Description
DTH hammer 1 medium and high air pressure etc 2 interchangeable with DTH bit etc 3 with Atlas copco products 4 high quality
Marteau fond de trou( DTH hammers/down the hole hammers )
We supply low, medium and high pressure downhole hammers. We have met the standard API and other standards. They are produced by a professional team in high quality materials.
The following advantages:1. Maximal energy for cutting, fast drilling speed, low air consumption;
2. Good performance and long life of the HD series thanks to high quality alloy steel materials;
3. Easy maintenance due to its internal structure easy to assemble and disassemble;
4. Easy to remove hammer cutter;
5. Interchangeable with drill and downhole drill rod.
DTH hammer type | HD35 | HD45 | HD55 | |
Length(less bit) | 930mm | 1030mm | 1170mm | |
Weight(less bit) | 24.5kg | 39.2kg | 71.5kg | |
External diameter | 81mm | 99mm | 125mm | |
Bit shank | IR3.5COP34 | COP44/DHD340 | COP54/DHD350R | |
Hole range(mm) | 90-110 | 110-135 | 135-155 | |
Connection thread | API 2 3/8 Reg. | API 2 3/8 Reg. | API 2 3/8 Reg. | |
API 3 1/2 Reg. | ||||
WorKing pressure | 0.5-2.5Mpa | 0.5-2.5Mpa | 0.5-2.5Mpa | |
Impact rate at 17 Bar | 28Hz | 27Hz | 25Hz | |
Recommended Rotation speed | 28r/min | 25-40r/min | 20-30r/min | |
Air consumption | 10bar | 80L/s | 100L/s | 1450L/s |
18bar | 1600L/s | 180L/s | 280L/s | |
24bar | 210L/s | 250L/s | 390L/s |
DTH hammer type | HD55C | HD65 | HD85 | |
Length(less bit) | 1160mm | 1248mm | 1487mm | |
Weight(less bit) | 70.00kg | 98.00kg | 188.00kg | |
External diameter | 125mm | 142mm | 180mm | |
Bit shank | HD55C DHD350Q | COP64/DHD360 | COP84/DHD380 | |
Hole range(mm) | 135-155 | 155-190 | 195-254 | |
Connection thread | API 2³/8 Reg. | API 2³/8 Reg. | API 41/2 Reg. | |
API 31/2 Reg. | ||||
Working pressure | 0.5-2.5Mpa | 0.5-2.5Mpa | 0.5-2.5Mpa | |
Impact rate at 17 Bar | 25Hz | 23Hz | 20Hz | |
Recommended Rotation speed | 20-30r/min | 15-25r/min | 15-20r/min | |
Air consumption | 10bar | 140L/s | 175L/s | 190L/s |
18bar | 280L/s | 3400L/s | 370L/s | |
24bar | 390L/s | 475L/s | 495L/s |