A Low Pressure DTH Hammer, sometimes referred to as a low air pressure DTH hammer, is a down-the-hole hammer designed to operate efficiently under lower working air pressures, typically between 6–12 bar. Unlike high pressure hammers, low pressure models deliver a balanced combination of impact power and air consumption, making them ideal for:
Soft soil layers
Medium-hard rock formations
Water well drilling in rural or low-budget areas
Mining and quarry drilling with modest compressor capacity
Its structure ensures smooth drilling even when paired with a small portable air compressor, significantly lowering operational costs.
Product Overview
Dminingwell Low Pressure DTH Hammer
The Dminingwell Low Pressure DTH Hammer MW-Series is designed specifically for soft and medium formations, shallow wells, geothermal boreholes, and small construction projects that require excellent fuel economy and stable drilling performance.
Operating under 0.4–0.7 MPa, this hammer family is ideal for contractors looking for:
Low-cost drilling
High penetration in soft/medium rock
Reduced compressor requirements
Easy maintenance
Long service life
This series includes the following models:
MW50A, MWD56, MW60A, MW65A, MW76A, MW90A, MW90B, MW110A, MW150A
| Model | MW50A | MWD56 | MW60A | MW65A | MW76A | MW90A | MW90B | MW110A | MW150A |
|---|---|---|---|---|---|---|---|---|---|
| Length (mm) | 628 | 676 | 777 | 745 | 811 | 628 | 777 | 745 | 811 |
| Weight (kg) | 5.5 | 7 | 7 | 14 | 19.76 | 19.2 | 35.36 | 68.6 | |
| OD (mm) | 46 | 50 | 53 | 61 | 67 | 80 | 102 | 136 | |
| Bit Shank | CIR50 | D56 | CIR60 | CIR65 | CIR76 | CIR90 | CIR90 | CIR110 | CIR150 |
| Hole Range (mm) | 50 | 50–60 | 60 | 65 | 76–80 | 90–130 | 90–130 | 110–150 | 150–250 |
| Connection Thread | T38 × 8 | T38 × 8 | T42 × 8 | T42 × 8 | T48 × 10 | T48 × 10 | T48 × 10 | API 2 3/8'' REG BOX | T75 × 10 X25 BOX |
| Working Pressure | 0.4–0.7 MPa | 0.4–0.7 MPa | 0.4–0.7 MPa | 0.4–0.7 MPa | 0.5–1.0 MPa | 0.5–1.0 MPa | 0.5–1.0 MPa | 0.8–1.2 MPa | 0.8–1.2 MPa |
| Air Consumption | 3–4 m³/min | 3–4 m³/min | 4–5 m³/min | 4–5 m³/min | 5–7 m³/min | 5–7 m³/min | 5–7 m³/min | 9–15 m³/min | 15–17 m³/min |
| Tail Diameter | 29 | 29 | 35.5 | 36.5 | 43 | 54 | 54 | 64 | 89 |
Advantages
Why Choose a Low Pressure DTH Hammer?
1. Lower Air Consumption = Lower Cost
A major advantage of low pressure drilling tools is their ability to work perfectly without large compressors. This helps companies save:
Fuel
Maintenance costs
Transportation expenses
Many contractors choose low air pressure DTH hammers specifically to reduce daily drilling costs by 20–35%.
2. Excellent Performance in Soft to Medium RockThe hammer's internal structure and piston design deliver a stable impact frequency, making it highly suitable for:
Weathered rock
Limestone
Sandstone
Clay-mixed formations
Combined with the right DTH bits, especially button bits, the hammer ensures reliable penetration with minimal deviation.
3. Ideal for Lightweight Drilling RigsLow pressure DTH hammers pair well with:
Portable drilling rigs
Small water well drilling rigs
Tractor-mounted rigs
Geotechnical rigs
This flexibility makes it popular in developing regions where operators prefer affordable and versatile drilling equipment.
For a complete explanation of how DTH hammers work, see:
🔗 /what-is-a-dth-hammer-and-how-it-works
Applications
Low pressure hammers are widely used in:
✔ Water Well Drilling
A common choice for drilling wells between 50–200 meters in areas requiring economical solutions.
