Crawler Drilling Rig Machine Underground Rock Drilling Equipment for Hydropower Tunnel Mine Bolting Operation Anchoring Drilling Rig. Compact Tunnel Design: Designed for narrow lanes with 2.5m aisle width and turning radius of 2397/4280mm. High Operating Range: Maximum operating area reaches 30 sqm with width 5697mm and height 5400mm. Powerful Engine Performance: Equipped with Yuchai engine delivering 55.8kW power and 310Nm torque. Advanced Hydraulic System: Manual valve control with 200 bar system pressure and 180L oil tank capacity. Comprehensive Safety Protection: Features leakage, overload, and short circuit protection in electrical system. Customizable Voltage: Voltage can be customized according to customer requirements.