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Overburden drilling

Style: ODEX-eccentric, Symmetrix-concentric
Hole Diameter: ODEX-eccentric: 114-324mm
Symmetrix-concentric: 114-610mm

 
Features: Pilot bit is well designed to offer good drilling efficiency.
Optimization design for each part reduces the probability of accident.
Strengthening quality of stable pole driller extends the drilling life and improve cost-performance ratio.
Working Principle
 
ODEX-eccentric

 
Symmetrix-concentric