QL30 QL40 QL50 QL60 QL80 Down The Hole Hammer For Water Well Mining Quarry Drilling
QL30 QL40 QL50 QL60 QL80 Down The Hole Hammer For Water Well Mining Quarry Drilling
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Basic Infomation
Place of Origin: Germany,China
Brand Name: ROSCHEN
Certification: ISO
Model Number: 3"~12"
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dth drilling tools


down hole hammer

Payment & Shipping Terms
Packaging Details: Wooden box
Supply Ability: 1500 Per month
Name: Down The Hole Hammer
Material: Carbon Steel
Machine Type: Drilling Tool
Processing Type: Forging
Application: Coal Mining
Size: 3 3/4 "(95.3mm)~26"(660.4mm)
Product Description

QL30 QL40 QL50 QL60 QL80 Down The Hole Hammer For Water Well Mining Quarry


Down The Hole Hammer Introduction


1. superior alloy steel: Hardness and wear resistance combined alloy steel, supplied by national top level special steel manufacturer superior

2. Longer Service Life: All parts of the DTH hammer and bits are heat treated,longer life,less failure.

3. High Efficiency: More efficient energy transfer, faster drilling speed,15%-30% faster penetration than conventional DTH hammer.

4. Saving Oil: Lower air consumption and lower oil consumption.

5. Working pressure from 6 Bar to 35 Bar(0.6~ 3.5Mpa)

Down The Hole Hammer Features:


1. Button bit is well known for its high wear resistance on medium-hard to hard abrasive rock formations (between 2.0 Mpa to 2.6 Mpa compressive strength). Featuring spherical tungsten carbide inserts that is known to have strong configuration against carbide fracture.

2. Recommended for eliminating hole deviation.

3. Widely used drifting and tunneling.

4. Bit face design is ideal for medium-hard to hard abrasive rock.



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
Notes: Any special size of DTH bits will be available by requests.
Metzke, Remet thread is available!


QL30 QL40 QL50 QL60 QL80 Down The Hole Hammer For Water Well Mining Quarry Drilling 0




Terms & Conditions of Ordering:

1. Payment Terms:
T/T (Telegraphic Transfer) or Western Union

2. Delivery Term:
Based on order quantity, normally it takes 10 days for production.
Only 2 or 3 days if we have stock on your request size.

3. Transportation:
Sample order: we suggest Courier express or by air
Bulk order: we suggest by air or by sea.

4. 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.


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Get in touch with us
Tel : 13764195009
Fax : 86-021-54380177
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