1.The applications of FY400 crawler pneumatic water well drilling rig ·civil engineering drilling ·geothermal drilling ·drilling with large diameter and deep drilling footage ·Its fast, flexible and efficient 2. The specifications of FY400 crawler pneumatic water well drilling rig Model FY400 Gross weight T 8.7 Dimension mm 5050*2100*2800 Aperture mm 140-325 Drilling depth m 400 Feed stroke mm 6000 Travel speed km/h 2.5 Grade ability max. 30° Rising height from ground mm 250 Wind pressure mpa 1.7-3.5 Air consumption m³/min 17-35 Engine power kw 95 Rotary speed rpm 45-75 Rotation torque n.m 8500-10000