Brand
Mobil (ExxonMobil)
Type
Industrial greases
Viscosity
NLGI 3
Manufacturer code
2015A020G015

Mobil Polyrex EM 103

Stiffer polyurea grease for large or vertically mounted electric motor bearings

Specifications

Viscosity
NLGI 3
Manufacturer code
2015A020G015
Availability
On order

Manufacturer's description

Mobil Polyrex EM Series are super-premium greases specially formulated for electric-motor bearings. Their advanced polyurea thickener formulation and proprietary manufacturing techniques provide improved bearing performance and protection for long electric motor life. The series comprises Mobil Polyrex EM (NLGI 2) and Mobil Polyrex EM 103 (NLGI 3), both meeting DIN 51825:2004-06 K 2 P -20. Both greases deliver outstanding grease life for long-term, high-temperature lubrication of ball and roller bearings, particularly in sealed-for-life applications, with lubrication life of 750+ hours in the ASTM D3336 test at 177°C. The advanced polyurea thickener offers increased durability versus conventional polyurea greases under mechanical shear, along with excellent corrosion resistance; Mobil Polyrex EM provides additional protection under mild salt-water wash conditions compared to EM 103, and also offers low-noise properties suited to noise-sensitive 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, fin fan bearings, high-temperature pump bearings, and factory-filled, sealed-for-life ball bearings. Mobil Polyrex EM 103 is more specifically recommended for vertically mounted bearings or very large motors requiring a stiffer grease consistency. The greases have been shown to be compatible, per ASTM D6185, with a number of ExxonMobil lithium-complex greases and competitive mineral polyurea products.

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. 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

Performance & benefits

  • Outstanding grease life Outstanding long-life, high-temperature Advanced polyurealubrication of ball and roller bearings, particularly in sealed-for-life applications
  • Increased durability versus thickenerconventional polyurea greases when subjected to mechanical shear forces
  • Excellent corrosion Mobil Polyrex EM and MobilPolyrex EM 103 provide protection against rust and corrosion.Mobil Polyrex EM provides additional
  • resistance protection under mild salt-waterwash conditions versus Polyrex EM 103
  • Low-noise properties Mobil Polyrex EM is suitablefor lubrication of ball bearings in many noise-sensitive applications

Standards & approvals

  • DIN 51825:2004-06 - K 2 P -20

Approved for

  • DIN

Typical characteristics

PropertyTypical valueMethod
Thickener typePolyurea
ColourBlueVisual
Copper strip corrosion, 24 h, 100 CRating1AASTM D4048
Corrosion Preventive PropertiesRatingPassASTM D1743
Dropping point°C270ASTM D2265
Four-Ball Wear Test, Scar Diametermm0.6ASTM D2266
Low Temperature Torque, Running, -29 C, g-cm910ASTM D1478
Low Temperature Torque, Starting, -29 C, g-cm5840ASTM D1478
Lubrication life @ 177 Ch750+ASTM D3336
Oil separation, 0.25 psi, 24 h @ 25 C, mass%0.1ASTM D1742
Penetration, 60X, 0.1 mm250ASTM D217
Penetration, change from 60X to 100, 000X, 0.1 mm40ASTM D217
Viscosity @ 100 C, Base oilmm2/s12.2ASTM D445
Viscosity @ 40 C, Base oilmm2/s115ASTM D445
Viscosity index95ASTM D2270
Water Washout, Loss @ 79 Cwt%0.8ASTM D1264

Complete documentation

We email you the sheets listed below in a single archive. No account, no order required.

  • SDSEN
  • SDSRO
  • TDSEN

Where should the files go?

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What you get

    Str. Soporului, nr. 12, Cluj-NapocaContactAbout us
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