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ТУ У 24.6-30802090-029:2005
These oils are utilized as working liquids for hydrodynamic gears of diesel locomotives.
Guarantee period of storage - 5 years from the day of manufacture.
Index Name | GT-50А | Kinematic viscosity at 50°С, mm²/s | 11–15 | Viscosity index, not less than | 80 | Acid number, mg KON/g, not more than | 3,5 | Temperature, °С: |
| - flash temperature in an open crucible, not lower than | 165 | - solidification temperature, not higher than | -30 | Fraction of total mass, %, not more than: |
| - mechanical impurities | None | - water | None | - water-soluble acids and alkalis | None | Corrosive influence on metals | Withstands | Ash level, %, not less than | 0,5 | Stability against oxidation, %, not more than: |
| - changing of acid number | ±20 | - sediment after oxidation | 0,05 | Changing of volume of the UIM-1 rubber within 72 h at 125°С, %, not more than | ±6,5 | Foaming ability, not more than: |
| - inclination for foaming, cm3 | 50 | - foam stability, cm3 | 20 | Active elements’ fraction of total mass, %, not less than: | | - barium | – | - zinc | 0,15 | - phosphorous | – | Tribological characteristics on ChShM at (20±5)°С: |
| - deterioration index, mm, not more than |
| - at loading of 392 N | – | - at loading of 196 N | 0,60 | Density at 20°С, kg/m³ | Not more than 905 |
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