Grease «ZHT-72» (TU 38.101345-77) is an organosilicon liquid solidified with calcium soap of stearin and acetic acids. It contains an antioxidizing additive and the additive reducing viscosity at negative temperatures. It is cold-resistant; does not call swelling of rubber consolidations of autobrake devices.
It is efficient at temperature-60 … +120°С. The Scope: brakes of locomotives at a rubber friction on metal. Substitutes: ЖТ-79Л, ЦИАТИМ-221.
Appearance and colour: —
Viscosity effective, Па.с, at 0°С, no more: 220
Viscosity effective, Па.с, at-40°S, no more: —
Strength at 20°С, the Pas, not less: 830
Drobfall temperature, °С, not more low: 170-200
Colloid stability at loading, %, no more: 10
The content of free alkali in recalculation on NаОН, %, no more: —
Penetration at 25°С, mm, 10-1: 310-340
The content of water, %, no more: —
Vaporability at 150°С, %, no more: —
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.