Changsha Adriller Machinery Co.,Ltd.
Changsha Adriller Machinery Co., Ltd. Professional drilling tools provider
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45mm Diameter Spherical Button Taper Bits Geotechnical Borehole Drilling Bit
In Top Hammer Drilling the hammer produces a percussive force on the drill rods or tubes, which is transmitted to the drill bit. The feed device is usually attached with a hinged boom to a mobile unit. The percussive system strikes the drill rod, for example 2,000-5,000 strikes per minute, and the rotation speed can be, for example, 60-200 rounds per minute. Together these elements make it possible to drill holes in the hard rock. The excess material (cuttings) is flushed up from the bottom of the hole by means of pressurized air or water. Top hammer drills are primarily used in mining, construction and quarrying of rock material. Top hammer drilling, combined with the “drill and blast” method, makes the whole excavation process extremely efficient.
Drill bit top hammer application:
Mining, quarry, road building, well hole drilling, blasting, landslide prevention, dam reinforement, anchoring, geothermal, hydrology, etc.
Feature Advantage:
Harder, stronger steel body grade
The steel body grade for the Powerbit range is chosen with utmost care to ensure the right
hardness, strength and abrasion resistance.
Improved heat treatment gives at least 10 % better fatigue strength.
And, the stronger steel holds the buttons better, reducing the risk for pop-outs.
Specifications:
| Dia.(Mm) | Thread Connection | Buttons | Air Holes | Weight(Kg) | ||
| Gauge | Front | |||||
| 51 | r32 | 4×11 | 2×9 | 1 | 2 | 1.00 |
| 64 | r32 | 6×12 | 3×11 | 3 | 1 | 1.70 |
| 64 | t38 | 6×12 | 3×10 | 1 | 2 | 1.70 |
| 76 | t38 | 7×12 | 4×10 | 3 | 1 | 3.00 |
| 76 | t45 | 8×11 | 6×10 | 4 | - | 3.00 |
| 78 | t38 | 8×11 | 5×11 | 4 | - | 3.10 |
| 89 | r32 | 8×12 | 6×11 | 4 | - | 3.50 |
| 89 | r38 | 8×12 | 6×11 | 4 | - | 3.50 |
| 89 | t45 | 8×12 | 6×11 | 4 | - | 3.50 |
| 89 | t51 | 8×12 | 6×11 | 4 | - | 4.50 |
| 102 | t45 | 8×14 | 6×13 | 4 | - | 5.50 |
| 102 | t51 | 8×14 | 6×13 | 4 | - | 5.50 |
| 105 | r38 | 8×14 | 6×13 | 4 | - | 4.50 |
| 115 | r38 | 8×14 | 7×13 | 4 | - | 4.80 |
| 115 | t51 | 8×14 | 7×13 | 4 | - | 4.80 |
| 125 | r38 | 8×14 | 8×13 | 4 | - | 5.50 |
| 127 | t51 | 8×14 | 8×13 | 4 | - | 6.50 |
Before Official Order, Please Confirm Below Informations:
(1) Thread Type
(2) Standard Or Retrac
(3) Bit Button Shape (Tip Shape)--Spherical Or Ballistic
(4) Bit Face Shape--Drop Center, Flat Face, Convex, Concave, Etc..