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SURFACE DRILLING & LOADING

http://www.joyglobal.com/surface-mining/blasthole-drills

Electric drive in larger hydraulic excavators

continues to gain momentum. Hitachi

Construction Machinery – Americas

recently announced the introduction of five

mining electric drive shovels to the US and Latin

American markets – the EX1900E-6, EX2600E-6,

EX3600E-6, EX5600E-6 and EX8000E-6. The five

EX-6 electric drive mining shovels feature an

advanced zero-emission electric drive motor

designed to provide a cost-effective solution to

mining operations where low-cost electric power

is available.

“The combination of features on the new EX-

6 electric drive shovels will deliver value to our

customers by providing higher productivity and

lower total cost of ownership through efficiency

reliability and durability,” said Craig Lamarque,

Division Manager, Hitachi.

The Hitachi TFOA-KK electric motors are

powerful, tough and require less overhauling,

periodic inspection and service. The motor’s

voltage ranges from AC 6600V-6900V/60HZ and

results in a rated continuous output ranging

from 610 kW on the EX1900E-6 to 1,200 kW x 2

on the EX8000E-6.

“The design of the new EX-6 series electric

drive shovels results in simplified and improved

daily maintenance. The machines do not need

costly consumables such as engine oil, filters,

coolant or fan belts. Components related to an

engine are also eliminated, such as radiators, air

filters and mufflers. In addition, an auto-

lubrication system eliminates cumbersome daily

lubrication and a fast-filling system enables

ground-level refills reducing time during regular

stops.”

The five shovels are equipped with Hitachi’s

exclusive level crowding and arc digging system

that provides high productivity while ensuring

efficiency.

Operators have access to Hitachi’s best-in-

class operator station that features increased

visibility and comfort. Fluid-filled elastic mounts

reduce cab shocks and vibration by 20-30%

compared to rubber mounts, and the advanced

multi-display monitor provides operators with

key machine status information. “This provides

more accurate machine driving status

information which will, in turn, improve machine

performance and uptime.”

The shovels come standard equipped with a

remote machine monitoring system that

provides access to machines from a personal

computer in an office through Hitachi’s Global e-

Service. Operating data are transmitted to a

Hitachi server for processing, and then to

Extraction excellence

Paul Moore reviews newmachines and best practiceacross hydraulic excavators,rope shovels, wheel loadersand surface drills

SURFACE DRILLING AND LOADING

International Mining | APRIL 2016

The Atlas Copco teleremotesystem allows the operator to

perform any drill functionremotely, to include auto

functions (operator assist andautonomous). The system is

scalable for an operator tocontrol one to many drills

The electric EX8000E-6 is now available in theAmericas

customers and dealers. This system is available

24 hours a day, all year round. All five electric

shovels come with the optional SkyAngle™

system designed to increase peripheral vision

around the excavator by providing synthesised

multiple images captured by cameras

specifically positioned at four locations around

the excavator. The feature displays camera

views on a single monitor to allow operators an

auxiliary means of checking for ground level

obstacles.

The EX-6 electric drive mining excavator front

attachments are made from welded steel plates,

not cast structures. The boom and arm are

welded from low-stress and high-tensile strength

steel for a full box section design. This rigid box

design resists twisting and bending forces.

The undercarriage design for the five new

models is the same as Hitachi’s popular Giant

EX Series. The track shoes incorporate a triple

grouser design and single roller; and roller

guides are used to extend service life for track

shoes. All models feature a filtered and

monitored hydraulic system that will monitor

and warn operators about machine hydraulic

health.

Komatsu designed its new 677 t PC7000

machine, also featured in IM March 2016, with

the aim of creating the safest and highest

performing shovel in its class. Powered by two

1,250 kW diesel engines, the Komatsu PC7000

can lift a 36 m³ front shovel bucket. Adapting todifferent mining approaches and circumstances,

Komatsu also provides, in option, backhoe

attachments with a 36 m³ bucket and an electricdrive train.

By design, the shovel matches 240 to 290

short ton trucks such as the Komatsu 830E and

Komatsu 860E. “Operators will experience

improved ease when digging and bucket filling,”

as Komatsu reviewed both the bucket design

and hydraulic layout. With the new open circuit

hydraulic system the shovel swings faster and

penetrates the material easier. Reduced

maintenance time, thanks to increased width of

walkways and repositioning of major service

points for easier access, was taken into account

when scheming the shovel. Komtrax Plus, the

latest Komatsu machine monitoring system, is

installed on the machine and lets customers

check the operating status of their machine. On

request, data can be transferred via satellite

directly to maintenance specialists, to inform

them of actual hydraulic pressures and engine

performance.

Continuing to improve machine and human

safety, Komatsu developed a new safety concept

for this new machine. The Komatsu PC7000 is

equipped with an illuminated 45° primary

access and egress stairway. In case of emergency,

a solid anti-slip, flip-down ladder provides

secure egress form the cab and machinery

house. In addition, Komatsu has upgraded the

light arrangements to LED technology for

brighter and safer service and operation.

Also at Bauma 2016 and covered in IM March

2016, Liebherr has launched its new entry into

the 200 t excavator class: the R9200, built to

complement the broad mining product range.

The 12.5 m3 bucket is the biggest in its class,

and offers sustainable performance while

delivering peak fuel burn efficiency, even in the

most challenging conditions. The mining

excavator is designed to match mining trucks

with payloads of up to 140 t.

The new excavator is powered by the

Cummins QSK38 diesel engine that complies

with US EPA Tier 2 or 4i exhaust emission limits

and has a rated output of 810 kW. The cutting-

edge cab of the R9200 provides the operator

with a panoramic view of their operation, which

leads to efficient truck loading and safe machine

positioning. The R9200 integrates an advanced

electronic piloting control system which is both

intuitive and versatile.

Paul Moore spoke to Swann Blaise, Group

Leader – Marketing Department at Liebherr-

Mining Equipment Colmar SAS on its key areas

of demand and product developments. The

group is seeing demand for its 100-200 t and

300-400 t class hydraulic excavators in Western

Europe, South Africa, the Middle East, and

Oceania but also in new countries such as

Panama and Myanmar.

In terms of adding value in terms of

aftermarket service/parts supply in the current

market, he states: “We will continuously expand

our global product offerings. This includes

offering such as general and customer focused

repair and reman programs, tools such as the

Liebherr Trouble Shoot Advisor, training and

support offerings and last but not least the

expansion of our global service network. Our

products will be supported through product

service specialists with a customer minded

approach for solution finding. The final target is,

for those products which we have in our

portfolio, we want to be the preferred choice for

mining customers.”

