... :2000 certificate Air cooled screw air compressor, Industrial air compressor, Electric air compressor, Belt driven air compressor, Rotary screw air compressorBelt driven/ ... name-brand airend, Special motor for low rotation speed air compressor, with SKF bearing, isolation rate is F, the ... 95%; the rotors are the third generation for 5:6, low noise, low energy consumption and low maintenance charges ...