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Hunan New Diamond Construction Machinery Co., Ltd.
Hunan New Diamond Construction Machinery Co., Ltd.

Hunan New Diamond Construction Machinery Co., Ltd.

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No Foot Valve Forging Borewell Drilling Hammers For Mining Tools , ISO Approval

No Foot Valve Forging Borewell Drilling Hammers For Mining Tools , ISO Approval

  • No Foot Valve Forging Borewell Drilling Hammers For Mining Tools , ISO Approval
No Foot Valve Forging Borewell Drilling Hammers For Mining Tools , ISO Approval
Product Details:
Place of Origin: Hunan, China (Mainland)
Brand Name: New Diamond
Certification: ISO9001:2008
Model Number: NM series Hammer
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Carton packaging and wooden box packing
Delivery Time: 5-8 work days
Payment Terms: L/C, T/T, Western Union
Supply Ability: According to order quantity
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Detailed Product Description
Type: Hammer Processing Type: Forging
Use: Ore Mining Color: Required
Application: MARBLE QUARRY OR WELL DRILLING Machine Type: Drilling Equipment
High Light:

borewell hammer

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dth drilling tools

Specifications


NM Series High Air Pressure DTH Hammers Without Foot Valve

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


Feature Advantage

1. Price commitment: in order to ensure the high reliability of products, raw material selection are using grapefruit brand products; under the same competitive conditions, and not to reduce product technical performance on the basis of sincerity at a favorable price to customers.


2. Quality commitment: product manufacturing and testing have quality records and inspection data; the performance of the product can withstand customer inspection.

 

3. Customer service: in order to create new diamond brand, enhance the visibility of enterprises, establish corporate image, we serve customers with the principle of "preferential prices, good service, reliable product quality" principle.


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

 

 

 

NM Series High Air Pressure DTH Hammers Without Foot Valve
Item Description Weight(kg)
NM4A NM5A NM6A NM8A
Top Sub 6.50 13.70 20.00 34.00
“O” Ring Of Top Sub 0.10 0.015 0.015 0.015
Breakout Ring - - - 0.30
Chenck Valve 0.35 0.70 0.70 1.20
Spring 0.05 0.10 0.10 0.10
Air Distributor 1.50 2.00 3.50 6.00
Internal Cylinder 2.10 2.80 4.20 6.50
Piston 8.50 15.00 23.00 42.50
External Cylinder 14.80 24.00 26.00 61.00
Guided Sleeve 1.80 2.60 4.80 5.30
“O” Ring Of Stop Ring 0.005 0.01 0.01 0.01
Stop Ring 0.30 0.70 0.80 1.50
Breakout Ring - - - 0.30
Drive Chuck 3.80 6.50 4.20 17.30
Drill Bit 6.60 13.50 23.00 31.00
 

Description


Down the hole rock tools (drilling tools) are rock drilling equipment which takes compressed air as power source to partially transfer impact power into drilling holes. An air distributing device in a top hammer controls a piston to move back and forth. An impact device arranged in the front of the top hammer transfers the impact powderto a down-the-hole bit to crush rocks.

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 that the sample is not contaminated.

 

5. In difficult conditions such as loose soil, hard rock and plenty of water exists, sampling can be done well.

 

Applications


Widely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole, mountain reinforcement, anchorage and other engineering holes, geothermal exploration hole, Well bore and other fields.

Contact Details
Hunan New Diamond Construction Machinery Co., Ltd.

Contact Person: Rick.liao

Tel: +8618692219720

Send your inquiry directly to us
Hunan New Diamond Construction Machinery Co., Ltd.
PinJiang Industry Park,PingJiang county,YueYang City,Hunan,China.
Tel:86-731-89708248
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