In addition, as an OEM, Liebherr has built a

solid reputation for its development and

production of high quality strategic mining

components, from engines to GET and it aims to

continue this “as it ensures reliable performance

for the entire machine.”

Liebherr is seeing demand for its 100-200 t and300-400 t class hydraulic excavators inestablished markets but also in new countriessuch as Panama and Myanmar


APRIL 2016 | International Mining

http://www.joyglobal.com/services/machine-assembly-and-rebuilds/machine-rebuilds/drifter-conversion-programs

On increasing interest in electric excavators,

Blaise points out that the fuel price economy

with an electric excavator is not the main

advantage, rather the electric drive version is an

efficient alternative as it means less vibration

resulting in higher component lifetime; lower

maintenance costs; less noise pollution; high

motor efficiency; and maximum efficiency in

cold climate conditions when combined with an

Arctic kit. The increased demand for electric

machines is mainly from owner operators rather

than contractors, who prefer the greater

flexibility of diesel machines. The electric

Liebherr range now includes models right up to

the largest R9800.

In terms of what the market can expect in the

future for the next generation of shovels from

Liebherr, the company told IM: “We have

identified six main subjects that are driving the

success of our customers. These subjects, the

Liebherr ‘6 pillars’ are: Reliability, Efficiency,

Productivity, Safety, Customer Service and

Environment, all finally impacting the cost per

tonne. Liebherr will focus to improve our mining

range with a focus on these 6 pillars.”

The new EC750E crawler excavator from Volvo

Construction Equipment features “fuel efficiency

innovations, increased productivity and

performance that helps ensure maximum return

on investment.”

The EC750E from Volvo Construction

Equipment is a 75 t class crawler excavator that it

says offers the “perfect combination of power

and stability to deliver high capacity in most

applications.” Powered by Volvo’s Tier 4

Final/Stage IV compliant D16 engine, the heavy-

duty excavator delivers increased horsepower of

374 kW utilising advanced fuel efficiency

technology, “ensuring an extremely responsive

operation for maximum productivity and

profitability.”

The EC750E also offers an innovative electro-

hydraulic system, optimised to operate in

harmony with the robust engine, delivering

greater operator control and productivity. The

hydraulics, in combination with Volvo’s advanced

ECO mode, work in unison to reduce internal

losses in the hydraulic circuit – resulting in

improved fuel efficiency without loss of

performance in most operating conditions.

“Built with the operator in mind, the industry-

leading Volvo cab delivers a superior operator

experience, with a low-noise environment for

optimum operator productivity. Ergonomically

positioned interfaces – including the joysticks,

keypad and LCD monitor – and clear all-around

visibility ensures maximum efficiency and ease of

use. The spacious cab features ample storage

and leg room, 12 air-conditioner vents and

adjustable seat, keeping the operator fresh, alert

and focused.”

The EC750E yields superior digging

performance, including maximum break out

forces of 328 kN, as well as good fuel efficiency

and quick cycle times for a maximum return on

investment. “The well-balanced excavator

features a wide track gauge, long track length, a

retractable undercarriage and an optimised

counterweight for solid stability, enabling

operators to work with confidence in adverse

terrains. An integrated work mode system is

designed to enhance fuel efficiency and machine

performance, allowing operators to choose the

best work mode for the task at hand, ensuring

the correct configuration for any job.”

To further enhance controllability, these

machines are equipped with high system

pressure and durable tracks to ensure greater

power and ease of handling when climbing

gradients and travelling over unstable ground.

With the ability to access hard-to-reach areas of a

jobsite, combined with the newly developed fully

electro-hydraulic system, customers can cut cycle

times to a minimum and increase profitability.

The EC750E features a reinforced heavy-duty

boom and arm that are built from high strength

tensile steel, designed to work in harmony with

the machine, maximising uptime and performance.

For added protection and reliability, even in

severe conditions, steel strips are welded under

the arm, and a built-in, heavy duty plate is

featured on the underside of the machine. Built

with protected components, including a strong

frame structure for longevity and sustained uptime

in demanding applications, the EC750E enables

customers to achieve almost non-stop production.

To further maximise uptime, the machine

provides the customer with quick and safer

servicing, thanks to easily accessible

maintenance points via the wide-opening and

conveniently located compartment doors, using

central and surrounding walkways.

For added safety and durability, optional FOG

(Falling Object Guard) and FOPS (Falling Object

Protective Structure) certified cabs provide

peace-of-mind for working in tough applications.

The EC750E can also be fitted with a full length

track guard for added protection.

To increase versatility, these excavators are

compatible with a range of durable attachments,

including the general purpose, heavy duty and

extreme-duty buckets. Purpose-built to work in

coordination with Volvo machines, the Volvo

attachments form one solid, reliable unit.

The EC750E can also be equipped with a Volvo

hydraulic breaker to degrade even the most

challenging materials. With consistent power and

high breaking force, customers can benefit from

maximum impact and durability.

Volvo also offers an attachment management

system, allowing the settings for up to 20

different attachments to be stored. The system

allows the operator to pre-set hydraulic flow and

pressure inside the cab through the touchscreen

monitor, ensuring versatility through the use of

various attachments.

Russian training and best practiceOne of the two leading Russian shovel suppliers,

IZ-KARTEX, launched a new training complex in

January 2016, made by Transas, one of the

leading Russian manufacturers of simulators. The

EKG excavator training complex is designed to

help operators adapt to working with a new line

of excavators and allow operators to absorb

training techniques and methods of work for the

safe and productive operation of the machines.

The complex is a full training facility,

consisting of an instructor module and driver

module. The driver module simulates the cab of

the excavator – a chair on the dynamic platform

with a remote control. The simulator cabin of the

excavator is equipped with instrumentation,

monitoring and alarm devices corresponding to

their placement in a real excavator cabin.

The virtual excavator working equipment

corresponds to the real conditions of the

excavator and characteristics of the rock mass.

Through the use of a dynamic platform and cabin

environment, the closest approach in the learning

process is achieved.

This training complex was made to train

operators mainly from companies purchasing

excavators with a 20-25 m3 bucket capacity (EKG-

18R, EKG-20K, EKG-20KM).

In terms of new machine deliveries, a second

IZ-KARTEX EKG-10 started working at the

Taybinsky coal mine at the end of October 2015.

The uniqueness of this machine is that it will be

powered by AC drive, the first time this solution

has been used on an EKG-10. The use of the AC

drive reduces the load on the mechanical

equipment (reduced moment of inertia,

intelligent control), reduces the amount of

maintenance (no brush assemblies in electrical

machines), and allows the use of the information

system to increase efficiency. The shovel was

mounted by the regional service company OMZ-

Siberia-Service. The Taybinsky coal mine was put

into operation in November 2014, and is located

near Kiselevsk in the Kemerovo region. The

estimated working life of the mine will be 49

years.

