Low Pressure DTH Hammers

Our DTH hammer and bits are compatible with CIR, DHD,QL,SD,Mission, etc. series of Atlas and Sandvik etc. They are with high efficiency, low failure rate and long service life. Even for all kinds of high hardness, high abrasive rocks and other harsh conditions, our drilling tools can also realize efficient and economical drilling.

◆Type and Technical Specification of Low Pressure DTH Hammers

Item	GL65B	GL70	GL76	GL80	GL90	GL90-1	GL110	GL150	GL170
Drilling Dia.(ф/mm)	68-70	72-74	74-76	80-82	90-130	90-130	110-150	150-185	170-250
Hammer Length(mm)	745	803	766	796	796	796	838	908	1023
Outside Dia.(ф/mm)	61.2	67.2	67.2	72	80.2	80	98	137	156
Weight(kg)	13	14	15	17	20	20	30	75	90
Working Pressure(Mpa)	0.5-0.7	0.5-0.7	0.5-0.7	0.5-0.7	0.5-0.7	0.5-0.7	0.5-0.7	0.5-0.7	0.5-0.7
AirConsumption(M3/Min.)	2.5	3	3	5	6	5.5	11	17	19.5
Torque(N.M)	51	70	75	81	110	120	180	340	420
Impact Frequency (Times/Min.)	≥810	≥810	≥810	≥800	≥820	≥820	≥830	≥800	≥790
Connection 1	M42×10×1.5P	DZ50	M48×10×2P	M48×10×2P	M48×10×2P	M48×10×2P	API 2 3/8REG	API 3 1/2REG	API 3 1/2REG
Connection 2	ф37-4	ф43-6	ф44-4	ф50-6	ф54-6	ф54-6	ф65-6	ф90-6	ф98-6