High Air Pressure 8'' QL80 Down The Hole Hammer For Blasting
Drilling
Product description
DTH drilling is a percussion system driving a piston inside hammer
body with up and down motion by compressed air and transmitting an
intensive percussion energy to the bit to enable the drilling by
crushing the rock. Drilling method by DTH hammer exerts high
drilling performance especially for drilling hard rock and
contributes for shortening work schedule. Hence, this method is
widely utilized for foundation work, landslide prevention work,
quarrying services, marine civil work, etc.
Product Advantages:
1. By using the latest rock drilling theory, optimizing the inside
structure and the size of the air distribution, to make the DTH
Hammer obtain the optimal energy transfer and make it achieve
faster drilling speed and lower air consumption.
2. For such projects as the drill bit break, retrieving very
difficult, we specially designed a safe and reliable anti-shedding
device for the bit.
3. The check valve can be replaced to the one with bigger ail
controlling hole to provide more efficient cuttings discharge.
4. The top sub and the drive chuck have special thread, which can
achieve an easier disassemble.
DTH Hammer specification:
Model: DHD380, COP84, SD8, QL80
| | DHD380
COP84 | SD8 | QL80 |
| Length(less bit) | 1492mm | 1463mm | 1465mm |
| Weight (less bit) | 188.0kg | 192.0kg | 182.00kg |
| External diameter | 180mm | 180mm | 185mm |
| Bits shank | DHD380
COP84 | SD8 | QL80 |
| Bits diameter | 200-279mm
7 7/8" - 11" |
200-279mm
7 7/8" - 11" | 200-279mm
7 7/8" - 11" |
| Connection thread | API 4 1/2" Reg | API 4 1/2" Reg | API 4 1/2" Reg |
| Air pressure | 1.0-2.5Mpa | 1.0-2.5Mpa | 1.0-2.5Mpa |
Face shape Features
Drop Center
For high penetration rates in soft to medium hard and fissured rock
formations. Low to medium air pressures. Maximum hole deviation
control.
Concave Face
The all-round application bit face special for medium hard and
homogenerous rock formations. Good hole deviation control and good
flushing capacity.
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.
Flat Face
This kind of face shape is suitable for very hard and abrasive rock
formations in applications with high air pressures. Good
penetration rates an resistance to steel wash.
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.
Product application
At present, DTH drilling tool is 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.
DTH is one of the most efficient ways of drilling rock, using a
rapid hammer action to break the rock into sizeable chips which are
then evacuated from the bore hole by the air exhausted from the DTH
Hammer. The technique provides fast drilling of accurately aligned,
straight and clean holes in most ground conditions.
Company informaiton
At sollroc, customer satisfaction is our top priority. Our sales
team takes a proactive approach in meeting customers’ needs. We
take the time to get to know you and learn about your operations so
we can better assist you. We strive to meet customers’ needs by
supplying the tools and equipment you need when you need them,
providing product support, and following through with excellent
customer service every step of the way.
