Mobil Centaur XHP™ 221

Mobil grease , United States

Multipurpose Calcium Sulphonate 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 :

 

Features

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.

 

Applications

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

Property

 

Grade

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

1

Color, Visual

Brown

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

0.5

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

0.45

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

0.3

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

500

Viscosity Index, ASTM D2270

94

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

18.7

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

220

Dropping Point, °C, ASTM D2265

>308

Timken OK Load, kg, ASTM D2509

55

SKF Emcor Rust Test, Distilled Water, ASTM D6138

1 , 1

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

1A

Penetration, 60X, 0.1 mm, ASTM D217

305

Corrosion Preventive Properties, Rating, ASTM D1743

Pass

 

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

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

01-2023


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 www.exxonmobil.com
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