Cummins Diesel Engine Driven Portable Rotary Screw Compressor 1.20 years service life 2.Big rotor big bearing ... 3.SKK air end Cummins Diesel Engine Driven Portable Rotary Screw Compressor Air endhigh-efficiency, reliable, energy saving, easy to operate and ... engine, like the Cummins, Steyr, Yuchai and so on. Strong power, reliable operation, fuel saving and low-level emissions and noise ...