Drilling hole from 165 to 190mm DHD360 COP64 D65 6 inch Hammers For
mining and construction
FEATURES
MIROC offers one of the most complete lines of down the hole drills
and downhole bits ranging from 3.5” – 36” (89mm – 914mm) which are
designed for peak performance in all rock drilling applications
including but not limited to; foundation & geotechnical drilling,
blasthole drilling in quarries & mines, waterwell & geothermal
boreholes, oil & gas underbalanced drilling, horizontal directional
drilling, and utility transmission & distribution rock sockets.
Selecting the right hammer
The optimum range of hole size for DTH drilling is 90 mm (3.5”) to
254 mm (10”). Smaller holes are generally drilled using tophammer
drill rigs, and larger holes generally use rotary drill rigs.
Advantage
• Industry leading steerability
• Outstanding rate of penetration
• Simple design allows for field maintenance
• Reduced air requirement results in lower cost per foot
• More efficient and durable internal design
• High frequency operation of rock drills provides less vibration
Technical Manual of DTH Hammer
Low Pressure DTH Hammer | Model | Drilling Diameter (mm) | Hammer Length (mm) | External Diameter (mm) | Working Pressure (Mpa) | Air Consumption (m3/min) | Torque (N.m) | Impact Frequency (n/min) |
| 1 | DTH65B | ø68 - 70 | 745 | ø61.2 | 0.5 - 0.7 | 2.5 | 51 | ≥810 |
| 2 | DTH70 | ø72 - 74 | 803 | ø67.2 | 0.5 - 0.7 | 3 | 70 | ≥810 |
| 3 | DTH76 | ø74 - 76 | 766 | ø67.2 | 0.5 - 0.7 | 3 | 75 | ≥810 |
| 4 | DTH80 | ø80 - 82 | 796 | ø72 | 0.5 - 0.7 | 5 | 81 | ≥800 |
| 5 | DTH80-II | ø75 - 80 | 756 | ø67 | 0.5 - 0.7 | 3 | 75 | ≥810 |
| 6 | DTH80X | ø80 - 82 | 756 | ø72 | 0.5 - 0.7 | 4.5 | 75 | ≥800 |
| 7 | DTH80XD | ø80 - 90 | 735 | ø74 | 0.5 - 0.7 | 5.5 | 85 | ≥800 |
| 8 | DTH90 | ø90 - 130 | 796 | ø80.2 | 0.5 - 0.7 | 6 | 110 | ≥820 |
| 9 | DTH90-I | ø90 - 130 | 796 | ø80 | 0.5 - 0.7 | 5.5 | 120 | ≥820 |
| 10 | DTH110 | ø110 - 150 | 838 | ø98 | 0.5 - 0.7 | 11 | 180 | ≥830 |
| 11 | DTH150 | ø150 - 185 | 908 | ø137 | 0.5 - 0.7 | 17 | 340 | ≥800 |
| 12 | DTH170 | ø170 - 250 | 1023 | ø156 | 0.5 - 0.7 | 19.5 | 420 | ≥790 |
High Pressure DTH Hammer | Model | Drilling Diameter (mm) | Hammer Length (mm) | External Diameter (mm) | Working Pressure (Mpa) | Air Consumption (m3/min) | Torque (N.m) | Impact Frequency (n/min) |
| 1 | DTH330 | ø82 - 85 | 867 | ø71 | 0.8 - 2.1 | 3 - 12 | 150 | ≥800 |
| 2 | DTH335 | ø90 - 93 | 908 | ø81 | 0.8 - 2.1 | 4.3 - 14.2 | 205 | 950 - 1500 |
| 3 | DTH340 | ø105 - 130 | 1052 | ø92 | 0.8 - 2.1 | 3.5 - 18 | 304 | ≥800 |
| 4 | DTH345 | ø105 - 130 | 1034 | ø98 | 0.8 - 2.1 | 3.5 - 15 | 335 | ≥800 |
| 5 | DTH345K | ø110 - 130 | 994 | ø98 | 0.8 - 2.1 | 3.5 - 15 | 400 | ≥820 |
| 6 | DTH350 | ø130 - 152 | 1387 | ø114 | 0.8 - 2.1 | 5.7 - 18 | 590 | 810 - 1470 |
| 7 | DTH355 | ø130 - 152 | 1220 | ø124 | 0.8 - 2.1 | 6.5 - 18 | 700 | 810 - 1500 |
| 8 | DTH355K | ø130 - 152 | 1098 | ø124 | 0.8 - 2.1 | 4.5 - 18 | 800 | 840 - 1500 |
| 9 | DTH360 | ø152 - 305 | 1450 | ø136 | 0.8 - 2.1 | 8.5 - 25 | 822 | 820 - 1475 |
| 10 | DTH380 | ø203 - 350 | 1551 | ø181 | 0.8 - 2.1 | 12 - 31 | 1560 | 860 - 1510 |
| 11 | DTH3120 | ø302 - 508 | 1934 | ø275 | 0.8 - 2.1 | 14 - 45 | 2410 | 980 - 1446 |
Specification of DTH Bits
| Low Air Pressure DTH Bits |
| Type | Diameter(mm) | Buttons | Flushing Holes |
