The grease VNIINP-246 (GOST 18852-73) is organic silicon liquid thickened with a pigment. It possesses high thermal stability, low evaporation, good antiscuffing characteristics and frost resistance. It is efficient in vacuum to 1.3·10-4 Pa and at temperatures from -60 °С…250 °С.
Application: bearings of a rolling and low-power tooth gearings. The substitute products: VNIINP-231, VNIINP-235.
Appearance and color: —
Effective viscosity, Pas, at 0 °С, not more than: 60
Effective viscosity, Pas, at -20 °C, not more than: —
Strength at 20 °С, Pas, not less than: 400-600
Drop temperature, °С, not lower than: —
Colloid stability under load of 300 g, %, not more than: 10
The content of free alkali in recalculation on NаОН, %, not more than: —
Penetration at 25 °С, mm, 10-1: 345-385
Evaporation at 200 °С within 1 hour, %, not more than: —
Mass fraction of free alkali, %, 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.