Omega Bolt ®s

Advantages and Characteristics

  • Immediate full bearing load on 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
DSI Omega Bolt ®

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.

 

The bond between the friction bolt and the rock mass is caused by form closure and friction transfer between the borehole wall and the rock bolt, which is expanded by hydraulic pressure.


Excavation works
Excavation works
Installation of Omega Bolt ®
Installation of
Omega Bolt ®
Bolt Testing
Bolt Testing

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