38 ° 150mm HDD Pilot Hammer System For Hard Rock Drilling
Product parameters
| Bit Diameter | 5 1/2” |
| Pneumatic DTH hammer | Ø125mm |
| Curved sub | 1° and 1.5° |
| Air consumption | 20-30m3/Min |
| Working pressure | 0.7-2.4Mpa |
| Strength | ≥2800N |
| Hardness (HRA) | ≥92 |
| Wind pressure | 0.5-0.7Mpa |
| Drilling depth | 500 m |
| Drilling angle | 38 (°) |
| Dimensions | 80-220 (mm) |
| Weight | 0.06 (t) |
| Drill pipe threads | NC23 NC26(2 3/8IF) D50 D80 NC31(2 7/8IF) NC38(3 1/2IF) |
Introduction
The HDD pilot hammer is used to carry out impact rotary drilling
with the drilling rig and corresponding drilling tools. The HDD
guide hammer is attached to the bottom end of the drill pipe. The
drill drives the rotation of the drill pipe. Compressed air passes
through the drill pipe into the HDD pilot hammer, generating a
certain frequency of impact force to break the rock. At the same
time, waste gas is used to cool the hammer head. Drain the cuttings
out of the cave. Since the outer diameter of the HDD guide hammer
is smaller than the diameter of the drill bit, as the depth of the
drill bit increases, the guide hammer can be lowered into the hole.
Compared with the pneumatic drill outside the impact hole, the
impact power loss is small, and it can drill deeper holes.
Advantages
1. The hard alloy tooth material adopts high wear-resistant
formula, and the tooth breaking rate is less than 2%.
2. The trouser body is made of high-strength and high-quality alloy
steel. After advanced heat treatment, the breaking rate of pants is
less than 1%.
3. Using advanced CNC machining technology and advanced alloy tooth
assembly technology, the tooth loss rate is less than 1%.
Features
1. The drill bit impacts the rock fast, the rock drilling speed is
fast, and the rock breaking efficiency is high.
2. The drill bit has high wear resistance and can hit more meters.
3. The drilling quality is high and the drilling speed is fast,
without grinding.
4. High-efficiency drill bits can be optimized and customized
according to rock structure.
Field of use
This method is suitable for drilling hard rock formations, the
drilling is not easy to deviate, and it is more advantageous to use
in water-deficient areas. It is used for drilling hard rock and
pebble layers. Compared with conventional rotary drilling and
mechanical percussion drilling, the drilling efficiency can be
increased several to ten times. It is an advanced technology. Its
application areas are constantly expanding. In the past, it was
mainly used for blasting and drilling in mines, but it has been
used in hydropower, railways, highways, water wells, building
foundation piles, and geological prospecting.
Pic Show
FAQ:
1. How to order the products?
A: Please send the inquiry with detail item description or with
Model number.
2. How about the common packing?
A: If there is no special packing demand, we will take it as our
normal packing. First in small carton, and then put in the bigger
carton together to make sure goods completed.
3. Can I expect a quality products?
A: Yes. mature production technology ensuring the quality satisfy
international request.
4. How to check the product are the exact one you want?
A: If possible, please attach one reference picture to avoid any
misunderstanding or any links from our website for a better
understanding.
5. How to control quality?
A: We have our own experienced QC team,there will be strict
inspection and testing for each order before shipping out.
6. Fast delivery time:
A: Usually it takes 25 days for production.only 3 or 5 days if we
have stock of your request size.
7. Competitive price:
A: Our factory can supply you the lowest price due to direct sale
to customers without distributor!
