, hinge and bucket pins and fifth wheels; Mining and construction equipment; Marine equipment; Highly loaded industrial bearings

Key Words: NLGI Grade 2
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Physical PropertiesOriginal ValueComments
Kinematic Viscosity at 40°C (104°F) 320 cStASTM D445
 
Mechanical PropertiesOriginal ValueComments
Four Ball Extreme Pressure, Weld Load 500 kgASTM D2596
Four Ball Wear 0.380 mm40 kg, 1200 rpm; ASTM D2266
Penetration >= 265Worked, 25°C; ASTM D217
Timken Test 60.0 lb
 
Thermal PropertiesOriginal ValueComments
Dropping Point 280 °CASTM D2265
 
Descriptive Properties
Colorgrey
Soap/Thickener Typecalcium sulfonate
Water Spray Resistance, ASTM D4049, % Spray-off20
Water Washout, ASTM D1264, wt%1@ 79°C

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