KSQ DTH hammer button bits include high air pressure and low air
pressure two series,with advanced design concept, better
wear-resistance,better impact-resistance, higher drilling speed,
longer service life, widely used in large-scale open pit mining,
quarry and other large-scale construction projects.
Different face style makes DTH bits suitable for various rock
conditions.
Flat face: This is an universal design, especially for hard and abrasive
rock formation. So typically, flat face with hemi-spherical buttons
design is the most popular choice.
Convex face: A classic design for soft to medium hard rock formation which is
not so abrasive. This design have very excellent penetration rate
but poor in hole deviation if rocks are hard.
Concave face: Medium hard to hard rock formations which is less abrasive and
fractured. Especially for deep hole drilling, excellent control
over hole deviation.
DGR face: A special design for hard or very hard rock conditions, double
gauge row buttons provide very excellent ware-resistance and very
longer life time. It is usually used for some bigger diameter DTH
bits.
Besides, we are manufacturing the DTH bits with various shanks so
they can be compatible with different DTH hammers.
DTH BIT DETAILS:
QL50 High Air Pressure DTH Bit Specification:
| QL50 Spherical button/Concave face |
| 152 | 6 | 4×16,3×16 | 8×16 | 2 | 26.8 | 4148301471 |
| 155 | 6 1/8 | 4×16,3×16 | 8×16 | 2 | 27 | 4148301418 |
| 159 | 6 1/6 | 4×16,4×16 | 8×16 | 2 | 27.8 | 4148301419 |
| 165 | 6 3/4 | 4×16,4×16 | 8×16 | 2 | 28 | 4148301420 |
| 172 | 6 | 4×18,4×18 | 8×18 | 2 | 30 | 4148301421 |
| 178 | 7 | 4×18,4×18 | 8×18 | 2 | 32 | 4148301422 |
| 190 | 7 1/2 | 3×18,3×18 | 8×18 | 3 | 33 | 4148301423 |
| 203 | 8 | 4×18,4×18 | 8×18 | 3 | 35 | 4148301424 |
We can also provide related products DTH button bits, ODEX,
symmetric overburden systems, slide block drilling systems, etc and
DTH drilling pipes for various thread API REG, API IF, BECO, etc
QL DTH HAMMER DETAILS:
| DTH hammer type | QL40 | QL50 | QL60 | QL80 |
| Length(less bit) mm | 1097 | 1156 | 1212 | 1465 |
| Weight(less bit) kg | 41 | 73 | 95 | 188 |
| External diameter mm | Φ99 | Φ126 | Φ142 | Φ180 |
| Bit shank | QL40 | QL50 | QL60 | QL80 |
| Hole range(mm) | Φ110-135 | Φ135-155 | Φ155-190 | Φ195-254 |
| Connection thread | API 2 3/8"Reg | API 3 1/2"Reg | API 3 1/2"Reg | API 4 1/2"Reg |
| Working pressure | 1.0-2.0Mpa | 1.0-2.3Mpa | 1.5-2.5Mpa | 1.5-3.0Mpa |
| Impact rate at 1.5-1.7Mpa | 27Hz | 25Hz | 23Hz | 20Hz |
| Recommended Rotation speed | 20-40r/min | 25-40r/min | 20-30r/min | 15-25r/min |
| Air consumption | 1.0Mpa | 6.0m3/min | 9.0m3/min | 10.0m3/min | 15.0m3/min |
| 1.8Mpa | 10.0m3/min | 15.0m3/min | 20.0m3/min | 26.0m3/min |
| 2.4Mpa | 15.0m3/min | 23.0m3/min | 28.5m3/min | 34.0m3/min |
