Mobil Polyrex EM and Mobil Polyrex EM 103 offer the following features and benefits: FeaturesAdvantages and Potential 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 Mobil Polyrex EM and Mobil Polyrex EM 103 provide protection against rust and corrosion. Mobil Polyrex EM provides additional protection under mild salt-water wash conditions versus Polyrex EM 103 Low-noise properties Mobil Polyrex EM is suitable for lubrication of ball bearings in many noise-sensitive applications   

    Mobil Polyrex EM NLGI Grade 2 Color Blue Base Oil Viscosity, ASTM D 445   cSt @ 40°C 115 cSt @ 100°C 12.5 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 @ 177°C 750+ 4-Ball Wear Scar, ASTM D 2266, @ 40kg, 1200 rpm, 75°C, 1 hr, mm 0.41 Low Temperature Torque, ASTM D 1478, g-cm @ -29°C   Starting 7500 Running 800 EMCOR Corrosion Performance, 10% Synthetic Sea Water ASTM D 6138 (Prepared As Per ASTM D 665B) 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   

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.

Mobil Polyrex EM 103 is more specifically recommended for applications such as vertically mounted bearings, or very large motors where a stiffer grease consistency may be required by the OEM, and low noise properties are not required.

Mobil Polyrex EM greases have been shown to be compatible with a number of ExxonMobil lithium complex greases, as well as competitive electric motor mineral polyurea products, as determined by the methodology of ASTM D6185.  For specific questions about grease compatibility, contact your Mobil representative.

Key applications include: Electric motor bearingsFin fan bearingsHigh-temperature pump bearingsFactory-filled, sealed-for-life ball bearingsBall or roller bearings operating at high temperatures where low oil separation is requiredMobil Polyrex EM for ball or roller bearings operating in noise sensitive environments