NRC45 DTH Hammer Technical Data
|
Length (Less bit)
|
Weight (Less bit)
|
External diameter
|
Bit Shank
|
Hole Range
|
Connection Thread
|
||
|
1020mm
|
94.0kg
|
Φ99mm
|
HRC45
|
Φ114-Φ127
|
Upon the thread of the drill tube
|
||
|
Working Pressure
|
Impact rate at 1.7Mpa
|
Recommended rotation speed
|
Air consumption
|
||||
|
1.0Mpa
|
1.8Mpa
|
2.4Mpa
|
|||||
|
1.0-3.0Mpa
|
30HZ
|
25-40r/min
|
8m³/min
|
12m³/min
|
16m³/min
|
||
|
Item Description
|
Weight (kg)
|
Part Number
|
|
1. Internal Circlip
2. Air Screen
3. Top Sub
4. “O” Ring
5. Sample Tube
6. Check Valve
7. Spring
8. “O” Ring
9. Air Distributor
10. “O” Ring
11. Internal Cylinder
12. Piston
13. External Cylinder
14. Guided Sleeve
15. Drive Chuck
16. Bit Retaining Pin
16. Drill Bit
|
0.03
0.35
6.50
0.01
5.10
0.25
0.04
0.01
0.85
0.02
2.20
8.50
14.5
1.20
3.20
0.01
10.50
|
NRC4501
NRC4502
NRC4503
NRC4504
NRC4505
NRC4506
NRC4507
NRC4508
NRC4509
NRC4510
NRC4511
NRC4512
NRC4513
NRC4514
NRC4515
NRC4516
NRC4517
|
It has the following characteristics:
1. Based on previous experience of ordinary hammers, combined with the features of reverse circulation hammer, optimized internal structure and ideal energy transfer, thus ensuring the series of hammers drilling with fast, smooth and continuous sampling.
2. The internal structure is very simple with components of high rigidity, thus ensuring long life and easy maintenance of the hammer.
3. The collection tube adopts an integrative design and can be replaced without disassembling the hammer. With carburizing treatment, it has good abrasive resistance.
4. Equipped with bits designed with patent. Simply by replacing the drill bit, the same hammer can drill holes of different sizes ensuring theat the ample is not contaminated.
5. In difficult conditions such as loose soil, hard rock and plenty of water exists, sampling can be done well.