Product Details

Product Description

high efficiency 10 inch dth hammers with good price(NN100A)

1. 10 years manufacturing experience;

2. Certificate: ISO9001:2008

3. Material: Carbide

It is a kind of high air pressure DTH Hammer without footvalve, 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.

NN100A DTH Hammer Technical Data

Length (Less bit)	Weight (Less bit)	External diameter	Bit Shank	Hole Range		Connection Thread
1545mm	305.00kg	Φ226mm	NUMA100	Φ254-Φ311		API6 5/8”Reg
Working Pressure	Impact rate at 1.7Mpa	Recommended rotation speed		Air consumption
				1.0Mpa	1.8Mpa		2.4Mpa
1.0-2.5Mpa	20HZ	15-25r/min		22m³/min	40m³/min		65m³/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. Air Distributor

7. Internal Cylinder

8. Piston

9. External Cylinder

10. Guided Sleeve

11. “o” Ring of Stop Ring

12. Stop Ring

13. Breakout Ring

14. Drive Chuck

15. Drill Bit

59.00

0.03

0.50

1.40

0.30

10.50

12.50

77.00

110.00

4.50

0.02

1.90

0.50

25.50

106.00

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NN100A15

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