The grease VNIINP-299 (TOR 38.101324-72) is organic silicon liquid thickened oil modified silica gel.
It possesses high colloid stability and adhesion. The raised viscosity and its small dependence on temperature change provide a smooth course and accurate fixation of mobile details of film apparatus and photo apparatus in the winter and in the summer.
The grease VNIINP-299 is efficient at temperatures from -30 °С…+50 °С. Application: mechanisms of scanning devices of film-and photo equipment. A substitute product is VNIINP-286.
Appearance and color: —
Effective viscosity, Pas, at 0 °С, not more than: 680
Effective viscosity, Pas, at -40 °C, not more than: —
Strength at 20 °С, Pas, not less than: 280
Drop temperature, °С, not lower than: —
Colloid stability under load, %, not more than: 3
The content of free alkali in recalculation on NаОН, %, not more than: —
Penetration at 25 °С, mm, 10-1: 310-340
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.