Hollow bars
Self-drilling Hollow Bar System
- Nominal external diameter
- 32 mm / 38 mm / 51 mm
- Yield load
- 220 kN - 630 kN
- Elongation
- 8 %
The Self-Drilling Hollow Bar System is a versatile ground support solution for mining, tunneling, and civil engineering applications. Available in the R32, R38, and R51 series, it combines drilling, grouting, and reinforcement in a single operation, enabling fast, reliable installation and high performance in challenging ground conditions.
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One-step installation
Drill, grout, and reinforce in a single process to reduce installation time and increase site productivity.
One-step installation
Drill, grout, and reinforce in a single process to reduce installation time and increase site productivity.
Drill, grout, and reinforce in a single process to reduce installation time and increase site productivity.
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Reliable in challenging ground
Ensures safe and efficient installation in weak ground and unstable boreholes without the need for casing.
Reliable in challenging ground
Ensures safe and efficient installation in weak ground and unstable boreholes without the need for casing.
Ensures safe and efficient installation in weak ground and unstable boreholes without the need for casing.
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High load capacity
Robust steel and thread design ensure consistent mechanical performance.
High load capacity
Robust steel and thread design ensure consistent mechanical performance.
Robust steel and thread design ensure consistent mechanical performance.
Product specifications
Technical specifications
| Nominal external diameter |
32 mm / 38 mm / 51 mm
|
|---|---|
| Yield load |
220 kN - 630 kN
|
| Elongation |
8
%
|
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