TEP-15 oil (GOST 23652-79) is produced on the basis of aromatized residual products and distillates. The functional properties of the oil are improved due to antiwear and depressant additives. It is used as an all-season transmission oil for tractors and other agricultural machinery in temperate climate region. The operating temperature range of TEP-15 oil is from -20 to + 100°С.
Physical and chemical indicators of Transmission oil TEP-15 (GOST 23652-79)
Name of the indicator | Norm GOST (TС) |
---|---|
Viscosity: | |
Kinematic viscosity, mm2/s: | |
at 50°С | - |
at 100°С | 15,0 ± 1 |
Dynamic viscosity, PA, at -15 (-20)°С, not more than | 200 |
Viscosity index, not less than | - |
Temperature, °С: | |
flash point in the open crucible, not less than | 185 |
pour point, °C, not more than | -18 |
Acid number, mg KOH/g, not more than | - |
Mass fraction, %: | |
mechanical impurities, not more than | 0,03 |
water | Traces |
sulfur | ≤ 3,0 |
phosphorus, not less than | 0,06 |
water-soluble acids and alkalis | Absence |
Corrosion test on plates within 3 h: | |
steel and copper at 100°С | Withstands |
copper at 120°С, not more than | - |
Ash, % | ≥ 0,3 |
Acid number, mg KOH/g, not more than | - |
Stability on the device DK-NAMI (140°С, 20 h): | |
Change in kinematic viscosity at 100°С, not more than | 25,0 |
The rate of sediment in petroleum ether, not more than | 0,7 |
The tendency to foaming cm3, not more than: | |
at 24°С | - |
at 94°С | - |
at 24°С after testing at 94°С | - |
Tribological characteristics on ChShMT: | |
scuff index, N, not less than | - |
wear index at axial load 392N, (20±5°С), 1 h, mm, not more than | 0,55 |
Welding loading, N, not less than | - |
Colour, units of CNT, not more than | - |
Density at 20°C kg/m3, not more than | 950 |