High Quality Low Air Pressure DTH Hammer (NR90)

Prod Model:	NR90
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Mining Object:	Metallic and Non-Metallic Ore Excavator

Product Description

Low air pressure hammer drill, hydraulic jack hammer parts
Low Air Pressre DTH Hammer
1. Low energy consumption
2. Long effective acting time
3. Drill hole under water
4. Material: Carbide
Low Air Pressure DTH Hammer:
1.10 years manufacturing experience;
2. Certificate: ISO9001: 2008
3. Material: Carbide

NR Series DTH hammer, a kind of valve-equipped Low-Air-Pressure hammer with a single piston, a plate valve and a central exhaust structure. The compressed air is adopted as the driving force. To prevent dust pollution and get a better performance, some high-pressure water may be added into the air for wet rock drilling.

Advantages:

1. The strong energy of single impact and the low energy consumption in rock crushing;
2. The weight ratio of piston and bit almost reaches 1: 1 to provide long effective acting time, which leads to the improved efficiency in rock crushing and to extended service life of the drilling tool;
3. A good performance in central air exhaust and cuttings discharge, which reduces the repeated crushing of rock;
4. A check valve device is available to drill holes under water.

The NR Series dth hammer, an ideal drilling tool, is widely used in such industries relating to energy, transportation, metallurgy, building etc.


We are mainly manufacturing:

1-12 inch middle-low/high air pressure DTH hammer & bit
Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling
Eccentric overburden drilling Equipment
Hole opener bit
Rock thread bit
Shank adapter, coupling sleeves and all kinds of adapters

About Our factory:

---- New Diamond utilizes advanced equipment for rock drilling machine and pneumatic tools production. And using the best quality raw material, adopting advanced production technology and strict testing procedure, we have developed the most advanced high air pressure DTH hammer, all kinds of drill bit such as down the hole bit, overburden drill bit, thread bit, etc.

----With rich experience in R & D and production, excellent management team, strong innovation creativity and production scale, our company has achieved great success continuously by the excellent quality products, which have been well accepted by end users and the brand has received extensive positive feedback from international markets and products have been exported to the United States, Australia, Brazil, South Africa, South Korea and other countries.

Our advantages:

We have advanced production equipments & talented researchers & technicians & rich experiences in R & D and production.
We use the best quality raw materials.
We adopt advanced production technology & strict testing procedure.
We passed ISO9001 quality management system certification.
We accept OEM manufacturing and produce on your design.

Length    (Without Bit)	Weight  (Without Bit)	External diameter	Bit Shank	Hole Range	Connection Thread
800mm	19.00kg	Φ80mm	CIR90	Φ80-Φ110	T48*10*2
Working Pressure	Impact rate at 0.5Mpa	Recommended rotation speed		Air consumption
				0.5Mpa	0.7Mpa
0.5-0.7Mpa	14HZ	25-40r/min		6.5m³/min	8 m³/min

 

Item Description	Weight (kg)	Part Number
1. Top Sub 2. valve Seal 3. Check Valve 4. Spring 5. Compression Buffer 6. "O"Ring 7. Valve cover 8. Guide Tube 9. Valve 10. Air Distributor 11. Internal Cylinder 12. Piston 13. External Cylinder 14. Guided Sleeve 15. Stop Ring 16. Drive Chuck 17. Drill Bit	2.8 0.01 0.02 0.01 0.01 0.01 0.60 0.01 0.01 0.60 2.00 4.00 5.80 1.20 0.01 1.60 3.50	NR9001 NR9002 NR9003 NR9004 NR9005 NR9006 NR9007 NR9008 NR9009 NR9010 NR9011 NR9012 NR9013 NR9014 NR9015 NR9016 NR9017