... mechanism 3.Easy maintenance of the hyd Crawler Hydraulic Rock DrillCharacteristic:1. Adopt electric enhance air filtrate diesel ... easy starting and maintenance, reliable capability.2. Adopt hydraulic working theory, highly energy sources switch, is a ... 3. free control on complex road, adopt taper drill pipe connect, double use life. High integration, ... -118-23.5Weight3300 kg Crawler Hydraulic Rock Drill