ROSCHEN GROUP
Quality Changes The World!
Add to Cart
Numa 120 DTH Bits most reliable DTH rock drilling products in America Foundation Piling Drilling
Our commitment gives our customers the peace of mind that we’ll always be there with the industry’s best performing, most reliable DTH rock drilling products and the industry’s best service and support.
Down The Hole (DTH) Hammers, Drills and Bits
Roschen is the world’s leading designer and manufacturer of rock drilling equipment for drilling holes from 3½ – 48 inches (89 – 1219mm) in diameter.
Down-the-hole (DTH) hammer bits are used with Down-the-hole hammers for drilling holes through a wide range of rocks types. In conjunction with DTH hammers, drill hammer bits are designed with a splined drive for rotating the bit in the ground. Drill bits are available in different sizes and different styles so they can drill a wide range of hole sizes. Our variety of Down the Hole (DTH) bits is manufactured using high quality materials to provide you with a fine balance between penetration capability and bit life. We offer a comprehensive range of standard and made to order drill bits on an extensive selection of shanks with a wide variety of head designs to suit every project.
Product specifications:
| For 12" hammer | Bit Dia. | No Air Holes |
Gauge Buttons |
Front Buttons |
Weight (Kg) |
Part No. | |
| DTH bits shank | mm | inch | |||||
| DHD1120 | 305 | 12" | 4 | 12×φ18 | 36×φ16 | 152 | DHD1120-305 |
| 311 | 12 1/4" | 4 | 12×φ18 | 36×φ16 | 157 | DHD1120-311 | |
| 330 | 13" | 4 | 16×φ18 | 42×φ16 | 165 | DHD1120-330 | |
| 356 | 14" | 4 | 16×φ19 | 48×φ16 | 178 | DHD1120-356 | |
| 381 | 15" | 4 | 16×φ19 | 48×φ18 | 198 | DHD1120-381 | |
| SD12 | 305 | 12" | 4 | 12×φ18 | 36×φ16 | 156 | SD12-305 |
| 311 | 12 1/4" | 4 | 12×φ18 | 36×φ16 | 168 | SD12-311 | |
| 330 | 13" | 4 | 16×φ18 | 42×φ16 | 180 | SD12-330 | |
| 356 | 14" | 4 | 16×φ19 | 48×φ16 | 191 | SD12-356 | |
| 381 | 15" | 4 | 16×φ19 | 48×φ18 | 200 | SD12-381 | |
| NUMA120 | 305 | 12" | 4 | 12×φ18 | 36×φ16 | 152 | NUMA120-305 |
| 311 | 12 1/4" | 4 | 12×φ18 | 36×φ16 | 158 | NUMA120-311 | |
| 330 | 13" | 4 | 16×φ18 | 42×φ16 | 165 | NUMA120-330 | |
| 356 | 14" | 4 | 16×φ19 | 48×φ16 | 178 | NUMA120-356 | |
| 381 | 15" | 4 | 16×φ19 | 48×φ18 | 195 | NUMA120-381 | |
| NUMA125 | 305 | 12" | 4 | 12×φ18 | 36×φ16 | 170 | NUMA125-305 |
| 311 | 12 1/4" | 4 | 12×φ18 | 36×φ16 | 173 | NUMA125-311 | |
| 330 | 13" | 4 | 16×φ18 | 42×φ16 | 182 | NUMA125-330 | |
| 356 | 14" | 4 | 16×φ19 | 48×φ16 | 191 | NUMA125-356 | |
| 381 | 15" | 4 | 16×φ19 | 48×φ18 | 200 | NUMA125-381 |
| ROSCHEN DTH Hammers Specifications | |||||||
| Hammer Size | Bit Shank | ROSCHEN Code | Connection Thread | Suitable bit | Working pressure | Air consumption | |
| 2" | BR2 | ROS 11 ROS 22 | RD50 box | ￠70-￠90mm | 0.7-1.75Mpa | 0.7Mpa | 4.5m3/min |
| 1.0Mpa | 4m3/min | ||||||
| 1.4Mpa | 5m3/min | ||||||
| 3" | DHD3.5 | ROS 32 | API 2 3/8" Reg | ￠90-￠110mm | 1.0-1.5Mpa | 1.0Mpa | 4.5m3/min |
| COP32/COP34 | |||||||
| M30 | 1.5Mpa | 9m3/min | |||||
| 4" | DHD340 | ROS 34 | API 2 3/8" Reg | ￠110-￠135mm | 1.0-2.5Mpa | 1.0Mpa | 6m3/min |
