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Products, services and solutions from SKF Industrial Market, Regional Sales and Service g issue 99
TECHNOLOGY FOCUS
Hydraulic, pneumatic or electromechanical?
GPAGE 12
Basic asset care GPAGE 18
INDUSTRY FOCUS
Tough solution for metals GPAGE 16
SKF WindCon saves £1m GPAGE 22
www.skf.co.ukwww.skf.ie
FOCUS
Working togetherto meet our customers
‚ needs
Your local SKF Authorized Distributor provides
Technical advice: An SKF Authorized Distributor is qualified to bring you the highest industry
standard of technical advice, both pre- and post-sale, on your application and solution, helping
you make the most efficient and cost-effective specification from the outset.
Traceability: There has been a marked increase in the proliferation of counterfeit bearings and
other engineering products in the marketplace. By dealing with an SKF Authorized Distributor
you can ensure that when you ask for SKF bearings, you receive genuine SKF bearings.
Availability: An SKF Authorized Distributor can supply 97% of your off-the-shelf requirements
direct from stock within 24 hours. SKF delivers daily, five days a week, all year round.
A full product range: An SKF Authorized Distributor gives you swift access to tens of thousands
of SKF products, including over 24,000 bearings, 1,250 seals, 10,000 linear motion components,
22,000 power transmission products and 2,000 maintenance products.
United Kingdom
n Acorn Industrial Services 01709 789999 www.acorn-ind.co.uk n Antifriction Components 0117 955 6678 www.afc-uk.comn Brammer0870 240 2100 www.brammer.co.ukn BRT Bearings 01945 464097 www.brt-bearings.co.uk n ERIKS 0121 508 6000 www.eriks.co.uk n Sprint Engineering and Lubricants 01474 534251 www.sprint-uk.com
Republic of Ireland
n Brammer01 830 5455 www.brammer.ie n Dickson Bearings and Transmissions 01 844 3000 www.dicksonbearings.ie n E. Fox (Engineers) 01 469 3500 www.efox.ie n ERIKS 01 856 8540 www.eriks.ie
SKF (U.K.) Limited01582 490049www.skf.co.uk
Authorized
Distributor
FEATURES
PUBLISHER: SKF (U.K.) LIMITED EDITOR: PHIL BURGE EDITORIAL: 4 CREATIVE MARKETINGDESIGN: TRISHA PATEL
Dear Reader,
It is with great pleasure that we send you
this year’s first edition of FOCUS, SKF’s maga-
zine for the industrial market across the UK
and Ireland.
2013 was a challenging year for many busi-
nesses and although the business climate is
finally starting to look more positive, we can
expect 2014 to be similar. With companies
looking to improve efficiency and return on
investment, it has never been a better time to
look at maximising the potential of both your
workforce and machinery.
In this issue of FOCUS we will be looking at
the importance of skills training and its usefulness
in minimising costs and optimising production,
exploring the concept of condition-based main-
tenance and we will be looking at electrome-
chanical motion control systems compared with
hydraulic and pneumatic solutions.
You will also find examples from businesses
in various industries of how they get the most
out of their assets, human and mechanical,
while reducing long-term costs.
Last but not least, I would like to draw your
attention to Asset Management 2014, a unique
event in Prague, Czech Republic, where industry
experts will be sharing the latest developments
in asset optimisation. This isn’t just a confer-
ence, but a six month process in which SKF
will help you look at your asset utilisation with
fresh eyes, identify opportunities for improve-
ment, and build a roadmap with strong actions,
all helped by the same industry experts and to
European industry benchmarks. An opportunity
not to be missed! Enjoy this issue of FOCUS!
In this issue
REGULARS
08 Customer focusSKF Explorer bearings halve consumption for ArcelorMittal Mining
09 Machine tool focusThe latest spindle condition monitoring tools
12 Technology focusHydraulic, pneumatic or electromechanical?
16 Metals focusExtreme temperature bearing solution
18 Asset careMoving from preventative maintenance to condition-based maintenance
22 Customer focusSKF WindCon saves £1 million for global wind farm operator
® SKF is a registered trademark of the SKF Group.
TM BeyondZero is a trademark of the SKF Group.
© Copyright SKF 2014The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein.
Certain image(s) used under the license from Shutterstock.com
HOW TO CONTACT UST: 01582 490049 F: 01582 848091 [email protected] WWW.SKF.CO.UK SKF (U.K.) LIMITED SUNDON PARK ROAD, LUTON LU3 3BL
TECHNICAL HELPDESKT: 01582 496534 [email protected]
14 Energy efficient bearings
22 SKF WindCon saves £1m
07 New training catalogue
16 Tough solutions for metals
04 NewsThe latest local and international news
07 Training focusNew course programme and training catalogue available for 2014
10 New market offersPlain bearings, linear ball bearings and thermal cameras
20 Problem-solving productsNew and upgraded application-specific solutions
23 LiteratureThe latest brochures and catalogues
24 Reader reply service
25 Spot-the-difference
Printed in England on FSC paper stock.
OLAF DE BAKKER
Business Unit Manager
SKF Industrial Market,
Regional Sales and Service
FOCUS 99 f Spring 2014 3
G Apprentice training supported at Tata Steel
G SKF acquires US-based Kaydon Corporation
G SPP Pumps accredited
G Antifriction and SKF strengthen partnership
News
NEWS HIGHLIGHTS
4 Spring 2014 g FOCUS 99
SKF has announced a strategic partnership with SPP Pumps
that will see all five SPP UK Service Centres given official
accreditation as an SKF Certified Pump Rebuilder. The move
underlines SKFs commitment to providing the best pumping
solutions to customers through a close working relationship
with service centres.
“There is real synergy between us and SKF,” said John
Morgan, Service Centre Aftermarket Business Development
Manager for SPP. “We both operate on a global scale, we’re
both committed to providing proven quality products and solu-
tions, and we both want to maximize opportunities that will
better our businesses as well as our customer support.”
SPP Pumps has had all five UK centres accredited, with SPP
Engineering Services in Hyde being the first. It was followed by
Coleford, Northern Ireland, Eastleigh and Glasgow. An SKF em-
ployee will also be appointed to work directly with SPP Pumps.
“Through our conversations with SPP Pumps and seeing
their facilities first hand, we have full confidence that this
partnership will prove fruitful for both parties,” said John
Mason, Area Sales Manager Aftermarket North and programme
manager for SKF.
www.spppumps.com
SPP Pumps accredited as SKF Certified Pump Rebuilder
Michael Crean, SKF Area Director Europe West congratulating Alok Kirloskar,
Managing Director, SPP Pumps UK on the appointment
In conjunction with on-site contractor Bram-
mer, an SKF Authorized Distributor, SKF
recently supplied a bearing mounting star and
associated tools to the Engineering Competen-
cy department at Tata Steel’s Port Talbot site
in Wales, to help apprentices learn the correct
procedures for mounting and dismounting
rolling bearings.
The Engineering Competency department,
in conjunction with Apprentice Training, support
over 150 apprentices and some 800 craftsmen
at their on-site Academy.
Dave Williams, Engineering Competence
Development Manager, Tata Steel, commented,
“There was a need for bearing training equip-
ment and the Academy needed money spent
on it, so we spoke to Brammer and SKF to
see if they could help us out.”
Williams continued, “Thanks to their generous
sponsorship of our apprentice training pro-
gramme, we have been able to bring in equip-
ment that will benefit thousands of employees
in the years to come. This equipment will
assist in the setting of standards and will allow
us to systematically improve the competence
of our craftsmen and trainees.”
www.tatasteeleurope.com
www.brammer.co.uk
Training supported at Tata Steel
Asset Management 2014 is a European con-
ference filled with inspiring presentations and
challenging discussions around Asset Manage-
ment with a focus on productivity, competi-
tiveness and knowledge within industry
sectors such as mining, cement, steel, pulp
and paper, marine and food & beverage.
The conference will play a key part in SKF
UK’s offer to deliver a tailored asset manage-
ment road map to companies attending the
conference. After registering for the conference,
delegates will be given six months complimen-
tary access to Aptitude Exchange, SKF’s online
knowledge and training portal and an SKF
asset management specialist will then arrange
an assessment at the delegate’s place of work.
The outcome of the assessment will reveal
the current status of the delegate’s asset
management practices and will be presented
in a spider chart which graphically describes
the opportunities that exist for improvement.
During the conference you will hear real-
world examples of how asset management is
approached by respected industry leaders and
you will be able to discuss your priorities with
SKF’s asset management experts.
