NR110 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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839mm
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32.00kg
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Φ98mm
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CIR110
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Φ110-Φ135
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API 2 3/8” Reg Box
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Working Pressure
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Impact rate at 0.5Mpa
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Recommended rotation speed
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Air consumption
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||
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0.5Mpa
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0.7Mpa
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||||
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0.5-0.7Mpa
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14HZ
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25-40r/min
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9.5m³/min
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11m³/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. valve Seal
3. Check Valve
4. Spring
5. Compression Buffer
6. “O”Ring
7. Valve cover
8. Guide Tube
9. Valve
10. Air Distributor
11. Internal Cylinder
12. Piston
13. External Cylinder
14. Guided Sleeve
15. Stop Ring
16. Drive Chuck
17. Drill Bit
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5.00
0.01
0.02
0.005
0.01
0.80
0.60
0.01
0.015
1.00
2.80
7.00
8.80
1.40
0.01
3.80
6.40
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NR11001
NR11002
NR11003
NR11004
NR11005
NR11006
NR11007
NR11008
NR11009
NR11010
NR11011
NR11012
NR11013
NR11014
NR11015
NR11016
NR11017
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The Characteristics Of Low Air Pressure DTH Hammers
NR Series DTH Hammer, a kind of valve-equipped Low-Air-Pressure hammer with a single piston, a plate valve and a central exhaust structure. The compressed air is adopted as the driving force. To prevent dust pollution and get a better performance, some high-pressure water may be added into the air for wet rock drilling.
It is mainly featured in:
1. The strong energy of single impact and the low energy consumption in rock crushing;
2. The weight ratio of Piston and Bit almost reaches 1:1 to provide long effective acting time, which leads to improved efficiency in rock crushing and the extended service life of the drilling tool;
3. A good performance in central air exhaust and cutting discharge, which reduces the repeated crushing of rock;
4. A check valve device is available to drill holes under water.
The HR Series DTH Hammer, an ideal drilling tool, is widely used in such industries relating to energy, transportation, metallurgy, building etc.