High-Performance QL Series DTH Hammers
DTH Hammer Model:
4'' - QL4 DTH Hammer
5''- QL5 DTH Hammer
6''- QL6 DTH Hammer
8''- QL8 DTH Hammer
QL (QL4 QL5 QL6 QL8) Series Series DTH Hammer Structure and
Specification:
| 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 |
The Characteristics of High Air Pressure DTH Hammers With Foot
Valve:
It is a kind of valveless high air pressure DTH hammer with foot
valve.
Valveless air distribution hammer, more reliable of air
distribution.
Good sealabIlity, no water, and cuttings entering into hammer in
water exist drilling.
QL Series DTH Hammers Features:
1. Valveless air distribution, more reliable.
2. The simple design of the piston. Long life span.
3. More efficient energy transfer, faster drilling speed, low air
consumption, and lower oil consumption.
4. Fewer internal parts, simple structure, long life span, less
failure and easier to maintain because all the parts are heat
treated.
5. Easy to disassemble because the top sub, the drive chuck, and
the external cylinder are connected by multiple steps thread.
QL Series DTH Hammers Advantages:
1. Simple and reasonable design, easy to assemble and dis-assemble,
low problem rate.
2. Low air consumption, smooth drilling, maximum impact power, high
penetration rate.
3. Multiple precise heat-treatment with all hammer parts to provide
long lifespan under roughest working conditions.
Applications
- Blast hole
- Water well
- Environmental
- Exploration
- Construction
Available for all working conditions, high performance in
overburden and water well drilling projects
Rock Drilling Tools Brand MIROC®
The MIROC® Rock Drilling Tools product line by KSQ Technologies
(Beijing) Co.Ltd. is the result of years of advanced engineering,
precision manufacturing, and dedication to the use of high-quality
materials.
MIROC® Rock Drilling Tools are used by many drilling professionals
related to mining, construction, tunneling, and quarrying projects
around the globe.
MIROC® Rock Drilling Tools include:
- Integral Rods
- Plug Hole Rods
- Tapered Drilling Tools
- Extension Drilling Tools
- Drifting and Tunneling Tools
- Reaming Tools
- Shank Rods
- Shank Adapters (Striking Bars)
- Down-the-hole (DTH) Bits
- Down-the-hole (DTH) Hammer
- PDC Bit
- Tricone Bits
Company
KSQ Technologies (Beijing) Co. Ltd.provides exceptional technical know-how in development, production,
and application. The company has adopted advanced manufacturing
processes to ensure high-quality steels and tungsten carbide
inserts for its rock drilling accessories. Its personnel understand
clients’drilling needs and have the service skills to recommend the
right drilling tools for the job.
Its experienced product developers can also create custom tools.
Furthermore, the company’s development team introduces innovative
products each year – tools that are rigorously tested in the field
and proven to perform beyond industry expectations.
Tag: QL Series DTH Hammer, down-the-hole rock drilling tools
