DrillMore provide DTH drill bit designed according to your local rock condition, to ensure drilling safety and improve the drilling speed. Our DTH Bit Size from 3" To 40", Bit Shank DHD/COP/QL/ SD/MISSION/NUMA/CIR/BR etc.
BR2 Middle-low Air Pressure DTH button bit, Shank Type: BR2, 6 splines
BR Series Button Drill Bits
| BR Series Button Drill Bits | ||||||||
 | Series | Head / Face Shape | Diameter (mm) | Spline Numbers | Button Shape | Button Qty & Diameter (mm) | Shank Spec | Weight |
| BR1 | Flat face | 64 | 6 | Ballistic | 6×Φ10 | 6×Φ11 | 1.8 | |
| Convex face | 70 | 6 | Ballistic | 6×Φ11 | 4×Φ10 | 1.8 | ||
| BR2 | Flat face | 76 | 6 | Ballistic | 6×Φ14 | 4×Φ11 | 2.7 | |
| Flat face | 80 | 6 | Ballistic | 6×Φ14 | 4×Φ11 | 2.8 | ||
| Flat face | 85 | 6 | Ballistic | 6×Φ14 | 4×Φ12 | 3.1 | ||
| Flat face | 90 | 6 | Ballistic | 6×Φ14 | 4×Φ12 | 3.1 | ||
 | BR3 | Flat face | 90 | 6 | Spherica l+Ballistic | 6×Φ14 | 5×Φ12 | 4.1 |
| Flat face | 95 | 6 | Spherica l+Ballistic | 5×Φ12 | 5×Φ12 | 4.3 | ||
| Flat face | 100 | 6 | Spherica l+Ballistic | 5×Φ12 | 6×Φ12 | 4.5 | ||
| Flat face | 108 | 6 | Spherica l+Ballistic | 6×Φ12 | 6×Φ12 | 4.8 | ||
How to find a suitable DTH bit?
DrillMore DTH Drill Bit has a variety of carbide and face designsfor use in different ground conditions.
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| Spherical/round buttons are usually used as gauge buttons of DTH bits, suitable for very abrasive and very hard formations. | Parabolic buttons are usually used as gauge buttons and front buttons of DTH bits, suitable for medium abrasive and hard formations. | Ballistic buttons are usually used as front buttons of dth bits, suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft. | Sharp buttons are usually used as front buttons of DTH bits for soft formations, suitable for high rotation speed and low bit broken rate soft rock. | Flat buttons are usually used as protection buttons to reduce wear on rubbing surface of DTH bits. |
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