Mobil SHC bearing grease

Mobil Centaur XHP™ 221

Multipurpose Calcium Sulphonate Complex Grease

Our Mobil Centaur XHP™ 221 premium multipurpose grease is designed to lubricate industrial bearings in wet, high-temperature and heavy load applications. It is formulated to remain stable and perform well under conditions with:

  • Water washout and bearing corrosion
  • Process water contamination
  • Extreme pressure
  • High temperatures

Equipment lubricant recommendations

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


Features and Benefits

Mobil Centaur XHP 221 offers the following features and benefits :



Advantages and Potential Benefits

Excellent resistance to water and corrosion

The calcium sulphonate thickener system protects against water washout and bearing corrosion under challenging conditions

Exceptional mechanical stability

Resists softening under mechanical shear in the presence of process water contamination.

High load carrying properties

Excellent extreme pressure protection at low to moderate speeds is provided by the grease thickener system.

Excellent thermal stability

Resists oxidation and oil separation at high temperatures, and provides excellent life in accelerated bearing life tests.



Mobil Centaur XHP 221 is recommended for lubrication of rolling element bearings in machinery operating at high temperatures where resistance to water washing and corrosion are important. Specific examples of such applications include :

     •  Wet-end paper machine bearings

     •  Heavily loaded industrial ball and roller bearings

     •  Bearings in steel mill and mining operations


Specifications and Approvals


This product meets or exceeds the requirements of:

DIN 51825: 2004-06 KPF1-2G-20


Properties and Specifications




NLGI 1.5

Thickener Type

Calcium Sulfonate

SKF Emcor Rust Test, Acidic Water, ASTM D6138

1 , 1

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


Color, Visual


Oil Separation, 30 h @ 100 C, mass%, ASTM D6184


Four-Ball Wear Test, Scar Diameter, mm, ASTM D2266


Oil Separation, 168 h @ 40 C, mass%, DIN 51817


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


Viscosity Index, ASTM D2270


Viscosity @ 100 C, Base Oil, mm2/s, ASTM D445


Viscosity @ 40 C, Base Oil, mm2/s, ASTM D445


Dropping Point, °C, ASTM D2265


Timken OK Load, kg, ASTM D2509


SKF Emcor Rust Test, Distilled Water, ASTM D6138

1 , 1

Copper Strip Corrosion, 24 h, 100 C, Rating, ASTM D4048


Penetration, 60X, 0.1 mm, ASTM D217


Corrosion Preventive Properties, Rating, ASTM D1743



Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @