HAMMER BITS
Hammer Bits is a new-generation product innovated and improved for the demands of different industrial and mining conditions. It is a high-quality and high efficiency rock breaking tool, specially suitable for boring on hard rock and extremely-hand rock. Main products covering from 4″ to 12″ series, suitable for boring and rock breaking works, such as mine exploration, mineral prospecting, hydroeletric power construction, highway and bridge base pile holes and the like.
Parameters:
| The hole diameter (mm) | Φ105-Φ133 | Φ140-152 | Φ152-Φ190 | Φ203-Φ305 | Φ305-Φ406 |
| Outside diameter (mm) | 94 | 122 | 136 | 180 | 275 |
| Total Length (mm) | 1140 | 1340 | 1450 | 1600 | 1190 |
| Total weight (kg) | 48 | 69 | 105 | 175 | 610 |
| Speed (RPM) | 45-60 | 40-55 | 35-50 | 30-45 | 15-30 |
| Torque range (kgm) | 110-170 | 180-260 | 240-360 | 370-560 | 750-1800 |
| Axial pressure (kg) | 600-900 | 900-1200 | 1300-1500 | 1600-1800 | 2400-2600 |
| Pressure (kg/cm2) | 7-24.5 | 7-24.5 | 7-24.5 | 7-24.5 | 7-14 |
| Frequency (times/minutes) | 1560-2060 | 1400-1850 | 1320-1750 | 1360-1810 | 1200-1500 |
| Impact energy (kgm) | 17.4-30.4 | 37.2-65.1 | 47-82.2 | 89.1-156 | 105-210 |
| Air Consumption (m3/min) | 7.6-13 | 7-22.6 | 10-6 | 11.5-35 | 16-42 |
| Pure perforation speed (m/h) | 16-42 | 20-44 | 18-38 | 16-34 | 6-20 |
| Drill pipe threaded connection | API (inside) 2-3/8 | API 2-3/8 | API 3-1/2 | API 4-1/2 | API 6-5/8 |