At a mining conference recently organised by

Russia’s other main excavator maker Uralmash,

experts, scientists and manufacturers discussed

trends in the development of modern mining

equipment, techniques and their efficiency.

Uralmash was controlled by IZ-KARTEX owner

OMZ until mid-2015 when it became part of

Gazprombank – Machine-Building.

Within the framework of the conference, the

delegates analysed trends in open pit mining and



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ore-preparation techniques, looked at offerings

from domestic manufacturers, and the

development of loading machines with a case

study of a Uralmash EKG-18 excavator. The

delegates also visited production shops where an

EKG-18 for ZAO Polyus was being prepared for

shipment, and saw the results of an investment

program from 2013 and new plans to upgrade the

production facilities in 2016-2017. The main plant

products for the coming years will be power

shovels with buckets of 12 to 35 m3.

The investments in the development of these

production facilities will provide for the

manufacture of 10-12 excavators per year and to

date, contracts for eight EKG-18 excavators have

been signed. But there is also a lot in the

pipeline. New orders include from the ZAO

Stroyservice company, which is buying five

excavators with a 18 m3 bucket for the Kuzbass

region. Copper giant Ural Mining and

Metallurgical Company (UMMC) is also

examining possibilities for the placement of

orders for 23 large walking and crawler-mounted

excavators for the period up to 2020; while coal

major Kuzbassrazrezugol OAO, has drafted a

contract for a new EKG-35.

China’s TYHI continues growthIn China, in September 2015, market leader

Taiyuan Heavy Industry (TYHI) signed a contract

for two WK-12 excavators to go to CCL India

(Central Coalfields Ltd), a subsidiary of Coal India

Ltd). These add to machines delivered in recent

years to South Africa, Chile and elsewhere.

In the domestic market, TYHI has a contract for

five large WK-35 shovels which are specially

designed for high altitude operation, for delivery

to Tibet Dragon Copper Industry Co Ltd. The order

dates to November 2014 and one unit has now

been delivered. TYHI has since also signed

further contracts for five WK-12 shovels and five

60-110E Semi-Mobile Crushing Stations with the

same customer. A further new 60-110E Semi-

Mobile Crushing Station order was signed with

Yuanjiacun Iron Ore, part of TISCO, in June 2015,

which is the second installation of this model

TYHI will have provided for this customer. An

order for a 9,000 t/h spreader was also signed at

the same time. These TISCO orders will start

being delivered in May 2016. Finally, TYHI has

signed a contract for a 4,500 t/h spreader with

Baotou Steel Ltd in January 2016; while a 60-89

Semi-Mobile Crushing Station, specially designed

for Panzhihua Steel, is currently being

commissioned.

FLANDERS and shovel FreedomShovels are continually designed with larger

dippers and associated infrastructure to increase

production efficiency. Unfortunately, the shovel

mechanical structure and material handling

capacity can exceed the DC motor’s ability to

support the full potential of the shovel.

FLANDERS says it has addressed this mismatch

by developing the Freedom™ platform.

“The shovel boom and mechanical structure

are at its weakest point while at fully extended

crowd, high in the bank with the hoist motors at

or near stall condition. The shovel operator

instinctively manipulates the crowd to

compensate for the potential lack of crowd and

hoist power. Each time the crowd is actuated to

correct this impending stall condition, a full

fatigue cycle is exerted on the boom, ropes,

sticks and body. This can lead to excess rope

wear, boom and dipper stress-fractures and early

motor failure. These conditions also manifest into

reduced shovel cycle time. The Freedom Platform

monitors these stresses in real-time and

dynamically delivers increased hoist motor

torque when favourable dig conditions allow. This

is typically low in the bank where the shovel is

structurally at its strongest point.”

Freedom utilises an open architecture software

that monitors shovel stresses and electrical

system parameters to provide state-of-the-art

adaptive controls. Hoist torque is increased only

when dig conditions allow. By using a FLANDERS

crowd motor, that provides an increased available

stall current of up to 50% (when properly

equipped) over the OEM motor, the operator is

able to enter the bank with more cutting force,

and fill the dipper early in the dig cycle, low in

the bank.

“FLANDERS is the only company in the market

to provide real-time feedback to respond and

modulate the hoist rope tension in response to

actual field dig conditions felt by the boom,

unlike competitive offerings that are solely based

on a pre-engineered and perceived position of

the dipper in relation to the dig face.”

FLANDERS’ Freedom upgrade includes the

following critical components – FLANDERS

exclusive Optimised Bank Performance (OBP);

the Freedom Control System; ABB DCS800

drives; FLANDERS Enhanced Crowd Motor; and

FLANDERS Enhanced Hoist Motors (which are

optional).

“The DCS800 drives provide you with the

security that you are utilising state-of-the-art

technology that will be supported for years to

come. FLANDERS exclusive open-architecture

allows you to choose either FLANDERS or an

existing OEM hoist motor. Our Freedom upgrade

incorporates the substantially improved

reliability and performance of FLANDERS’

designed M21 and F22 crowd motors. These

motors fit in the same footprint as OEM crowd

motors, and boast increased available stall

current of up to 50% when properly equipped.

This translates to more allowable torque low in

the bank and ultimately faster cycle times.

FLANDERS’ crowd motors have shown

documented electrical life of greater than >100%

over competitive motors. This supports longer

uptime, reduced maintenance cycles, and lower

cost of repairs.”

FLANDERS designed M24 and M22A motors

are offered as a drop in replacement for current

hoist motors. “The motor is designed to provide

additional torque and deliver exceptional life

compared to the OEM motor. Current applications

have seen near 40,000 h of continuous operation

with no major maintenance or rework. Equally as

important, the commutator incorporates

FLANDERS’ exclusive design that minimises

degradation in life after performing turn and

undercut refurbishment. Unlike competitive

motors that may actually weaken the armature

after rework, our motors will continue to

outperform its rivals.”

The company says that the Freedom upgrade

can provide increased reliability, machine up-time

and lower cost of maintenance, estimating that

the Freedom system will yield an 8-10% increase

in productivity (tonnes/sec) and more material

moved at a lower cost per tonne.

