QL680
QL680 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.
QL680 Structure
| Ref. | Parts | Weight | Part No. | Ref. | Parts | Weight | Part No. |
|---|---|---|---|---|---|---|---|
| 01 | Top Sub | 21.5 Kg | 01-QL680-01 | 09 | Piston Case | 34.3 Kg | 01-QL680-09 |
| 02 | “0”Ring | 0.01 Kg | 01-QL680-02 | 10 | Guided Sleeve | 5.4 Kg | 01-QL680-10 |
| 03 | Disc Spring | 0.34 Kg | 01-QL680-03 | 11 | Check Ring | 0.02 Kg | 01-QL680-11 |
| 04 | Check Valve | 0.56 Kg | 01-0L680-04 | 12 | Retainer Ring | 0.92 Kg | 01-0L680-12 |
| 05 | Spring | 0.05 Kg | 01-QL680-05 | 13 | “O”Ring | 0.01 Kg | 01-QL680-13 |
| 06 | Valve Seat | 4.3 Kg | 01-QL680-06 | 14 | Drive Chuck | 7.5 Kg | 01-0L680-14 |
| 07 | Inner Cylinder | 4.2 Kg | 01-QL680-07 | 15 | Drill Bit | 01-QL680-15 | |
| 08 | Piston | 23 Kg | 01-QL680-08 |
Technical Parameter
| Length(Less bit) | Weight | Outer Diameter | Connection Thread | Bit Shank | Hole Range |
|---|---|---|---|---|---|
| 1155mm | 102Kg | φ148mm | API3 1/2″REG | QL60A | φ158-φ203mm |
| Work Pressure | Recommended Rotation Speed | Air Consumption | |||
| 1.8Mpa | 2.4Mpa | ||||
| 1.2-2.7 Mpa | 30～60r/min | 16m³/min | 23m³/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