Mobil Centaur™ Moly Series
Calcium Sulfonate Grease
The Mobil Centaur™ Moly Series of greases are premium quality greases 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, aluminum, 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 3% molybdenum disulphide to complement a robust extreme-pressure additive system, the Mobil Centaur Moly Series of greases are particularly well suited to meet the demanding lubrication requirements of heavy-duty truck chassis, construction and mining equipment, and heavily load industrial bearings. The Mobil Centaur Moly Series also provides outstanding resistance against the effects of water washout, water spray-off and corrosion, and are available in NLGI 1 and 2 grades offering a range of pumpability and dispensing options.
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Features and Benefits
The Mobil Centaur Moly greases are members of the Mobil™ brand of lubricating products recognized for their high quality and reliability, as well as performance capabilities. This family of products is manufactured to the strictest quality standards. A key feature for this product family is its reputation for reliability and consistency, and its ability to handle tough applications. The Mobil Centaur Moly Series are formulated with state-of-the-art high-performance calcium sulfonate thickener technology and is formulated for heavy-duty truck, mining and construction applications as well as heavily loaded industrial bearings. The Mobil Centaur Moly greases offer the following potential benefits:
• Excellent extreme-pressure protection and load-carrying ability for equipment protection under heavy and shock loading
• Fortified with 3% molybdenum disulphide for retention of EP performance and equipment protection in severe sliding situations
• Outstanding corrosion and water resistance for highly reliable lubrication in hostile environments
Applications
The Mobil Centaur Moly Series of greases 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
Properties and Specifications
|
Property |
1 |
2 |
|
Grade |
NLGI 1 |
NLGI 2 |
|
Thickener Type |
Calcium Sulfonate |
Calcium Sulfonate |
|
Color, Visual |
Grey |
Grey |
|
Dropping Point, °C, ASTM D2265 |
295 |
308 |
|
Four-Ball Extreme Pressure Test, Weld Load, kgf, ASTM D2596 |
500 |
500 |
|
Four-Ball Wear Test, Scar Diameter, mm, ASTM D2266 |
0.5 |
0.5 |
|
Molybdenum Disulfide Content, wt %, CALCULATED |
3 |
3 |
|
Penetration, 60X, 0.1 mm, ASTM D217 |
325 |
280 |
|
Timken OK Load, lb, ASTM D2509 |
60 |
60 |
|
Viscosity @ 100 C, Base Oil, mm2/s, ASTM D445 |
24.0 |
24.0 |
|
Viscosity @ 40 C, Base Oil, mm2/s, ASTM D445 |
320 |
320 |
|
Viscosity Index, ASTM D2270 |
95 |
95 |
|
Water Sprayoff, Loss, %, ASTM D4049 |
25 |
20 |
|
Water Washout, Loss @ 79 C, wt%, ASTM D1264 |
1 |
1 |
Health and Safety
Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @ http://www.msds.exxonmobil.com/psims/psims.aspx