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|
|3"||DHD3.5||ROS 32||API 2 3/8" Reg||￠90-￠110mm||1.0-1.5Mpa||1.0Mpa||4.5m3/min|
|4"||DHD340||ROS 34||API 2 3/8" Reg||￠110-￠135mm||1.0-2.5Mpa||1.0Mpa||6m3/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|
|6"||DHD360||ROS 62 ROS 64||API 3 1/2" Reg||￠155-￠190mm||1.0-2.5Mpa||1.0Mpa||10m3/min|
|8"||DHD380||ROS 82 ROS 84||API 4 1/2" Reg||￠195-￠254mm||1.0-2.5Mpa||1.0Mpa||15m3/min|
|10"||SD10||ROS 100||API 6 5/8" Reg||￠254-￠311mm||1.0-2.5Mpa||1.0Mpa||22m3/min|
|12"||DHD1120||ROS 120||API 6 5/8" Reg||￠305-￠445mm||1.0-2.5Mpa||1.0Mpa||30m3/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|
|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|
|4"||105mm-152mm||4 1/8"-6"||COP44/DHD340/MACH44||ROS 42|
|5"||133mm-165mm||5 1/4"-6 1/2"||COP54/DHD350R/MACH50||ROS 52|
|6"||152mm-254mm||4 1/8"-10"||COP64/DHD360/SD6||ROS 62|
|M60/QL60/Bulroc BR6||ROS 64|
|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. 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:
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.
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:
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: firstname.lastname@example.org ; email@example.com
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