جهاز الحفر تحت الأرض Kaishan KJ311D

## Overview The Kaishan KJ311 is a purpose-built underground drilling rig designed for narrow-vein mining, small-scale tunneling, and underground construction projects. As part of Kaishan’s proven KJ series, this rig delivers reliable drilling performance in confined spaces where larger equipment cannot operate. It is ideal for face drilling, roof bolting, and blast hole drilling in hard rock conditions. ## Technical Features The KJ311 is equipped with a robust hydraulic boom and a high-frequency rock drill that ensures fast penetration and reduced bit wear. Its compact chassis and articulated steering allow easy maneuverability in narrow drifts and crosscuts. The rig features a 45 kW diesel engine with a hydraulic transmission system, providing smooth power delivery and low emissions. The drilling system supports both top hammer and down-the-hole (DTH) methods, offering flexibility for different rock formations. With a maximum drilling depth of 30 meters and hole diameter range of 33–76 mm, the KJ311 handles a wide range of underground drilling tasks. The operator’s platform is ergonomically designed for safety and comfort, with intuitive controls and excellent visibility. ## Applications The KJ311 excels in underground mining development, where it drills blast holes and roof bolt holes with precision. It is also suitable for tunnel excavation, underground utility installation, and rock reinforcement projects. Its compact size makes it ideal for narrow-vein operations and small-scale mining where access is limited. Contractors appreciate its low operating cost and high reliability. ## Why Choose Kaishan KJ311 Kaishan is a global leader in drilling equipment, and the KJ311 reflects decades of engineering expertise. The rig is built with high-quality components, including a durable boom, heavy-duty undercarriage, and reliable hydraulic system. It is easy to maintain, with readily accessible service points and long service intervals. Backed by Kaishan’s worldwide support network, the KJ311 ensures maximum uptime and productivity. Whether you are drilling in a mine or a tunnel, the KJ311 delivers consistent performance and exceptional value.