NSD6A DTH Hammer Technical Data
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Length (Less bit)
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Weight (Less bit)
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External diameter
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Bit Shank
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Hole Range
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Connection Thread
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1182mm
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90.00kg
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Φ146mm
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SD6
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Φ155-Φ203
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API3 1/2”Reg
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Working Pressure
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Impact rate at 1.7Mpa
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Recommended rotation speed
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Air consumption
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1.0Mpa
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1.8Mpa
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2.4Mpa
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1.0-2.5Mpa
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25HZ
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20-30r/min
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9m³/min
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18m³/min
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26m³/min
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Item Description
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Weight (kg)
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Part Number
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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
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20.00
0.015
0.70
0.10
3.50
4.20
23.00
28.00
2.50
0.01
0.50
7.50
27.00
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NSD6A01
NSD6A02
NSD6A03
NSD6A04
NSD6A05
NSD6A06
NSD6A07
NSD6A08
NSD6A09
NSD6A10
NSD6A11
NSD6A12
NSD6A13
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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.