Home  >  Mining & Metallurgy Machinery  >  Mining Machinery Parts

high air dth hammer, 1.lower energy consumption, 2.higher impact frequency, 3.easy and cheap maintenance, 4.long life, reliable - details see: https://www.machineto.com/faster-drilling-speed-and-most-advanced-air-dth-hammer-10317230

faster drilling speed and most advanced air dth hammer:

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.

ND55A DTH Hammer Technical Data

Length (Less bit)	Weight (Less bit)	External diameter	Bit Shank	Hole Range		Connection Thread
1110mm	69.00kg	Φ125mm	Cop54 DHD350R	Φ135-Φ155		API2 3/8”Reg API3 1/2”Reg
Working Pressure	Impact rate at 1.7Mpa	Recommended rotation speed		Air consumption
				1.0Mpa	1.8Mpa		2.4Mpa
1.0-2.5Mpa	28HZ	20-35r/min		7 m³/min	14 m³/min		19m³/min

Item Description	Weight (kg)	Part Number
1. Top Sub 2. “O” Ring of Top Sub 3. Check Valve 4. Spring 5. Air Distributor 6. Internal Cylinder 7. Piston 8. External Cylinder 9. Guided Sleeve 10. “o” Ring of Stop Ring 11. Stop Ring 12. Drive Chuck 13. Drill Bit	13.70 0.015 0.70 0.10 2.00 2.80 15.00 24.00 2.60 0.01 0.50 6.50 16.00	ND55A01 ND55A02 ND55A03 ND55A04 ND55A05 ND55A06 ND55A07 ND55A08 ND55A09 ND55A10 ND55A11 ND55A12 ND55A13