A core barrel with bullet teeth, also known as a rock core barrel auger, is a heavy-duty drilling tool widely used in bored piling and foundation drilling. It is designed to penetrate fractured rock, reinforced concrete, and medium-to-hard rock formations (50–100MPa) with high efficiency.
Compared with a standard rock auger, a bullet teeth core barrel concentrates cutting force on a smaller annular area, significantly improving drilling stability and penetration performance in difficult ground conditions. This makes it an ideal core barrel for hard rock and complex geological formations.
| Cutting Dia | Shell HIT | Shell THK | Stiffening Ring THK | Stiffening Ring HIT | Teeth NO | Weight |
|---|---|---|---|---|---|---|
| Φ600 | 1200 | 20 | 20 | 200 | 4 | 600 |
| Φ800 | 1200 | 20 | 20 | 200 | 6 | 800 |
| Φ900 | 1200 | 20 | 20 | 200 | 7 | 820 |
| Φ1000 | 1200 | 20 | 20 | 200 | 8 | 980 |
| Φ1200 | 1200 | 20 | 20 | 200 | 10 | 1300 |
| Φ1500 | 1200 | 20 | 20 | 200 | 12 | 1600 |
| Φ1600 | 1200 | 20 | 25 | 200 | 13 | 1740 |
| Φ1800 | 1000 | 20 | 25 | 200 | 15 | 1950 |
| Φ2000 | 800 | 25 | 25 | 200 | 16 | 2350 |
| Φ2200 | 800 | 25 | 25 | 200 | 18 | 2700 |
| Φ2500 | 800 | 25 | 25 | 200 | 21 | 3000 |
| Φ2800 | 800 | 25 | 25 | 200 | 24 | 3800 |
| Φ3000 | 800 | 25 | 25 | 200 | 25 | 4300 |
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Meclead engineers will recommend the best bullet teeth core barrel solution for your project.
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