VNIINP-231 grease (TU 38.1011220-89) is an organic-silicon blend thickened with technical carbon DG-100. The main performance characteristics of VNIINP-231 grease: in terms of properties, it occupies an intermediate position between greases and semi-fluid pastes. The grease is characterized by frost resistance. It is efficient at residual pressure of 666.5 Pa and in the temperature range from -60 to + 250°C. It is used in close worm and screw rolling and sliding bearings, in threaded connections.
Physical and chemical indicators of VNIINP-231 grease (TU 38.1011220-89)
Name of the indicator | Norm GOST (TC) |
---|---|
Appearance | Homogeneous ointment of black color |
Effective viscosity, Pa-s | |
at 50°C and mean gradient of strain rate 1000 s-1 | 1,0 |
at -51°C and mean gradient of strain rate 10 s-1, not more than | 400 |
Tensile strength at 80°C, Pa, at least | 150 |
Colloidal stability at a load of 3H, % of allocated oil, not more than | 7,5 |
Evaporability at 200°C, %, not more than | 5,0 |
Corrosion test | Withstands |
Содержание воды, %, не более | 0,12 |
Penetration at 25 °C, 0.1 mm 10-1 | Not normalised |