The AKR-7M-01 P U1 is a rotary vane compressor unit built around a 7.5 kW motor running at 1440 rpm, delivering compressed air at a discharge pressure of 10 bar-class from atmospheric intake. The unit is catalogued among components for metro rolling stock, where rotary vane machines are valued for their simple construction, smooth delivery and tolerance of continuous duty cycles; the same qualities serve general industrial compressed-air applications.
The stated installed life before overhaul is 12,000 hours, with a suction connection of 40 mm diameter and operation on standard 68-viscosity-class compressor oil. As a single-unit purchase, the compressor addresses rail depot maintenance organizations, rolling stock builders and industrial buyers needing a robust positive-displacement air source.
Rotary vane technology has few moving parts and no valves in the compression chamber, which translates into long intervals between interventions and straightforward field repair compared with reciprocating alternatives.
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