New bucketwheel generationBucketwheel mining retains an important place in

the bulk mining and handling market. The

Industrial Solutions business area of

thyssenkrupp will presents a new generation of

compact bucketwheel excavators at Bauma

2016. Known as the “Barracuda” and the “Mine

Summary of theFreedom™ platformfrom FLANDERS


Shark,” both machines can work in hard

materials with compressive strengths of up to 50

MPa. While bucket wheel excavators today

mostly work in soft and medium-hard rock with a

UCS of up to 20 MPa, this newly designed type of

equipment is capable of working in a broad range

of materials including coal, limestone, phosphate

rock, potash, frozen materials in winter conditions

as well as in corresponding overburden layers.

In order to fulfil the requirements of the severe

working conditions, special bucket and tooth

designs have been applied by thyssenkrupp

Industrial Solutions. These designs are based on

innovative testing methods and include a larger

number of teeth and buckets. This stage of

development of bucket wheel excavators

demonstrates the changing character of the

extraction process from digging to cutting.

“The combined extracting and loading process

within a single machine eliminates hazardous

and ecologically harmful blasting as well as

additional loading activities. That is why health

and safety standards at the highest level can be

ensured. Considering the fact that the new

bucketwheel excavators are able to produce

throughputs of over 3,000 t/h, a lesser number of

vehicles and manpower are required, the

operational expenditures can be reduced

significantly.”

To get a first impression of the new generation

of compact bucketwheel excavators from

thyssenkrupp, their working principle and

application possibilities, a model of the

“Barracuda“ will be on display at Bauma 2016.

thyssenkrupp told IM that it has supplied several

standard size bucketwheel excavators to Serbia

in recent years. In addition, thyssenkrupp has

executed multiple modernisations and

refurbishments of bucketwheel excavators in

Germany, India, Kosovo and Serbia.

Tenova TAKRAF’s bucketwheel evolutionTenova TAKRAF is a pioneer in bucketwheel

excavator (BWE) technology, having supplied the

world’s first machines for industrial use in the

early 1920s. Then and now, its office and

workshop in Lauchhammer, Germany is the

centre of expertise for Tenova TAKRAF’s mining

technologies. The company told IM: “There has

been a 90 year evolution of BWEs that reached

its peak in the 1980s in the various German

lignite mines. This is where Tenova TAKRAF

installed one of the largest machines ever, a true

giant, with a daily capacity of about 240,000 BCM

[bank cubic metres] at RWE’s Hambach mine.

BWE technology has also been successfully

introduced in various countries ranging from

other mines in central and southeastern Europe

to Asia and Australia. In conjunction with

shiftable and quickly relocatable conveyor

systems, the overall operating costs are very low.

It has been proven that for medium and long-

term operations for soft and medium-hard

materials, the lifecycle costs are unbeatable as

compared to shovel and truck operations.”

In 2015, Tenova TAKRAF finalised its most

recent BWE project for NLC at the Neyveli lignite

mine in the Indian state of Tamil Nadu. This

project was conducted and executed mainly by

TAKRAF India with support from TAKRAF Germany

on an overall lump sum turnkey basis. The design

rate per individual machine is 5,460 m3/h (loose)

which refers to about 40,000 m3 of bank material

per day. With a 34 m long bucketwheel boom, the

machine can reach a digging height of 30 m. This

is roughly 2.5 times more than what the largest

shovels can safely handle. “The design of these

excavators was adapted to the significant variety

of Neyveli’s overburden characteristics between

soft and sticky at the one extreme, and hard and

very abrasive at the other.”

Tenova TAKRAF also received an order to

conduct the entire maintenance for the machines.

“This is a very interesting new area for us”, Dr

Frank Hubrich, CEO of Tenova TAKRAF, told IM –

“It’s a typical win-win situation for us as the

OEM, and for our client. We become part of the

daily operation and we are thus able to quickly

fine tune details of the machine for improved

performance and availability.”

Just a few months before the hand-over in

India, Tenova TAKRAF passed a performance test

with its latest BWE from the well-known SRs

2000 series, which boasts more than 50

worldwide installations. It is also employed in

overburden applications; however the challenge

in this instance pertained to both the slope

conditions and the cold climate in the area of

Inner Mongolia in China.

The attached picture provides a good view of

the conditions the machine was designed for.

Although it reaches the same 30 m digging

height of the Indian machine, this machine

required a 10 m longer boom. This was deemed

essential for safe excavation, which requires that

there be relatively flat side slopes. The design

rate is 6,600 m3/h (loose); so the machine falls

within the 60,000 BCM per day class. The

machine is connected to the face conveyor via a

telescopic loading unit, which avoids any floating

transfers.

In 2008, Tenova TAKRAF handed over a BWE of

model SRs(H)1050.23 to the Macedonian Brod

Gneotino mine. The typical compact design of

this machine is based on a BW boom supported

by two hydraulic cylinders underneath. This

avoids any boom suspension on top of the

machine as would normally be the case in larger

BWEs, such as the mentioned machines in India

and China. The counterweight boom is simply

attached to the ring girder of the turntable below

the discharge boom. For boom lengths of up to

30 m, this design is far more economic.


The Industrial Solutions business area ofthyssenkrupp will presents a new generation ofcompact bucketwheel excavators at Bauma 2016



A special feature of this BWE is a hydraulic

levelling system that allows the machine to travel

and operate on benches with a longitudinal slope

of up to 11%. This machine is the largest compact

BWE employing this technology. For mines with

inclined seams, this option becomes an

important operational advantage for being able

to selectively excavate along the boundaries of

the layers. The Macedonian machine has a

design rate of 4,800 m3/h (loose), and reaches a

maximum digging height of 23 m with its 27 m

long boom.

On wider applications, Dr Hubrich also stated:

“The BWE has been mainly employed in lignite

and coal mine operations. However, this exciting

technology has an interesting future in

alternative areas where large amounts of

material have to be moved – I am thinking of

larger scale sand mining for construction and

land reclamation, as well as mineral sands

projects. The continuous method of digging and

slowly moving equipment also provides an

excellent opportunity for highly automated

solutions.”

Wheel loader developmentsKomatsu America Corp recently introduced its

new WA600-8 wheel loader. Equipped with an

EPA Tier 4 Final certified engine, this latest

addition to the wheel loader family combines an

enhanced lockup torque converter function and

SmartLoader logic to achieve low fuel

consumption and high travel speeds.

By optimising control of engine power, and

improving power train and hydraulic efficiency,

the WA600-8 consumes up to 13% less fuel than

its Tier 3 predecessor. Also, the standard bucket

capacity is increased to 9.2 cubic yards and the

bucket now fills easier, retains material better

and provides better visibility, contributing to

machine efficiency and productivity.