After the conference, SKF will work with you
to develop your own road map to asset efficiency
optimisation based on the facilitated assess-
ment and your discussions at the conference.
www.assetmanagement2014.com
For further information, please contact
Thomas Jones: 01582 496479 or e-mail:
Asset Management conference16 to 18 June 2014, InterContinental Hotel, Prague, Czech Republic
FOCUS 99 f Spring 2014 5
DATES FOR YOUR DIARY
If you are looking for dedicated engineering solutions
that add real value to your business then come and
talk to our specialists at one of this year’s trade
exhibitions. Please come and visit our stand at the
following events:
MACH exhibition
7 to 11 April 2014
Stand 4122, Hall 4, NEC Birmingham
MACH attracts 21,500 visitors and provides a plat-
form for around 480 exhibitors to showcase their
engineering-based manufacturing technologies.
www.machexhibition.com
Drives and Controls exhibition
8 to 10 April 2014
Stand F100, Hall 3A, NEC Birmingham
The UK’s leading event for drives, automation,
power transmission and motion control, it show-
cases the latest solutions from over 300 world-
class companies.
www.drives-expo.com
Asset Management conference
16 to 18 June 2014
InterContinental Hotel, Prague, Czech Republic
A European conference filled with inspiring
presentations and challenging discussions around
Asset Management with a focus on productivity,
competitiveness and knowledge.
www.assetmanagement2014.com
Hillhead exhibition
24 to 26 June 2014
Stand F2, outdoor plot, Hillhead Quarry, Buxton
The international show for quarrying, recycling and
heavy construction has static displays and physical
demonstrations from 460 exhibitors, attracting some
17,000 visitors.
www.hillhead.com
TOC Europe exhibition and conference
24 to 26 June 2014
Stand K52, ExCel London
The exhibition is a showcase for port and terminal
technology and operations, and the conference
focuses on collaboration within the container
supply chain.
www.tocevents-europe.com
Farnborough International Airshow
14 to 18 July 2014
Stand D14a, Hall 1, Farnborough, Hampshire
The largest global event of its kind aimed at the
aerospace, defence, space and security sectors.
www.farnborough.com
SKF Traditional Energy,
Aberdeen, a centre of excel-
lence within SKF Reliability
Systems that specialises
in the offshore oil and gas
industry, has been awarded
a highly coveted accreditation
as a DNV (Det Norske Veritas)
Approved Service Supplier.
The accreditation, which few companies have so far
received, underlines SKF’s exceptional capability to
improve reliability and introduce cost savings for its
offshore customers.
The achievement is significant due to DNV’s rank-
ing as the world’s largest ship and offshore classifica-
tion society, in addition to its position as one of
the top three certification bodies in the world. The
accreditation follows a number of comprehensive
quality system assessments and audits of SKF
Traditional Energy, supervised by DNV.
Achieving the accreditation from DNV is a key
aspect of SKF’s long term commitment to developing
effective life cycle management in order to reduce
the total cost of ownership and ultimately, increase
profitability for its customers.
www.dnv.co.uk
www.skf.co.uk/aberdeen
SKF accredited as offshore supplier
The Sealing Solutions branch of SKF in Bristol has
moved into Antifriction Component’s new head office,
strengthening the existing partnership and enhancing
service for customers, who will now be able to access
specialised sealing solutions through SKF and one of
its SKF Authorized Distributors
on the same site. SKF relocated from its own local
base, bringing together two companies that will
act independently but provide a powerful combined
expertise under one roof for a loyal and expanding
customer base.
SKF recently organized and hosted a Technology Day
at the SKF Solution Factory in Luton based around
the theme of asset efficiency and reliability.
The AEMT (Association of Electrical and Mechanical
Trades) was founded in 1945 and is an international
association representing leading companies in the
service and repair industry.
Over 20 members from the association received
presentations on energy efficiency products such
as E2 bearings, SKF WAVE seals and asset reliability
solutions.
www.aemt.co.uk
Technology Day hosted for AEMT
Andrew Fleming, who oversees Antifriction’s UK
Operations, commented, “It’s fantastic to have SKF
manufacturing specialist seals on our main site. This
enables us to further enhance our customer service
and underpins our philosophy of being the best spe-
cialist distributor of bearings and associated critical
moving parts in the UK.”
