Grease OKB-122-7 (GOST 18179-72) is a blend of organ silicon liquid and petroleum oil thickened with lithium stearate and ceresin. The main performance characteristics of OKB-122-7 grease are: good conservation, antiwear properties, water resistance, satisfactory coloidal and chemical stability. It is a multipurpose a conservation grease. Grease is efficient within the temperature range from -40 to + 100°С. It is used in bearings of aircraft electric vehicles, and jig boring machines, precision bearings, precision mechanisms, electric machines.
Physical and chemical indicators of OKB-122-7 grease (GOST 18179-72)
Name of the indicator | Norm GOST (TC) |
---|---|
Appearance | Homogeneous ointment with smooth structure of light yellow to light brown color |
Effective viscosity, Pa·s | |
at -50 °C and mean gradient of strain rate 1000 s-1, not less than | 1,2 |
at - 30 °C and an average gradient of 10 s-1 strain rate, not more than | 1800 |
Colloidal stability of of allocated oil, %, not more than | 10,0 |
Shear strength, PA, at 50 °C, not less than | 150 |
Mass fraction of free alkali calculated as NaOH, %, not more than | 0,03 |
Content of water | Absence |
Corrosive influence on metals | Withstands |
Content of mechanical impurities | Absence |
Evaporability at 100°C, 1H, %, not more than | 3,5 |