Mobil Polyrex EM is a blue in color NLGI 2 polyurea grease specially formulated for electric-motor bearings. The advanced thickener formulation and proprietary manufacturing techniques provide improved bearing performance and protection for long electric motor life.
Tubes contain 13.7oz (388g) each.
Benefits:
- Outstanding grease life: Outstanding long-life, high-temperature lubrication of ball and roller bearings, particularly in sealed-for-life applications.
- Advanced polyurea thickener: Increased durability versus conventional polyurea greases when subjected to mechanical shear forces.
- Excellent corrosion resistance: Provides protection against rust and corrosion. Provides additional protection under mild salt-water wash conditions.
- Low-noise properties: Suitable for lubrication of ball bearings in many noise-sensitive applications.
Applications:
- Electric motor bearings
- Fin fan bearings
- High-temperature pump bearings
- Factory-filled, sealed-for-life ball bearings
- Ball or roller bearings operating at high temperatures where low oil separation is required
| Typical Properties | Mobil Polyrex EM |
| NLGI Grade | 2 |
| Color | Blue |
| Base Oil Viscosity, ASTM D 445 | - |
| cSt @ 40C | 115 |
| cSt @ 100C | 12.2 |
| Viscosity Index, ASTM D 2270 | 95 |
| Penetration, ASTM D217 worked, 60x, mm/10 | 285 |
| Penetration Change after 100.000 strokes, ASTM D217, mm/10 | 40 |
| Dropping Point, ASTM D 2265, C (F) | 260 |
| Oil separation test, ASTM D 1742, % | 0.5 |
| High Temperature Grease Life, ASTM D 3336, Hours @ 177C | 750+ |
| 4-Ball Wear Scar, ASTM D 2266, @ 40kg, 1200 rpm, 75C, 1hr, mm | 0.41 |
| Low Temperature Torque, ASTM D 1478, g-cm @ -29C | - |
| Starting | 7500 |
| Running | 800 |
| EMCOR Corrosion Performance, 10% Synthetic Sea Water ASTM D 6138 | 0,1 (No Rust) |
| Rust Protection, ASTM D 1743, Distilled Water | Pass |
| Copper Corrosion Resistance, ASTM D 4048 | 1A |
| Water Washout, ASTM D 1264, % | 1.9 |