Designed and developed for bolt holes for mounting of tunnel lining and technical equipment for tunnelling. It is controlled by highly advanced navigation technology to ensure accurate and systematic drilling of holes. The equipment is designed to handle tunnel profiles from T8.5 to T12.5. A standard truck chassis as base of the rig makes the equipment flexible in both handling and transport. During operation in the tunnel, the whole rig (including chassis) is controlled from the operator cabin without entering the chassis cabin.

The bolting rig can either be supplied with diesel-hydraulic power directly from the chassis, or electro-hydraulic power from electrical motors connected to 1000V power grids.