TBM Cutter, as called Disc cutter, disc hob is the most important rock cutting tool in a Tunnel Boring Machine (TBM). When a TBM excavates, the disc cutters mounted on the cutter head are propelled forward by thrust provided by an oil cylinder and pressed into the rock. Cracks initiate and propagate under the increasing pressure of cutter penetration.
TBM Cutter /Disc hob/disc hob is an excavation tool for breaking hard rock. It is installed on the head of large trenchless construction equipment such as shield, TBM, jacking pipe, etc. Its role is to cut the palm face rock and remove the rock from the palm face. Flake off. Widely used in subway tunnels, railway tunnels, diversion tunnels and urban underground pipe network construction workers.