8 inch DTH Button Bits ND85 series
Description
DTH bit is the tool cutting rocks, and subject to severe stress
from the striking piston as well as from the abrasive cuttings
passing the bit at high velocity. When selecting the right bit for
optimum performance you have to balance penetration against bit
life. On occasion you can successfully sacrifice bit life for
penetration, remember the rule of thumb that states that a 10%
increase in penetration covers at least a 20% loss in bit life.
DTH Button Bits:
1, Direct sale
2, reasonable price
3. high efficiency
Using:
tungsten carbide button bit drilling series
Suitable for cutting, drilling various hard Non-ferrous materials,
such as marble, granite, glass, ceramic, hard concrete and brick.
Advantage of Our DTH drill bits
1. Anti-stuck protection can aoid the ruined of the motor and the
damage of reducer
2. high efficiency
3. low cost
4. stable performance
Applications
It is mainly used in geological exploration, coal mine, water
conservancy and hydropower, highway, railway, bridge, construction
and so on.
Specifications
| 8” Middle Air Pressure DTH Bits |
| THE Drill Head Diameter(mm) | Spline Key Number | NO.Air Holes | Gauge Buttons | Front Buttons | Weight(KG) |
| 195 | - | 3 | 9XØ18 | 9XØ16 | 33.0 |
| 203 | - | 2 | 10XØ18 | 13XØ16 | 40.0 |
| 216 | - | 2 | 10XØ18 | 14XØ16 | 49.0 |
| 254 | - | 3 | 12XØ18 | 17XØ16 | 71.0 |
| 305 | - | 4 | 12XØ18 | 29XØ16 | 95.0 |
| WE can design and manufacture according to customers requirement of
the bit diameter,the NO.of air holes,carbide buttons and the face
shape. |
Feature Advantage
1. Long life span: the wear-resist of tungsten carbides is 10-20
times higher compared with other similar materials, which greatly
extends the life of the carbide bits;
2. High drilling efficiency: the high grade hardness of the
carbides can always stay sharp, which could increase the drilling
speeds too;
3. New Diamond's bits are widely used in different rock formations
like carbonate rock,limestone,chalk rock, clay rock,siltstone and
sandstone;
4. It can greatly reduce the drilling cost, because of its high
drilling speed and life span, which reduces the times to changes
bits in the drilling service.
The appearance of the picture is different from that of the actual
product, and the actual product is the standard.
