KL511 drilling rig is equipped with heavy-duty hydraulic top hammer rock drill. With powerful rotary torque, shock power, adequate hole flushing and advanced control system. The frame of the drill rig is capable of rotating 0 - 180º and can cover 26.5 m2 with one single position. The power unit is placed at the end of the upper rotary rack, symmetric with drill boom and advancing beam. KL511 capable of producing effect of counterbalance.