Big Hole Drilling Ballistic Or Spherocal Button Misson 40-146mm DTH Bit
Big Hole Drilling Ballistic or Spherocal Button Misson 40-146mm DTH Bit
In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length.
Basic Information
diameter range:105mm~127mm
DTH hammer: M40 hammer
Hole range:110mm~135mm
| Specification of dth hammer button bits: | Diameter: (mm) |
| 1-2 inch low pressure DTH bits | 64/70/76/80/82/90 |
| 3 inch high Air pressure DHT bits | 85 / 90 / 95 / 100 / 105 |
| 4 inch high Air pressure DHT bits | 105 / 110 / 115 / 120 / 127 |
| 5 inch high Air pressure DHT bits | 133 / 140 / 146 / 152 / 165 |
| 6 inch high Air pressure DHT bits | 152 / 165 / 178 / 190 / 203 |
| 8 inch high Air pressure DHT bits | 195 / 203 / 216 / 254 / 305 |
| 10, 12 inch high Air pressure DTH bits | 254/305/318/330/356/381 |
Competitive Advantage
• High grade tungsten carbide inserts
• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment
M40 High Air Pressure DTH Button Bit Specification:
| Diameter | Buttons and Size (mm) | Flushing hole | Weight | Part Number | |||
| mm | inch | Front | Gauge | kg | |||
| Ballistic button/Concave face | |||||||
| 115 | 4 1/2 | 4×14,2×14 | 8×14 | 2 | 6.8 | 4148301289 | |
| 121 | 4 3/4 | 4×14,2×14 | 8×14 | 2 | 7.4 | 4148301290 | |
| 127 | 5 | 4×14,3×14 | 8×14 | 2 | 7.6 | 4148301291 | |
| 130 | 5 1/8 | 4×14,3×14 | 8×16 | 2 | 8 | 4148301292 | |
| Spherical button/Concave face | |||||||
| 115 | 4 1/2 | 4×14,2×14 | 8×14 | 2 | 6.8 | 4148301293 | |
| 121 | 4 3/4 | 4×14,2×14 | 8×14 | 2 | 7.4 | 4148301294 | |
| 127 | 5 | 4×14,3×14 | 8×14 | 2 | 7.6 | 4148301295 | |
| 130 | 5 1/8 | 4×14,3×14 | 8×16 | 2 | 8 | 4148301296 | |
| 133 | 5 1/4 | 4×14,4×14 | 8×16 | 2 | 8.3 | 4148301297 | |
| Ballistic button/Convex face | |||||||
| 110 | 4 3/8 | 4×14,2×14 | 8×14 | 2 | 6.4 | 4148301298 | |
| 115 | 4 1/2 | 4×14,2×14 | 8×14 | 2 | 6.8 | 4148301299 | |
| 121 | 4 3/4 | 4×14,2×14 | 8×14 | 2 | 7.4 | 4148301300 | |
| 127 | 5 | 4×14,3×14 | 8×14 | 2 | 7.6 | 4148301301 | |
| 130 | 5 1/8 | 4×14,3×14 | 8×16 | 2 | 8 | 4148301302 | |
| 133 | 5 1/4 | 4×14,4×14 | 8×16 | 2 | 8.3 | 4148301303 | |
| Spherical button/Flat face | |||||||
| 110 | 4 3/8 | 6×14 | 8×14 | 2 | 6.4 | 4148301304 | |
| 115 | 4 1/2 | 6×14 | 8×14 | 2 | 6.8 | 4148301305 | |
| 121 | 4 3/4 | 6×14 | 8×14 | 2 | 7.4 | 4148301306 | |
| 127 | 5 | 7×14 | 8×14 | 2 | 7.6 | 4148301307 | |
| 130 | 5 1/8 | 7×14 | 8×16 | 2 | 8 | 4148301308 | |
| 133 | 5 1/4 | 7×14 | 8×16 | 2 | 8.3 | 4148301309 | |
We can design and manufacture the personalized products to meet your specical apllication, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.
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