Down the hole hammers have powerful drilling capacity, great reliability, low operating costs and long service life. These drilling tools are widely used together with drill bits for drilling and quarrying in mining industries and other construction fields. Advanced production technologies and skillful design, as well as high quality materials result in good performance, simplicity and endurance. Besides, low pressure and high pressure hammers are available.
Specifications
(1) Length: 90mm-605mm
(2) Size: 3"-12"
(3) Package: in wooden case
(4) Productivity: 2000pcs/month
Advantages
Deliver maximum energy to drilling bit, fast drilling speed and low air consumption.
Smooth performance and long service life;
Low problem rate and easy to maintenance;
Easy to depart bit from hammer;
Interchangeable with DTH bit and dill pipe manufactured by Atlas copco and Ingersoll-rand
Parameters
| SIZE | 3" | 4" | 5" | 6" | 8" |
| Length(Less bit) | 930mm | 1030mm | 1170mm | 1248mm | 1487mm |
| Weight(Less bit) | 24.50kg | 39.20kg | 71.5kg | 98.00 | 188.00kg |
| External Diameter | ￠81mm | ￠99mm | ￠125mm | ￠142mm | ￠180mm |
| Bit Shank | IR3.5" Cop34 | Cop44 DHD340 | Cop54 DHD350R | Cop64 DHD360 | Cop84 DHD380 |
| ￠90-￠ 110 | ￠110-￠ 135 | ￠135-￠ 155 | ￠155-￠ 190 | ￠195-￠ 254 | |
| Connection Thread | API23/8" Reg | API23/8" Reg | API23/8" Reg Or API31/2" Reg | API31/2" Reg | API41/2" Reg |
| Working Pressure | 0.5-2.5 Mpa | 0.5-2.5 Mpa | 0.5-2.5 Mpa | 0.5-2.5 Mpa | 0.5-2.5 Mpa |
| Impact rate at 17 Bar | 28HZ | 27HZ | 25HZ | 23HZ | 20HZ |
| Recommended Rotation Speed | 28r/min | 25-40r/min | 20-30r/min | 15-25r/min | 15-20r/min |
| Air 10bar 18bar 24bar | 80L/S | 100L/S | 145L/S | 175L/S | 190L/S |
| 160L/S | 180L/S | 280L/S | 340L/S | 370L/S | |
| 210L/S | 250L/S | 390L/S | 475L/S | 495L/S |
Maxdrill Rock Tools Company is a professional China-based down the hole hammer manufacturer established in 2005. We are approved by ISO9001:2000, and our drilling tools, such as top hammer drilling tools, down the hole drilling tools, taphole drilling and quarry drilling tools, and more, have been exported to Switzerland, Nepal, Slovenia, Brazil and other countries, for their high quality and low price.
If you are interested in our drilling equipment, we welcome you to contact us for consultation at Maxdrill Rock Tools Company. We look forward to working with you.
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