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MAIN PURPOSE FOR RAISE BORING MACHINE

KAMA brand raise boring machine is highly efficient in drilling the dummy shaft, including bunker, ventilation outlet, pressure conduit in hydro-power plant and also borehole for cable stuff. It has been widely adopted in varies of engineering fields, which cover coal mine, metal mine and also water conservancy and hydropower subject. The product has high reputation in not only economic returns but also social benefits.

TERMINOLOGY

Pilot Hole: Use the tri-cone rock bit to drill the hole forward along the whole borehole.

Reaming Bit: The drill bit is used to enlarge the hole.

Broaching Process: The process of enlarging the borehole, following the process of pilot hole drilling.

Raise-boring Machine: The rotary drilling rig which bores pilot hole forward and reaming hole in reverse direction.

Dynamic Hydro-valve: This is integrated equipment which can output torque and transmit the flushing fluid.

Stable Stem: The multi-purpose stem with wide range of functions in stabilizing penetration, direction leading and also torque transmitting. 

Pilot Stem: The special stem can ensure the quality of pilot hole.