The grease VNIINP-274 (GOST 19337-73) is oil of hydrocracking and reductive isomerization. It thickened with lithium soap of stearin acid and acids of the hydrogenated castor oil. The grease VNIINP-274 contains antioxidizing and antiscuffing additives.
It possesses low evaporation, high thermal and mechanical stability, frost-resistance. The grease VNIINP-274 is efficient in vacuum and at temperatures from -80 °С…+120 °С.
Application: small-sized precision ball bearings and low-power reducers with frequency of rotation of 15000-30000 mines-1. A substitute product is VNIINP-286.
Appearance and color: —
Effective viscosity, Pas, at 0 °С, not more than: 80
Effective viscosity, Pas, at -40 °C, not more than: —
Strength at 20 °С, Pas, not less than: 270-370
Drop temperature, °С, not lower than: 190
Colloid stability under load of 300 g, %, not more than: 18
The content of free alkali in recalculation on NаОН, %, not more than: —
Penetration at 25 °С, mm, 10-1: —
Evaporation at 150 °С within 1 hour, %, 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.