DTH hammer drilling machine(ND25A)

Specifications

Hammer drilling machine
1.Lower energy consumption
2.Higher impact frequency
3.Easy and cheap maintenance
4.Long life

DTH hammer drilling machine(ND25A) :

1. 10 years manufacturing experience;

2. Certificate: ISO9001:2008

3. Material: Carbide

It is a kind of high air pressure DTH Hammer without foot valve, our newest design. It is also one of the most advanced DTH Hammers in the world.

It has the following advantages:

1. Out of the trouble of foot valve fracture and expansion and contraction.

2. Lower energy consumption and higher impact frequency. The drilling speed is 15%-30% higher than the one with foot valve.

3. Simple structure, reliable parts, long life, easy and cheap maintenance.

4. Lower air and oil consumption. The oil consumption is about 10% lower than the one with foot valve.

DTH hammer drilling machine(ND25A) Technical Data

Length (Without Bit)	Weight (Without Bit)	External diameter	Bit Shank	Hole Range	Connection Thread
872mm	16.00kg	71mm	HD25	76-90	T42*10*1.5
Working Pressure	Impact rate at 1.5Mpa	Recommended rotation speed		Air consumption
				1.0Mpa	1.5Mpa
1.0-1.5Mpa	25HZ	22-35r/min		4m³/min	6m³/min

Item Description	Weight (kg)	Part Number
1. Top Sub 2. Check Valve 3. Spring 4. Air Distributor 5. Internal Cylinder 6. Piston 7. External Cylinder 8. Guided Sleeve 9. o Ring 10. Stop Ring 11. Drive Chuck 12. Drill Bit	3.10 0.10 0.05 0.60 0.80 3.80 4.50 0.60 0.005 0.10 1.40 3.20	ND25A01 ND25A02 ND25A03 ND25A04 ND25A 05 ND25A06 ND25A07 ND25A08 ND25A09 ND25A10 ND25A11 ND25A12

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.