The grease VNIINP-270 (TOR 38.10164-76) is a mix of organic silicon liquid and a difficult ether. It is thickened with complex soda soap and contains an antioxidizing additive and a molybdenum disulfide.
The grease VNIINP-270 possesses low evaporation, high colloid stability, low water resistance, good antiscuffing properties. It is efficient in vacuum to 10 micro Pa and at temperatures from -60 °С…+80 °С.
The grease VNIINP-270 is used in ball-bearings of low-power electric motors with frequency of rotation to 10000 mines-1, bearings of electro motors of potentiometers and gyroscopes. A substitute product is VNIINP-257.
Appearance and color: —
Effective viscosity, Pas, at 0 °С, not more than: 40
Effective viscosity, Pas, at -40 °C, not more than: —
Strength at 20 °С, Pas, not less than: 150
Drop temperature, °С, not lower than: 175
Colloid stability under load of 300 g, %, not more than: 16
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.