DTH hammer model 75

DTH hammer model 80

DTH hammer model 90

Used for seismic drilling on mountain, hill such complicate stratum.

The property and main technology parameter are as below:

  Parameter   07HM65A2000  07HM75A2000

drill diameter φ68mm φ76mm

 working condition pressure  0.5~0.7MPa 0.5~0.7MPa

gas consumption   2m3/min 2.5m3/min

impulse frequency   810/min 810/min

single impulse frequency  5.1kgm 7kgm

 measurements (d×l        φ57×777mm φ65×811mm