“With significant enhancements in production

capacity and fuel economy, the WA600-8 is

designed to maximise production efficiency in

loading off-highway trucks or load-and carry

applications,” said Rob McMahon, Product

Manager for Komatsu America. “Full rear fenders

with steps and handrails at both sides of the

machine add convenience for daily inspections.

And operators will appreciate enhancements in

cab comfort and machine stability,” McMahon

said. The Komatsu Diesel Particulate Filter (KDPF)

and other after treatment components were

designed in conjunction with the engine for

efficiency and long life. More than 98% of KDPF

regeneration is performed passively, with no

action required of the operator and no

interference with machine operation.

Komatsu’s SmartLoader Logic, combined with

the enhanced lockup torque converter that

activates in 2nd, 3rd and 4th gear, provides

optimal engine torque for improved acceleration,

hill-climbing ability, a higher top speed and fuel

savings.

The pioneering KOMTRAX Plus telematics

system and monitor provides key machine

metrics, including KDPF status and DEF-level

data, fuel consumption, plus performance

information collected and sorted by operator ID;

while Komatsu Auto Idle Shutdown reduces idle

time and saves fuel.

The Variable Traction Control system and

Modulated Clutch system provide optimal tractive

effort for various ground conditions.

The new Hyundai HL970 wheel loader is

making its way to the European market this year

at Bauma 2016. The new 23.5 t wheeled loader,

with a 3.6-4.2 m³ bucket capacity, is currentlyone of the largest of its stable mates which

comprises the recently introduced 15 t HL955 and

the 18.8 t HL960 completing the new wheeled

loader line up for now. The HL970 is powered by

a Scania DC09 085A Stage IV engine boasting a

gross 232 kW. Hyundai has opted for a combined

solution of EGR and SCR technologies, without

the need for an additional DPF. The new machine

is up to 10% more fuel-efficient in truck-loading

than its Dash 9A Series predecessor, depending

on the application, and has a travel speed of up

to 40 km/h. Bauma 2016 is also the world

premiere for the HL980, with a 5.4 m3 bucket

capacity and weight of 31 t with a net power of

280 kW from a Scania DC13 engine.

Hyundai states: “The robust and powerful

HL970 is well suited to the quarrying, mining,

construction and material handling sectors. The

high-strength design structure and robust system

has been proven by rigorous road tests at various

work sites. The durability of the hydraulic hoses

and attachments has been improved significantly

compared to the previous generation of Dash 9A

series.”

In addition to its fuel efficiency the HL970

benefits from an ECO Pedal, which when the

operator uses the accelerator pedal, he/she is

able to distinguish between economical

operation and power operation – it recognises



BWE SRs(K)2000.30 at Zhahanaoermine, China

Bauma 2016 will be the world premiere for theHL980, with a 5.4 m3 bucket capacity and

weight of 31 t and a net power of 280 kW froma Scania DC13 engine

the economical operation which in turn reduces

the fuel consumption.

The HL970 is also fitted with an ECO Gauge

which enables the economic operation of the

machine. The gauge level changes colour with

the engine torque and fuel efficiency level. It is

also able to provide the status of fuel

consumption so that the average rate and the

total amount of fuel consumed are

displayed. Hourly and daily based fuel

consumption can be checked in detail which

helps the operator run the machine more

economically and efficiently.

The automatic/manual cumulative weighing

function greatly improves operating efficiency.

Icons displaying weighing errors and the two-

colour weight value indicator on the monitor

enable accurate weighing to support efficient

production management.

Hyundai engineers have also redesigned the

wheel loader buckets on the HL series and they

now have a better fill factor and an additional

spill guard to minimise spillage of loaded

materials. The HL970 boasts up to 5% greater

productivity in comparison to the Dash 9A Series.

The boom and bucket are both controlled by

either the joystick or fingertip system. The new

wheel loader is also available in an XT version for

a larger dumping height.

Best practice in wheel loader operationBased on numerous production studies

conducted at mines around the world and at

Caterpillar proving grounds, Caterpillar wheel

loader applications specialists have

recommended a number of best practices for the

most efficient face loading, many of which are

common sense but are still not implemented by

many operators. Its range includes the 993K and

994K which are widely used in mining for their

flexibility in tasks such as blending.

In terms of site prep for wheel loader

efficiency, Cat states that the optimal bench

height is at the maximum lift height of the loader.

“Higher benches have the potential to collapse

and overload the bucket, which can damage the

loader. Avoid a steep material slope angle as this

can cause material to fall unexpectedly into the

bucket, overload the machine and cause damage.

Maintain a smooth floor and good drainage,

because wet rocks cut tyres easier.”

Better operations also require cleaning the

floor between trucks to maintain good floor

conditions. This helps avoid loader and truck tyre

damage and helps minimise truck manoeuvring,

which wastes time and fuel, when pulling in and

out of the loading site.

On pile engagement and bucket fill efficiency,

wheel loader operators should “begin loading

the bucket as low as possible right above the

floor for optimum pile penetration. Do not drive

into the pile with the front wheels to reduce

potential for damaging the tyres. Avoid tyre spin

to reduce tyre wear and tyre cuts. Keep the frame

straight when digging to maximise pile

penetration and production.”

Cat recommends a loading time at the face of

less than 15 seconds for high production, good

fuel efficiency and reduced heat generation and

wear in the torque converter. “Lift the bucket

before crowding the bucket into the pile, because

crowding is not producing material, but it is

unnecessarily burning fuel. The bucket should be

full when the lift arms are horizontal. Continuing

to fill the bucket above horizontal is not efficient

and does not use the strength of a wheel loader.

Never operate a bare bucket edge, because it will

ruin the bucket. Make sure ground engaging tools

are in place and are replaced when worn out.”

Finally on truck-loader efficiency, the operator

should spot trucks with a loaded bucket.

Spotting trucks with an empty bucket means the

loader isn’t moving material during part of the

cycle, which wastes time and fuel. “Keep the

rear tyres of the truck off the pile to avoid

damage to the truck tyres. Spot trucks at 45° for

ease of pile-to-truck approach and to minimise

cycle time. Use a tight V pattern with the loader

into the truck to minimise loading time and

maximise production. This also limits tyre travel

to reduce tyre wear and fuel burn. Position the

loader 1.0 to 1.5 wheel revolutions from the face

to the truck to minimise cycle time and improve

production. Pad the truck bed with smaller

material when loading oversize rocks to protect

the truck bed from damage. Minimise wait time

between trucks for good production efficiency.”

