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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.
DTH bits are paired with their corresponding hammers (by drilling hole diameter and spline configuration). Customers can customize their DTH bits in various ways, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.
• Medium to large size drilling diameters
• Works in high pressure range, capable of drilling deep hole lengths
• Color: Green,Blue or Based on Customer requirements
Product Name: | rock drill tungsten carbide DTH button bits | |
Description: | rock drill tungsten carbide DTH button bits DTH button bit are used for blast hole drilling. Working with DTH hammer, mainly applied in Mining, Marble quarry or well drilling and other construction projects. | |
Material: | High quality carbide and High quality carbon steel | |
MOQ: | No requirement for testing and trial order | |
Compatibility Series: | COP/ SD/ DHD/ IR/ Mission/ QL/ BR/ CIR etc | |
Applications of DTH Bit
• Underground mining
• Tunneling
• Quarry benching operations
Competitive Advantage
1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.
2. Smooth performance and long service life of DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.
3. Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble inner structure of hammer.
4. Easy to depart bit from hammer due to multi-head thread connecting chuck and cylinder of hammer.
5. Interchangeable with DTH bit and drill pipe
Specification of DTH Bit
Basic Information
| Items | Replacement Parts |
| 1 | Top sub |
| 2 | O-ring of top sub |
| 3 | Breakout Ring |
| 4 | Check Valve |
| 5 | Spring |
| 6 | Compression Buffer |
| 7 | Air Distributor |
| 8 | Internal cylinder |
| 9 | Piston |
| 10 | External cylinder |
| 11 | Guide sleeve |
| 12 | O-ring of stop ring |
| 13 | Stop ring |
| 14 | Breakout ring |
| 15 | Drive chunk |
| 16 | Drill bit |
DHD1120 Hammer Specification:
| Drilling Diameter(mm) | Hammer Length Without Bit(mm) | External Diameter(mm) | Weight Without Bit(kg) | ||||
| φ305-φ445 | 1900 | 275mm | 480 | ||||
| Working Pressure(Mpa) | Air Consumption(m³/min) | ||||||
| 2.0-3.5 Mpa | 1.0Mpa: 30 m³/min | 1.8Mpa: 56 m³/min | 2.4Mpa: 78 m³/min | ||||
| Impact rate at 17 bar | Recommended Rotation Speed | Connection Rod Thread | Bit Shank | ||||
| 16HZ | 15-25 r/min. | API 6 5/8'' Reg | DHD1120 | ||||
Part Number | Product Code and Brief Description | Flushing Holes | Diameter (mm) | Weight (kg) | Gauge Buttons ( No.x mm) | Front Buttons ( No. x mm) | DTH Hammer |
4148301682 | DTH65PQ | 1 | 68 - 72 | 1.5 | 4 x12 | 3 x 12 | DTH65 |
4148301683 | DTH75PQ | 3 | 75 - 77 | 2.4 | 5 x 12 | 3 x 12 | DTH70 |
4148301684 | DTH76PQ | 2 | 76 - 78 | 2.5 | 5 x 12 | 3 x 12 | DTH76 |
4148301685 | DTH76-78 | 2 | 78 - 82 | 2.6 | 5 x 12 | 3 x 12 | DTH76 |
4148301686 | DTH80PQ | 3 | 82 - 84 | 3 | 5 x 12 | 6 x 12 | DTH80, DTH80X |
4148301687 | DTH90A | 3 | 90 - 95 | 3.6 | 6 x 14 | 4 x 12 | DTH80, DTH80X |
4148301688 | DTH80XD-90 | 3 | 90 - 95 | 3.4 | 6 x 12 | 4 x 12 | DTH80XD |
4148301689 | DTH80-II-80 | 3 | 80 - 82 | 3 | 5 x 12 | 4 x 12 | DTH80-II |
4148301690 | DTH90B | 3 | 90 - 95 | 3.8 | 6 x 14 | 4 x 12 | DTH90, DTH90-I |
4148301691 | DTH90T1 | 2 | 90 - 95 | 3.6 | 6 x 14 | 1x12,3x12 (Spherical) | DTH90, DTH90-I |
4148301692 | DTH90T2 | 2 | 90 - 95 | 3.8 | 6 x 14 (Spherical) | 4 x 12 (Spherical) | DTH90, DTH90-I |
4148301693 | DTH90T3J | 3 | 90 - 95 | 3.6 | 6 x 14 (Ballistic) | 4 x 12 (Ballistic) | DTH90, DTH90-I |
