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[China]
Trade Verify
Address: No. 466 Zhongshan Road, Shijiazhuang, Hebei, China
Contact name:Nikolay
HEBEI MINETECH MACHINERY TECHNOLOGY CO., LTD |
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Verified Suppliers
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DHD 3.5 Down The Hole Rock Drilling Hammer DTH Hammer
Description:
“DTH” is the short for “Down The Hole” and sometimes it is also called “RAB” in some markets, “RAB” is short for “Rotary Air Blasting”.
Specifications:
| Technical Data | |||||
| Length(Without Bit) | 930mm | 1030mm | 1214mm | 1160mm | 1248mm |
| Weight(Without Bit) | 25.00 kg | 39.00 kg | 76.50 kg | 72.50 kg | 100.00 kg |
| External Diameter | 82mm | 99mm | 126mm | 126mm | 142/144/146/148mm |
| Bit Shank | DHD3.5 | COP44/DHD340 | COP54/DHD350R | ND55C/DHD350Q | COP64/DHD360 |
| Hole Range | 90-110 mm | 110-135 mm | 135-155 mm | 135-155 mm | 155-190 mm |
| Connect ion Thread | API 2 3/8”Reg | API 2 3/8”Reg | API 2 3/8”Reg API 3 1/2”Reg API 2 7/8”Reg | API 2 3/8”Reg API 3 1/2”Reg API 2 7/8”Reg | API 3 1/2”Reg
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| Working Pressure | 1.0- 1.5 Mpa | 1.2-2.0 Mpa | 1.3-2.3Mpa | 1.3-2.3 Mpa | 1.5-2.5 Mpa |
| Inpact Rate at 17 Bar | 28HZ | 27HZ | 25HZ | 25HZ | 23HZ |
| Reccfurended Rotation Speed | 25-40 "min | 25-40 r/min | 20-35 r/min | 20-35 r/min | 20-30 r/min |
| Air Consunption | 1.0Mpa :4.5 m3/min | 1.0Mpa :6m3/min | 1.0Mpa:9 m3/min | 1.0Mpa:9m3/min | 1.0Mpa :10 m3/min |
| 1.5Mpa:9.0m3/min | 1.8Mpa:10m3/min | 1.8Mpa:15m3/min | 1.8Mpa:15m3/min | 1.8Mpa:20m3/min | |
| 2.4Mpa:15m3/min | 2.4Mpa:23m3/min | 2.4Mpa:23m3/min | 2.4Mpa:28.5m3/mi | ||
Usage:
Rotation drill rig, air compressor and the “DTH drill string” are the essential unit for DTH drilling while the “DTH drill string” is always made up of DTH drill rods, DTH hammer and DTH bits. As one of key component, the DTH hammer acts as a role of converting the air pressure to the impact energy, simultaneously transferring impact energy and rotation force to DTH bits.
As specialist manufacturer and provider of DTH drilling tools, hereby we recommend our newest generation DTH hammer which is improved by absorbing art technology, selecting superior alloy steel and robust design. It is proved by more than thousands times of test that our newest DTH hammer has longer life , lower air consumption and 15% higher penetration speed compared the conventional DTH hammer in the market.
