High-Wear Resistance Drilling Tool for Medium-to-Heavy Duty Operations
Exclusively engineered to pair with 4” DTH hammers (e.g., DHD340, COP44, Mission40, QL40, SD4), our DTH bits deliver reliable performance for 110mm–140mm boreholes—matching the optimal drilling range of 4” DTH hammer systems. Designed for durability and efficiency, these bits address the core needs of industries relying on 4” hammers, excelling in tough formations while ensuring seamless compatibility.
Key Compatibility & Specifications
Built to industry standards, these bits fit most 4” DTH hammer models (DHD, COP, BR, QL series) via standardized spline drives and shank designs. Critical specs include:
Borehole Diameter: 110mm–140mm (4.33”–5.51”), aligned with the maximum/minimum bit size range of 4" hammers.
Carbide Buttons: Φ14–Φ16mm spherical/ballistic buttons (6–9 front buttons + 8 gauge buttons), heat-treated for 30% longer wear resistance in abrasive rock.
Face Designs: Customizable to formations—flat faces for hard/fractured rock (granite, basalt), concave faces for deep-well stability, convex faces for soft-to-medium strata (sandstone, limestone).
Optimized for the medium-to-heavy duty performance of 4” DTH hammers, these bits shine in:
Mining & Quarrying: Perfect for large blast hole drilling in open-pit mines and quarries, cutting through hard ore deposits and abrasive limestone with minimal bit replacement.
Water & Geothermal Drilling: Ideal for deep domestic/industrial wells and geothermal heat pump projects, with enhanced airflow channels to clear debris in mixed rock.
Civil & Infrastructure: Used for foundation piling, road construction anchoring, and tunnel pre-drilling—compatible with crawler-mounted rigs for high-intensity on-site operations.
Trusted by global drilling contractors, our DTH bits for 4” DTH hammers balance cost-effectiveness and reliability. Contact us for custom button layouts or bulk ordering details.
