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QL60 DTH Hammer

QL60 DTH Hammer

We can offer you all kinds of DTH drilling tools and casing systems,welcome to visit us and send us your inquries.

DTH hammer

DTH hammer is an integral part of the downhole drilling rig and belongs to the working device of the downhole drilling rig. DTH hammer is divided into low-pressure DTH hammer,middle air pressure DTH hammer and high pressure DTH hammer.

The working principle of the DTH hammer: when the impact stroke begins, the piston and the valve are in the pole position, the pressure gas goes into the cylinder cavity through the radial hole of the valve cover and the valve seat, pushing the piston high-speed downward movement impact the drill bits. When the piston row to the bushing of the spline groove is closed, the lower chamber pressure began to rise, so the upper hole of the piston from the air distribution rod, so that the centre bore over pistons leaves the valve stem,make the upper chamber pass through the atmosphere, the pressure is reduced, the working stroke ends. When the piston impact the  drill tail, the valve due to its upper and lower pressure difference, starting reversing, the piston repeated return stroke movement.

DTH hammer 02.jpg

We supply many series of the hammer,QL60DTH hammer,COP34 DTH hammer,CIR90 DTH hammer,etc.

DTH hammer 03.jpg

We supply many series of the hammer,QL60DTH hammer,COP34 DTH hammer,CIR90 DTH hammer,etc.

DTH hammer typeHD35HD45HSD4HQL4
Length(less bit) mm930mm103010841097
Weight(less bit) kg25kg3940.541
External diameter mmΦ82mmΦ99Φ99Φ99
Bit shankDHD3.5COP44 DHD340SD4QL40
Hole range(mm)Φ90-110Φ110-135Φ110-135Φ110-135
Connection threadAPI 23/8" Reg.API 2 3/8"RegAPI 2 3/8"RegAPI 2 3/8"Reg

Working pressure1.0-1.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa28Hz27Hz27Hz27Hz
Recommended Rotation speed25-40r/min25-40r/min25-40r/min25-40r/min
Air consumption1.0Mpa4.5m3/min6.0m3/min6.0m3/min6.0m3/min


DTH hammer typeHD55HD55CHSD5HQL5
Length(less bit) mm1214116011751156
Weight(less bit) kg76.572.572.573
External diameter mmΦ125Φ125Φ125Φ125
Bit shankCOP54 DHD350RHD55C DHD350QSD5QL50
Hole range(mm)Φ135-155Φ135-155Φ135-155Φ135-155
Connection threadAPI 2 3/8"RegAPI 2 3/8"RegAPI 3 1/2"RegAPI 3 1/2"Reg
API 3 1/2"RegAPI 3 1/2"Reg

Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa25Hz25Hz25Hz25Hz
Recommended Rotation speed20-35r/min20-35r/min20-35r/min20-35r/min
Air consumption1.0Mpa9.0m3/min9.0m3/min9.0m3/min9.0m3/min


DTH hammer typeHD65HSD6HQL6HD85
Length(less bit) mm1248126112121492
Weight(less bit) kg10010095188
External diameter mmΦ142Φ142Φ146Φ180
Bit shankCOP64 DHD360SD6QL60COP84 DHD380
Hole range(mm)Φ155-190Φ155-190Φ155-190Φ195-254
Connection threadAPI 3 1/2"RegAPI 3 1/2"RegAPI 3 1/2"RegAPI 4 1/2"Reg

Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa23Hz23Hz23Hz20Hz
Recommended Rotation speed20-30r/min20-30r/min20-30r/min20-30r/min
Air consumption1.0Mpa10.0m3/min10.0m3/min10.0m3/min15.0m3/min


DTH hammer typeHSD8HQL8HSD10HN100
Length(less bit) mm1463146515021510
Weight(less bit) kg192182290288
External diameter mmΦ180Φ180Φ226Φ226
Bit shankSD8QL80SD10NUMA100
Hole range(mm)Φ195-254Φ195-254Φ254-311Φ254-311
Connection threadAPI 4 1/2"RegAPI 4 1/2"RegAPI 4 1/2"RegAPI 6 5/8"Reg

API 6 5/8"Reg
Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa20Hz20Hz18Hz18Hz
Recommended Rotation speed15-25r/min15-25r/min15-25r/min15-25r/min
Air consumption1.0Mpa15.0m3/min15.0m3/min22.0m3/min22.0m3/min


DTH hammer typeHD1120HSD12HN120NH125
Length(less bit) mm1900188019001900
Weight(less bit) kg480487485480
External diameter mmΦ275Φ275Φ275Φ275
Bit shankDHD1120SD12NUMA120NUMA125
Hole range(mm)Φ305-445Φ305-445Φ305-445Φ305-445
Connection threadAPI 6 5/8"RegAPI 6 5/8"RegAPI 6 5/8"RegAPI 6 5/8"Reg

Working pressure1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa16Hz16Hz16Hz16Hz
Recommended Rotation speed15-25r/min15-25r/min15-25r/min15-25r/min
Air consumption1.0Mpa30.0m3/min30.0m3/min30.0m3/min30.0m3/min

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