- Country of manufactureRussia
VNIINP-235 greasing (TU 38.101297-78 a-ism 1-4) — organic liquid, zagushchenny an organic thickener. Main operational characteristics of greasing of all-union scientific research institute
VNIINP-235 greasing — soft ointment of black-violet color. Greasing is semistructured. Differs in the low strength which are slightly increasing with temperature increase from 20 to 80 °C. At high temperatures VNIINP-235 greasing keeps sufficient strength. Viscosity of greasing poorly depends on deformation speed. Oil Otpressovyvayemost high. Greasing prevents teases and a svarivaniye of spheres at test on ChShM up to loadings about 10000 N (1000 kgfs). However diameter of a spot of wear in such tests already at small loadings reaches 0,6 — 0,8 mm. Thermal stability of the dispersive environment and a thickener, small change of strength when heating allows to apply greasing in the wide range of temperatures — from — 60 to 250 °C. About 4 kPa are recommended for superficial vacuum (30 mm of mercury.) . Heat-resistant VNIINP-235 greasing is used in the shaking rolling bearings working with small speeds, control systems of planes. According to other qualitative characteristics it is close to usual soap greasings.
Technical characteristics
| Name of an indicator | Norm in accordance with GOST (TU) |
|---|---|
| Appearance | uniform ointment of smooth structure of black color |
| Viscosity at -40 °C and an average gradient of speed of deformation 10 with-1 | 126 Pass |
| Viscosity at -50 °C and an average gradient of speed of deformation of 1000 with-1 | 1,3 Pass |
| Viscosity index | - |
| Ash-content in % | - |
| Content of mechanical impurity in % | - |
| Content of water | - |
| Reaction | - |
| Acid number in mg the GAME | - |
| Content of summary alkalis in terms of NAON in % | - |
| Content of water-soluble acids of alkalis | - |
| Evaporability at 200 °C during 1 h, % | 0,8 |
| Colloidal stability of the emitted oil, % | 6,5 |
| Strength at a temperature of 80 °C | 290 Pa |
| Test of the rusting action on metal plates | |
| steel 45 | maintains |
| Country producer | Russia |
