QL40A
QL40A Without Foot Valve DTH Hammer
This Series high air pressure DTH hammer work without foot-valve is designed and developed by our own, which is the one of the most leading DTH hammer in the world.
- Avoid the problem happens on foot valve, fracture, expansion and contraction.
- Lower air comsumption and higher impact frequency. 15-30% higher drilling efficiency than the bit with foot valve.
- Simpler structure and less spare parts, makes easier and cheaper maintenance.
- Heat-hardended spare parts, makes longer serving life and less problem.
- Thread connection for top sub and drive chuck, make easier disassembly.
QL40A Structure
| Ref. | Parts | Weigh | Part No. | Ref. | Parts | Weight | Part No. |
|---|---|---|---|---|---|---|---|
| 01 | Top Sub | 8.1 Kg | 01-QL40A-01 | 08 | Piston Case | 16.4 Kg | 01-QL40A-08 |
| 02 | “O”Ring | 0.01 Kg | 01-QL40A-02 | 09 | Guided Sleeve | 2.3 Kg | 01-QL40A-09 |
| 03 | Check Valve | 0.3 Kg | 01-QL40A-03 | 10 | Retainer Ring | 0.27 Kg | 01-QL40A-10 |
| 04 | Spring | 0.04 Kg | 01-QL40A-04 | 11 | “O”Ring | 0.01 Kg | 01-QL40A-11 |
| 05 | Valve Seat | 1.5 Kg | 01-QL40A-05 | 12 | Driver Chuck | 3.3 Kg | 01-QL40A-12 |
| 06 | Inner Cylinder | 2.1 Kg | 01-QL40A-06 | 13 | Drill Bit | 01-QL40A-13 | |
| 07 | Piston | 8.4 Kg | 01-QL40A-07 |
Technical Parameter
| Length(Less bit) | Weight | Outer Diameter | Connection Thread | Bit Shank | Hole Range |
|---|---|---|---|---|---|
| 1057mm | 42.7Kg | φ99mm | API2 3/8″REG | QL40A | φ110-φ135mm |
| Work Pressure | Recommended Rotation Speed | Air Consumption | |||
| 1.0Mpa | 1.8Mpa | ||||
| 1.0-2.2 Mpa | 30-60r/min | 5m³/min | 9m³/min | ||
Contact us
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Welcome to contact us at any time to get the latest product information and quotations.
Email address
info@rockdrillmaster.com
sales@rockdrillmaster.com
Phone numbers
Mobile : +86 188 2419 8826
Our location
Pingjiang Industrial Park, Yueyang,
Hunan Province, China