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  • When selecting rock drill tools for tunnel drilling, it is important to consider several factors, including the type of rock formations to be drilled, the size and depth of the tunnel, and the available drilling equipmenttunneltunnel drilling rock drill tools. The right choice of rock drill tools can greatly improve the efficiency and productivity of tunnel drilling operations.
  • A typical hole cutter drill bit consists of a circular blade with teeth on the perimeter, a pilot drill bit at the center, and often a shank that connects it to the drill. The pilot bit helps guide the hole cutter, ensuring a straight and accurate cut, while the sharp teeth on the circumference do the actual cutting. The design allows for faster removal of material, reducing the time and effort required compared to other drilling methods.