Vulcan Bolt

Vulcan Bolt


The patented Vulcan Bolt is an integrated primary and secondary support system for the absorption of energy in squeezing and dynamic ground conditions.

The Vulcan Bolt offers immediate and full load capacity on installation with a high yield and energy absorption capacity.

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 and has the ability to accommodate an irregular rock face.

The Vulcan Bolt delivers an improved efficiency to the current support cycle and is conventionally installed with mechanised equipment. A positive clamping force is introduced into the rock mass which can be visually audited with the inclusion of a load indicator. The Vulcan Bolt can accommodate a secondary push on or screw on mesh washer.


Bar diameter (mm) Ø20
Length of bolt (m)* 1.8 – 3.0
Hole size range (mm): Ø39 Vulcan Bolt Ø36– Ø38
Hole size range (mm): Ø46 Vulcan Bolt Ø42– Ø45
Minimum yield load (kN) 150
Minimum ultimate tensile load (kN) 205
Minimum elongation** 22%
*Non-standard lengths can be accommodated upon request
**Tested as per SANS 6892-1:2010 (Ed. 1.00)


Vulcan Bolt
Vulcan Bolt end
Vulcan Bolt with faceplate