At Enttu Mining Euipment.we provide a complete range of high-performance DTH (Down-the-Hole) hammers – the core power units for rock drilling, engineered to pair seamlessly with our DTH drill bits (hammer bits) across mining, quarrying, water well, and geothermal projects. Our hammer lineup covers industry-standard series, optimized for pressure, depth, and compatibility with global drilling systems.
High-air-pressure DTH hammer paired with tungsten-carbide button bit; friction-welded spline drive, API-standard threads, sizes 76-203 mm (3"-8"). Straight, fast, deep drilling for water-well, mining, quarry and geothermal projects.
Specifications & Key Points
Full size range: 3", 4", 5", 6", 8" hammers + matched bits in one PO
API 2-3/8" REG – 4-1/2" REG threads, NC26-NC50, global coupling compatibility
Spline cold-forged & friction-welded, 12 000 N·m torque rating
Button bits: spherical/parabolic tungsten inserts, 8-16 pcs, re-grindable 3×
E75/X95 steel, black or copperized finish, anti-galling threads
Working pressure 10-35 bar (150-500 psi), 350-1 200 cfm air range
We offer DTH hammers across all mainstream industry series, each designed to match specific air pressure, hole diameter, and rock formation needs:
- Low Air Pressure (LAP) HammersPaired with CIR-series drill bits (65–130mm diameters), ideal for small-scale mining, shallow drilling, and loose formations. Features compact design, low air consumption, and reliable performance for light-duty operations.
- Medium Air Pressure (MAP) HammersCompatible with DHD-series bits (90–203mm diameters), built for medium-depth mining, quarrying, and infrastructure drilling. Balances power and efficiency, suitable for most standard rig setups (e.g., 150–250 PSI systems).
- High Air Pressure (HAP) HammersMatches QL/SD/SP-series high-pressure drill bits (108–305mm diameters), engineered for deep drilling and hard rock conditions. Delivers high impact energy, extended service life, and optimized airflow for heavy-duty mining/geothermal projects.
- Durable Construction: Made with heat-treated alloy steel (chromium-molybdenum) for wear resistance and impact strength.
- Efficient Airflow Design: Optimized valve systems reduce air loss, boosting drilling speed and lowering energy costs.
- Universal Compatibility: Fits global DTH drill bit series (CIR/DHD/QL/SD) and major rig brands (Ingersoll Rand, Atlas Copco).
- Low Maintenance: Sealed components and replaceable parts (valves, pistons) minimize downtime and operational costs.
We combine industry-standard reliability with competitive pricing:
- Full series availability (no minimum order for standard models).
- Perfect pairing with our DTH drill bits (pre-matched for optimal performance).
- Responsive technical support to help select the right hammer for your pressure, bit size, and project needs.
Contact our team today to get a quote or discuss your DTH hammer requirements – we’ll ensure you get the right power unit to maximize your drilling efficiency.
