Raise Bore Pilot Bits
Black Diamond Drilling manufactures and supplies high-performance Raise Boring Pilot Bits engineered for precision, durability, and efficiency in the toughest underground conditions. Designed to provide accurate guidance during pilot hole drilling, our pilot bits ensure a stable foundation for reaming operations, reducing downtime and maximizing productivity. Manufactured from premium materials and incorporating advanced cutting structures, they deliver exceptional wear resistance, reliability, and consistent performance across a wide range of rock formations.
Raise Bore Pilot Bit Applications
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Pilot Hole Drilling
Raise bore pilot bits are used to drill the initial pilot hole from the surface or a starting chamber. This hole establishes the correct alignment and guides the reamer during the enlargement process. -
Accuracy & Alignment
They ensure the raise bore follows the planned path, maintaining directional control and minimizing deviation, which is critical for safety and efficiency. -
Foundation for Reaming
Once the pilot hole is drilled, a reamer head is attached on the opposite side. The pilot bit and pilot hole provide the necessary stability and connection point for pulling the reamer back through the rock to create a larger shaft. -
Applications
Pilot bits are used in mining, civil tunneling, hydro projects, and shaft construction to create ventilation shafts, ore passes, service shafts, and escape ways. -
Durability in Harsh Conditions
They are designed to cut through hard and abrasive rock formations while withstanding extreme stress and maintaining long service life.
229mm Pilot Bit
251mm Pilot Bit
279mm Raise Bore Pilot Bit
311mm Raise Bore Pilot Bit
349mm Raise Bore Pilot Bit
