Down-the-hole hammer for DTH drill bits
DTH (Down-the-Hole) hammers produce a powerful hammering action to break and crush stone or other fine materials, enabling you to work more efficiently.
DTH hammers can be used in many different applications including but not limited to heavy construction, mining, oil and gas, quarries, and water wells.
The correct choice of down-the-hole hammer depends mainly on the hole size and the type of rock formation. Ideally, the hammer should match the hole size as closely as possible, leaving enough space for cuttings to escape.
Suitable hole diameters for drilling with a down-the-hole hammer range from 90 mm (3.5”) to 254 mm (10”). Smaller holes are usually drilled with a top hammer drill, while larger holes are drilled with a rotary drill.
| Hammer Length without bit | 890 mm |
| Top sub thread | API 2 3/8"REG BOX |
| Outside Diameter | 112 mm |
| Weight | 48.5 kg |
| Bit Diameter | 130-175 mm |
| Working Pressure | 5-10 bar |
| Air consumption | 7-12 m³/min |
| Bit Shank | CIR110/CIR130 |
Usage Features：
(1) Ensure the working air pressure. When the air pressure is lower than the specified value, the impact work and impact frequency will decrease significantly, which will not only fail to effectively break the rock, but also affect the timely discharge of rock chips out of the hole.
(2) Supply sufficient air volume. The air supply volume should be considered from two aspects: the air consumption of the down-the-hole hammer itself and the air return speed required for chip removal.
(3) Select the optimal speed. If the speed is too high, the distance between the chisel marks caused by two adjacent impacts will be too large, and the rock in between will not easily collapse; if the speed is too low, the impact work cannot be fully and effectively utilized. Under the conditions of certain rock properties and impact frequency, the optimal speed should be selected.
(4) Apply appropriate drilling pressure. It is advisable to avoid rebound when the down-the-hole hammer is working.
(5) Maintain reliable lubrication to reduce the wear of the piston and cylinder.
(6) Keep the air path clean and unobstructed.
(7) When stopping drilling, do not stop the air supply immediately to prevent the rock chips that have not been discharged from the hole from falling back to the bottom of the hole and causing a "drill clamping" accident.
Down-the-hole hammer for DTH drill bits
DTH (Down-the-Hole) hammers produce a powerful hammering action to break and crush stone or other fine materials, enabling you to work more efficiently.
DTH hammers can be used in many different applications including but not limited to heavy construction, mining, oil and gas, quarries, and water wells.
The correct choice of down-the-hole hammer depends mainly on the hole size and the type of rock formation. Ideally, the hammer should match the hole size as closely as possible, leaving enough space for cuttings to escape.
Suitable hole diameters for drilling with a down-the-hole hammer range from 90 mm (3.5”) to 254 mm (10”). Smaller holes are usually drilled with a top hammer drill, while larger holes are drilled with a rotary drill.
| Hammer Length without bit | 890 mm |
| Top sub thread | API 2 3/8"REG BOX |
| Outside Diameter | 112 mm |
| Weight | 48.5 kg |
| Bit Diameter | 130-175 mm |
| Working Pressure | 5-10 bar |
| Air consumption | 7-12 m³/min |
| Bit Shank | CIR110/CIR130 |
Usage Features：
(1) Ensure the working air pressure. When the air pressure is lower than the specified value, the impact work and impact frequency will decrease significantly, which will not only fail to effectively break the rock, but also affect the timely discharge of rock chips out of the hole.
(2) Supply sufficient air volume. The air supply volume should be considered from two aspects: the air consumption of the down-the-hole hammer itself and the air return speed required for chip removal.
(3) Select the optimal speed. If the speed is too high, the distance between the chisel marks caused by two adjacent impacts will be too large, and the rock in between will not easily collapse; if the speed is too low, the impact work cannot be fully and effectively utilized. Under the conditions of certain rock properties and impact frequency, the optimal speed should be selected.
(4) Apply appropriate drilling pressure. It is advisable to avoid rebound when the down-the-hole hammer is working.
(5) Maintain reliable lubrication to reduce the wear of the piston and cylinder.
(6) Keep the air path clean and unobstructed.
(7) When stopping drilling, do not stop the air supply immediately to prevent the rock chips that have not been discharged from the hole from falling back to the bottom of the hole and causing a "drill clamping" accident.
