Cluster dth hammer, down the hole bit, down the hole hammer drill rig(China manufacturer)

Cluster Down The Hole Hammer

  Advantages:

  Drilling Diameter Φ600mm~3000mm.Use low air pressure in 1.0~1.8MPa,and in high impulse frequency,low cost,low maintenance cost.

Disadvantages:

  It cannot be fully covered, and there are many voids that are not equipped with hammerheads to break up the rock. The internal structure is complex and the stability is poor. For rocks with large cracks, there may be a risk of sticking the hammer.