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Dầu Nhớt Mobil Polyrex Em

Price per Unit (KG): Call for price

Description

Description

Super-premium Mobil Polyrex™ EM Series greases are 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.

Features and Benefits

 Mobil Polyrex EM and Mobil Polyrex EM 103 offer the following features and benefits:

FeaturesAdvantages and Potential Benefits

Outstanding grease lifeOutstanding long-life, high-temperature lubrication of ball and roller bearings, particularly in sealed-for-life applications

Advanced polyurea thickenerIncreased durability versus conventional polyurea greases when subjected to mechanical shear forces

Excellent corrosion resistanceMobil 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 propertiesMobil Polyrex EM is suitable for lubrication of ball bearings in many noise-sensitive applications 

 

Applications

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 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

Mobil Polyrex EM for ball or roller bearings operating in noise sensitive environments

Typical Properties

 

  Mobil Polyrex EM Mobil Polyrex EM 103
NLGI Grade 2 3
Color Blue Blue
Base Oil Viscosity, ASTM D 445    
cSt @ 40°C 115 115
cSt @ 100°C 12.2 12.2
Viscosity Index, ASTM D 2270 95 95
Penetration, ASTM D217 worked, 60x, mm/10 285 250
Penetration Change after 100.000 strokes, ASTM D217, mm/10 40 40
Dropping Point, ASTM D 2265, °C (°F) 260 270
Oil separation test, ASTM D 1742, % 0.5 0.1
High Temperature Grease Life, ASTM D 3336, Hours @ 177°C 750+ 750+
4-Ball Wear Scar, ASTM D 2266, @ 40kg, 1200 rpm, 75°C, 1 hr, mm 0.41 0.6
Low Temperature Torque, ASTM D 1478, g-cm @ -29°C    
Starting 7500 9300
Running 800 1000
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 Pass
Copper Corrosion Resistance, ASTM D 4048 1A 1A
Water Washout, ASTM D 1264, % 1.9 0.8
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