Castrol Optipit - Rolling and sliding bearing lithium grease with MFT - 3710

Castrol Optipit - Rolling and sliding bearing lithium grease with MFT - 3710

Castrol Optipit - Rolling and sliding bearing lithium grease with MFT - 3710


Castrol Optipit™ is a lithium soap based grease with an extremely high viscosity base oil containing the advanced Microflux Trans (MFT) additive package. The Microflux Trans additive technology provides optimum wear protection and an extremely low coefficient of friction even under extremes of pressure, vibration, shock loads, at high or low speeds or varying micro-smoothing of the friction surfaces. Under severe load, components of the Microflux Trans additive combination are activated and diffuse into the surfaces initiating an improvement of their friction characteristics through plastic deformation. The organic reaction products become a component of the tribopolymer system. Unlike the case with conventional lubricants, the tribopolymers formed by Microflux Trans are long-chained compounds with excellent lubricity and adhesion. The load carrying area is improved, a hydrodynamic lubrication film is easier to maintain. This unique physio-chemical reaction achieves a non-sacrificial micro-smoothing of the friction surfaces.



Optipit is especially suited for rolling and sliding bearings in dusty and humid environments and builds up a stable grease collar at the bearing edges, supporting the seals to prevent penetration of dirt, water and other contaminations. Optipit enables a hydrodynamic lubricating film even at low speeds. Developed for lubrication of anti-friction and plain bearings running at low speeds requiring extremely high oil viscosity and operating in wet and dusty atmospheres found in applications such as:

  • mining, especially open-pit mining
  • the steel industry/tube mills under heavy shock loads and vibration
  • equipment exposed to sea water, in harbours, and on ships and drilling platforms



  • Water and dirt repellent – the grease is still effective in adverse environments
  • Extraordinary load bearing capacity – extremely extended operating period even under high loads and optimum wear protection
  • Establishment of a protective layer of MFT – this additive system can effectively increase the load bearing area, thus reducing unit pressures, operating temperatures and wear, increasing service life of both parts and lubricant
  • Improved bearing surfaces for longer service life result from the ‘running in’ effect of MFT
  • Extremely low coefficients of friction – energy savings and reduced noise levels
  • Pumpable in central lubrication systems
  • Good adhesion due to high oil viscosity – the film coating stays on the surface
  • Reduction of running-in period – suitable for lifetime lubrication applications


ISO Viscosity Grades and pack sizes available
Castrol Optipit - 20x400g Cartridges, 5kg Tins, 50KG KEG

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