| COP44 | |||||||
| QL40 | |||||||
| SD4 | 1.8Mpa | 10m3/min | |||||
| M40 | 2.4Mpa | 15m3/min | |||||
| 5" | DHD350 | ROS 52 ROS 54 | API 2 3/8"Reg/API 3 1/2" Reg | ￠135-￠155mm | 1.0-2.5Mpa | 1.0Mpa | 9m3/min |
| COP54 | |||||||
| QL50 | |||||||
| SD5 | 1.8Mpa | 15m3/min | |||||
| M50 | 2.4Mpa | 23m3/min | |||||
| 6" | DHD360 | ROS 62 ROS 64 | API 3 1/2" Reg | ￠155-￠190mm | 1.0-2.5Mpa | 1.0Mpa | 10m3/min |
| COP64 | |||||||
| QL60 | |||||||
| SD6 | 1.8Mpa | 20m3/min | |||||
| M60 | 2.4Mpa | 28.5m3/min | |||||
| 8" | DHD380 | ROS 82 ROS 84 | API 4 1/2" Reg | ￠195-￠254mm | 1.0-2.5Mpa | 1.0Mpa | 15m3/min |
| COP84 | |||||||
| QL80 | 1.8Mpa | 26m3/min | |||||
| SD8 | 2.4Mpa | 34m3/min | |||||
| M80/M85 | |||||||
| 10" | SD10 | ROS 100 | API 6 5/8" Reg | ￠254-￠311mm | 1.0-2.5Mpa | 1.0Mpa | 22m3/min |
| Numa100 | 1.8Mpa | 40m3/min | |||||
| ROS 100 | 2.4Mpa | 55m3/min | |||||
| 12" | DHD1120 | ROS 120 | API 6 5/8" Reg | ￠305-￠445mm | 1.0-2.5Mpa | 1.0Mpa | 30m3/min |
| SD12 | 1.8Mpa | 56m3/min | |||||
| Numa120 | 2.4Mpa | 78m3/min | |||||
| Notes: Any special size of DTH bits will be available by requests. | |||||||
| Metzke, Remet thread is available! | |||||||
Shank can be available:
1) Diameter 64mm-70mm shank Bulroc BR1
2) Diameter 70mm-95mm shank Halco MACH20, Bulroc BR2
3) Diameter 90mm-102mm shank COP32, COP34, Halco MACH303, M30, DHD3.5, Bulroc BR3
4) Diameter 105mm-152mm shank COP44, DHD340, Halco MACH44, SD4, M40, QL40, Bulroc BR4
5) Diameter 135mm-165mm shank COP54, DHD350R, COP54, Halco MACH50, SD5, M50, QL50, Bulroc BR5
6) Diameter 152mm-254mm shank COP64, DHD360, SD6, M60, QL60, Bulroc BR6
7) Diameter 203mm-330mm shank COP84, DHD380, SD8, QL80
8) Diameter 254mm-380mm shank SD10, Numa100
9) Diameter 305mm-508mm shank DHD1120, SD12, N120, N125
10) Diameter 405mm-864mm shank SD15, SD18
11) VKP80, VKP95, CIR90, CIR100, CIR110, CIR150, CIR200...
We can also provide related products DTH hammers, ODEX system, symmetric systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc.
FAQ
Terms & Conditions of Ordering:
Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damage during transportation. Also we can customize package according to your special requests.
Production time:
Generally need 15-25 days
Transportation:
By air, By Express or By sea according to your requests.
The information about dth drill bit you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Based on order quantity, normally it takes 20 days for production.
in 3 working days after receiving the advance payment
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
6. Quality & Service:
A. There will be strict inspection and testing for every order before shipping out.
B. Our sales team and Technical Support will response for your question within 24 hours through skype: ROSCHEN.TOOL and WhatsApp/Wechat: +86-13764195009
C. Free replacement will provide once the failure confirmed caused or our product quality
For more information please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ; http://www.roschendrill.com
http://www.roschenmining.com ; http://www.roschendrilling.com
http://www.roschengroup.com