Mobil Centaur XHP 221

Mobil grease , United States

Multipurpose Calcium Sulfonate Complex Grease

Product Description

Mobil Centaur XHP 221 premium multipurpose grease has been formulated to lubricate rolling element bearings in industrial machinery operating at high temperatures under wet, heavily loaded conditions.


Features and Benefits

Mobil Centaur XHP 221 offers the following features and benefits :

FeaturesAdvantages and Potential Benefits
Excellent resistance to water and corrosionThe calcium sulfonate thickener system protects against water washout and bearing corrosion under challenging conditions
Exceptional mechanical stabilityResists softening under mechanical shear in the presence of process water contamination.
High load carrying propertiesExcellent extreme pressure protection at low to moderate speeds is provided by the grease thickener system.
Excellent thermal stabilityResists 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

Mobil Centaur XHP 221 meets or exceeds the requirements of: 
DIN 51825: (2004-06)KP1-2G-20


Typical Properties

Mobil Centaur XHP 221 
NLGI Grade1.5
Thickener TypeCalcium Sulfonate Complex
ISO Viscosity Grade of Oil220
Dropping Point, ASTM D 2265, °C318
Worked Penetration, ASTM D 217, mm/10 @25°C300
Worked Penetration Change after 100k Strokes, ASTM D 217, mm/1010
Water Washout @ 79°C, ASTM D 1264, wt%1
EMCOR Bearing Corrosion in Distilled Water, ASTM D 6138, Rating0/1
Copper Corrosion, ASTM D 4048, Rating1b
Four Ball Weld, ASTM D 2596, kgf400
Timken OK Load, ASTM D 2509, kg27
Oil Separation @ 100°C after 30 hours, ASTM D 6184, wt%2
Wheel Bearing Life @ 160°C, ASTM D 3527, hours120


Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended applications and the recommendations provided in the Material Safety Data Sheet. MSDS's are available upon request through your sales contact office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.

All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries unless indicated otherwise.


Exxon Mobil Corporation
22777 Springwoods Village Parkway
Spring TX 77389

1-800-ASK MOBIL (275-6624)

Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification. Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations. The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit
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