DHD380 Quarry Mining High Air Pressure DTH Hammer
DHD SERIES DTH Hammers: DHD3.5 / DHD340 / DHD350 / DHD360 / DHD380
Design Highlights
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DHD series is a valve-less type hammer designed for high performance at low operating air pressure.
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Suitable bits have a strong robust design without foot valve to withstand heavy duty application.
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DHD series hammers maximize energy output and reduce service requirements.
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All critical internal components are heat treated under strict control to maximize tool longevity.
Applications
Widely used for mine, quarry, road construction for drilling and blasting work, water well drilling, slope protection, anchoring, etc.
DTH Hammer Series Available:
- High pressure series
- Medium pressure series
- Low pressure series
- High efficiency high pressure series
- Reverse circulation series
General Technical Specifications
| Type |
Model |
Length (mm) |
Weight (kg) |
External Dia. (mm) |
Hole Range (mm) |
| 3.5 inch |
DHD3.5 |
930 |
25 |
Φ82 |
Φ90-110 |
| 4 inch |
DHD340 |
1030 |
39 |
Φ99 |
Φ110-135 |
| SD4 |
1084 |
40.5 |
Φ99 |
| QL4 |
1097 |
41 |
Φ99 |
| Mission40 |
1005 |
40 |
Φ99 |
| 5 inch |
DHD350 |
1214 |
76.5 |
Φ125 |
Φ135-155 |
| SD5 |
1175 |
72.5 |
Φ125 |
| QL5 |
1147 |
73 |
Φ125 |
| Mission50 |
1110 |
68.5 |
Φ125 |
| 6 inch |
DHD360 |
1248 |
100 |
Φ142 |
Φ155-190 |
| SD6 |
1261 |
100 |
Φ142 |
| QL6 |
1212 |
95 |
Φ146 |
| Mission60 |
1161 |
90 |
Φ146 |
| 8 inch |
D85 |
1492 |
188 |
Φ180 |
Φ195-254 |
| SD8 |
1463 |
192 |
Φ180 |
| QL8 |
1465 |
182 |
Φ180 |
| Mission80 |
1338 |
176 |
Φ180 |
DHD380 DTH Hammer Detailed Parameters
| Hammer Length without bit: |
1492 (mm) |
| Top sub thread: |
API 4 1/2" REG PIN |
| Outside diameter: |
180 (mm) |
| Weight: |
190 (KG) |
| Bit diameter: |
195-254 (mm) |
| Working Pressure: |
15-33 (Bar) |
| Air consumption: |
26-34 (M3/min) |
| Bit shank: |
DHD380 |
Frequently Asked Questions
Q1: What are the primary applications for DHD380 DTH Hammers?
DHD380 hammers are widely used in mining, quarrying, road construction, water well drilling, slope protection, and anchoring projects.
Q2: What is the main design advantage of the DHD series?
The DHD series features a valve-less design and a robust structure without a foot valve, allowing for high performance even at low operating air pressures.
Q3: How is the durability of the internal components ensured?
All critical internal components undergo strict heat treatment control to maximize tool longevity and withstand heavy-duty applications.
Q4: What is the recommended working pressure for the DHD380?
The DHD380 DTH hammer operates efficiently within a working pressure range of 15 to 33 Bar.
Q5: What range of hole diameters can the DHD380 handle?
The DHD380 is suitable for drilling holes ranging from 195mm to 254mm in diameter.
Q6: What type of top sub thread does the DHD380 use?
The DHD380 hammer is equipped with an API 4 1/2" REG PIN top sub thread.
KAT DRILLING
