The grease VNIINP-286 (TOR 38.101181-77) is oil of hydrocracking and reductive isomerization. It is thickened with lithium soap of stearin acid and acids of the hydrogenated castor oil. It contains antioxidizing and antiscuffing additives.
The grease VNIINP-286 possesses low colloid stability, high mechanical stability and water resistance, surpasses all other greases for gyroscopes in frost resistance. It is efficient at temperatures from -60 °С…+120 °С. The application: gyroscope rotor bearings. A substitute product is VNIINP-274.
Appearance and color: —
Effective viscosity, Pas, at 0 °С, not more than: 110
Effective viscosity, Pas, at -30 °C, not more than: —
Strength at 20 °С, Pas, not less than: 500-600
Drop temperature, °С, not lower than: 170
Colloid stability under load, %, not more than: 35
The content of free alkali in recalculation on NаОН, %, not more than: —
Penetration at 25 °С, mm, 10-1: 210-250
Evaporation at 150 °С, %, not more than: —
Data on operational temperatures represent values, which are guided by a structure of lubricants, and also on a scope and technology of use. Depending on a kind of mechanical-dynamic loading lubricants change the consistence, conditional viscosity or viscosity at various temperatures, pressure and duration of operation. These changes of indicators can affect work of components.