48 TT Core Barrel – Extra Thin Kerf Double Tube System
The Atlas Copco XsafE 48 TT extra thin kerf double tube core barrel is designed for core drilling in medium hard to extremely hard formations. The system features a snap-coupling inner tube design, ensuring fast handling and reduced downtime during drilling operations.
Its optimized cutting geometry and reduced kerf provide efficient penetration, stable performance and accurate core recovery. The design ensures reliable flushing and consistent results in both surface and underground exploration drilling.
Technical Specifications
| Parameter | Value |
|---|---|
| Hole diameter (reaming shell O.D.) | 48.0 mm |
| Drill bit outer diameter | 47.7 mm |
| Core diameter | 35.3 mm |
| Bit kerf | 6.3 mm |
| Cutting surface | 831 mm² |
| Hole area | 1811 mm² |
| Core area | 980 mm² |
| Cutting area (% of hole) | 46% |
| Outer tube diameter | 46.8 mm |
| Standard connection | AWJ |
| Recommended drill rod | AWJ |
| Rotation speed | 1250–2100 rpm |
| Weight on bit | 7–15 kN |
| Water flow | 6–12 l/min |
| Penetration rate | 14–26 cm/min |
Spare parts for the 48 TT core barrel are available, including inner tubes, outer tubes, core lifters, bearings and service kits to ensure reliable operation and long service life.