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ROCK TOOLS
Surface Drilling Solution
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
Bench drilling tools are mainly used in open-pit mining,
quarrying, hydropower, road and railway projects etc. We can
recommend suitable solutions to meet various demands of our
customers and help these customers to save on drilling costs
and earn more profits.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
1、 Weathered rock, Soft rock & fissured rock
This rock type is widely found in open pit mining, infrastructure projects &
ground treatment etc. For drilling the mixture of soil, soft and hard rock, we
need to choose a drill string with universal and good flushing design
characteristics. Customers are encouraged to use a drilling string made by
the same manufacturer such as button bits, extension rods, couplings and
shank adaptor as this can reduce the breakage of extension rods caused
by poor thread connection between opposing products.
For Weathered rock, Soft rock & Fissured rock, we recommend
the following designs:
B89T45-D854A, Drop Center
During drilling in fissured and heterogeneous
rock, cracks and different rock can cause hole
deviation. Drop Centre design has better
flushing characteristics than that of Flat Face
design, and the cuttings are distributed evenly
around the steel body, so minimizing steel wash.
Drop center design contributes to good hole
straightness. The gauge buttons protrude in front
of the front buttons, and cut an edge that that
gives good guidance to the bit.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
B102T51-RD864A
For fissured and heterogeneous rock, besides
V-Shape and Drop Center designs, we strongly
recommend customers choose Retrac skirt bits
which allows the button bit to “drill” in reverse if
the bit becomes bogged. This is an important
feature when drilling in loose, broken or
fissured rock where it can be difficult to retract
the drill string due to hole collapse. In addition,
Retrac bits have deep grooves milled along the
bit body for efficient cutting removal. The good
guidance of this bit gives straighter holes.
G102T51-V864S, V-Shape
We optimized carbide configuration of button bits
by 3D CAD design software and simulated
surface drilling condition. The rock cuttings at the
bottom of hole can be blown out of the hole
quickly as we improve the design of flushing
holes and grooves of the button bit based on
strict calculation of air velocity and pressure,
which reduce wear of carbides from rock
cuttings and increase overall drilling speed.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
2、Medium hard rock and homogeneous rock
For Medium hard rock and
Homogeneous rock, we recommend
the following designs: Such rock
formation is frequently seen in
surface mining, infrastructure
construction and quarrying. In this
type of rock drilling, we see
homogeneous rock stratum with
medium to hard hardness in the
same site. This is an ideal rock
formation for rock hole forming.
Therefore, drilling efficiency and
lifespan should be the main concern
for selection of drilling tools to
ensure more profits are achieved.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
JSI recommend several drill bit designs for medium hard
rock and hard rock:
B102T45-862A
B76T38842A2
B89T45G964A
B115T45-D874A
The design features of these models:
JSI acquired accurate testing data of various types of open-pit
drilling machines through a lot of field research. Accurate air flow
and pressure calculations and the rational design of the drill bit
flushing area reduces drill bit wear from dust at the bottom of the
hole and improve overall drilling speed and lifespan. 3D computer
aided designs optimize the drill bit design and button configuration.
Thus efficiency of tungsten carbide, footage speed and lifespan of
drill bits are greatly improved. Various drill bit designs suitable for
medium hard rock and hard rock come from first hand data
collected from extensive field trials.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
3、Extremely Hard rock & Abrasive rock
In open pit iron ore mining,
hydropower construction
aggregate field, railway
cornerstone stockyard and
some special rock drilling
works, we are met with
extremely hard rock and
abrasive rock. Drilling in
this kind of rock formation
consumes lots of tools. Its
main feature is large drill bit
consumption and short
lifespan.
The major failure is tungsten carbide wear and breakage and drill rod
thread wear. Normally we have individual designs for long-term mining
users. We will finalize the best designs according to in depth field tests.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
We recommend following designs for extremely Hard
rock and Abrasive rock:
B89T45-852H
B102T51-G983H
B115T51-872M
B102T51-D864M
The design features of these models:
In hard rock and extremely hard rock drilling, steel matrix impact is
relatively small while impact and wear on tungsten carbide buttons is
normally aggressive. “H”- type drill bit design has a specially designed
number of tungsten carbide buttons and tungsten carbide strength;
“M” -type design is more about tungsten carbide wear caused by quartz.
