1 theoretical hole diameter Φ150 mm ~ Φ250 mm 2 theoretical drilling depth 140 m ~ 100 m 3 drilling angle 0 º~ 90 º 4 can be equipped with drill rod diameter Φ89(standard) Φ73 Φ102 Φ114 mm 5  drive-head rated output torque 6500 Nm 6 drive-head rated speed 10,20,38,40,48,55,70,76 96,110,140 r/min 7 drive-head lifting speed 0~1.4(adjustable),7,18,26 r/min 8 drive-head feeding speed 0~2.8(adjustable),14,36,50 r/min 9 drive-head rated pulling force / thrusting force 70/36kN 10 the stroke of drive-head 3400 mm 11 sub-mast slip stroke 900 mm 12 Power electric motor 55kW+18.5kW+2.2kW 13  Weight 6500 kg 14 Max.permissible gradient 25º 15 Overall dimensions(L×W×H) transport status:5690×2160×2050 mm Vertical working condition:3600×2460×5700 mm