The 47 mm Mech-Lok Dynamic 22 mm Hybrid Friction Bolt is designed for easy installation in poor and difficult ground conditions, such as squeezing and seismic ground conditions
Easy installation, even in collapsed drill holes
Utilizes thicker 3.2 mm friction bolt material wall thickness to increase installed radial force
Retains the typical 22 mm rebar used in the Jennmar static Mech-Lok Bolt
Energy dissipation minimum 32kJ - Energy dissipation Typical 60kJ
Typical Bar Elongation 25%
Dynamically tested using the Jennmar 105kJ Dynamic Test facility
Increased system capacity utilizes a combination of mechanisms working together
The resistance of the 47 mm Friction-Lok along the length of the bolt along with a unique expansion shell design improving energy dissipation and impact resistance
Inclusion of a solid internal bolt increasing load bearing capacity and shear resistance
Energy absorbing ring retains internal bolt in premature shearing failure mode
No changes required to existing drill rigs for installation