... method, such as:a)When drilling hole in thicker (3050 m) fractured zone or congeries, rear power head connected with inner ... Drilling Hole Diameter (mm) φ130~2503.2 Drilling Hole Depth (m) 1503.3 Recommend dring rod (diameter×length) 89×2000 mm114 ... PowerMotor (kw) 55Disel engine (Hp) 703.11 Overall dimension (m) (L*W*H) 5.5*2*2.53.12 Total Weight (kg ...