OMEGA-BOLT ®
Advantages and Characteristics
- Immediate full load bearing capacity over the complete bolt length
- Low-sensitive against vibrations caused by blasting works
- Safe and simple installation
- No extra building material required for installation
- Flexibility in case of different or varying borehole diameters
- Quality check during every single installation
The OMEGA-BOLT ® is available in different types:
- Type ERB 120
- Type ERB 160
- Type ERB 240
The main application of the OMEGA-BOLT ® is temporary rock reinforcement in Mining and Tunneling.
Bonding forces between the friction bolt and the rock mass are caused by form closure and friction transfer between the borehole wall and the rock bolt, which is expanded by hydraulic pressure.
- Excavation works
- Installation of
- OMEGA-BOLT ®
- Bolt Testing
Technical Specifications
| Unit | ERB 120 | ERB 160 | ERB 240 | ERB 120+ | ERB 160+ | ERB 240+ | |
| Minimum breaking load, expanded profile * | [kN] | 120 | 160 | 240 | 115 | 150 | 220 |
| Typical breaking load, expanded profile * | [kN] | - | - | - | 120 | 160 | 240 |
* According to EN 10002-1 where applicable
| 120/120+ | 160/160+ | 240/240+ | |
| Profile diameter | 27,5 | 36 | 36 |
| Material thickness (mm) | 2 | 2 | 3 |
| Original tube diameter (mm) | 41 | 54 | 54 |
| Upper bushing diameter (mm) | 28 | 38 | 38 |
| Bushing head diameter (mm) | 30/36 | 41/48 | 41/48 |
| Recommended borehole diameter (mm) | 32-39 | 43-52 | 43-52 |
| Optimum borehole diameter (mm) | 35-38 | 45-51 | 45-51 |
| Delivery lengths (m) | 1.0-8.0 | 1.0-8.0 | 1.0-8.0 |
| Inflation pressure (bar) | 300 | 250 | 300 |