Top Hammer Drilling Tools
Shank adapters, couplings, extension and drifter rods, integral steels and button bits for surface and underground top hammer drilling.
Features
- Thread series decides the whole string, so ordering starts from the shank fitted to the rock drill.
- Rod straightness and thread condition matter more to energy transfer than raw steel grade.
- Bit face design, flat, drop centre or spherical, is chosen by rock hardness and by how straight the hole has to be.
- Guide rods and guide tubes reduce hole deviation on long benches, which protects blast pattern accuracy.
- Couplings are consumables and are replaced before thread wear starts damaging rod ends.
Specifications
| Figure | Typical range | Unit | Why it matters |
|---|---|---|---|
| Thread series | R32 / T38 / T45 / T51 | All string components must match. | |
| Bit diameter | 51 - 127 | mm | Hole size and rod clearance. |
| Rod length | 3 050 / 3 660 | mm | Matched to rig feed. |
| Bit face design | flat / drop centre / spherical | Penetration against hole straightness. |