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Br1 Br2 Br3 Down The Hole Hammer and Button Bits
Bestlink
BR1,BR2,BR3 series DTH Hammers are designed to operate efficiently at low air pressure and medium air pressure, using BR series DTH bits.
The main features are as follows:
1. The operating air pressure 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 cutting discharge.
6. Especially suitable for quarrying.
Bulroc series (BR1, BR2, BR3) DTH Drill Button Bit:
| Model | Diameter | No.*button dia. (mm) | No. | Weight | ||
| mm | inch | gauge buttons | front buttons | flushing hole | kg | |
BR1 | 64 | 2 1/2 | 6*Φ10 | 3*Φ10 | 2 | 2.6 |
| 70 | 2 3/4 | 6*Φ12 | 4*Φ9 | 2 | 2.8 | |
| 76 | 3 | 6*Φ12 | 5*Φ10 | 2 | 3.2 | |
BR2 | 76 | 3 | 6*Φ12 | 5*Φ10 | 2 | 3.6 |
| 80 | - | 6*Φ13 | 5*Φ10 | 2 | 4 | |
| 90 | 3 1/2 | 6*Φ13 | 6*Φ10 | 2 | 4.5 | |
BR3 | 85 | - | 6*Φ13 | 4*Φ12 | 2 | 3.8 |
| 90 | 3 9/16 | 6*Φ14 | 4*Φ12 | 2 | 4 | |
| 95 | 3 3/4 | 6*Φ14 | 5*Φ12 | 2 | 4.3 | |
| 100 | 3 15/16 | 8*Φ13 | 6*Φ13 | 2 | 4.8 | |
| 105 | 4 1/8 | 8*Φ13 | 6*Φ13 | 2 | 5.2 | |
BR1,BR2,BR3 series DTH Hammers are designed to operate efficiently at low air pressure and medium air pressure, using BR series DTH bits.
The main features are as follows:
1. The operating air pressure 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 cutting discharge.
6. Especially suitable for quarrying.
Bulroc series (BR1, BR2, BR3) DTH Drill Button Bit:
| Model | Diameter | No.*button dia. (mm) | No. | Weight | ||
| mm | inch | gauge buttons | front buttons | flushing hole | kg | |
BR1 | 64 | 2 1/2 | 6*Φ10 | 3*Φ10 | 2 | 2.6 |
| 70 | 2 3/4 | 6*Φ12 | 4*Φ9 | 2 | 2.8 | |
| 76 | 3 | 6*Φ12 | 5*Φ10 | 2 | 3.2 | |
BR2 | 76 | 3 | 6*Φ12 | 5*Φ10 | 2 | 3.6 |
| 80 | - | 6*Φ13 | 5*Φ10 | 2 | 4 | |
| 90 | 3 1/2 | 6*Φ13 | 6*Φ10 | 2 | 4.5 | |
BR3 | 85 | - | 6*Φ13 | 4*Φ12 | 2 | 3.8 |
| 90 | 3 9/16 | 6*Φ14 | 4*Φ12 | 2 | 4 | |
| 95 | 3 3/4 | 6*Φ14 | 5*Φ12 | 2 | 4.3 | |
| 100 | 3 15/16 | 8*Φ13 | 6*Φ13 | 2 | 4.8 | |
| 105 | 4 1/8 | 8*Φ13 | 6*Φ13 | 2 | 5.2 | |
