QL50 Down The Hole Mining Water Well Drilling DTH Hammer
KSQ Down The Hole drill bit s are produced from premium quality
alloy steel for increased durability and wear characteristics.
Specific heat treatment standards and special "stress relief"
processes ensure consistent performance.
KSQ DTH hammer bits are designed for maximum performance and hole
cleaning ability and high penetration rate.
At present, DTH drilling tool is widely used in underground mining,
quarries, hydraulic and Hydro-Power Engineering, water well
drilling, Mineral exploration, anchoring hole drilling, geothermal
engineering, Subway excavation, another civil engineering. it has
the advantage of high flatness, smooth hole wall, high rigid of
drill rod and hammer, independent of high axial thrust, no limit of
drilling depth, low cost of devices and easiness to maintain. At
the drilling hole of dia.105mm-dia.254mm, a plenty of the DTH
drilling tools are used.
Description | Weight(kg) |
QL4 | QL5 | QL6 | QL8 |
1. Top sub | 6.50 | 15.00 | 20.00 | 41.00 |
2. O-ring Of Top Sub | 0.01 | 0.02 | 0.02 | 0.02 |
3. Breakout Ring | - | - | - | 0.30 |
4. Check Valve | 0.42 | 1.00 | 1.00 | 1.50 |
5. Spring | 0.04 | 0.10 | 0.10 | 0.10 |
6. Compression Buffer | 0.04 | 0.10 | 0.10 | 0.42 |
7. Air Distributor | 2.20 | 3.50 | 6.00 | 13.00 |
8. Internal cylinder | 2.30 | 4.20 | 5.00 | 8.60 |
9. Piston | 9.00 | 19.00 | 23.50 | 41.00 |
10. External Cylinder | 16.50 | 24.60 | 31.00 | 60.00 |
11. Guided Sleeve | - | 0.90 | 1.00 | 2.20 |
12. O-ring Of Stop Ring | 0.01 | 0.01 | 0.02 | 0.02 |
13. Stop Ring | 0.30 | 0.40 | 0.60 | 1.20 |
14. Breakout Ring | - | - | - | 0.30 |
15. Drive Chuck | 3.00 | 4.60 | 5.40 | 12.00 |
16. Drill Bit | 9.50 | 15.50 | 24.60 | 35.00 |
QL (QL4 QL5 QL6 QL8) Series DTH Hammer Technical Parameter
| Technical Data |
| Model | QL4 | QL5 | QL6 | QL8 |
| Length (Without Bit) | 1097mm | 1156mm | 1212mm | 1465mm |
| Weight (Without Bit) | 41.00kg | 73.00kg | 95.00kg | 182.00kg |
| External Diameter | φ99mm | φ126mm | φ142mm, φ144mm,φ146mm, φ148mm | φ180mm |
| Bit Shank | QL4 | QL5 | QL6 | QL8 |
| Hole Range | φ110 - φ135mm | φ135- φ155mm | φ155 - φ190mm | φ195 - φ254mm |
| Connection Thread | API 2 3/8 '' Reg | API 3 1/2 '' Reg, API 2 7/8 '' Reg | API 3 1/2 '' Reg, API 2 7/8 '' Reg, API 2 7/8 '' IF | API 4 1/2 '' Reg |
| Working Pressure | 1.2 - 2.0 Mpa | 1.3 - 2.3 Mpa | 1.5 - 2.5 Mpa | 1.5 - 3.0 Mpa |
| Impact Rate at 17 Bar | 27HZ | 25HZ | 23HZ | 20HZ |
| Recommended Rotation Speed | 25 - 40 r/min | 25 - 40 r/min | 20 - 30 r/min | 15 - 25 r/min |
| Air Consumption | 1.0Mpa: 6 m³/ min | 1.0Mpa: 9 m³/ min | 1.0Mpa: 10 m³/ min | 1.0Mpa: 15 m³/ min |
| 1.8Mpa: 10 m³/ min | 1.8Mpa: 15 m³/ min | 1.8Mpa: 20 m³/ min | 1.8Mpa: 26 m³/ min |
| 2.4Mpa: 15 m³/ min | 2.4Mpa: 23 m³/ min | 2.4Mpa: 28.5 m³/ min | 2.4Mpa: 34 m³/ min |
