Multipurpose Calcium Sulphonate Complex Grease
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Mobil Centaur XHP 221
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
| Mobil Centaur XHP 221 meets or exceeds the requirements of: | |
| DIN 51825: (2004-06) | KP1-2G-20 |
Typical Properties
| Mobil Centaur XHP 221 | |
| NLGI Grade | 1.5 |
| Thickener Type | Calcium Sulphonate Complex |
| Color | Brown |
| ISO Viscosity Grade of Oil | 220 |
| Dropping Point, ASTM D 2265, °C | 318 |
| Worked Penetration, ASTM D 217, mm/10 @25°C | 300 |
| Worked Penetration Change after 100k Strokes, ASTM D 217, mm/10 | 10 |
| Water Washout @ 79°C, ASTM D 1264, wt% | 1 |
| EMCOR Bearing Corrosion in Distilled Water, ASTM D 6138, Rating | 0/1 |
| Copper Corrosion, ASTM D 4048, Rating | 1b |
| Four Ball Weld, ASTM D 2596, kgf | 400 |
| Timken OK Load, ASTM D 2509, kg | 27 |
| Oil Separation @ 100°C after 30 hours, ASTM D 6184, wt% | 2 |
| Wheel Bearing Life @ 160°C, ASTM D 3527, hours | 120 |