| Customization: | Available |
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| Customized: | Customized |
| Certification: | CE, ISO, ISO 9001:2008 |
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| Product | Pressure | Thread | Total Length | Diameter | KG |
| BH140 | 8 Bar | API3 1/2'' | 510 | 140 | 31 |
| BH160 | 8 Bar | API3 1/2'' | 540 | 160 | 44 |
| BH190 | 8 Bar | API4 1/2'' | 580 | 190 | 63 |
| BH240 | 8 Bar | API4 1/2'' | 600 | 240 | 85 |
The Back Hammer is designed to help to free a DTH hammer and drill pipes that have jammed in the drill hole. It can also be used to hammer down or withdraw casings.
The Back Hammer is mounted between the rotating unit and the drill pipes or between drill pipes.
When compressed air let the check valve be opened, the piston in the back hammer starts to strike the support bar and thus the impact and return strokes of the piston in controlled by means of directional ducts in the piston and the control tube.
On the impact stroke, the piston strikes the support bar which transmit the impact energy into the drill string.
The return stroke of the piston is braked by an air cushion and the air cushion chamber and the piston will move back to striking position.
The exhausted air from the back hammer is expelled through the holes at the shoulder of the back hammer.
For hammering down casing, the back hammer is simply mounted upside down, whereupon the impact energy is directed downwards.
Wildcat Back hammer is combined with a shock absorbing unit to protect the equipment's rotation head threads while working.
Qideli are a famous drilling tool manufacturer in China since 1990
We Support :
1.DTH Hammer & button bit, drill rod
2.Top hammer bit & shank adapter & drill rod
3.Taper bit, taper rod
4.New and used air compressor and drilling rig
5.DIAMOND ROPE SAW & OTHER STONE TOOLS
Our products have a great advantage both in price and quality, as well as gotten good reputation from our customers from South Africa, Iran, Malaysia, Burkina Faso, South Korea, Japan, Spain, and the Middle East ETC,more than 50 countries or regions.
Customization is welcome ,we are always be here for your solutions,when you need in.
The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Based on order quantity, normally it takes 25 days for production.
Only 2 or 3 days if we have stock on your request size.
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air.
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
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