High Air Pressure DTH Drilling Hammers for DHD, SD, Ql, Mission, Numa, Cop DTH Hammer, DTH Button Bits Used for DTH Drilling

• Customized: Customized
• Standard: JIS, AISI, API
• Length: Jobber-length
• Type: Core Drill Bit
• Material: Diamond
• Usage: Wood Drilling, Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling
• Model NO.: DHD, SD, QL, Mission, COP, Numa, BR
• Name: Down-The-Hole Drill Bit
• 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
• Use: Down The Hole Drilling Method
• China: China Down Hole Hammer and Bits
• Transport Package: Wooden Box
• Specification: 50cm
• Trademark: ROSCHEN
• Origin: China
• HS Code: 84314320
• Production Capacity: 2000

Product Description

DTH Hammer Function Description: 

How does a DTH hammer work? Compressed gas enters the DTH hammer through the drill pipe and then discharges from the DTH hammer button bits. The exhaust gas is used to discharge the ballast. The rotary motion of down the hole hammer is provided by the rotary hammer bit head, and the thrust of the shaft is provided by the propeller, which is transmitted to the DTH hammer through the drill rod. Brazing jacket is mainly used to transfer thrust and rotary motion to drill bit. The clasp controls the axial movement of the drill bit, while the check valve is used to stop impurities such as ballast from entering the DTH hammer when the pressure supply is stopped. During drilling, the DTH button bit is pushed by the dth hammer and pressed on the brazing sleeve. At this time, the piston directly impacts the bit to drill. When the bit is lifted off the bottom of the hole, it begins to blow strongly. That is the DTH hammer working principle

we are DTH hammer manufacturers ,we make all kinds of dth hammer sizes.  And design all kinds of DTH hammer for sale, customer always inquire many DTH hammer factory, compare DTH hammer price. Then choose the best suitable products. Our products can give you best quality and function guarantee and best service.

 

DTH Hammer design advantages: 

1. Using the latest contemporary rock drilling theory to design the internal structure size of down the hole hammer, the DTH Hammer can obtain the most ideal energy transfer, the single impact work is large, and the drilling speed is faster.

2. Special taper diameter-changing design. If gravel and soil jam occurs during drilling, taper diameter-changing during drilling can reduce lift resistance and greatly reduce the occurrence of faults that can not be brought out by DTH Hammer.

3. In order to prevent dust pollution in drilling operation, special computer programmed heat treatment technology is adopted for the main parts of the product, which is beneficial to adding a small amount of high-pressure water into compressed air and conducting wet drilling to protect the health of operators.

4. Users of this design can connect directly with drill pipe without changing diameter joint, so as to reduce the production cost of users.

5. Choose the best raw materials and the most advanced processing technology, the performance is more stable and the service life is longer.

6. It has the simplest, reliable and easy to assemble and disassemble internal structure with fewer failures and convenient maintenance.

 

Product structures: 

The dth hammer piston, inner cylinder, valve seat, check valve and bit accessories are installed in the slender outer cylinder. The upper joint with wrench opening and connection thread is installed on the outer cylinder, and the brazing sleeve with thread connection is installed on the lower end.

So, our company also sale the dth hammer parts, for example, dth hammer breakout bench,  dth hammer shock absorber,  dth hammer bench,  dth hammer bit sharpener,  dth hammer control tube,  dth hammer chuck,  dth hammer foot valve.

Product specifications:  

For 8" hammer DTH bits shank	Bit Dia.		No. Air Holes	Gauge Buttons	Front Buttons	Weight (Kg)	Part No.
	mm	inch
DHD380/COP84	195	7 11/16	3	9×φ18	9×φ16	32	DHD380-195
	203	8"	2	9×φ18	10×φ18	41	DHD380-203
	216	8 1/2"	2	10×φ18	12×φ16	49	DHD380-216
	254	10"	3	11×φ18	17×φ16	71	DHD380-254
	305	12"	4	12×φ18	29×φ16	95	DHD380-305
SD8	195	7 11/16	3	9×φ18	9×φ16	32	SD8-195
	203	8"	3	9×φ18	9×φ18	41	SD8-203
	216	8 1/2"	2	10×φ18	12×φ16	49	SD8-216
	254	10"	3	11×φ18	17×φ16	71	SD8-254
	305	12"	4	12×φ18	29×φ16	95	SD8-305
QL80	195	7 11/16	3	9×φ18	9×φ16	32	QL80-195
	203	8"	3	9×φ18	9×φ18	41	QL80-203
	216	8 1/2"	2	10×φ18	12×φ16	49	QL80-216
	254	10"	3	11×φ18	17×φ16	71	QL80-254
	305	12"	4	12×φ18	29×φ16	95	QL80-305
Mission80	195	7 11/16	3	9×φ18	9×φ16	35	M80-195
	203	8"	3	9×φ18	9×φ18	40	M80-203
	216	8 1/2"	2	10×φ18	12×φ16	54	M80-216
	254	10"	3	11×φ18	17×φ16	57	M80-254
	305	12"	4	12×φ18	29×φ16	77	M80-305

ROSCHEN hammer bit technical data:
 

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
			NUMA100
12"	305mm-508mm	12"-20"	DHD1120/SD12	ROS 120
			NUMA120/NUMA125
Notes:
Metzke, Remet thread is available!
Any special size of DTH bits will be available by requests.

Shank can be available:

1), Dia. 64mm-70mm shank Bulroc BR1
2), Dia. 70mm-95mm shank Halco MACH20, Bulroc BR2
3), Dia. 90mm-102mm shank COP32, COP34, Halco MACH303, M30, DHD3.5, Bulroc BR3
4), Dia. 105mm-152mm shank COP44, DHD340, Halco MACH44, SD4, M40, QL40, Bulroc BR4
5), Dia. 135mm-165mm shank COP54, DHD350R, COP54, Halco MACH50, SD5, M50, QL50, Bulroc BR5
6), Dia. 152mm-254mm shank COP64, DHD360, SD6, M60, QL60, Bulroc BR6
7), Dia. 203mm-330mm shank COP84, DHD380, SD8, QL80
8), Dia. 254mm-380mm shank SD10, Numa100
9), Dia. 305mm-508mm shank DHD1120, SD12, N120, N125
10), Dia. 405mm-864mm shank SD15, SD18
11), VKP80, VKP95, CIR90, CIR100, CIR110, CIR150, CIR200...

We can also provide related products DTH hammers, ODEX system, symmetrix systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc


Product photos



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 damagement 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.

FAQ 

Q: Are you a manufacturer or trading company ?
A: We are a specialized manufacturer.

Q: How about the delivery terms ?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.

Q: How about discount ?
A: Price is based on products and order quantity.

Q: Do you accept sample order?
A: Yes sure, please contact us for details.

Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.


For more information please contact:

roschen.en.made-in-china.com