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All-Union State Standards 19791-74 LZ-CNII is a sodium calcium lubricant intended for roller bearings of railroad cars’ axle-boxes at the temperature from minus 60°С to 100°С.Guarantee period of storage - 5 years from the day of manufacture.
| Index Name |
LZ-CNII |
| Appearance |
Homogenous ointment from light-yellow to dark-yellow colour |
| Temperature of drop falling, °С, not lower than |
135 |
| Penetration at 25°С, mm•10−1 |
200–260 |
| Efficient viscosity at 0°С and at the average gradient of the strain rate of 10 s−1, Pа•s, not more than |
420 |
| Proof strength at 50°С, Pа |
not less than 220 |
| Colloid stability, % of the secreted oil, not more than |
22 |
| Fraction of total mass, %, not more than: |
|
| - mechanical impurities |
None |
| - water |
0,4 |
| - free alkali re-calculated into NaOH |
0,2 |
| Evaporation at 100°С within 1 h, %, not more than |
7,0 |
| Corrosive influence on metals |
Withstands |
| Tribological characteristics on ChShM at (20±5)°С: |
|
| - critical loading, N, not less than |
922 |
| - deterioration index at loading of 196 N, mm, not more than |
0,55 |
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