New drilling solutionsIn new models, the Caterpillar MD5075C Track

Drill replaces the MD5075 and is capable of

drilling holes of 76 to 114.3 mm in diameter to a

depth of 31 m. The fuel efficient 224 kW C9

engine can be configured to meet emissions

standards worldwide. The compressor, which

features widely variable air control, produces 350

cfm @ 150 psi (9.9 m3/min @ 10.2 bar).

Two different rock drill choices enable matching

to the application to achieve the highest production

rate. The standard rock drill on the MD5075C is the

HPR5123, which uses 45 or 51 mm drill rod. Also

available is the HPR4519 Rock Drill, which uses 45

mm drill rod. Caterpillar says it is the only

manufacturer offering rock drills designed to be

serviced on-site for reduced downtime and costs.

The control system features touch screen

navigation for Drill Assist, rearview camera, tram,

water, rock drill auto-lube, alerts, drilling and

target depths, penetration rate, machine

performance, total hours and service. The high

resolution display uses simple icons to aid

navigation and control, and it shows constant

performance monitoring of pressures, rotation

and hole depth. The depth indicator ensures all

holes are drilled to the planned depth to promote


Caterpillar wheel loader applications specialists haverecommended a number of best practices for most

efficient face loading, many of which are common sensebut are still not implemented by many operators



a better floor, reduce secondary blasting and

reduce equipment wear.

“The MD5075C also incorporates technology to

assist in operations and equipment management.

To support the operator, Drill Assist monitors the

main hydraulic systems and automatically

adjusts to pre-programmed parameters. It

incorporates anti-jam, anti-plunge and anti-plug,

which combine to boost productivity and increase

the life of the drill string.”

Cat Track Drills are equipped with the Cat

Monitoring System (Cat MS), which monitors

critical engine functions and will derate the

engine to protect itself from damage if needed.

When critical conditions arise, the Cat MS

monitor displays warning lights and sounds

alarms.

Cat Track Drills also include Product Link™,

which allows remote machine monitoring and

tracking reported via satellite and cellular

networks. The system monitors machine status

and provides utilisation and machine health

trends through reports generated by VisionLink®

software.

“Cat drills are designed for maintainability.

Simple and well-organised electrical/hydraulic

arrangements, logically located components and

ground level service facilitate maintenance. 100%

of all rock drill service can be completed without

removing the drill from the feed. Additionally, the

MD5075C is equipped for technicians to quickly

diagnose system performance using the Cat

Electronic Technician service tool. The MD5075C

also has additional fuel filtration to help ensure

reliable engine operation and extended component

life. The remote-mounted secondary and tertiary

4-micron filters are located for easy access.”

Just launched is the new Cat MD6420C Rotary

Drill which delivers “high production and fast

cycle times thanks to the application-matched

power train and state-of-the-art control system

with advanced diagnostics and automation.” An

upgrade of the MD6420B, the MD6420C offers

three power train choices to deliver the right drill

for the application:

n Cat C32 engine (with 2,000 cfm @ 100 psi

compressor)

n Cat C32 engine (with 1500 cfm @

150/350/500 psi compressor)

n Cat C32 engine (w/2600 cfm @ 100 psi

compressor)

Multiple air compressor packages for hole

flushing enable fast cycle times. Maximum hole

diameter is 311 mm. “A number of new features

make it possible for drill set-ups from hole to

hole to outpace competitive drills. The MD6420C

offers fast tram speed via a proven and durable

undercarriage from the Cat large hydraulic

excavator line. It has a lighter weight mast that

can be raised or lowered in less than 40 seconds,

even with a full pipe rack and full drill string, and

quick and simple mast

pinning uses a two-pin

design versus

competitors’ eight-pin

design, which requires a

cautious sequence of

steps. Also, an

automation suite features

auto-level, auto angle and

auto-drill to rapidly collar

the hole.”

During drilling, the rate

in and out of the hole is

quicker, with the

pulldown and hoist

equally powered for

maximum speed. Angle

drilling capability comes

standard on the

MD6420C.

The MD6420C takes

advantage of advanced

controls, monitoring and

technology to deliver

consistency and high productivity. “The state-of-

the-art Drill Control System features a highly

flexible architecture and versatile communication

protocol that allow it to integrate with many

different technologies. From an operational

standpoint, the system provides a clear, modern,

user-friendly interface; exceptional health and

diagnostic capabilities; and a number of standard

advanced safety and operator assist features.

Communication is configurable for remote and

autonomous commands.”

The MD6420C is autonomy ready and

optionally equipped to leverage the safety and

productivity benefits of Cat MineStar™ Terrain.

“This high-precision drill management system

optimises utilisation and improves drilling and

blasting operation by accurately guiding the

operator and improving precision of hole

placement and drilling depth, reporting drill and

operator productivity and providing feedback on

the variation of bench geology, and allowing

remote, real-time monitoring of drilling activity

and blast planning. These advanced control and

management tools deliver significant benefits

today and serve as the building blocks to

autonomous drilling.”

Cat adds that the MD6420C cuts service time

in half compared to competitive models, thanks

to state-of-the-art, in-cab troubleshooting and

diagnostics as well as a number of design

features that keep maintenance simple. “These

features include a logical layout and unsurpassed

service access, conveniently located hydraulic

pressure test points, closed circuit camera

system, and a stationary rear deck that allows

simple access to the mast area and main deck

during all drilling modes, including angle drilling.”

Structural integrity continues to be the

hallmark of the Cat MD6420 platform because

the durable mainframe and A-frame provide the

strong foundation required for full utilisation of

the pulldown power. The heavy-duty frame is

sculpted, heavily cross-braced and reaches 108

mm deep in the high-load area. It has a tubular,

box-section design that far exceeds the life

expectancy of a slimmer I-beam design. While

other drill manufacturers use a bolt-on system,

Caterpillar integrally welds all critical components

to the mainframe, including the four leveling-jack

casings, the mast pivot and the deck.

The Cat excavator undercarriage has a three-

point oscillating suspension and greased and

lubricated tracks, allowing the MD6420C to

negotiate rugged terrain without transferring

excessive torsional forces to the mainframe. Mast

structures are designed with double-cut lacing in

high stress areas and are built for the life of the

machine.

Alexander Parshkov, the Vice-President of

Russian diamond mining giant ALROSA Group,

and responsible for procurement activities,

recently visited Russia’s leading blasthole drill

manufacturer, RUDGORMASH Company in

February 2016. The main purpose of the visit was

to tour the production facilities of the plant.

