Mobil Unirex N3 390g Lithium Complex Grease for Electric Motor Bearings

Mobil Unirex N3 is a high-performance lithium complex grease developed by ExxonMobil for demanding industrial bearing applications. It is specifically designed for rolling-element bearings operating under high temperatures, high speeds, and long relubrication intervals, with a strong focus on electric motor lubrication.

Thiselectric motor grease provides exceptional thermal stability, maintaining structural integrity at temperatures up to 190 °C without softening. Laboratory and field testing confirm reliable long-term lubrication at continuous bearing temperatures up to 140 °C, making it well suited for continuous-duty motors and critical equipment.

Mobil Unirex N3 also delivers excellent low-temperature performance, ensuring low start-up torque at temperatures as low as −20 °C. Its strong resistance to water washout and corrosion helps protect bearings from rust and premature failure, even in humid or washdown environments.

With proven performance in applications where DmN values exceed 360,000, this lithium complex grease is ideal for high-speed bearings, sealed-for-life systems, and vertically mounted bearings where grease retention and consistency are essential.

Key Features and Benefits

• High-temperature resistance up to 190 °C without grease softening

• Long service life at continuous operating temperatures up to 140 °C

• Low start-up torque at −20 °C, suitable for cold-start conditions

• Excellent water washout resistance and corrosion protection

• Reliable lubrication for high-speed bearings with DmN >360,000

Applications

• Electric Motor Bearings:
  Recommended for NEMA Insulation Class A, B, and F motors, ensuring smooth operation and extended bearing life.

• High-Speed Bearings:
  Ideal for deep-groove ball bearings and other high-speed industrial bearing applications.

• Industrial Equipment:
  Suitable for sealed-for-life systems, vertically mounted bearings, and other demanding industrial lubrication points.

Technical Specifications

• Product Name: Mobil Unirex N3

• Grease Type: Lithium Complex Grease

• Base Oil: Mineral Oil

• NLGI Grade:3

• Temperature Range: −20 °C to 190 °C (continuous up to 140 °C)

• Standard Compliance: DIN 51825 – K3N – 20L; ISO L-XBDHA 3

• Packaging: 390 g cartridge, 18 kg pail, and other industrial packs

• Manufacturer:ExxonMobil