BQ HQ NQ PQ Diamond Core Drill Bits for Mining Exploration - 36.4mm to 85mm Core Diameter Range
Our diamond core bits feature engineered waterways for efficient removal of cutting debris during operation. The center hole design allows sediment rock removal and enables core pedestal passage into the core barrel for optimal performance.
Roschen Group Limited diamond core bits are engineered for exceptional cutting performance and extended service life. We offer comprehensive selections of wireline and conventional coring bits, shoes, and reaming shells.
- Bits: Impregnated, Surface Set, Carbide, PCD, Thin Wall Concrete Bits
- Reaming Shells: Diamond, Carbide
- Casing Shoes: Diamond, Carbide
| SIZE | CORE Ø | HOLE Ø |
|---|---|---|
| AQTK | 35.5 mm (1-3/8 in) | 48 mm (1-7/8 in) |
| BQ | 36.4 mm (1-7/16 in) | 60 mm (2-3/8 in) |
| BQTK | 40.7 mm (1-5/8 in) | 60 mm (2-3/8 in) |
| NQ | 47.6 mm (1-7/8 in) | 75.7 mm (3 in) |
| NQTK (NQ2") | 50.6 mm (2 in) | 75.7 mm (3 in) |
| NQ3 | 45 mm (1-3/8 in) | 75.7 mm (3 in) |
| HQ | 63.5 mm (2-1/2 in) | 96 mm (3-3/8 in) |
| HQ3 | 61.1 mm (2-3/8 in) | 96 mm (3-3/8 in) |
| PQ3 | 85 mm (3-3/8 in) | 122.6 mm (4-7/8 in) |
| PQ3 | 83 mm (3-1/4 in) | 122.6 mm (4-7/8 in) |
Our extensive product line includes Q series (AQ, BQ, NQ, HQ, PQ/AQTK, BQTK, BQ3, NQ2, NQ3, NQTT, HQ3, HQTT, PQ3, PQTT) and multiple gauge systems covering A-Gauge through Z-Gauge core bits, plus T Series, TT Series, T2 Series, TB Series, T6 Series, T6S Series, B Series, and all other standard sizes including CDDA, DCDMA, Crealius, and ISO specifications.
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