
Heavy Duty Rock Drill Machine Mining Tunnel Large Hole Rock Drill Machine. Heavy Duty Rock Drill: Large hole rock drill machine designed for mining tunnels with 76-115mm drill hole diameter. Deep Drilling Capability: Achieves maximum drilling depth of 25m with impact frequency of 42-50 HZ and 20KW power. Global After-Sales Support: Online and on-site service with 100+ engineers across 10 global outlets for 24/7 support. Comprehensive Warranty: 18 months or 2000 impact hours warranty from shipment date covering mechanical defects. CE and ISO Certified: Product meets CE, RoHS, ISO 9001:2000, and ISO 9001:2008 international safety standards. Customizable Solutions: Custom drill rig configurations based on site conditions, rock hardness, and customer budget. Versatile Application: Suitable for underground mining, tunnel excavation, quarrying, and water well drilling projects. Fast Delivery Options: Standard in-stock tools ship in 7-15 days; customized equipment delivered in 45-60 days.