High Performance DTH Drill Bits and Button Bits in 57mm to 660mm with Carburized Steel and Carbide
DTH drilling tools are widely used in underground mining, quarries, hydraulic and hydro-power engineering, water well drilling, mineral exploration, anchoring hole drilling, geothermal engineering, subway excavation, and other civil engineering applications. These tools offer high flatness, smooth hole walls, rigid drill rods and hammers, independent high axial thrust, unlimited drilling depth, low device costs, and easy maintenance. They are particularly effective for drilling holes with diameters between 105mm and 254mm.
- Button bits provide high wear resistance on medium-hard to hard abrasive rock formations (200-260 Mpa compressive strength)
- Spherical tungsten carbide inserts offer strong configuration against carbide fracture
- Recommended for eliminating hole deviation
- Ideal for drifting and tunneling applications
- Optimal bit face design for medium-hard to hard abrasive rock
| Hammer Inch | Bit Dia (mm) | Bit Dia (inch) | Shank |
|---|---|---|---|
| 1" | 64mm-70mm | 2 1/2-2 3/4" | BR1 |
| 2" | 70mm-95mm | 2 3/4-3 3/4" | MACH20/BR2 |
| 3" | 90mm-102mm | 3 1/2-4" | M30/DHD3.5/BR3 COP32/COP34/MACH303 |
| 4" | 105mm-152mm | 4 1/8-6" | COP44/DHD340/MACH44 SD4/M40/QL40/BR4 |
| 5" | 133mm-165mm | 5 1/4-6 1/2" | COP54/DHD350R/MACH50 SD5/M50/QL50/BR5 |
| 6" | 152mm-254mm | 4 1/8-10" | COP64/DHD360/SD6 M60/QL60/Bulroc BR6 |
| 8" | 203mm-330mm | 8-13" | COP84/DHD380/SD8/QL80/M80 |
| 10" | 254mm-380mm | 10-15" | SD10/NUMA100 |
| 12" | 305mm-508mm | 12-20" | DHD1120/SD12/NUMA120/NUMA125 |
Concave: For medium-hard and homogeneous rock formations. Provides good hole deviation control and excellent flushing capacity.
Convex: For high penetration rates in soft to medium-hard formations with low to medium air pressure. Offers the most resistance to steel wash and may reduce load and wear on gauge buttons, though with less hole deviation control.
Flat face: Suitable for hard to very hard and abrasive rock formations in high air pressure applications. Delivers good penetration rates and resistance to steel wash.
Packaging options include ply-wooden cases or ply-wooden cases with pallets. Transportation available by sea, air, or express.
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