ND55S 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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1110mm
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66.00kg
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Φ116mm
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Cop54 DHD350R
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Φ127-Φ145
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API2 3/8”Reg 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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28HZ
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20-35r/min
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7 m³/min
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13.5 m³/min
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18m³/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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13.30
0.015
0.70
0.10
1.90
2.70
14.50
23.00
2.50
0.01
0.50
6.20
15.50
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ND55S01
ND55S02
ND55S03
ND55S04
ND55S05
ND55S06
ND55S07
ND55S08
ND55S09
ND55S10
ND55S11
ND55S12
ND55S13
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