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Mobil Polyrex™ EM Series
Mobil Polyrex EM greases are recommended by many major bearing and electric motor manufacturers for long-life lubrication of electric motor ball and roller bearings.
| Brand |
Mobil |
|---|
Description
Applications
Many major bearing and electric motor manufacturers recommend Mobil Polyrex EM greases for long-life lubrication of electric motor ball and roller bearings. Synthetic Aviation Grease In Karachi
For example, the OEM specifically recommends using Mobil Polyrex EM 103 for applications such as vertically mounted bearings or very large motors, particularly when a stiffer grease consistency is needed.
Testing using the methodology of ASTM D6185 shows that Mobil Polyrex EM greases are compatible with several ExxonMobil lithium complex greases and competitive electric motor mineral polyurea products. For specific questions about grease compatibility, contact your Mobil representative. Synthetic Aviation Grease In Karachi.
Key applications include:
• Electric motor bearings
• Fin fan bearings
• High-temperature pump bearings
• Factory-filled, sealed-for-life ball bearings
• Ball or roller bearings operate at high temperatures and require low oil separation.
• Mobil Polyrex EM for ball or roller bearings operating in noise sensitive environments
Specifications and Approvals
| This product meets or exceeds the requirements of: | MOBIL POLYREX EM |
| DIN 51825:2004-06 – K 2 P -20 | X |
Properties and Specifications of Synthetic Aviation Grease:
| Property | MOBIL POLYREX EM | MOBIL POLYREX EM 103 |
| Grade | NLGI 2 | NLGI 3 |
| Thickener Type | Polyurea | Polyurea |
| Color, Visual | Blue | Blue |
| Copper Strip Corrosion, 24 h, 100 C, Rating, ASTM D4048 | 1A | 1A |
| Corrosion Preventive Properties, Rating, ASTM D1743 | PASS | PASS |
| Dropping Point, °C, ASTM D2265 | 260 | 270 |
| Four-Ball Wear Test, Scar Diameter, mm, ASTM D2266 | 0.41 | 0.6 |
| Low Temperature Torque, Running, -29 C, g-cm, ASTM D1478 | 800 | 1000 |
| Nominal Temperature Torque, Starting, -29 C, g-cm, ASTM D1478 | 7500 | 9300 |
| Lubrication Life @ 177 C, h, ASTM D3336 | 750+ | 750+ |
| Oil Separation, mass%, ASTM D1742 | 0.5 | 0.1 |
| Penetration, 60X, 0.1 mm, ASTM D217 | 285 | 250 |
| Acumen, Change from 60X to 100,000X, 0.1 mm, ASTM D217 | 40 | 40 |
| SKF Emcor Rust Test, 10% Synthetic Sea Water, ASTM D6138 | 0.1 | |
| Cohesiveness @ 100 C, Base Oil, mm2/s, ASTM D445 | 12.2 | 12.2 |
| Viscosity @ 40 C, Base Oil, mm2/s, ASTM D445 | 115 | 115 |
| Ropiness Index, ASTM D2270 | 95 | 95 |
| Water Washout, Loss @ 79 C, wt%, ASTM D1264 | 1.9 | 0.8 |
