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.