Compressors Capacities from 1200 up to 6000 m³/hr, operating pressure up to 10 bar (g). The drive is effected by use of electric motors over flexible couplings. The types from X-RO 600 to 920 have two stages and motors. The cooling and lubrication takes place by oil injection into the compressor stage. There-cooling of the lubrication oil takes place in the water-cooled oil cooler.