The QL50-130mm DTH (Down-the-Hole) drill bit is an industrial-grade drill designed specifically for use with the 5-inch QL50 impactor. Its diameter is typically 130mm (5 1/8"). It is widely used in hard rock drilling operations such as mining, quarrying, water well drilling, and construction engineering.
Technical Specifications and Features
Applicable Diameter: QL50 series drill bits typically range in diameter from 130mm to 165mm.
Operating Pressure: Recommended for operation in high-pressure environments of 10-25 bar (1.0-2.5 MPa); some models can withstand higher impact energy.
Materials and Construction: Constructed with a high-quality alloy steel body and high-performance tungsten carbide ball teeth, forged and heat-treated to improve fatigue resistance and wear resistance.
Efficiency Performance: Under specific geological conditions, high-quality drill bits can achieve an average drilling speed of up to 30 cm/min and a service life of over 500 meters.
| QL50 Spherical button/Concave face |
| 130 |
5 1/8 |
4×14,3×14 |
8×16 |
2 |
14 |
4148301331 |
| 133 |
5 1/4 |
4×14,3×14 |
8×16 |
2 |
14 |
4148301332 |
| 140 |
5 1/2 |
4×14,4×14 |
8×16 |
2 |
15 |
4148301333 |
| 146 |
5 3/4 |
4×14,4×14 |
8×16 |
2 |
15.8 |
4148301334 |
| 152 |
6 |
4×16,4×16 |
8×18 |
2 |
18 |
4148301335 |
| QL50 Ballistic button/Convex face |
| 130 |
4 3/8 |
3×14,4×14 |
9×16 |
3 |
14 |
4148301336 |
| 133 |
4 1/2 |
3×14,4×14 |
9×16 |
3 |
14 |
4148301337 |
| 140 |
4 3/4 |
3×16,4×16 |
9×16 |
3 |
15 |
4148301338 |
| 146 |
5 |
3×16,4×16 |
9×16 |
3 |
15.8 |
4148301339 |
| 152 |
5 1/8 |
3×16,5×16 |
9×18 |
3 |
18 |
4148301340 |
| QL50 Spherical button/Flat face |
| 130 |
4 3/8 |
7×14 |
8×16 |
2 |
14 |
4148301341 |
| 133 |
4 1/2 |
7×14 |
8×16 |
2 |
14 |
4148301342 |
| 140 |
4 3/4 |
7×14 |
7×18 |
2 |
15 |
4148301343 |
| 140 |
5 |
8×14 |
9×16 |
3 |
15 |
4148301344 |
| 146 |
5 1/8 |
8×14 |
9×16 |
3 |
15.8 |
4148301345 |
| 152 |
5 1/4 |
8×16 |
9×18 |
3 |
18 |
4148301346 |
Applications
• Underground mining
• Down the hole rock drilling
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
Product Tags:
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QL50-130mm DTH Hammer Drill Button Bit with Tungsten Carbide Teeth for High-Pressure Water Well Drilling Images
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