12" Inch Down The Hole DTH Hammer Drill NUMA120

Specifications

12" DTH Hammer Drill
1.Lower energy consumption
2.Higher impact frequency
3.Easy and cheap maintenance
4.Long life, reliable

12" Inch Down The Hole DTH Hammer Drill NUMA120 :

1. 10 years manufacturing experience;

2. Certificate: ISO9001:2008

3. Material: Carbide

It is a kind of valveless high air pressure DTH Hammer with foot valve.

It has the following advantages:

1. Valveless air distribution. More reliable.

2. Simple design of the piston, long life.

3. More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.

4. Fewer internal parts, simple structure, longer life, less failure and easier to maintain because all the parts are heat treated.

5. Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.

12" Inch Down The Hole DTH Hammer Drill NUMA120 Technical Data

Length (Without Bit)	Weight (Without Bit)	External diameter	Bit Shank	Hole Range		Connection Thread
1900mm	485.00kg	275mm	NUMA120	305-445		API6 5/8Reg
Working Pressure	Impact rate at 1.7Mpa	Recommended rotation speed		Air consumption
				1.0Mpa	1.8Mpa		2.4Mpa
1.0-2.5Mpa	16HZ	15-25r/min		30m³/min	56m³/min		78m³/min

Item Description	Weight (kg)	Part Number
1. Top Sub 2. O Ring of Top Sub 3. Breakout Ring 4. Check Valve 5. Spring 6. Compression Buffer 7. Air Distributor 8. Internal Cylinder 9. Piston 10. External Cylinder 11. Guided Sleeve 12. o Ring of Stop Ring 13. Stop Ring 14. Breakout Ring 15. Drive Chuck 16. Drill Bit	70.00 0.04 0.80 3.00 0.10 1.00 20.00 23.00 125.00 170.00 18.00 0.04 4.50 0.80 49.00 120.00	NN12001 NN12002 NN12003 NN12004 NN12005 NN12006 NN12007 NN12008 NN12009 NN12010 NN12011 NN12012 NN12013 NN12014 NN12015 NN12016

Packing: Inner package with cartons,outer package with wooden case

Delivery: in 20 working days after receiving the advance payment

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.