12"DHD1120 High Pressure DTH down hole
drill bit φ305-φ445 and hammer
for water well drilling/mining
In DTH hammers, the rock drilling bit is a continuation of the
shank, which the rock drill piston strikes directly. Since the
piston is in direct contact with the drill bit, little energy is
lost. This gives DTH hammers a nearly constant penetration rate
regardless of hole length.
1. Deliver maximum energy to drilling bit, fast drilling speed and
low air consumption due to the special inner structure of HD series
DTH hammer designed according to newest rock drilling theory.
2. Smooth performance and long service life of DTH hammer due to
high quality alloy steel materials and advanced processing
technology adapted.
3. Low problem rate and easy to maintenance due to simple, reliable
and easy assemble and disassemble inner structure of hammer.
4. Easy to depart bit from hammer due to multi-head thread
connecting chuck and cylinder of hammer.
5. Interchangeable with DTH bit and drill pipe
Basic Information
| Items | Replacement Parts |
| 1 | Top sub |
| 2 | O-ring of top sub |
| 3 | Breakout Ring |
| 4 | Check Valve |
| 5 | Spring |
| 6 | Compression Buffer |
| 7 | Air Distributor |
| 8 | Internal cylinder |
| 9 | Piston |
| 10 | External cylinder |
| 11 | Guide sleeve |
| 12 | O-ring of stop ring |
| 13 | Stop ring |
| 14 | Breakout ring |
| 15 | Drive chunk |
| 16 | Drill bit |
DHD1120 Hammer Specification:
| Drilling Diameter(mm) | Hammer Length Without Bit(mm) | External Diameter(mm) | Weight Without Bit(kg) |
| φ305-φ445 | 1900 | 275mm | 480 |
| Working Pressure(Mpa) | Air Consumption(m³/min) |
| 2.0-3.5 Mpa | 1.0Mpa: 30 m³/min | 1.8Mpa: 56 m³/min | 2.4Mpa: 78 m³/min |
| Impact rate at 17 bar | Recommended Rotation Speed | Connection Rod Thread | Bit Shank |
| 16HZ | 15-25 r/min. | API 6 5/8'' Reg | DHD1120 |
KSQ DTH hammer have powerful drilling capacity, great reliabiltiy and low
operating cost. Advanced prodction techologies and skillful design, as well as
high quality materials result in good performance, long service
life, simplicity and endurance. .
Photos
Application
Company Information
KSQ Technologies (Beijing) Co. Ltd. has significant experience and
know-how in the supply of materials, components, finished goods,
specially designed/engineered equipment, and services from China.
The company caters to medium to large scale clients who are doing
projects and capital expansion, as well as to firms who require
support with consumable products, maintenance, and repair
operations.
MIROC® Rock Drilling Tools include:
