Grease ZHT-79L (TU 0254-002-01055954-01) is a railway grease. It is a mix of an organosilicon liquid and isoparaffin oil solidified with lithium stearin. It is contains an antioxidizing additive and softener. The basic operational characteristics:
Grease ZHT-79L does not call rubber swellings
Grease ZHT-79L hav good antiwear characteristics
It is frost-resisting and waterproof grease.
Grease ZHT-79L efficient at temperature-60 … +120°С.
The scope is brakes of locomotives and cars.
Appearance and colour: Homogeneous ointment from light yellow to light brown colour
Viscosity effective, Па.с, at 0°С, no more: —
Viscosity effective, Па.с, at-40°S, no more: —
Strength at 20°С, the Pas, not less: —
Drobfall temperature, °С, not more low: —
Colloid stability at loading, %, no more: —
The content of free alkali in recalculation on NаОН, %, no more: —
Penetration at 25°С, mm, 10-1: 30-80
The content of water, %, no more: 2
Vaporability at 150°С, %, no more: —
Solubility of grease in a mix of gasoline and benzene, %, no more: 20
Data on operational temperatures represent values which are guided by a structure of lubricants, and also on a scope and technology of use. Depending on a kind of mehaniko-dynamic loading lubricants change the consistence, conditional viscosity or viscosity at various temperatures, pressure and duration of operation. These changes of indicators can affect work of components.