Gardner Denver rotary screw 60 Hz compressor packages range from 5 to 500 hp. Gardner Denver rotary screw 50 Hz compressors range from 2.2 - 500 kW, are designed to meet the highest requirements which the modern work environment and machine operators place on them. As a result, the Gardner Denver compressors are extremely energy efficient, quiet and reliable. Choose from a wide variety of rotary air compressors to fit all your needs from part load to full load applications, low purchase price to the greatest in energy efficiency, direct or belt driven to direct connected. These compressors continue to further strengthen Gardner Denver's success story - variable and fixed speed compressor technologies available.