ALROSA Company and PJSC MMHC Rudgormash-

Voronezh had previously signed a contract for the

supply of two drilling rigs of model SBSH-

250MNA-32 for diamond mines in Yakutia. One of

the mentioned drilling rigs is a serial model; but



The MD6420C takes advantage of advancedcontrols, monitoring and technology to deliverconsistency and high productivity

the other is of a modified design, equipped with

two separators. The main purpose of Pashkov’s

visit was “an observation of production facilities

of the plant, discussion of particular supply terms

of the drills and aspects of further cooperation.”

Atlas Copco’s ongoing automationjourneyAtlas Copco’s RCS (Rig Control System), first

developed and launched in the 1990s, continues

to deliver generational advancements in mining

by enabling automation. Nine years after the Pit

Viper fleet’s incorporation of RCS, over 600 RCS

powered Pit Vipers have entered production

around the world. Tyler Berens, Product Line

Manager, Automation told IM: “We are seeing our

customers place increased confidence and reliance

on our Pit Viper automation, tackling the safety,

productivity and efficiency strategic and tactical

goals sent our way. A solid and clear advancement

path continues today for the automation program.

Being one of the first stakeholders in this

production process we call mining, we put a lot of

pressure on ourselves to deliver an effective

product. The other stakeholders in the value chain

are counting on us to get it right. The automation

development team works extensively in lab and

field environments to ensure qualitative results

align with quantitative measures to prove the

reliability and speed of new features.” Development

of Remote and Autonomous products are two of the

most recent updates to the automation program.

While controlling Pit Vipers remotely is not

new, the product has received continued updates

to match the opportunities and challenges sent

its way. Whether for safety, productivity or

efficiency needs, teleremote is one solution with

multiple capabilities. Remotely operated Pit

Vipers have been put to use on every continent

except Antarctica. Most recently it was employed

in a North American iron ore mine, where coupled

with operator assist functions, the remote

operators cut the mine’s non-drilling portion of

the cycle time by over 50% and hole accuracy

was 0.4 m closer to planned. This resulted in not

just four additional holes per shift but a much

higher quality product delivering a clear ROI.

The teleremote system allows the operator to

perform any drill function remotely, to include

auto functions (operator assist and autonomous).

The system is scalable for an operator to control

one up to many drills. “The distance between

operator and drill is often a talking point. The

system has run in both Line of Site (LOS)

conditions and connected to a customer’s

network, allowing the remote operator to control

the drill from over 1,300 km away. This

standardised hardware and software platform is

adaptable to the two environments it is employed

in – Mobile and Office.”

The Operations Centre (OC) provides a turnkey

mobile teleremote platform for an operator to

control one to many Pit Vipers, from the 235 up

through the 351. “The OC is perfect for mines

who may not have the WLAN infrastructure in

place to run remotely from the office or have

regular safety constraints in their drilling areas.

Supervising the fleet comfortably in an HVAC

equipped FOPS rated cab, the operator can make

many gains running remotely in this mobile

platform.”

The Office Kit provides a scalable system for

the mine to design or integrate into their control

room, whether that is onsite or offsite. At the

core is a half rack containing all of the hardware

and scalable for utilising multiple operator

stations and controlling multiple Pit Vipers. The

operator station utilises a smaller footprint than

the seat based controls but has all functions in

the same area for ease of transition for the

operator.

An important element with higher levels of

automation is integration into current processes

and recognising where modifications can be

made, ie how will users operate the systems in

their workflows. The Pit Viper Automation

products deliver a software suite to support and

guide the user throughout the planning,

operations and follow up reporting process. This

suite supports existing processes where needed

and has taken additional steps to institute lean

initiatives where able.

Fully autonomous blasthole drilling has been

the subject of many trials around the world, as

well as presented papers showcasing

opportunities at conferences and ROI models for

mining companies. Berens told IM: The talk and

preparation is over, the autonomous Pit Viper is

real and has been running in sustained 24/7

operations over the last few years. Now

producing tangible results, the product is the

result of continuous operational trials where the

autonomous Pit Viper was stacked up against a

rigorous set of KPIs to ensure its productivity,

safety and efficiency. A fleet of three autonomous

Pit Vipers 271s have been operating at an

Australian mine where they are responsible for

the majority of production drilling. More

productive shifts, accurate drilling, and predictable

results are allowing this miner to realise and

report solid sustainable benefits. Building off a

sustainable platform, work is continuing to extend

this product across the Pit Viper fleet, orchestrated

with interested customers.”

Looking ahead Berens concludes: “We see that

automation in the drilling process makes sense

for the mining operation and our vision is to

provide the best and most reliable systems to

make this a reality. We are continuing our high

paced development program to bring to life

innovative products targeting upgraded systems

and new solutions delivering lean effective

results. Some of these are already out in our test

partner’s mine’s working through the demanding

trials you would expect. Look for these exciting

innovative automation products to be showcased

at MINExpo 2016.”

Fifth generation of FLANDERS ARDVARCThe definition of automated drilling varies from

system provider to system provider but

FLANDERS considers it to be defined as the

ability to remove the operator from the cab and

perform the majority of drilling functions – no

Fully autonomous Atlas Copco Pit Viperoperating in an iron ore mine





less than the ability to drill 99.5% of all holes

without human interaction with the machine. The

FLANDERS automated drill system, ARDVARC®,

was developed more than 10 years ago and has

drilled well over a million holes to date. The

recently launched Version 5.0 is the 5th

generation of the software, built from the ground

up. This version includes enhancements of auto

drill functionality and increased real-time drill

operator feedback, reducing downtime as a

result. The advantage of ARDVARC is also that it

is OEM agnostic and so can be installed on a

fleet of drills made up of various OEM machines.

This provides a consistent operator interface

across all makes and models, even older models.

Mixed drill fleets are actually very common in

large mines, as mines change hands and as new

models are trialled and older ones maintained.

Jim Elkins, Global Business Development

Manager, Mining Automation Flanders told IM:

“ARDVARC can be retrofitted on any drill make or

model. It requires a wireless Ethernet network

but can utilise a variety of existing machine

network protocols, or FLANDERS can wire and

sensor a machine if required.” The hardware

includes HMI touch screen, replacement operator

chair with controls (joystick, buttons, etc), PLC,

remote I/O blocks, sensors, and GPS. The

ARDVARC Command Centre communicates via

Ethernet, therefore there is no distance

limitation. The ARDVARC Command Centre can be

installed on a mobile vehicle, or most commonly,

in the mine’s facility.

In terms of integration with wider mine

planning systems, he adds: “ARDVARC, like other

drill data collection systems, has long supported

efforts to measure and correlate ‘actual’ drilled

data verses ‘planned.’ ARDVARC was one of the

first systems in mining to provide high quality

MWD (Measured While Drilling) or down-the-hole

data for both direct and cross systems utilisation.

