QL40 high pressure 4 inch DTH drill bit diameter 115mm with foot
valve
Product Description
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.
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
Our DTH hammer and bits are compatible with CIR, DHD, QL,SD,Mission, etc. series of Atlas
and etc. They are with high efficiency, low failure rate and long
service life. They are with high efficiency, low failure rate and
long service life, which can realize efficient and economical
drilling even for all kinds of high hardness, high abrasive rocks
and other harsh conditions.
Products Parameters
Specification of other DTH Bits:
| Drill Bit | Bit Dia.(mm) | NO.Air
Holes | Gauge
Buttons | Front
Buttons | Weight(Kg) | Part No. |
D45
(DHD340,Cop44) | 105 | 2 | 6×φ14 | 5×φ13 | 8.5 | D45—105 |
| 110 | 2 | 7×φ14 | 6×φ13 | 8.8 | D45—110 |
| 115 | 2 | 8×φ14 | 7×φ13 | 9.0 | D45—115 |
| 120 | 2 | 8×φ14 | 8×φ13 | 9.8 | D45—120 |
| 127 | 3 | 9×φ14 | 9×φ14 | 11.0 | D45—127 |
| SD4 | 105 | 2 | 6×φ14 | 5×φ13 | 9.0 | SD4—105 |
| 110 | 2 | 7×φ14 | 6×φ13 | 9.5 | SD4—110 |
| 115 | 2 | 8×φ14 | 7×φ13 | 9.8 | SD4—115 |
| 120 | 2 | 8×φ14 | 8×φ13 | 11.5 | SD4—120 |
| 127 | 3 | 9×φ14 | 9×φ14 | 12.3 | SD4—127 |
| QL40 | 105 | 2 | 6×φ14 | 5×φ13 | 9.0 | QL40—105 |
| 110 | 2 | 7×φ14 | 6×φ13 | 9.2 | QL40—110 |
| 115 | 2 | 8×φ14 | 7×φ13 | 9.5 | QL40—115 |
| 120 | 2 | 8×φ14 | 8×φ13 | 10.3 | QL40—120 |
| 127 | 3 | 9×φ14 | 9×φ14 | 11.5 | QL40—127 |
| Mission40 | 105 | 2 | 6×φ14 | 5×φ13 | 6.0 | M40—105 |
| 110 | 2 | 7×φ14 | 6×φ13 | 6.2 | M40—110 |
| 115 | 2 | 8×φ14 | 7×φ13 | 6.6 | M40—115 |
| 120 | 2 | 8×φ14 | 8×φ13 | 7.0 | M40—120 |
| 127 | 3 | 9×φ14 | 9×φ14 | 7.4 | M40—127 |
Different face style makes DTH bit is 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.
How to order
Shank Type + Diameter + Face Design + Button Configuration
Company Information
The MIROC® Rock Drilling Tools product line by KSQ Technologies (Beijing) Co.Ltd. is the result of years of advanced engineering, precision
manufacturing, and dedication to the use of high-quality materials. Rock Drilling Tools are used by many drilling professionals related
to mining, construction, tunneling, and quarrying projects around
the globe.
MIROC® Rock Drilling and Ground Support Tools include:
1. Low pressure DTH Hammer
2. Medium pressure DTH Hammer
3. High pressure DTH Hammer
4. DTH Drill bit
5. DTH Drill pipe
