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46 T2 Core Barrel – Double Tube Core Drilling System
The Atlas Copco XsafE 46 T2 double tube core barrel is designed for core drilling in medium hard to extremely hard formations. The system ensures reliable core recovery and stable performance across a wide range of drilling conditions.
Its optimized cutting geometry provides efficient penetration, consistent performance and accurate core recovery. The design ensures reliable water flushing and stable results in both surface and underground exploration drilling.
Technical Specifications
| Parameter | Value |
|---|---|
| Hole diameter (reaming shell O.D.) | 46.5 mm |
| Drill bit outer diameter | 46.0 mm |
| Core diameter | 31.7 mm |
| Bit kerf | 7.2 mm |
| Cutting surface | 894 mm² |
| Hole area | 1684 mm² |
| Core area | 789 mm² |
| Cutting area (% of hole) | 53% |
| Outer tube diameter | 45.2 mm |
| Standard connection | CR 42 |
| Recommended drill rod | 43 / AWJ43 |
| Rotation speed | 1250–2100 rpm |
| Weight on bit | 9–15 kN |
| Water flow | 6–12 l/min |
| Penetration rate | 14–26 cm/min |
Spare parts for the 46 T2 core barrel are available, including inner tubes, outer tubes, core lifters, bearings and service kits to ensure reliable operation and long service life.