Middle Air Pressure Down The Hole Hammer Rock Tools
BR1 BR2 Hammer And DTH Button Bit
for DTH Drilling Rig
BR1 DTH Hammer & Bit
Air distribution of 1” hammer with the valve to utilize bit without
blow tube.
BR1 DTH Hammer Structure
BR1 Hammer And Bit Technical Parameters
BR1 Series DTH Hammer Features
Valved air distribution hammer
BR1 Series DTH Hammer Application
Available for slope anchoring projects.
BR2 DTH Hammer & Bit
Air distribution of 2” hammer with the valve to utilize bit without
blow tube
BR2 DTH Hammer Structure
BR2 Hammer Part
BR2 Hammer Technical Parameters
| Length(Without Bit) | Weight(Without Bit) | External Diameter(mm) |
| 708mm | 14.5 | 63mm |
| Working Pressure | Impact Rate At 17 bar | Speed Recommended |
| 7-20Bar | 35Hz | 30-70rpm |
| Bit Shank | Hole Range | Connection Thread(top sub-drill pipe) |
| BR2 | 70mm-90mm | RD50 BOX |
| Pull Force Recommended | Reference Air Consumption(m³/min) |
| 5kN | 14Bar: 5.5 | 17.2Bar:8.0 |
BR2 Button Bit Technical Parameters
BR2 Series DTH Hammer Features
Button bit without foot valve
High impaction frequency
Fast drilling speed
Low consumption of impaction energy.
BR2 Series DTH Hammer Application
Available for all working conditions specialize in quarry drilling
with low-mid air pressure.
BR DTH Hammer Features:
1. The operating air pressure is between 0.7 MPa and 1.75 MPa.
2. Valveless hammers.
3. Simple structure, easy to assemble and to disassemble, long life
span.
4. Higher impact frequency and faster drilling speed.
5. Lower air consumption and lower oil consumption. A hole can be
drilled on the check valve to provide more efficient cuttings
discharge.
6. Especially suitable for quarrying.
BR DTH Hammer Advantage:
BR1, BR2, BR3 series DTH hammers are designed to operate
efficiently at low air pressures and medium air pressures, using BR
series bits.
