8" Water Drill Bit Spherical Concave Face DHD380-203MM For Hard
Rock
Product Description
Five basic designs are available: Convex, Flat front, SpeedBit,
Concave, and Rocket bit. These are designed for specific
applications for all rock types, hardness’s and conditions.
Bit life and rate of penetration are the most important criteria in
selecting the right bit for a particular application. In most
cases, the focus is on productivity, so the fast cuttings removal
features of the SpeedBit and Convex/Ballistic designs are
preferable, to ensure the
buttons are cutting clean, with the minimum of recrushing.
Bit designs and rock types
Products Parameters
Specification of other DTH Bits:
| Drill Bit | Bit Dia.(mm) | NO.Air
Holes | Gauge
Buttons | Front
Buttons | Weight(Kg) | Part No. |
HD85
(DHD380,Cop84) | 195 | 3 | 9×φ18 | 9×φ18 | 34.0 | HD85—195 |
| 203 | 2 | 10×φ18 | 10×φ18 | 36.0 | HD85—203 |
| 216 | 3 | 12×φ18 | 12×φ18 | 45.0 | HD85—216 |
| 254 | 3 | 12×φ18 | 20×φ18 | 58.0 | HD85—254 |
| 305 | 4 | 12×φ18 | 30×φ18 | 75.0 | HD85—305 |
| SD8 | 195 | 3 | 9×φ18 | 9×φ18 | 33.0 | SD8—195 |
| 203 | 3 | 10×φ18 | 10×φ18 | 37.0 | SD8—203 |
| 216 | 4 | 12×φ18 | 12×φ18 | 42.0 | SD8—216 |
| 254 | 4 | 12×φ18 | 20×φ18 | 53.0 | SD8—254 |
| 305 | 4 | 12×φ18 | 30×φ18 | 80.0 | SD8—305 |
| QL80 | 195 | 3 | 9×φ18 | 9×φ18 | 33.0 | QL80—195 |
| 203 | 3 | 10×φ18 | 10×φ18 | 37.5 | QL80—203 |
| 216 | 4 | 12×φ18 | 12×φ18 | 42.0 | QL80—216 |
| 254 | 4 | 12×φ18 | 20×φ18 | 54.0 | QL80—254 |
| 305 | 4 | 12×φ18 | 30×φ18 | 82.0 | QL80—305 |
| Mission80 | 195 | 3 | 9×φ18 | 9×φ18 | — | M80—195 |
| 203 | 3 | 10×φ18 | 10×φ18 | — | M80—203 |
| 216 | 4 | 12×φ18 | 12×φ18 | — | M80—216 |
| 254 | 4 | 12×φ18 | 20×φ18 | — | M80—254 |
| 305 | 4 | 12×φ18 | 30×φ18 | — | M80—305 |
How to order
Shank Type + Diameter + Face Design + Button Configuration
Application
DTH hammers and bits are widely used in underground mining,
quarries, hydraulic and Hydro-Power Engineering, water well
drilling, Mineral exploration, anchoring hole drilling, geothermal
engineering, Subway excavation, another civil engineering. it has
the advantage of high flatness, smooth hole wall, high rigid of
drill rod and hammer, independent of high axial thrust, no limit of
drilling depth, low cost of devices and easiness to maintain.
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
