8 Inch 311mm Carbon Steel DTH Hammer Bit for Mining and Water Well Drilling
Price:
Negotiable
MOQ:
1
Delivery Time:
20-30
Brand:
MIROC
Product Description
8 Inch DHD380-311mm DTH Hammer Drill Button Bit
High-performance down-the-hole (DTH) drilling tool engineered for mining, water well drilling, and large-scale foundation applications in medium to extremely hard rock formations.
Product Overview
The DHD380 Hammer Bit is designed for compatibility with DHD380 or similar large-diameter DTH hammers, delivering superior durability, penetration rate, and operational economy in demanding drilling operations.
Key Features & Benefits
- Extended Bit Life: Forged from premium alloy steel with high-density, wear-resistant tungsten carbide buttons for maximum service life in abrasive formations
- Superior Penetration Rate: Optimized button layout and advanced head profile ensure efficient energy transfer for faster drilling
- Excellent Hole Stability: Precisely arranged gauge buttons maintain consistent hole diameter and straight-hole accuracy
- Efficient Debris Removal: Strategically sized flushing holes allow optimal air flow for effective cuttings removal
- Heavy-Duty Connection: Robust standardized thread connection (DHD 380 R32 or similar) withstands high torque and impact stress
Technical Specifications
| Head Shape | Head Diameter (mm) | Shank Length (mm) | Spline | Port Holes | Button Type | Button Qty. × Dia. (mm) | Weight (Kg) |
|---|---|---|---|---|---|---|---|
| Concave Face | 203 | 350 | 10 | 2 | Domed | Gauge: 10×Ø18 Front: 4×Ø18 + 10×Ø16 |
48.5 |
| Concave Face | 216 | 350 | 10 | 2 | Domed | Gauge: 10×Ø18 Front: 4×Ø18 + 10×Ø16 |
52.1 |
| Concave Face | 230 | 350 | 10 | 2 | Domed | Gauge: 12×Ø18 Front: 12×Ø18 + 6×Ø16 |
54.8 |
| Concave Face | 235 | 350 | 10 | 2 | Domed | Gauge: 12×Ø18 Front: 12×Ø18 + 6×Ø16 |
55.5 |
| Concave Face | 254 | 350 | 10 | 2 | Domed | Gauge: 12×Ø18 Front: 12×Ø18 + 8×Ø16 |
62.4 |
| Convex-Concave Face | 275 | 350 | 10 | 3 | Domed | Gauge: 15×Ø18 Front: 35×Ø16 |
77.6 |
| Convex-Concave Face | 305 | 350 | 10 | 3 | Domed | Gauge: 15×Ø18 Front: 35×Ø16 |
77.6 |
Selection Guide: Head Profile & Button Type
Head Profiles
- Flat Face Bit: Balanced cutting action for medium to hard, stratified formations
- Convex Face Bit: Concentrates impact energy for very hard and brittle rock
- Concave Face Bit: Shearing action for softer to medium-hard, ductile formations
Button Types
- Spherical (Domed) Buttons: Maximum wear resistance for hardest and most abrasive rock
- Ballistic (Chisel) Buttons: Sharper cutting edge for higher penetration in medium-hard to hard rock
Why Choose the DHD380 Hammer Bit?
- Proven Reliability: Built to exacting DHD hammer compatibility standards
- Cost-Effective Drilling: Maximizes meters drilled per bit, reducing downtime and tooling costs
- Versatility: Available in various diameters and designs for specific geological conditions
- Global Support: Backed by extensive technical support and worldwide supply network
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
KSQ Technologies (Beijing) Co. Ltd
Location
Room9-616, No. 10 Zhenxing Road (MDW Plaza), Changping District, 102200 Beijing, China
Contact Person
Yingkai Zhang