Specifications

DTH Hammers and Button Bit
1.Lower energy consumption
2.Higher impact frequency
3.Easy and cheap maintenance
4.Long life

4" Inch DTH Hammers and DTH Button Bits/Tungsten Carbide DTH Hammer Drilling SD4:

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.

NSD4 DTH Hammer Technical Data

Length (Without Bit)	Weight (Without Bit)	External diameter	Bit Shank	Hole Range		Connection Thread
1084mm	40.5kg	99mm	SD4	110-135		API2 3/8Reg
Working Pressure	Impact rate at 1.5Mpa	Recommended rotation speed		Air consumption
				1.0Mpa	1.8Mpa		2.4Mpa
1.0-2.5Mpa	27HZ	25-40r/min		6 m³/min	10 m³/min		15m³/min

Item Description	Weight (kg)	Part Number
1. Top Sub 2. O Ring of Top Sub 3. Check Valve 4. Spring 5. Compression Buffer 6. Air Distributor 7. Internal Cylinder 8. Piston 9. External Cylinder 10. o Ring of Stop Ring 11. Stop Ring 12. Drive Chuck 13. Drill Bit	6.50 0.01 0.42 0.04 0.04 2.20 2.50 9.00 15.60 0.02 0.20 4.00 9.60	NSD401 NSD402 NSD403 NSD404 NSD405 NSD406 NSD407 NSD408 NSD409 NSD410 NSD411 NSD412 NSD413

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.