DTH hammer:
1,high efficient/superior function
2,high quality
3,trinity design in joint
4,CE certificate
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Dth hammer is one of our main products.It is durable for being produced with advanced craftwork and good material.It also has the following feartures
1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption
2. Smooth performance and long service life
3. Low problem rate and easy to maintenance
4. Easy to depart bit from hammer
5. Interchangeable with dth bit and drill pipe
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DTH hammer type | HD35 | HD45 | HD55 | |
Length(less bit) | 930mm | 1030mm | 1170mm | |
Weight(less bit) | 24.5kg | 39.2kg | 71.5kg | |
External diameter | Φ81mm | Φ99m | Φ125m | |
Bit shank | IR3.5”COP34 | COP44/DHD340 | COP54/DHD350R | |
Hole range(mm) | Φ90-110 | Φ110-135 | Φ135-155 | |
Connection thread
| API 2 3/8” Reg. | API 2 3/8” Reg. | API 2 3/8” Reg. | |
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| 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 | Φ125mm | Φ142m | Φ180m | |
Bit shank | HD55C DHD350Q | COP64/DHD360 | COP84/DHD380 | |
Hole range(mm) | Φ135-155 | Φ155-190 | Φ195-254 | |
Connection thread
| API 2³/8” Reg. | API 2³/8” Reg. | API 41/2” Reg. | |
API 31/2” Reg. |
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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 | |
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