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Forging Mining Drilling Tools DTH Drilling Rig Parts 1.2-3.0Mpa Working Pressure

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Forging Mining Drilling Tools DTH Drilling Rig Parts 1.2-3.0Mpa Working Pressure

Brand Name : New Diamond
Model Number : NQL series
Certification : ISO9001:2008
Place of Origin : Hunan, China (Mainland)
MOQ : Negotiable
Price : Negotiable
Payment Terms : L/C, T/T, Western Union
Supply Ability : According to order quantity
Delivery Time : 5-8 work days
Packaging Details : Carton packaging and wooden box packing
Type : hammers
Processing Type : Forging
Use : Ore Mining
Color : Required
Machine Type : Drilling Equipment
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When percussion or hammer drilling the percussion mechanism is called a DTH or down the hole hammer. This drilling tool is located directly above the down hole hammer bit. The driller transfers weight to the bit through the drill pipe as well as provides some rotation. Through the use of a compressor, the pressurized air is forced to the down hole hammer. As the drilled hole gets deeper the driller adds more drill pipe to the string. The piston strikes the impact zone of the hammer bit; hammers are always used as part of a casing advancement system and can be used in reverse circulation applications. DTH hammers are common when drilling blast holes and water wells.


It is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge, construction and so on.


NQL Series High Air Pressure DTH Hammers With Foot Valve

Technical Data

Length(Without Bit)NQL4NQL5NQL6NQL8
Weight(Without Bit)41.00kg73.00kg95.00kg182.00kg
External DiameterØ99mmØ126mm

Ø142mm Ø144mm

Ø146mm Ø148mm

Bit ShankQI40QI50QI60QI80
Hole RangeØ110-Ø135mmØ135-Ø155mmØ155-Ø190mmØ195-Ø254mm
Connection ThreadAPI2 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 14 Bar27HZ25HZ23HZ20HZ
Recommended Rotation Speed25-40r/min25-40r/min20-30r/min15-25r/min
Air Consumption













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.

NQL Series High Air Pressure DTH Hammers With Foot Valve
Item DescriptionWeight(kg)
Top Sub6.5015.0020.0041.00
“O” Ring Of Top Sub0.010.0150.020.02
Breakout Ring---0.30
Chenck Valve0.421.001.001.50
Compression Buffer0.
Air Distributor2.203.506.0013.00
Internal Cylinder2.304.205.008.60
External Cylinder16.5024.6031.0060.00
Guided Sleeve-0.901.002.20
“O” Ring Of Stop Ring0.
Stop Ring0.300.400.601.20
Breakout Ring---0.30
Drive Chuck3.004.605.4012.00
Drill Bit9.5015.5024.6035.00

Product Tags:

dth hammer


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