Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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8" Atlas Copco Down The Hole Mission80 M80 DTH Button Drill Bits For Rock Drilling
Product specifications: Mission80 dth bits
| 8" hammer DTH bits shank | Bit Dia. | No. Air Holes | Gauge Buttons | Front Buttons | Weight (Kg) | Part No. | |
| mm | inch | ||||||
| DHD380/COP84 | 195 | 7 11/16 | 3 | 9×φ18 | 9×φ16 | 32.0 | DHD380-195 |
| 203 | 8" | 2 | 9×φ18 | 10×φ18 | 41.0 | DHD380-203 | |
| 216 | 8 1/2" | 2 | 10×φ18 | 12×φ16 | 49.0 | DHD380-216 | |
| 254 | 10" | 3 | 11×φ18 | 17×φ16 | 71.0 | DHD380-254 | |
| 305 | 12" | 4 | 12×φ18 | 29×φ16 | 95.0 | DHD380-305 | |
| SD8 | 195 | 7 11/16 | 3 | 9×φ18 | 9×φ16 | 32.0 | SD8-195 |
| 203 | 8" | 3 | 9×φ18 | 9×φ18 | 41.0 | SD8-203 | |
| 216 | 8 1/2" | 2 | 10×φ18 | 12×φ16 | 49.0 | SD8-216 | |
| 254 | 10" | 3 | 11×φ18 | 17×φ16 | 71.0 | SD8-254 | |
| 305 | 12" | 4 | 12×φ18 | 29×φ16 | 95.0 | SD8-305 | |
| QL80 | 195 | 7 11/16 | 3 | 9×φ18 | 9×φ16 | 32.0 | QL80-195 |
| 203 | 8" | 3 | 9×φ18 | 9×φ18 | 41.0 | QL80-203 | |
| 216 | 8 1/2" | 2 | 10×φ18 | 12×φ16 | 49.0 | QL80-216 | |
| 254 | 10" | 3 | 11×φ18 | 17×φ16 | 71.0 | QL80-254 | |
| 305 | 12" | 4 | 12×φ18 | 29×φ16 | 95.0 | QL80-305 | |
| Mission80 | 195 | 7 11/16 | 3 | 9×φ18 | 9×φ16 | 35.0 | M80-195 |
| 203 | 8" | 3 | 9×φ18 | 9×φ18 | 40.0 | M80-203 | |
| 216 | 8 1/2" | 2 | 10×φ18 | 12×φ16 | 54.0 | M80-216 | |
| 254 | 10" | 3 | 11×φ18 | 17×φ16 | 57.0 | M80-254 | |
| 305 | 12" | 4 | 12×φ18 | 29×φ16 | 77.0 | M80-305 | |
Product photos
We take pride in being the only manufacturers in China that has a diverse line of DTH bits that range from 3"-47"(76mm~1200mm)in diameter with most the leading hammer shanks.
Made from high quality alloy steel and advanced heat-treatment, Sollroc bits are ensured extreme protection against wear and fatigue.They're also available in four different bit-head designs-Convex,Flat,Concave and Drop center face,and four different inserts-Spherical,Ballistic,Semi-Ballistic,Two-Step to tackle any challenge and rock formations
Bit Face Selection of DTH Bit
| Face Shape | Applictions | Typical formations |
| Flat | Hard and abrasive formations,all around. | Granite,hard limestone |
| Concave | Medium hard to hard formations.Less abrasive,fractured formations.Excellent control over hole deviation. | Granite,hard limestone,basalt |
| Convex | Soft to medium hard rock.Non abrasive formations.High penetration rate. | Limestone,hard limestone,shale |
| Drop Center | Soft to medium hard and fractured formations. | Limestone,shale |
Sollroc is recognized as one of the professional manufacturer and supplier of high performance rock drilling tools like: DTH hammers and bits, RC hammers and bits, DTH drill rods and top hammer drilling tools with more 10 years of experience. Our tools are widely used in different drilling applications including mining, quarrying, water well drilling, geotechnical industries and etc.