During initial design the drilling process is simulated by computers.
Flushing efficiency and lifespan of tungsten carbide are optimized by
accurate calculation to improve footage speed and lifespan. The
flushing efficiency of the above-mentioned two types of design is not as
good as that for soft rock and medium hard rock. Any change of
designs away from the above will lead to slow drilling speed, high
temperature of the drill bit and even possible breakage. If the rock
formation is not clear to the user, “A”-type products are recommended
to be used for initial drilling purposes.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
Open-pit Mining
Following latest technology trends, satisfying the demand for
higher efficiency, our large diameter button bit with new
thread achieved outstanding success in many markets.
Over time many clients now choose hydraulic drill rigs for open-pit mining.
Hydraulic drill rigs have the features such as higher efficiency and energysaving, especially for 115mm to 140mm blast hole diameters. These new
hydraulic drill rigs are more powerful. “GT60” rods and bits for the larger
hydraulic drill rigs have been designed to provide a more suitable drill
string when drilling these larger diameter boreholes.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
As request of our clients, we developed GT60 button
bits, size from 115mm to 152mm, which have been
widely used around the world:
V874S
V884S
D874A
802A
G983H
003H
G60
Retrac
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
993A
882M
ROCK TOOLS
JSI have two production lines of button bits to meet various
demands of clients. If our customer wants to get the best priceperformance ratio, we recommend the button bits made with
“Carbide Hot” inserting technology for hard rock drilling and the
button bits made by “Carbide Cold” inserting technology for soft
rock drilling.
Carbide Hot inserting
technology
The technology was introduced
from Finland and same as that
of Sandvik and Altas Copco.
Raw materials are equivalent
to Sandvik or Atlas Copco’s.
The processes of Carbide Hot
inserting technology is as
follows:
“D” is the diameter of carbide
hole on the steel body of the
button bit, “d” is the diameter of
the carbide. Before the button
bit is put into the heating
furnace, “d” is bigger than “D”
by a very small amount. After
heating the steel body of the
button bit expands and this
makes “D” equivalent to “d”.
And then our engineers hammer
carbide into the hole. After the
temperature of steel body is
chilled, the carbide hole
contracts and hold the button
firmly.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
d
d
d
D
d>D
(Preparation
for carbide
inserting)
D
d=D
(Carbide
inserting)
D
ROCK TOOLS
Carbide Cold inserting
technology
Considering the characters of soft
rock drilling, we developed
Carbide cold inserting technology
and choose inexpensive raw
materials to optimize the priceperformance ratio.
The processes of Carbide Cold
inserting technology is as follows:
“D” is the diameter of carbide hole
on the steel body of button bit, “d”
is the diameter of carbide. Before
carbide inserting, “d” is bigger
than “D” by a very small amount.
Because the steel body of the
button bit has good elastic
deformation propertys, the carbide
hole can hold the carbide firmly
after a hydraulic machine is used
to press the carbide into the hole.
JSI invented a set of special
tooling machines and fixtures to
ensure the carbides can be
inserted into the carbide hole with
absolute precision.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
d
d
D
D
d>D
(Preparation of
carbide
inserting)
d
D
d>D
(Carbide
inserting)
(inserted)
ROCK TOOLS
Premium raw materials and reliable suppliers of raw materials
In order to ensure high quality, JSI
use premium alloy steel and
tungsten carbide to make the button
bits. The grade of our alloy steel is
equivalent to Sandvik and Atlas
Copco, and JSI tungsten carbide
comes from ZCCCT who import
advanced production line product
from Sandvik and Element Six. The
raw material of extension rods - JSI
use is equivalent to Sandvik
Sandbar 61.
All raw materials used by JSI for rock drilling tools have
passed the strict and long term testing process.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
Latest Technology to achieve perfect Design & Quality Control
JSI threaded button bits are made
by CNC production center. Carbide
inserting technology adopts
“Carbide hole one-drilling forming
after heat treatment”, which omits
the traditional processes such as
“Carbide hole reaming”, “One
carbide hole matches one carbide
after carbide polishing” etc. Longterm quality stability of products
can be ensured by avoiding human
error in the production process.
