DTH Hammers , Drills and Bits 89 mm - 1200mm Down The Hole Drilling For Rock Drilling
1 pcs
DTH Hammers , Drills and Bits 89 mm - 1200mm Down The Hole Drilling For Rock Drilling
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Basic Infomation
Place of Origin: China
Brand Name: ROSCHEN
Certification: ISO
Model Number: 89 mm - 1200mm
High Light:

Drills and Bits COP44


DHD340 dth hammers and bits


QL40 dth hammers and bits

Payment & Shipping Terms
Packaging Details: Poly wooden box
Supply Ability: 100000 pcs
Name: Down-the-hole Drill Bit
Hammers: Numa Hammers
Bits: DTH Hammer Bits
Drill Bits: Down The Hole Drill Bits
Drilling Bits: Down Hole Hammer Drilling Bits
DTH: Down The Hole Hammers
Drilling: Down The Hole Hammer Drilling
Item: Rev Drill Down Hole Hammer
Sale: Down Hole Hammer For Sale
Brand: Puma Dth Hammers
Use: Down The Hole Drilling Method
Origin: China Down Hole Hammer And Bits
Product Description

Down The Hole (DTH) Hammers, Drills and Bits 89 mm - 1200mm Down The Hole For Rock Drilling


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 3 ½ – 48 inches (89 – 1219mm) in diameter.

Roschen Down The Hole Hammer and Down The Hole Hammer bits quality can be replaced of by atlas copco, basis on the quality grade, and in the after sales service.

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
M30 1.5Mpa 9m3/min
4" DHD340 ROS 34 API 2 3/8" Reg ¢110-¢135mm 1.0-2.5Mpa 1.0Mpa 6m3/min
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
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
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
QL80 1.8Mpa 26m3/min
SD8 2.4Mpa 34m3/min
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
Metzke, Remet thread is available!
Any special typ shank of DTH Hammer will be available by requests.


ROSCHEN DTH Bits Specifications
Hammer Size Bits diameter Shank ROSCHEN CODE
Metric Inch
1" 64mm-70mm 2 1/2"-2 3/4" BR1 ROS 11
2" 70mm-95mm 2 3/4"-3 3/4" MACH20/BR2 ROS 22
3" 90mm-102mm 3 1/2"-4" COP32/COP34/MACH303 ROS 32
M30/DHD3.5/BR3 ROS 34
4" 105mm-152mm 4 1/8"-6" COP44/DHD340/MACH44 ROS 42
SD4/M40/QL40 ROS 44
5" 133mm-165mm 5 1/4"-6 1/2" COP54/DHD350R/MACH50 ROS 52
SD5/M50/QL50/BR5 ROS 54
6" 152mm-254mm 4 1/8"-10" COP64/DHD360/SD6 ROS 62
M60/QL60/Bulroc BR6 ROS 64
8" 203mm-330mm 8"-13" COP84/DHD380/SD8 ROS 82
QL80/M80/M85 ROS 84
10" 254mm-380mm 10"-15" SD10 ROS 100
12" 305mm-508mm 12"-20" DHD1120/SD12 ROS 120
Metzke, Remet thread is available!
Any special size of DTH bits will be available by requests.


When percussion or hammer drilling the percussion mechanism is called a DTH or down the hole hammer. This drilling tool is located directly above the down hole hammer bit. The driller transfers weight to the bit through the drill pipe as well as provides some rotation. Through the use of a compressor, the pressurized air is forced to the down hole hammer. As the drilled hole gets deeper the driller adds more drill pipe to the string. The piston strikes the impact zone of the hammer bit; hammers are always used as part of a casing advancement system and can be used in reverse circulation applications. DTH hammers are common when drilling blast holes and water wells.

Since the down hole hammer piston impacts the hammer bit directly there is a very efficient transmission of energy. This means that the impact energy does not have to pass through many other components making it possible to drill fairly deep holes.

Roschen can easily provide all of your down hole tools including custom down hole hammers, percussion drilling tools, hammer drilling tools and more. There have been excellent advances in air flow technology which allows today's hammers to deliver more force to the down hole tools than ever before; this enables the piston to hit harder and more frequently. In some instances it becomes difficult to hammer drill when you are under a large column of water. Fortunately, all of Roschen DTH hammers come with adjustable chokes which greatly affect the performance of down hole tools. Another drilling supply that Roschen has helped to develop is a blow back sub which can be mounted above the down hole hammer. Roschen under water, if it becomes to difficult to push the water, the blow back sub will allow some air to escape thereby lowering the average density of the surrounding water and allowing the down hole hammer to continue operating.

Roschen Down Hole Hammers shanks types availabes:

  1. IR340 DTH hammer shank
  2. SD4 DTH hammer shank
  3. QL50 DTH hammer shank
  4. IR350 DTH hammer shank
  5. SD5 DTH hammer shank
  6. QL60 DTH hammer shank
  7. IR360 DTH hammer shank
  8. SD6 DTH Hammer shank
  9. MACH60 DTH hammer shank
  10. QL80 DTH hammer shank
  11. IR380 DTH hammer shank
  12. D8 DTH hammer shank
  13. SD10 DTH hammer shank
  14. IR310 DTH hammer shank
  15. SD12 DTH hammer shank
  16. QL120 DTH hammer shank
  17. IR112 DTH hammer shank
  18. SD15 DTH hammer shank
  19. IR112S DTH hammer shank
  20. SD18 DTH hammer shank


1. Drilling blasting holes, drainage and ventilating holes, center holes of raising boring, deep blasting holes in traditional drilling and blasting method of raising, pipe holes and other deep holes in all of various strength rocks in open pit and underground mining.

2. Drilling holes in road cutting and other stone constructions (e. g. ports and hydroelectric station constructions, etc.).

3. Drilling water wells, exploratory boreholes and injected holes.

This hammer can work with dry dust collection and also with wet dust removal using mixture of air and water.

The specific DTH hammers as follow:

TS series----for deep hole and super deep hole drilling
TG series----for drying drilling
TH series----for wet drilling


All our Hammers can be easily adapted to accept different types of bit shanks as COP, BR, DHD, SD, XL QL, MACH, Halco and Mission by simply changing a few basic components. Several models are available in Heavy-Duty format to suit particularly arduous and abrasive drilling conditions.



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.

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

By air, By Express or By sea according to your requests.

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; Not satisfied with a refund.



For more information, please contact:



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

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Tel : 13764195009
Fax : 86-021-54380177
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