Архив рубрики: GREASES

ZHT-72

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°?. The Scope: brakes of locomotives at a rubber friction on metal. Substitutes: ??-79?, ??????-221.

Appearance and colour: —
Viscosity effective, ??.?, at 0°?, no more: 220
Viscosity effective, ??.?, at-40°S, no more: —
Strength at 20°?, the Pas, not less: 830
Drobfall temperature, °?, not more low: 170-200
Colloid stability at loading, %, no more: 10
The content of free alkali in recalculation on N???, %, no more: —
Penetration at 25°?, mm, 10-1: 310-340
The content of water, %, no more: —
Vaporability at 150°?, %, 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.

Contact grease

The grease «Contact grease» (TOR 38 USSR 201129-77) is used for greasing of overlays and joints a rail for the purpose of maintenance of their steady conductivity.
The basic operational characteristics:
Have low solubility, good colloid stability and water resistance. It is current-carrying. «Contact grease» is efficient in the range of temperatures from -40 °? to 60 °C.
Composition:
«Contact grease» is the mix of petroleum oils thickened with hydrated calcium soap SZHK. It contains graphite.

PGK-1

Grease plastic «PGK-1» (TU 3185-003-01055954-02) used for cranes of the operator.
Scope:
Used for greasing of cranes of the operator and cutout cock of diesel locomotives, electric locomotives. It is maintained at temperatures from-50°S to 100°? at pressure of damp air to 0,9 megapascal.