1,for coal mining,ore exploration, 2,in construction drilling of railway,road,port,bridge 3,can be disambled if needy Drilling depth( m)200Drilling rod diameter.(mm)Φ50Head angle range360Movable cylinder stroke (mm)360Spindle speed( r/min)Positive rotation rate:70 176 268 382 648 926Reverse rotation rate: 40 154Spindle hole diameter( mm)Φ65Spindle output torque max(N.M)2140Spindle stroke(mm) ...