Mobil Polyrex EM 103

Specifications

Brand

Mobil (ExxonMobil)

Range

Mobil Polyrex

Category

Industrial greases

Viscosity

NLGI 3

Manufacturer code

2015A020G015

Availability

On request

Typical characteristics

Manufacturer's description

Mobil Polyrex EM 103 is the super-premium ExxonMobil polyurea grease in NLGI 3, specially formulated for electric-motor bearings. It has a stiffer consistency than Mobil Polyrex EM and is specifically recommended for vertically mounted bearings or very large motors where the manufacturer may require a stiffer grease. It delivers outstanding high-temperature grease life, particularly in sealed-for-life ball bearings (750+ hours in the ASTM D3336 test at 177 °C), increased durability under mechanical shear, low oil separation, and protection against rust and corrosion. It is recommended by many major bearing and electric-motor manufacturers for electric-motor, fin-fan and high-temperature pump bearings.

Applications

• 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 specifically recommended for applications such as vertically mounted bearings or very large motors where a stiffer grease consistency may be required by the OEM.
• Electric-motor bearings.
• 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 in noise-sensitive environments.
• Shown to be compatible with a number of ExxonMobil lithium-complex greases, as well as competitive electric-motor mineral polyurea products (per ASTM D6185); contact your Mobil representative for specific compatibility questions.

Performance & benefits

• The advanced polyurea thickener gives outstanding grease life and outstanding long-life, high-temperature lubrication of ball and roller bearings, particularly in sealed-for-life applications, with increased durability compared with conventional polyurea greases when subjected to mechanical shear forces.
• Excellent corrosion resistance: both Mobil Polyrex EM and Mobil Polyrex EM 103 protect against rust and corrosion, with Mobil Polyrex EM offering additional protection under mild salt-water wash conditions compared with Polyrex EM 103.
• Low-noise properties make Mobil Polyrex EM suitable for lubricating ball bearings in many noise-sensitive applications.