Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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Product description
In DTH drilling, the drill string rotates while the drilling hammer continuously strikes down into the rock. Inside the hammer, a piston powered by compressed air gives the drill bit its striking power. This combined with the rotational movement means the rock is crushed in a very efficient manner.
Sollroc can supply DTH hammer and bits from 2"-18" with type DHD, SD, QL, Mission,Numa, etc.
6 in DTH bit-The data is referenced by DHD360 concave face bit.
| Bit diameter | Flushing holes No.*Button Dia. mm | No.*Button Dia. mm |
Weight (kg) |
Part No. | ||
| mm | inch | Gauge Buttons | Front Buttons | |||
| 152 | 6” | 2*26 | 8*18 | 4*16+4*14 | 23 | HD65-152 |
| 156 | 6 1/8” | 2*26 | 8*18 | 4*16+4*14 | 23.5 | HD65-156 |
| 160 | 6 5/16” | 2*26 | 8*18 | 4*16+4*14 | 23.5 | HD65-160 |
| 165 | 6 1/2” | 2*26 | 8*18 | 8*16 | 24 | HD65-165 |
| 171 | 6 3/4” | 2*26 | 8*18 | 10*16 | 25 | HD65-171 |
| 185 | 7 1/4” | 3*22 | 9*18 | 10*16 | 27 | HD65-185 |
| 190 | 7 1/2” | 2*26 | 10*18 | 13*16 | 28 | HD65-190 |
| 203 | 8” | 2*26 | 10*18 | 14*16 | 31 | HD65-203 |
Product features
Strict quality controlling
Selected high quality special steels and carbide
Produced by CNC machines
Simple and reasonable design, Low problem rate
Low air consumption, smooth drilling, Maximum impact power, High penetration rate
| Hammer inch | Bits diameter | Shank | |
| Metric | Inch | ||
| 1" | 64mm-70mm | 2 1/2"-2 3/4" | BR1 |
| 2" | 70mm-95mm | 2 3/4"-3 3/4" | MACH20/BR2 |
| 3" | 90mm-102mm | 3 1/2"-4" | COP32/COP34/MACH303 M30/DHD3.5/BR3 |
| 4" | 105mm-152mm | 4 1/8"-6" | COP44/DHD340/MACH44 SD4/M40/QL40 |
| 5" | 133mm-165mm | 5 1/4"-6 1/2" | COP54/DHD350R/MACH50 SD5/M50/QL50/BR5 |
| 6" | 152mm-254mm | 4 1/8"-10" | COP64/DHD360/SD6 M60/QL60/Bulroc BR6 |
| 8" | 203mm-330mm | 8"-13" | COP84/DHD380/SD8 QL80/M80 |
| 10" | 254mm-380mm | 10"-15" | SD10 NUMA100 |
| 12" | 305mm-508mm | 12"-20" | DHD1120/SD12 NUMA120/NUMA125 |
Product advantages
It has the advantage of high flatness, smooth hole wall, high rigid of drill rod and hammer, independent of high axial thrust, no limit of drilling depth, low cost of devices and easiness to maintain. At the drilling hole of dia.105mm-dia.254mm, a plenty of the DTH drilling tools are used.
The method is also excellent both environmentally and socially because it produces far less noise and vibration than many other drilling methods, making it a widely used drilling method in cities and other populated areas.
Detailed pictures
Packaging and shipping
Packaging: carton+plywood case, or as request.
Shipping: by air, by sea, by express, as request.