NQL95A 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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1340mm
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203.00kg
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Φ203mm
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QL80
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Φ216-Φ254
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API4 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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|||||
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1.0-2.5Mpa
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22HZ
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15-25r/min
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16m³/min
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28m³/min
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39m³/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. 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
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35.00
0.01
0.40
1.20
0.10
7.00
7.50
48.00
75.00
12.00
0.01
1.70
0.40
15.00
50.00
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NQL95A01
NQL95A02
NQL95A03
NQL95A04
NQL95A05
NQL95A06
NQL95A07
NQL95A08
NQL95A09
NQL95A10
NQL95A11
NQL95A12
NQL95A13
NQL95A14
NQL95A15
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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.