✔ Mining Drilling & Quarry Drilling
Perfect for blasting holes, small open-pit mining, and aggregate production where high-pressure compressors are not available.
✔ Geotechnical Investigation
Provides good penetration while keeping the drilling system lightweight and portable.
✔ Rural Construction & Irrigation Projects
Cost-effective and easy to operate for local contractors.
If your project involves medium-hard or hard rock, consider:
🔗 Mid Pressure DTH Hammer (MW-M3 / MW-M3K / MW-M4) →
🔗 High Pressure DTH Hammer (DHD340–380) →
hint
How a Low Pressure DTH Hammer Improves Drilling Efficiency
1. Stable Air Flow Management
Low pressure hammers utilize optimized air channels to ensure smooth cuttings discharge-even under low air input.
2. Reduced Bit Wear
With controlled impact force, DTH bits experience less damage, extending service life and saving replacement cost.
3. Reliable Performance in Mixed Formations
The hammer maintains consistent energy transfer, avoiding common problems like:
Stalling
Decline in penetration rate
Excessive fuel burn
Choosing the Right Low Pressure DTH Hammer
When selecting a hammer for your DTH drilling system, consider:
1. Hammer Size
Common sizes:
3" low pressure DTH hammer
4" low pressure DTH hammer
5" low pressure DTH hammer
6" low pressure DTH hammer
2. Bit Shank Type
Popular shank types include:
COP, DHD, QL, Mission, SD, BR-choose based on rig and hole size.
3. Air Compressor Capacity
Match your hammer with a compressor that can deliver at least:
6–8 bar (minimum)
12 bar (recommended)
4. Application Needs
Water well drilling, mining drilling, quarry drilling, and construction all require different impact force and air flow.
For more details, please refer to this article.
🔗 /how-to-choose-the-right-dth-hammer
Product Details
OEM & Customized Service
We can provide OEM, branding, customized diameter, customized thread, special pressure hammers, and complete drilling tools package.
We export over 40+ countries
Cross-sell
DTH Button Bits
Drill Pipes (89mm/102mm/114mm)
Air Compressors (High Pressure 17–25 bar)
Water Well Drilling Rig
FAQ
Q: Do you offer OEM and spare parts support?
A: es. We provide OEM customization, spare parts supply, and full after-sales service.
Q: What is a DTH Hammer and how does it work?
A: A DTH Hammer (Down The Hole Hammer) is a percussion drilling tool used for hard rock drilling. It works by delivering high-frequency impact force directly to the DTH bit through compressed air, achieving faster penetration and stable performance in deep drilling.
Q: How do I choose the right DTH Hammer model?
A: Choose based on: Drilling hole diameter Air pressure (medium pressure / high pressure) Compatible bit shank type (DHD/SD/QL/Mission) Rock hardness and drilling conditions If unsure, send us your drilling requirements-we will recommend the best hammer.
Q: Are your DTH Hammers compatible with other brands?
A: Yes. Our DTH Hammers are compatible with DHD, SD, QL, Mission, COP, NUMA and other international shank types. They can match most DTH bits and drill rigs on the market.
Q: What air pressure does your DTH Hammer require?
A: We offer: Medium pressure DTH Hammer: 7–15 bar High pressure DTH Hammer: 14–30 bar Tell us your compressor model (Atlas, Sullair, Kaishan), and we will match the correct hammer.
Q: What is the service life of a DTH Hammer?
A: Service life depends on rock hardness, air pressure, and lubrication. Typically: Alloy steel body: 8–12 months (normal use) Internal wear parts can be replaced to extend lifespan We also provide spare parts kits for maintenance.
Shipping&Payment
Every piece of Miningwell equipment and drilling rig undergoes a rigorous load security check to ensure the safety of the cargo in the container.
Our payment methods: credit card, L/C, T/T, Western Union, and we support shipping by air and by sea.
Hot Tags: Low Pressure DTH Hammer, China Low Pressure DTH Hammer manufacturers, suppliers, factory, drill bit delivery, low pressure dth hammer, locking drill bits, drill bit certification, drill bit powders, drill bit replacement
