The following types of bolts are available:
Cable bolts are made from cable of Ø18 mm and 1+6 structure in accordance with PN-71/M-80236 standard. The following types of bolt can be distinguished:
The cable lay of KL 18 K bolt was modified to form birdcage like bulbs of 100 mm in length and 26 ÷ 28 mm in diameter. This ensures a better force distribution affecting the cement grout around the cable. When filled with grout the cages act like stiff bulbs in relation to the cement face.
Cable bolts are made from cable of Ø15.5 or 18 mm in diameter and 1+6 structure. Upper end is cut by one side to perforate resin cartridges easier. Upper part cable was modified to achieve better load distribution on resin column around cable. When filled up with grout or resin the cages act like stiff bulbs in relation to the cement face.
Birdcages are designed to mix resin cartridges. In the lower part there is stiffening tube and tensioning sleeve. Both items are solid jointed. Tensioning sleeve with the wedge work as clamp. Bottom is ended with hexagonal adapter to rotate the bolt. Rubber seal on the cable used only when installed with the resin of low viscosity.
The following production options are available: