Common specification(mm) | φ95~120 | φ95~123 | φ127~145 | φ127~165 | φ127~203 | |
Bit parameters | Blade numbers | 5 | 5 | 5 | 6 | 12 |
Main cutter dimensions(mm) | 13.44 | 13.44 | 13.44 | 13.44 | 13.44 | |
Main cutter number | 5 | 5 | 5 | 6 | 12 | |
Gauge cutter | Cemented carbide | Cemented carbide | Cemented carbide | Cemented carbide | Cemented carbide | |
Drilling parameters | Drilling pressure(kN) | 20~30 | 20~30 | 20~30 | 25~35 | 50~70 |
Rotary speed(rpm) | 200~350 | 150~300 | 150~260 | 120~240 | 100~200 | |
Pump capacity (L/min) | 100~150 | 150~200 | 150~260 | 160~280 | 200~300 |