Tewatt compressor volvo or cummins engine, usa screw air-end Compressor stage:two Free air delivery(cfm/m3/min):700/19.5 Working pressure(psig/bar):290/20 Screw oil volume(l):100 Diesel engine model:volvo tad852ve Rated power(hp/kw):286/210 Rated speed/idle speed:1700/1350 Cylinders:6 Bore(mm):110 Stroke(mm):135 Compression ratio:17.5:1 Displacement(l):7.7 Emission class:eu iii/tier 3 Battery voltage(v):24 Fuel tank capacity(l):620 Connector size*qty:g3/4"x1, g2"x1 Wheel size*qty:6.50-16x4 Weight(kgs):4500 Dimension(mm):4500x1860x2050 Noise(db(a)):76±3 Working temp.():-20 ~50