| Front(No*mm) | Gauge(No.*mm) |
| 1 | CIR80 | 80 | 2*12, 2*12 | 6*13 | 2 |
| 2 | CIR90 | 90 | 4*12 | 6*14 | 3 |
| 3 | 93 | 4*12 | 6*14 | 3 |
| 4 | 95 | 4*12 | 6*14 | 3 |
| 3" High Pressure DTH Bits |
| Type | Diameter(mm) | Buttons | Flushing Holes |
| Front(No*mm) | Gauge(No.*mm) |
| 1 | DHD3.5 / M30 | 90 | 4*12, 2*12 | 8*12 | 2 |
| 2 | 95 | 4*12, 2*12 | 8*12 | 2 |
| 3 | 100 | 4*13, 2*13 | 8*13 | 2 |
| 4 | 105 | 4*14, 2*14 | 8*14 | 2 |
| 4" High Pressure DTH Bits |
| Type | Diameter(mm) | Buttons | Flushing Holes |
| Front(No*mm) | Gauge(No.*mm) |
| 1 | DHD340 / SD4 / QL40 / M40 | 110 | 4*14, 2*14 | 8*14 | 2 |
| 2 | 115 | 4*14, 2*14 | 8*14 | 2 |
| 3 | 121 | 4*14, 2*14 | 8*14 | 2 |
| 4 | 127 | 4*14, 3*14 | 8*14 | 2 |
| 5 | 130 | 4*14, 3*14 | 8*16 | 2 |
| 6 | 133 | 4*14, 3*14 | 8*16 | 2 |
| 5" High Pressure DTH Bits |
| Type | Diameter(mm) | Buttons | Flushing Holes |
| Front(No*mm) | Gauge(No.*mm) |
| 1 | DHD350 / SD5 / QL50 / M50 | 130 | 3*14, 4*14 | 9*16 | 2 |
| 2 | 133 | 3*14, 4*14 | 9*16 | 2 |
| 3 | 140 | 3*16, 4*16 | 9*16 | 3 |
| 4 | 146 | 3*16, 4*16 | 9*16 | 3 |
| 5 | 152 | 3*16, 5*16 | 9*18 | 3 |
| 6" High Pressure DTH Bits |
| Type | Diameter(mm) | Buttons | Flushing Holes |
| Front(No*mm) | Gauge(No.*mm) |
| 1 | DHD360 / SD6 / QL60 / M60 | 152 | 4*16, 4*16 | 8*18 | 2 |
| 2 | 155 | 4*16, 4*16 | 8*18 | 2 |
| 3 | 159 | 4*16, 4*16 | 8*18 | 2 |
| 4 | 165 | 4*16, 4*16 | 8*18 | 2 |
| 5 | 172 | 4*18, 4*18 | 8*18 | 2 |
| 6 | 178 | 4*18, 4*18 | 8*18 | 2 |
| 7 | 190 | 3*18, 5*18 | 9*18 | 3 |
| 8 | 203 | 3*18, 6*18 | 9*18 | 3 |
| 8" High Pressure DTH Bits |
| Type | Diameter(mm) | Buttons | Flushing Holes |
| Front(No*mm) | Gauge(No.*mm) |
| 1 | DHD380 / SD8 / QL80 / M80 | 200 | 6*18, 6*18 | 9*18 | 3 |
| 2 | 203 | 6*18, 6*18 | 9*18 | 3 |
| 3 | 216 | 6*18, 6*18 | 9*18 | 3 |
| 4 | 219 | 6*18, 6*18 | 9*18 | 3 |
| 5 | 222 | 6*18, 9*18 | 9*18 | 3 |
| 6 | 226 | 3*18, 5*18 | 12*18, 6*18 | 3 |
| 7 | 229 | 3*18, 5*18 | 12*18, 6*18 | 3 |
| 8 | 241 | 3*18, 5*18 | 12*18, 6*18 | 3 |
| 9 | 251 | 3*18, 6*18 | 12*18, 6*18 | 3 |
| 10 | 254 | 3*18, 7*18 | 12*18, 6*18 | 3 |
| 11 | 270 | 3*18, 8*18 | 12*18, 6*18 | 3 |
| 12 | 305 | 6*18, 8*18 | 12*18, 9*18 | 3 |
Company Information:
The MIROC® Rock Drilling Tools product line by KSQ Tecnologies
(Beijing) Co.Ltd. is the result of years of advanced engineering,
precision manufacturing,and dedication to the use of high quality
materials.MIROC® Rock Drilling Tools are used by many drilling
professionals related tomining, construction, tunneling, and
quarrying projects around the globe.
KSQ Technologies (Beijing) Co. Ltd. provides exceptional technical
know-how in development, production, and application. The company
has adopted advanced manufacturing processes to ensure high quality
steels and tungsten carbide inserts for its rock drilling
accessories. Its personnel understand clients’ drilling needs, and
have the service skills to recommend the right drilling tools for
the job. Its experienced product developers can also create custom
tools. Furthermore, the company’s development team introduces
innovative products each year – tools that are rigorously tested in
the field and proven to perform beyond industry expectations.
MIROC® Rock Drilling Tools include:
Top Hammer Drilling Tools
Down-the-hole (DTH) Drilling Tools
PDC Bits
Tricone Bits
