
12" 13" 14" 15"DTH Hammer Bits SD12 DTH Bit Rock Drill Bits For
Drilling
Product specifications: SD12 DTH bits
Drill Bit | Bit Dia.(mm) | NO.Air Holes | Gauge Buttons | Front Buttons | Weight(Kg) | Part No. |
DHD1120 | 305 | 4 | 12*Φ18 | 36*Φ16 | 152 | DHD1120-305 |
311 | 4 | 12*Φ18 | 36*Φ16 | 157 | DHD1120-311 | |
330 | 4 | 16*Φ18 | 42*Φ16 | 165 | DHD1120-330 | |
356 | 4 | 16*Φ19 | 42*Φ16 | 178 | DHD1120-356 | |
381 | 4 | 16*Φ19 | 42*Φ18 | 198 | DHD1120-381 | |
SD12 | 305 | 4 | 12*Φ18 | 36*Φ16 | 156 | SD12-305 |
311 | 4 | 12*Φ18 | 36*Φ16 | 168 | SD12-311 | |
330 | 4 | 16*Φ18 | 42*Φ16 | 180 | SD12-330 | |
356 | 4 | 16*Φ19 | 48*Φ16 | 191 | SD12-356 | |
381 | 4 | 16*Φ19 | 48*Φ18 | 200 | SD12-381 | |
NUMA120 | 305 | 4 | 12*Φ18 | 36*Φ16 | 152 | N120-305 |
311 | 4 | 12*Φ18 | 36*Φ16 | 158 | N120-311 | |
330 | 4 | 16*Φ18 | 42*Φ16 | 165 | N120-330 | |
356 | 4 | 16*Φ19 | 48*Φ16 | 178 | N120-356 | |
381 | 4 | 16*Φ19 | 48*Φ18 | 195 | N120-381 | |
NUMA125 | 305 | 4 | 12*Φ18 | 36*Φ16 | 170 | N120-305 |
311 | 4 | 12*Φ18 | 36*Φ16 | 173 | N120-311 | |
330 | 4 | 16*Φ18 | 42*Φ16 | 182 | N120-330 | |
356 | 4 | 16*Φ19 | 48*Φ16 | 191 | N120-356 | |
381 | 4 | 16*Φ19 | 48*Φ18 | 200 | N120-381 |
The characteristics of high air pressure DTH Button Bit:
1. Deliver maximum energy to drilling bit, fast drilling speed and
low air consumption due to inner structure of HD series DTH hammer
designed according to newest rock drilling theory.
2. Smooth performance and long service life of HD series DTH hammer
due to high quality alloy steel materials and advanced processing
technology adapted.
3. Low problem rate and easy to maintenance due to simple ,
reliable and easy assemble and disassemble inner structure of
hammer.
4. Easy to depart bit from hammer due to multi-head thread
connecting chuck and cylinder of hammer.
5. Interchangeable with DTH bit and dill pipe manufactured by Atlas
copco and Ingersoll-rand.
Bit face shape selection:
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock
formations. Low to medium air pressures. Maximum hole deviation
control.
2. Concave Face
The all-round application bit face specifically for medium hard and
homogenerous rock formations. Good hole deviation control and good
flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to
medium air pressures. It is the most resistance to steel wash, and
may reduce the load and wear on the gauge buttons, but poor hole
deviation control.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in
medium to hard rock formations. Designed for high air pressures and
good resistance to steel wash step gauge bit.
5. Flat Face Bit
This kind of face shape is suitable for hard to very hard and
abrasive rock formations in applications with high air pressures.
Good penetration rates an resistance to steel wash.
Carbide button shape selection:
1. Domed/Round Button
2. Parabolic/Semi-Ballistic Buttons
3. Ballistic Button
4. Sharp Button
5. Flat Button
Changsha Sollroc Engineering Equipments Co., Ltd
Sollroc, with more than 10 years of experience, is one of the prefessional manufacturer and supplier of high performance rock drilling tools like, DTH hammers and bits, RC hammers and bits, ODEX system, symmetrix system, DTH drill rods and top hammer drilling tools, our tools are widely used in different drilling applications including mining, quarring, water well drilling and etc.
We can provide specifications:
DTH hammers range: 3"-12’’
DTH bits range: 90mm - 600mm
DTH opener bits: 4"-10" from 82/165mm to 445/660mm
Shanks : BR series, DHD, COP, Mission, Mach; SD; QL; Numa.
Tophammer tools
Thread: R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, GT60,GT68
Button bit face design: Flat face, drop centre,
Button bit body type: Normal and Retrac
Button bits diameters: 45mm-152mm