Down the Hole Hammers

Down-the-hole (DTH) hammers are high-efficiency percussion drilling tools engineered for deep, straight holes in hard rock and compact ground where surface hammering loses effectiveness. Installed directly behind the drill bit, the piston hammers the bit with each stroke so impact energy is delivered at the bottom of the hole—maximizing penetration and reducing drill string stress.

DTH systems are common in mining, quarrying, water well and geothermal drilling, blast-hole and anchor hole drilling, and tough civil projects requiring large-diameter or deep bores. Choose DTH hammers by bore diameter, rock hardness, required penetration rate, and rig compatibility. Key specs include operating air pressure, required airflow, blow energy, piston/bore size, and shank/bit type. Bit selection (button, cross, or carbide insert patterns) and correct flushing (air or air/water) are critical for performance and hole cleaning. DTH Drills are ideal for mining, quarrying, water wells, geothermal, and blast/anchor applications.