1" Middle Air Pressure DTH Bit Flat Face Spherocal Button BR1-64mm
1'' 2'' 3" Middle Air Pressure DTH Bits
DTH Button Bits for BR1, BR2, BR2 Hammer.
BR Series DTH Button Bit Specification
| 1'' 2'' Middle Air Pressure DTH Bits |
| DTH Button Bit | Diameter | Buttons and Size (mm) | Flushing hole | Weight |
| mm | inch | Gauge | Front | kg |
| BR1 | 64 | 2 1/2 | 6x10 | 3x10 | 2 | 2.2 |
| 70 | 2 3/4 | 6x12 | 4x9 | 2 | 2.4 |
| 76 | 3 | 6x13 | 5x10 | 2 | 2.6 |
| BR2 | 64 | 2 1/2 | 6x13 | 5x10 | 2 | 2.8 |
| 70 | 2 3/4 | 6x13 | 5x11 | 2 | 3.0 |
| 76 | 3 | 6x14 | 5x12 | 2 | 3.2 |
| BR3 | 90 | 3 1/2 | 6x14 | 4x13 | 2 | 3.4 |
| 95 | 3 4/5 | 6x14 | 4x13 | 2 | 3.5 |
| 100 | 4 | 6x14 | 5x13 | 2 | 3.7 |
| 105 | 4 1/5 | 6x14 | 6x13 | 2 | 3.9 |
Product: DTH Button Bit
Diameter: 64mm
Bit Shank: BR1
Face Design: Flat face
Button/Carbide Type: Spherical
Button Number and Diameter: 3x10mm front, 6x13mm gauge
Flushing Holes: 3 front flushing holes
Weight: 2.0kg per piece
Color: Green
Product pictures:
Bit Face Shape Selection:
Center Drop Bit:
For high penetration rates in soft to medium hard and fissured rock
formations. Low to medium air pressure.
Maximum hole deviation control.
Concave Face
The all-around application bit face specifically for medium hard
and homogenerous rock formations.
Good hole deviation control and good flushing capacity.
Convex Face
For high penetration rates in soft to medium-hard with low to
medium air pressure. It is the most resistance to steel wash, any
may reduce the load and wear on gauge buttons, but poor hole
deviation control.
Double Gauge Face
This kind of face shape is suitable for fast penetration rates in
medium to hard rock formations. Designed for high air pressure and
good resistance to steel wash step gauge bit.
Flat Face Bit
This kind of face shape is suitable for hard to very hard and
abrasive rock formation is applications with high air pressure.
Good penetration rates and resistance to steel wash.
