8'' Down The Hole DTH Hammer SD8 shank Black Color For Quarry And
Mining
Product Introduce
The DTH hammer is ideal for use in hard, stable rock drilling
applications and overburden drilling applications that require
casing systems. Compared to conventional air-powered DTH hammers or
top hammers, water-powered DTH hammers offer a wide range of
advantages, including low energy consumption, a cleaner
environment, minimal hole deviation, deeper drilling capabilities,
a high power output ratio and minimal impact on the surrounding
ground.
Working Principle
SOLLROC DTH hammer consist of only two moving parts: the piston and
the valve. With so few moving parts, the smart solution delivers
reliable high performance drilling in the most challenging
conditions. Water, at up to 180 bar delivery pressure, is used to
power the impact mechanism of the hammer at a high frequency rate.
When the water leaves the hammer, it loses the pressure and keeps a
low flush velocity. This however is still adequate to bring any
cuttings to the surface and clean the borehole. Additionally, the
hydrostatic column, which is created above the hammer, helps to
keep the hole stable while preventing potential collapse. This also
prevents water from being drawn into the borehole, which increases
hole stability and prevents potential environmental issues.
Feature
1. Easy to disassemble because the top sub,the drive chuck and
external cylinder are connected by multi-step thread
2. high impact power
3. reliable and stable performance
About us
We SOLLROC are a leading manufacturer of rock drilling tools, like
DTH hammers and bits, DTH drill pipes, RC hammers and bits,
tophammer button bits, coupling, cross bits, drill rods located in
Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for
over 20 years.
Owing to high quality, professional serivce and competitive price,
we have gotton good reputation from our customers all over the
world, such as France, Spain, Italy, South Africa, Australia, Iran,
Malaysia, etc.
Specification
Shank | SD8 |
Length (less bit) | 1330mm |
Outer diameter | 185mm |
Top sub thread | API 4 1/2" REG |
Weight (less bit) | 174kg |
Hole range | 195mm-254mm |
Working pressure | 10-30bar |
Impact rate at 1.7 Mpa | 23Hz |
Recommended rotation speed | 15-25 r/min |
Application fields
all kinds of fields, such as mining, quarry, tunnel, bridge,
construction and etc
Product Introduce
DTH hammer is a percussion system driving a piston inside hammer
body with up and donw motion by compressed air and transmitting an
intensive percussion energy to the bit to enable the drilling by
crushing the rock. Drilling method by DTH hammer exerts high
drilling performance especially for drilling hard rock and
contributes for shortening work schedule. Hence, this method is
widely utilized for foundation work, landslide prevention work,
quarrying services, marine civil work, etc.
Our hammer and bits are made of high quality alloy steel with
advanced heat treatment to assure the good drilling performance and
long service life. They are widely used by our customers all over
the world.
All the products are manufactured as per the international
standard.
Delivery Time
Generally need 15-25 days
Transport Way
By air, By Sea or By Express
