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.

 

Equipment lubricant recommendations

Our Mobil Serv℠ Product Selector tool will help you identify lubricant(s) for your specific equipment.

Data sheets

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

Base Oil Viscosity of Greases @ 40 C, mm2/s, AMS 1697

320

320

Color, Visual

Grey

Grey

Dropping Point, °C, ASTM D2265

288

280

Four-Ball Extreme Pressure Test, Weld Point, kgf, ASTM D2596

500

500

Four-Ball Wear Test, Scar Diameter, 40 kg, 1200 rpm, 1 h, 75 C, mm, ASTM D2266

0.5

0.38

Molybdenum Disulfide Content, wt %, CALCULATED

3

3

Penetration, 60X, 0.1 mm, ASTM D217

325

265(min)

Spray Off, %, ASTM D4049

20

Timken, Minimum OK Load, lb, ASTM D2509

60

60

Water Sprayoff, Loss, %, ASTM D4049

25

Water Washout, 1 h @ 79 C, wt%, ASTM D1264

1

Water Washout, Loss @ 79 C, wt%, ASTM D1264

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