... uses oil-free lubrication, its structure is horizontal, 4-column, 4-stage compression, water cooling typ Main paramenters of ... *1800;Overall weight(kg): 3500KgParameters of electric motor:Model No.: YB2-280S-4;Rated power: 75KW;Rotation speed: 1480r ... solenoid, site instrument panel, system pressure converter, electric motor and etc. . Nitrogen Compressor For Chemical Plant And Electric Power Station