Mobil Polyrex 461 EP

Standards & approvals

• DIN 51825 KPF1P-20

  Lubricating grease KPF1P-20 — DIN 51825

  Grease class DIN 51825: K = bearings, P = EP additives, F = solid lubricants, 1 = NLGI grade, P = maximum temperature, -20 = minimum temperature.

Specifications

Brand

Mobil (ExxonMobil)

Range

Mobil Polyrex

Category

Industrial greases

Viscosity

NLGI 1

Manufacturer code

2015A020G040

Availability

On request

Typical characteristics

Manufacturer's description

Mobil Polyrex 461 EP is a shear-stable polyurea grease with excellent extreme-pressure (EP) and load-carrying characteristics. Its proprietary polyurea thickener system provides excellent resistance to oxidation and oil separation at operating temperatures as high as 170°C, giving outstanding high-temperature oxidation stability, load-carrying capability, shear stability and water resistance across a recommended operating range of -20°C to 170°C. The grease meets the claim of DIN 51825:2004-06 KPF 1 P -20. A proprietary extreme-pressure package with solid additives delivers load-carrying capability without degrading thermal stability at high temperature, providing wear and EP protection up to 170°C without rapid oxidation of the anti-wear or EP additives, aided by very good anti-oxidation protection from the advanced polyurea thickener. Its NLGI 1 consistency gives excellent pumpability in centralised grease systems and long distribution lines, with mobility down to 0°C and, depending on system design, performance stretching to -20°C. Effective water resistance keeps the grease in place and protects bearings against corrosion in the presence of water. Mobil Polyrex 461 EP is suitable for medium to slow speed plain or roller bearings exposed to high temperatures, severe load and shock loading, in industrial applications such as steel mill continuous casters and roll mills, wood pellet mills, and cement, glass, mining and chemical plant equipment.

Applications

• Medium- to slow-speed plain or roller bearings exposed to high temperatures, severe loads and shock loading, in industrial applications such as steel-mill continuous casters and roll mills, wood-pellet mills, and cement, glass, mining and chemical plant equipment.

Performance & benefits

• A proprietary extreme-pressure package with solid additives provides load-carrying capability without degrading the grease's thermal stability at high temperatures, giving a high level of wear and extreme-pressure protection up to 170°C without rapid oxidation of the anti-wear or EP additives.
• The advanced polyurea thickener gives very good anti-oxidation protection.
• The NLGI 1 consistency grade gives excellent pumpability in centralised grease systems, suitable for long distribution runs with very good mobility down to 0°C, and can stretch performance down to -20°C depending on the central system's design.
• Effective water resistance keeps the grease in place, and corrosion prevention protects bearings in the presence of water.