ND25A 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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872mm
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16.00kg
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Φ71mm
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HD25
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Φ76-Φ90
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T42*10*1.5
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Working Pressure
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Impact rate at 1.5Mpa
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Recommended rotation speed
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Air consumption
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||
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1.0Mpa
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1.5Mpa
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||||
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1.0-1.5Mpa
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25HZ
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22-35r/min
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4m³/min
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6m³/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. Check Valve
3. Spring
4. Air Distributor
5. Internal Cylinder
6. Piston
7. External Cylinder
8. Guided Sleeve
9. “o” Ring
10. Stop Ring
11. Drive Chuck
12. Drill Bit
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3.10
0.10
0.05
0.60
0.80
3.80
4.50
0.60
0.005
0.10
1.40
3.20
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ND25A01
ND25A02
ND25A03
ND25A04
ND25A 05
ND25A06
ND25A07
ND25A08
ND25A09
ND25A10
ND25A11
ND25A12
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