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
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
5. In difficult conditions such as loose soil, hard rock and plenty
of water exists, sampling can be done well.
All our products, which passed ISO9001 quality management system,
are widely used in open pit mining,tunneling, quarrying, transportation construction,engineering,
earth-rock excavation, water wells, pile foundation, and civil engineering project etc. We are one of the
companies which have the most complete product lines, the most abundant species and the most widely used
products in drilling industry.
|Connection Thread||API3 1”/2REG||API4 1”/2REG|
|API7 5”/8REG||API8 5”/8REG||API8 5”/8REG|
|Impact Rate at 17 Bar||25HZ||20HZ||20HZ||20HZ||20HZ||20HZ||20HZ|
|Recommended Rotation Speed||20-30r/min||15-25r/min||15-25r/min||15-25r/min||15-25r/min||15-25r/min||15-25r/min|
1. Using the latest rock drilling theory,optimizing the inside
structure and the size of the air distrbution,to make the DTH
hammer obtain the optimal energy transfer and make it achieve
faster drilling speed and lower air consumption.
2. For such projects as the drill bit break,retrieving very
difficult,we specially designed a safe and reliable anti-shedding
device for the bit.
3. The check valve can be replaced to replaced to the one with
bigger air controlling hole to provide more efficient cutting
4. The top sub and the drive chuck have special thread,which can
achieve an easier disassemble.
1. Fast drilling speed and low air consumption due to the special
2. Smooth performance and long service due to high quality alloy
steel materials and advanced processing.
1. Low problem rate and easy to maintenance due to simple, reliable
and easy assemble and disassemble inner.
Structure of hammer
1. Easy to depart bit from hammer due to multi—head thread
connecting chuck and cylinder of hammer.
2. Interchangeable with DTH bit and drill pipe.
The appearance of the picture is different from that of the actual
product, and the actual product is the standard.
|1, Top Sub||20.00||34.00||59.00||230.00||320.00||800.00||960.00|
|2, “O” Ring Of Top Sub||0.02||0.015||0.03||0.04||0.10||0.02||0.03|
|3, Breakout Ring||-||0.60||0.80||1.00||2.00||3.55||5.00|
|4, Chenck Valve||0.70||1.20||1.40||2.00||5.00||13.50||18.00|
|6, Air Distributor||3.50||6.00||10.50||16.00||35.00||58.90||79.50|
|7, Internal Cylinder||4.20||6.50||12.50||25.00||30.00||101.60||137.00|
|9, External Cylinder||31.50||60.00||110.00||170.00||316.00||952.00||1285.00|
|10, Guided Sleeve||6.50||6.30||4.50||23.00||38.00||98.00||132.00|
|11, “O” Ring Of Stop Ring||0.01||0.01||0.02||0.03||0.05||0.02||0.02|
|12, Stop Ring||0.60||1.40||1.90||4.00||6.00||14.25||19.50|
|13, Breakout Ring||0.20||0.60||0.80||1.00||2.00||3.55||5.00|
|14, Drive Chuck||5.00||12.00||21.00||34.00||64.00||162.00||219.00|
|16, Drill Bit||27.00||37.00||68.00||185.00||240.00||528.00||1328.00|