Tubeless DTH Drilling System , Mining Drilling Tools No Footvalve - dthhammerbits

Tubeless DTH Drilling System , Mining Drilling Tools No Footvalve

Brand Name:New Diamond
Certification:ISO9001:2008
Model Number:NM series Hammer
Minimum Order Quantity:Negotiable
Delivery Time:5-8 work days
Payment Terms:L/C, T/T, Western Union
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Verified Supplier
Location: Yueyang Hunan China
Address: PinJiang Industry Park,PingJiang county,YueYang City,Hunan,China.
Supplier`s last login times: within 1 hours
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Product Details

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.according to China's mining conditions, to absorb the advanced technology of domestic and foreign impactor and design and manufacture of the latest products.


2.reasonable selection of materials, advanced manufacturing technology, quality assurance perfect.


3.has higher drilling speed.


4.can provide hardening treatment in order to prolong the service life and reduce the cost of use.


5.single impact power is large, and the power consumption of broken rock is low.


6.piston and bit weight to have the best momentum transfer.


7.the modern theory is adopted in the structural design, which makes the stress wave duration longer, the stress amplitude is lower, and the piston life is long.


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.


Specifications


NM Series High Air Pressure DTH Hammers Without Foot Valve

Technical Data

Length(Without Bit)NM4ANM5ANM6ANM8A
1005mm1110mm1161mm1338mm
Weight(Without Bit)40.00kg68.50kg90.00kg176.00kg
External DiameterØ99mmØ126mm

Ø142mm Ø144mm

Ø146mm Ø148mm

Ø180/Ø185mm
Bit ShankNM4NM5NM6NM8
Hole RangeØ110-Ø135mmØ155-Ø190mmØ155-Ø203mmØ195-Ø254mm
Connection ThreadAPI2 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 Pressure1.2-2.0Mpa1.3-2.3Mpa1.5-2.5Mpa1.5-3.0Mpa
Impact Rate at 17 Bar30HZ28HZ25HZ22HZ
Recommended Rotation Speed25-40r/min20-35r/min20-30r/min15-25r/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 DescriptionWeight(kg)
NM4ANM5ANM6ANM8A
1,Top Sub6.5013.7020.0034.00
2,“O” Ring Of Top Sub0.100.0150.0150.015
3,Breakout Ring---0.30
4,Chenck Valve0.350.700.701.20
5,Spring0.050.100.100.10
6,Air Distributor1.502.003.506.00
7,Internal Cylinder2.102.804.206.50
8,Piston8.5015.0023.0042.50
9,External Cylinder14.8024.0026.0061.00
10,Guided Sleeve1.802.604.805.30
11,“O” Ring Of Stop Ring0.0050.010.010.01
12,Stop Ring0.300.700.801.50
13,Breakout Ring---0.30
14,Drive Chuck3.806.504.2017.30
15,Drill Bit6.6013.5023.0031.00
China Tubeless DTH Drilling System , Mining Drilling Tools No Footvalve supplier

Tubeless DTH Drilling System , Mining Drilling Tools No Footvalve

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