GMA's dynamic rock bolt for mechanical installation in cement-filled boreholes. The GE bolt is equipped with a wedge at the top which has the task of expanding during installation and holding the bolt in place while the cement in the borehole hardens, making it possible to contiune with rapid installation of more bolts (no waiting time for curing).
The GE-bolt is delivered complete with spherical washer and dome plate according to customer request.
Packaging of bolts and washers according to customers request.
Dynamic bolt made of Ovako 280 material in dimension 20,3mm with an Yield strenght of min 460 N/mm2, Tensile strenght of Min 600 N/mm2 and a minimum elongation of 19%.
Produced in various lenghts from 2,3m up to 3m.
The GE-bolt M22 is delivered with a 40% higher M22 nut than the std. M22 (DIN934). This nut have been developed in order to even better restrain the forces from the hydrulic hammer during installation in the drill hole (when the wedge expand the bolt in the top).
Material specification, Mechanical properties / Technical specification and Test report are enclosed as separate files.
Dynamic bolt made of Ovako 280 material in dimension 22 mm with an Yield strenght of min 460 N/mm2, Tensile strenght of Min 600 N/mm2 and a minimum elongation of 19%.
Produced in various lenghts from 2,3m up to 3m.
Material specification enclosed as separate file.
