Quantum Leap 40 Series Down The Hole Hammer Button Bits for Extensive Down Hole Rock drilling
1 pcs
Quantum Leap 40 Series Down The Hole Hammer Button Bits for Extensive Down Hole Rock drilling
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Basic Infomation
Place of Origin: Germany,China
Brand Name: ROSCHEN
Certification: ISO
Model Number: 2"~30"
High Light:

SD4 DTH Hammer Bits


QL40 dth hammers and bits


DHD340A DTH bits

Payment & Shipping Terms
Packaging Details: Wooden box
Supply Ability: 1200 Per month
Model NO: QL40, Quantum Leap Button Bits
Model: DHD340, Cop44, Ql40, SD4, Mission40
Quantity: Small Quantity Is Acceptable
Transport Package: Cartons + Ply-Wooden Cases For Exporting
Sizes: 2 Inch To 30 Inch
Color: As Request
Specification: Grade A
Item: Quantum Leap 40 Button Bits
Series: Quantum Leap 60 Button Bits
Series No.: Quantum Leap 80 Button Bits
Type: Quantum Leap 120 Button Bits
Name: Atlas Copco DTH Button Bits
China: China Ql40 DTH Bits
DTH Bits: China Ql30 DTH Bits
Button Bits: QL DTH Button Bits
Shank: DTH Bits For Ql Shank
DTH Bits: Used Sollroc DTH Bits
China Bit: QL 40 Button Bit
Tools: DTH Hammer Button Bit
QL Hammer: Quantum Leap Down The Hole Hammer
QL Bits: Quantum Leap Down The Hole Hammer Bits
Mission Bit: Mission DTH Bits
Mission Hammer: Mission Down The Hole Hammer
Product Description

Quantum Leap 40 series Down The Hole Button Bits for Extensive Down Hole Rock drilling
QL40 DTH Bits Quantum Leap Down The Hole Hammer

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.


We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, top hammer button bits, coupling, cross bits, drill rods,etc. We have rich experience in this field of DTH hammers and bits for 40 years.

Owing to high quality, professional service and competitive price, we have gotten good reputation from our customers from all over the world, such as USA, Australia, France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.

Product specifications:

For 4" hammer Bit Dia. No. Gauge Front Weight Part No.
DTH bits shank mm inch Air Holes Buttons Buttons (Kg)
DHD340A/COP44 105 4 1/8" 2 6×φ14 5×φ13 9 DHD340-105
110 4 1/4" 2 7×φ13 6×φ13 9.3 DHD340-110
115 4 1/2" 2 7×φ14 6×φ13 10 DHD340-115
120 4 3/4" 2 8×φ14 6×φ14 11 DHD340-120
127 5 2 8×φ14 7×φ14 12 DHD340-127
SD4 105 4 1/8" 2 6×φ14 5×φ13 9 SD4-105
110 4 1/4" 2 7×φ13 6×φ13 9.5 SD4-110
115 4 1/2" 2 7×φ14 6×φ13 9.8 SD4-115
120 4 3/4" 2 8×φ14 6×φ14 11.5 SD4-120
127 5 2 8×φ14 7×φ14 12.3 SD4-127
QL40 105 4 1/8" 2 6×φ14 5×φ13 9 QL40-105
110 4 1/4" 2 7×φ13 6×φ13 9.2 QL40-110
115 4 1/2" 2 7×φ14 6×φ13 9.5 QL40-115
120 4 3/4" 2 8×φ14 6×φ14 10.3 QL40-120
127 5 2 8×φ14 7×φ14 11.5 QL40-127
Mission40 105 4 1/8" 2 6×φ14 5×φ13 6 M40-105
110 4 1/4" 2 7×φ13 6×φ13 6.2 M40-110
115 4 1/2" 2 7×φ14 6×φ13 6.6 M40-115
120 4 3/4" 2 8×φ14 6×φ14 7 M40-120
127 5 2 8×φ14 7×φ14 7.4 M40-127


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
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.




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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Get in touch with us
Contact Person : Bill, George, Michael
Tel : 13764195009
Fax : 86-021-54380177
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