The open architectural model used in FLANDERS

systems has allowed for direct integration into

the various fleet automation systems, fleet

optimisation systems, blast planning systems,

and fleet machine health systems. As the use of

continuous fragmentation measurement systems

grows, the FLANDERS data, such as Drill Energy

Index, also continues to serve as a foundation for

fragmentation optimisation efforts.”

Elkins said of the market for these systems

that despite the downturn, in the last two years,

it has sold more Fully Autonomous ARDVARC

systems than One-Touch ARDVARC systems.

“This trend has reversed from years prior in that

we are seeing more Fully Autonomous systems

sold than lesser automated options.” The

company confirmed that is has Fully Autonomous

fleets in operation rather than just single

machines. Elkins added that customers have

been seeing payback periods of between one and

three years with the majority of the mines that

have purchased one system going on to buy

multiple systems.

The motivation to switch to full drill

automation is a mix of safety and productivity.

Some locations with dangerous geological

conditions want to remove personnel from the

environment as a way to protect their employees.

Other mine operations are looking for increased

and predictable production.

The installation of a FLANDERS ARDVARC

automatic drilling system on a fleet of drills at

Freeport McMoRan’s Dos Pobres copper

operation near Safford provides GPS navigation

to each hole through the operator, auto-levelling

and auto-drilling from collaring the hole to

finishing the hole and machine monitoring and

fault notification. The system also produces a

quantitative Drill Energy Index value. This value is

determined from an algorithm accounting for

rotary torque and speed as well as hoist down

force and speed which is then averaged over the

amount of time it takes to drill 0.3 m, scaled for

typical drilling conditions and displayed onboard

the drill as well as stored in a database. The main

factors considered in drill pattern design are rock

hardness, water table information, ground

conditions and dominant structural direction.

Once the hardness zones are developed for an

existing bench, they are forecasted down to

predict rock hardness on new benches. This

forecasting allows for patterns to be planned

with the correct burden and spacing for the type

of material expected. Once a pattern is drilled,

the Drill Energy Index numbers for that pattern

can be compared and reconciled with the

forecasted hardness shapes.

For example, if the Drill Energy Index numbers

show that a pattern is softer than the hardness

shapes indicated, air decks and/or lower

explosive energies can be used to assure that the

holes are not overloaded in the softer material.

This guarantees that the correct kilo calories

(joules) are loaded into each hole. These

consistent blasting practices have resulted in

better control and consistency in fragmentation.

This is evident from the crusher performance,

crusher screen data and from shovel camera

image analysis data.

Joy Global P&H drill automation focusThrough existing product updates and new

product development, Joy Global says it is also

focusing on automation for its P&H blasthole drill

line. The company currently offers three different

P&H machines: the 250XPC, which offers up to

90,000 lbs of bit loading; the 285XPC which

offers up to 118,000 lbs; and the 320XPC, which

offers up to 150,000 lbs. These drills’ powerful

rotary carriages “are able to provide ample

torque and bit loading through the toughest rock

conditions.”

To help its drilling customers get even more

out of their machines, Joy Global says it is

working on three add-ons that will bring

increased automation to the line. It is currently

testing a new tele-remote system that offers

single-unit remote control operations, high

precision GPS navigation and validation; and drill

production monitoring. The line of sight remote

operator interface can be controlled up to one

mile away and the high precision GPS provides

less than 10 cm hole location deviation.

The company is also working on auto hole-to-

hole navigation that will allow for obstacle

detection and avoidance, autonomous navigation,

automated rod and bit changing, and automated

propulsion. The new product is designed to detect

and adjust excessive bit air pressure, vibration

and rotary torque, amongst other things.

An additional focus on semi-autonomous drill

function is the provision of multi-drill remote

operation and non-line-of-sight operation. These


Inside a FLANDERS ARDVARC autonomousdrilling command centre

developments are aimed at improving safety by

helping remove people from harm’s way, as well

as increasing machine utilisation.

Matt Collins, Joy Global’s Product Manager for

drills, said the company’s push for increased

automation is to deliver added value for

customers in key areas including safety and

production. “Our automation work will help

customers mitigate operating risks, such as

potentially unstable ground conditions, in addition

to providing repeatable operational consistency

and an opportunity to increase machine utilisation.

We want our drill customers to be able to do more

with less, while protecting their assets.”

Enhanced automation can result in incremental

production footage gains by reducing any

potential overdrilling, for example, and allowing

for more holes drilled per shift through increased

machine utilisation.

Next up for the company’s drill line is a new

machine, designed for the 75,000 lb max bit load

class. This machine will come in diesel and

electric options and maintain the reliability that

P&H is known for, while offering even greater

flexibility in operation.

Brian Fox, Vice President of Product Management

for Joy Global surface mining, said, “With this new

machine and the recent developments in

automation, we aim to offer mining customers

another choice in blasthole drills. We have the

opportunity to leverage our global direct service

network to ensure that our evolving product line

and technology yield the reliable, low-cost

operation that P&H shovels are known for.”

Drill tool developmentsFast and accurate grade control is the key to an

effective mineral extraction process and

ultimately to mining productivity and

profitability. That’s why Atlas Copco Secoroc

says it has opted to extend its RC hammer range

with the COP RC45 – which it claims is “the

smallest, lightest and fastest reverse circulation

hammer ever.”

The 120 mm (4.5 in) COP RC45 reverse

circulation hammer features a revolutionary new

design. “Since it is 40% shorter than the nearest

competitor and more than 30% lighter than most

hammers doing the same job, one man can easily

handle the hammer by himself.” The COP RC45

hammer also works with an extremely high impact

frequency – up to 52 Hz at 30 bar. This is possible

thanks to a unique air chamber design. Much

smaller air chambers build up pressure faster and

make the piston strike at a much faster rate. The

marginally lower impact force is more than

compensated for by the much higher impact

frequency. Tests have shows excellent penetration

rates in all types of rock – also in difficult rock

formations.

Like the RC50, the COP RC45 hammer

features Atlas Copco Secoroc’s unique tube

retention system. This design allows fast and

easy service, and tubes are quickly replaced

without disassembling the hammer. The

company says this means less time servicing

the hammer, and more time producing samples.

Atlas Copco Secoroc says it has all the

technical features to help users reach their

sampling goals but while handling a much

lighter weight. IM


To help its drilling customers get even more outof their machines, Joy Global says it is workingon three add-ons that will bring increasedautomation to the line

Office-based Atlas Copco Pit Viper drillautomation centre



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surface drilling & loading - komatsu mining corp....2016, liebherr has launched its new entry into...

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