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NM series DTH hammer

NM series of high pressure wind tunnel DTH hammer without nylon tube
Model:NM4A/NM5A/NM6A/NM8A
China market:yang.riquan@xjgdrill.com
Overseas market:rick.liao@xjgdrill.com
Product details


TDown-hole impactor is a part of a down-hole drilling rig and belongs to the working equipment of a down-hole drilling rig. Down-hole impactor is divided into low-pressure down-hole impactor, stroke pressure down-hole impactor and high-pressure down-hole impactor. The drill equipped with high-pressure non-nylon tube DTH hammer is my company designed valveless high-pressure impactor, is currently the world's most advanced one of the impactor.

 

     It has following advantages:

     1.Out of the trouble of foot valve fracture 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 span,easy and cheap maintenance.
     4.Lower air and oil consumption.The oil consumption is about 10% lower than the one with foot valve.


Impactor Applications:
    Widely used in metallurgy, coal, chemical industry, building materials are not busy mine and water conservancy, hydropower, roads, railways, national defense, construction and other projects into holes, apply to dry, feng shui mixing and gushing blasting wet work, reliable performance , Is today's ideal drilling drilling equipment.

 

The appearance of the picture is different from that of the actual product, and the actual product is the standard.

 无尼龙管冲击器

NM Series High Air Pressure DTH Hammers Without Foot Valve

Item Description

Weight(kg)

NM4A

NM5A

NM6A

NM8A

1Top Sub

6.50

13.70

20.00

34.00

2“O” Ring Of Top Sub

0.10

0.015

0.015

0.015

3Breakout Ring

-

-

-

0.30

4Chenck Valve

0.35

0.70

0.70

1.20

5Spring

0.05

0.10

0.10

0.10

6Air Distributor

1.50

2.00

3.50

6.00

7Internal Cylinder

2.10

2.80

4.20

6.50

8Piston

8.50

15.00

23.00

42.50

9External Cylinder

14.80

24.00

26.00

61.00

10Guided Sleeve

1.80

2.60

4.80

5.30

11“O” Ring Of Stop Ring

0.005

0.01

0.01

0.01

12Stop Ring

0.30

0.70

0.80

1.50

13Breakout Ring

-

-

-

0.30

14Drive Chuck

3.80

6.50

4.20

17.30

15Drill Bit

6.60

13.50

23.00

31.00

Technical Data

Length(Without Bit)

NM4A

NM5A

NM6A

NM8A

1005mm

1110mm

1161mm

1338mm

Weight(Without Bit)

40.00kg

68.50kg

90.00kg

176.00kg

External Diameter

Ø99mm

Ø126mm

Ø142mm Ø144mm

Ø146mm Ø148mm

Ø180/Ø185mm

Bit Shank

NM4

NM5

NM6

NM8

Hole Range

Ø110-Ø135mm

Ø155-Ø190mm

Ø155-Ø203mm

Ø195-Ø254mm

Connection Thread

API2 3”/8REG

API2 3”/8REG

API3 1”/2REG

API2 7”/8REG

API3 1”/2REG

API2 7”/8REG

2 7”/8 IF

API4 1”/2REG

Working Pressure

1.2-2.0Mpa

1.3-2.3Mpa

1.5-2.5Mpa

1.5-3.0Mpa

Impact Rate at 17 Bar

30HZ

28HZ

25HZ

22HZ

Recommended Rotation Speed

25-40r/min

20-35r/min

20-30r/min

15-25r/min

Air Consumption

1.0Mpa:5.0m³/min

1.8Mpa:9.0m³/min

2.4Mpa:14.0m³/min

1.0Mpa:7.0m³/min

1.8Mpa:14.0m³/min

2.4Mpa:19.0m³/min

1.0Mpa:9.0m³/min

1.8Mpa:18.0m³/min

2.4Mpa:26.0m³/min

1.0Mpa:12.0m³/min

1.8Mpa:22.0m³/min

2.4Mpa:28.0m³/min



FAQ


Q: What's your delivery time?
A: Commonly produce need 20-25 days to produce. Within 3or 5 days if in stock.

Q: What methods of payment are accepted?
A: We agree T/T, L/C, West Union.

Q: What about the shipment?
A: Based on order quantity. 
    We can send it to you by Express, by Air, by Sea, and by Train. Or send the goods to your Chinese agent.

Q: How to control the quality?
A: We should be checking & testing everyone button bit before shipment.

Q: Do you agree sample order?
A: Yes, we are welcome your sample order to testing our quality.

Q: Can we select the button bit color?
A: Yes, We color the product according to the color you need.

Q: Can we change to our mark on the button bit?
A: Yes, we can casting your company mark on the button bit. (Except sample order).

Q: Do you have after-sale service and warranty service?
A: Any quality or quantity problem once confirmed, we will reply you within 24 hours and give you a solution.

Q: Can i trust your company?
A: Our company has been certificated by Chinese government, and verified by Alibaba Trade Assurance,100% refund of the Trade Assurance Amount. Alibaba can guarantee all of your payment, Just order from us!

Q: After Services:    

    a. Our sales team will response for your question within 24 hours (Holidays Excluded).   

    b. Technical Support will be available in any time.









Domestic:+86 730 6808685

International:+86 731 89708148

Address:岳阳市平江工业园

yueyang city ping jiang industrial park


Email:China market:yang.riquan@xjgdrill.com
Overseas market:rick.liao@xjgdrill.com
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