Advanced digital processing
equipment makes the thread of
extension rods and button bits more
smooth, especially the thread end,
which dramatically reduces the
stress concentration and breakage
at the thread end of the rods.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
JSI’s professional tooling equipment
for carbide inserting ensures perfect
connection between the carbide and
the carbide hole. The carbide can be
pressed into the carbide hole
precisely, which reduces the possible
damage of the carbide and carbide
hole, and thus avoiding carbide
breakage and “drop out”.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
Rigorous testing processes of new products
JSI buttons bits go through a rigorous testing process before
being put into the market:
1. Testing on a variety of rock formations:
soft rock, hard rock; iron ore, gold, copper,
phosphate, granite etc.;
2. Testing on a variety of drill rigs: such as
Atlas Copco ROCD7、ROCD9, Sandvik
Ranger700、 Ranger800, HCR900、
HCR1200 etc
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
3. Testing of multiple batches and large
quantity’s (over 1,000 PCS) before B11
button bits are recommended to clients.
•JSI button bits have been proven to have a long lifespan and
high stability.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
B76T38-R842A2 Button bits for hard rock B76T38-R842A2
Carbide hot inserting technology
B76T38-R842A2 is used in granite quarries in Southeast Asia and Africa.
The lifespan of our button bit before the carbide is sharpened is 300m.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
Button bits for soft rock B89T45-V854 Bit Carbide cold inserting
technology
B89T45-V854A is used in hydropower projects in the Northwest of China.
Average penetration rate is 1’ 40’’ per rod ( Length of Rod is 3.66m),
which is 10% faster than other suppliers’. The bit achieved 900m per day,
more than other suppliers’ 75m in the same working conditions which
helps our clients to earn more profit.
B89T45V854A
2.5
Domestic brand
JSI
2
1.5
1
0.5
0
Penetration
rate (m/s)
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
Benefit (RMB/Day)
ROCK TOOLS
Button bits for Hard rock B89T45G963A
Carbide hot inserting technology
B89T45-G963A is used in Gabbros Quarry in the Middle East.
B89T45-G963A
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
Button bits for open-pit mining
B115G60-RD874A
Carbide hot inserting technology
B115G60-RD874A is used in open pit mines in Russia. The lifespan is
very close to leading suppliers in the same working condition, but the
JSI price is significantly more cost effective.
JSI
LS1
LS2
1
0.8
0.6
0.4
0.2
0
Lifespan
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
Price
ROCK TOOLS
Button bits for open pit mining
B140G60-993H、B140G60-882M Carbide hot inserting technology
B140G60-993H and B140G60-882M are used in extremely hard and
abrasive rock of open-pit mines in Argentina, the lifespan of the bit is
160m before sharpening the carbide, which is better than leading
suppliers bits, and the JSI price is significantly more cost effective.
Hard & Extremely Hard Rock - Open-pit
Mine in South America
JSI
LS2
1.2
1
0.8
0.6
0.4
0.2
0
life-span(m)
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
price (RMB)
ROCK TOOLS
Extension rod T45-3.66m
Drill rod for Quarrying &
Mining, MF rod T51-3.66m
The life-span of our rods is similar to
leading suppliers’, but the price is
significantly more cost effective.
Hydropower Construction in
Southwest of China
(ERD45-366-T45)
JSI
LS1
LS2
10000
5000
0
life-span(m)
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
price (RMB）
ROCK TOOLS
Open-pit Coal Mine in Northwest of
China
(MFD51-3.66-T51)
JSI
LS1
LS2
10000
5000
0
life-span (m)
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
price (RMB)
ROCK TOOLS
Stock Available
In order to meet urgent demands of clients, we keep plenty of stock on hand.
Drilling products are dispatched on time every time.
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz
ROCK TOOLS
Are you looking for substitutes of the
expensive rock drilling tools from the famous
suppliers?
Are you looking for more acceptable products by
clients?
Are you looking for reliable manufacturer of rock
drilling tools for long-term cooperation?
Are you looking for a partner who can offer high
quality services?
Contact us:
Web: www.drillconnex.co.nz
Charlie Mob: 021 742 620
Lance Mob: 021 998 762
Glenn Mob: 021 855 963
Email: charlie@drillconnex.co.nz
Drill Connex Ltd, 69 Creek Street, Drury, Auckland
Lance 021 998 762, lance@drillconnex.co.nz
Charlie 021 742 620, charlie@drillconnex.co.nz
Glenn 021 855 963, glenn@drillconnex.co.nz