Vulcan Bolt

Vulcan Bolt


The patented Vulcan Bolt is an integrated primary and secondary support system, that offers instantaneous support, with full load capacity on installation. The unique design creates an active support system with a full column frictional bond without the use of resin or grout and also gives excellent resistance to shear. This system provides a consistent load performance over a range of hole sizes, with the ability to accommodate an irregular rock face.

The Vulcan Bolt delivers an improved efficiency to the current support cycle. The system can be installed with mechanised equipment, and an auditable, positive clamping force is introduced into the rock mass. The Vulcan Bolt support system will accommodate a secondary mesh washer (either push on or screw on).

The Vulcan Bolt is pre-tensioned by tightening the nut. A collapsible load indicator is provided to confirm correct tensioning when installing.

The Vulcan Bolt can be supplied in lengths from 0.9 m up to 3.0 m in 100 mm increments.


Bolt Diameter (mm) Ø18 Ø20
Peak Load (kN) 175 210
Frictional Unit Diameter (mm) Ø39 or Ø46 Ø39 or Ø46
Hole Size Range (mm) 36 – 38 for Ø39
43 – 45 for Ø46
36 – 38 for Ø39
43 – 45 for Ø46
Vulcan Bolt
Vulcan Bolt end
Vulcan Bolt with faceplate