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.
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 Without Foot Valve
|API3 1”/2REG||API4 1”/2REG||API4 1”/2REG|
at 17 Bar
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 Without Foot Valve|
|1, Top Sub||6.50||13.70||20.00||34.00||35.00|
|2, “O” Ring Of Top Sub||0.01||0.015||0.015||0.015||0.01|
|3, Breakout Ring||-||-||-||0.30||0.04|
|4, Chenck Valve||0.35||0.70||0.70||1.20||1.20|
|6, Air Distributor||1.50||2.00||3.50||6.00||7.00|
|7, Internal Cylinder||2.10||2.70||4.20||6.50||7.50|
|9, External Cylinder||15.20||24.00||30.00||59.00||75.00|
|10, Guided Sleeve||1.80||3.00||4.00||6.30||12.00|
|11,“O” Ring Of Stop Ring||0.005||0.01||0.01||0.01||0.01|
|12, Stop Ring||0.20||0.40||0.60||1.40||1.70|
|13, Breakout Ring||-||-||-||0.30||0.40|
|14, Drive Chuck||3.20||4.50||5.50||13.00||15.00|
|15, Drill Bit||9.00||16.00||25.00||35.00||50.00|