Model:SD12, DHD1120,NUMA120,NUMA125
 
ROS120-SD DHD hammers are improved in many projects and widely used for varies applications, including overburden casing drilling and water well drilling.
 
Features:

1. Valveless air distribution ensures smooth working.
2. Piston design and harden wear part ensure strong wear-resistance
3. Minimize the energy loss, high penetration, lower air and oil consumption
4. Fewer internal parts minimize the maintain and replace the part requirement

DTH hammer is used for drilling holes through a wide range of rock types, the variety of which continues to extend well beyond the original conception of early blast hole drilling.

Down-the-Hole refers to where the hammer action occurs when compared to drifter hammers, which hammer on top of the drill string. The DTH hammer piston always makes direct contact with the drill bit and there is generally no loss of transmitted energy as the hammer drills deeper, as is the case with drifter (top hammer) rigs.

Roschen offers a wide range of DTH hammers suitable for a variety of drilling operations. Our Down the Hole hammers provide the most versatile and cost effective rock drilling method.