Middle-Low Air Pressure DTH Hammers
product detail
BRIA、BR2A and BR3A series DTH Hammers are designed to operate efficiently at low air pressures and medium air pressures, using BR series bits.
The main features are as follows:
1. The operating air pressures are between 0.7Mpa and 1.75Mpa.
2. Valveless hammers.
3. Simple structure, easy to assemble and to disassemble, long life.
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.
BR1 DTH HAMMER
BR1-DTH Hammer | |||||
| |||||
Ref. |
Parts |
Weight |
Ref. |
Parts |
Weight |
1 |
Top Sub |
1.92 kg |
9 |
Guided Sleeve |
0.29 kg |
2 |
"O"Ring |
0.01 Kg |
10 |
Check Ring |
0.1 kg |
3 |
Check Valve |
0.08 kg |
11 |
Retainer Ring |
0.08 kg |
4 |
Spring |
0.01 Kg |
12 |
"O"Ring |
0.01 Kg |
5 |
Air distributor |
0.46 kg |
13 |
Drive Chuck |
0.82 kg |
6 |
Inner Cylinder |
0.38 kg |
14 |
Drill Bit |
|
7 |
Piston |
1.16 kg |
|||
8 |
Outer Cylinder |
3.46 kg |
|||
Technical parameters | |||||
Length(Without Bit) |
Weight |
External diameter |
Connection Thread |
Bit Shank |
Hole Range |
698mmmm |
8.8Kg |
Φ56mm |
RD40 BOX |
BR1 |
Φ76-Φ90mm |
Working pressure |
Recommended rotation speed |
Air Consumption |
|||
1.0Mpa |
1.4Mpa |
||||
0.8-1.5Mpa |
30-50 r/min |
2m³/min |
3m³/min |
||
BR2 DTH HAMMER
BR2-DTH Hammer | |||||
| |||||
Ref. |
Parts |
Weight |
Ref. |
Parts |
Weight |
1 |
Top Sub |
2.5 Kg |
9 |
Guided Sleeve |
0.52 Kg |
2 |
"O"Ring |
0.01 Kg |
10 |
Retainer Ring |
0.1 Kg |
3 |
Check Valve |
0.08 Kg |
11 |
"O"Ring |
0.01 Kg |
4 |
Spring |
0.05 Kg |
12 |
Drive Chuck |
1.2 Kg |
5 |
Valve Seat |
0.5 Kg |
13 |
Drill Bit |
|
6 |
Inner Cylinder |
0.6 Kg |
|||
7 |
Piston |
2.3 Kg |
|||
8 |
Piston Case |
4.5 Kg |
|||
BR2 Technical parameters | |||||
Length(Without Bit) |
Weight |
External diameter |
Connection Thread |
Bit Shank |
Hole Range |
810mmmm |
12.5Kg |
Φ64mm |
RD50 BOX |
BR2 |
Φ70-Φ90mm |
Working pressure |
Recommended rotation speed |
Air Consumption |
|||
1.0Mpa |
1.4Mpa |
||||
0.8-1.5Mpa |
30-50 r/min |
3m³/min |
4.5m³/min |
||
BR3 DTH HAMMER
BR3-DTH Hammer | |||||
| |||||
Ref. |
Parts |
Weight |
Ref. |
Parts |
Weight |
1 |
Top Sub |
4.4 Kg |
9 |
Guided Sleeve |
0.9 Kg |
2 |
"O"Ring |
0.01 Kg |
10 |
Check Ring |
0.15 Kg |
3 |
Check Valve |
0.13 Kg |
11 |
Retainer Ring |
0.25 Kg |
4 |
Spring |
0.02 Kg |
12 |
"O"Ring |
0.01 Kg |
5 |
Valve Seat |
0.76 Kg |
13 |
Drive Chuck |
2 kg |
6 |
Inner Cylinder |
1.45 Kg |
14 |
Drill Bit |
|
7 |
Piston |
4.7 Kg |
|||
8 |
Piston Case |
6 Kg |
|||
BR3 Technical parameters | |||||
Length(Without Bit) |
Weight |
External diameter |
Connection Thread |
Bit Shank |
Hole Range |
871mmmm |
21Kg |
Φ82mm |
API2 3/8"REG |
BR3 |
Φ90-Φ115mm |
Working pressure |
Recommended rotation speed |
Air Consumption |
|||
1.0Mpa |
1.5Mpa |
||||
1.0-1.7Mpa |
30-50 r/min |
4m³/min |
7m³/min |
||