DTH Hammer

DTH Hammer
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Introductions

WC series DTH hammer, adopting valveless structure and with low air consumption, can be used on various drill rods and drilling rigs. It can be widely applied in core (sample) exploration of mineral geology, hydrogeology and engineering geology.

Parameters
Type Hole Diameter (mm) Tool Diameter (mm) Air Consumption (m3/min) Air pressure (MPa) Power (J) Frequency (HZ) Length (mm) Weight (kg) Out Flat Rods (mm)
WC56 65 56 3-4 0.5-0.6 50-60 12-14 910 12 Φ50
WC70 75-95 66 3-4 0.5-0.6 60-80 12-16 1030 16 Φ50, 60
WC85 95-110 85 3-4 0.5-0.6 80-120 10-16 1030 23 Φ60, 73
WC110 115-140 102/106 4-6 0.5-0.7 180-420 12-15 1200 42 Φ73, 89
WC130 135-150 124 4-6 0.7-0.1 160 18 923 60 Φ73, 89
WC150 150-180 142 6-10 0.5-1.2 200-580 12-15 1230 68 Φ89, 114
WC200 205-250 185 18-21 0.5-1.7 450-800 10-14 1400 118 Φ114, 127
Product maintenance
  • Clean all spare parts thoroughly with clean diesel oil.
  • Check the nicks, burrs and cracks on piston surface, polish with sandpaper or replace it.
  • Check the nicks, burrs and cracks on inner cylinder and inner hole of bushing, polish with sandpaper or replace them.
  • Check the cracks and abrasions of spline sleeve. Install the spline sleeve on a new drill bit for torsion test and replace it if the loosening is more than 5mm.
  • Check the nicks, burrs and cracks on cylinder base and core tube. Polish irregular shapes and replace them if necessary.
  • Check the cutting transverse seam and cracks of O shaped sealing ring, replace it if necessary.
  • Check the abrasions and damages of upper check valve. Check whether the check valve can slide freely around the cylinder base and core tube and check the sealing performance with upper joint.
  • Measure the fit clearance between inner hole of piston and the top of core tube. If the fit clearance is more than 0.35mm, measure again with a new piston. If the fit clearance is still more than 0.35mm, replace core tube to meet requirements.
  • Measure the fit clearance between piston and inner cylinder. If the clearance is more than 0.2mm, measure again with a new piston. If the clearance is still more than 0.2mm, replace parts to meet requirements.
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