SKF is the global market and technology leader
in high quality custom engineered sealing solutions,
offering a comprehensive range of machined seals
for many industries to fit customers’ requirements.
Among the services available at the new site will be
a vast stock of raw materials plus an SKF SEAL JET
machine, which can produce seals up to 400 mm
in diameter as one piece in low and high quantities.
Olaf de Bakker, Business Unit Manager for SKF
UK and Ireland, said, “We are celebrating 10 years of
working with Antifriction, so this move is a good way
to mark the achievement. We hope that this will also
give us better penetration into Antifriction’s home
markets of the South West and South Wales.”
www.afc-uk.com
www.skf.co.uk/machined
Antifriction Components and SKF strengthen partnership
AEMT members being shown the correct methods for mounting
and dismounting rolling bearings
NEWS
6 Spring 2014 g FOCUS 99
SKF and Kaydon Corporation have agreed that SKF
will acquire Kaydon in an all-cash transaction valued
at approximately $1.25 billion.
Kaydon has a global footprint with 62% of its sales
generated in North America, 24% in Europe, 12%
in Asia Pacific and 2% the Rest of the World.
Tom Johnstone, SKF President and CEO, explains,
“We have followed the development of Kaydon for
a long time. They have a strong product portfolio,
strong management and a solid financial perfor-
mance, and I am delighted they are now part of
the SKF Group. The complementary nature of their
products and technologies, their geographical and
customer presence, and their manufacturing footprint
will enable us to even better serve our customers
and distributors in the industrial market worldwide.”
Summary of Kaydon Corporation
Kaydon Corporation is a leading designer and manu-
facturer of bearings and velocity control products
such as industrial shock absorbers, gas springs and
vibration isolation products. Their specialty products
include filters and filtrations systems, custom rings
and seals as well as environmental services.
These products are used by customers in a variety
of industries such as aerospace, defence, medical,
semiconductors, wind energy, material handling
and machine tool.
g Kaydon has 19 manufacturing sites around the
world, 13 in USA, 2 in Germany, 2 in China,
1 in Mexico and 1 in the UK
g Kaydon is a leader in its product categories, such
as split bearings and thin section bearings, with
highly engineered, performance-critical products
g Kaydon’s industry recognized brands and leading
technologies serve high value, global market
segments
g Kaydon’s product offering is highly complementary
with SKF’s product portfolio and will enhance
SKF’s offering to its customers worldwide
g Kaydon serves a number of segments that are
less represented in SKF’s current customer base
and provide an opportunity to expand its product
offering to those customers
Poul Jeppesen, President and CEO SKF USA Inc.,
commented on the acquisition, “Tom Johnstone has
asked me to lead Kaydon; and I’m very much looking
forward to getting to know the Kaydon companies,
the people and the values that have driven their suc-
cess. I have been very impressed by what they have
done this far and I‘m positive that by combining the
strength of both companies, we can achieve even
higher levels of performance”.
In order to ensure the best incorporation of Kaydon
into the SKF Group it will be kept as an independent
unit reporting directly to Poul Jeppesen in his role as
a member of Group Management. Poul will continue
in his role as head of SKF USA Inc.
Kaydon in the UK
The Kaydon Corporation has a factory in King’s Lynn,
Norfolk, which manufacturers the world-renowned
Cooper split bearings.
Cooper split bearings combine the two crucial
elements of running cost effective machinery:
flexibility and reliability. Flexibility because the split
design allows access without the need to dismantle
components related to the bearing. Reliability because
they are able to function in what might otherwise
be thought of as ‘problem’ locations.
Cooper was established by Thomas Cooper,
a prolific inventor and brilliant engineer in 1894.
After Thomas Cooper’s death and throughout the
second half of the 20th Century the company focused
on the ground-breaking split bearing he designed
back in 1907. In 1991 the Kaydon Corporation
became Cooper’s parent company.
Throughout the UK and Ireland Kaydon Corporation
have a number of distributors, including: Brammer,
Hayley, John Handley Bearings, Howcroft Industrial
Supplies, Scots Bearings, E.Fox (Engineers), (Cooper
split bearings); R A Rodriguez (Kaydon thin section
and slewing ring bearings); Alijac Fueling Components
(Kaydon filtration systems); Nash Mechanical Seal
Services (Kaydon piston rings and industrial seals);
Ace Controls International (Ace industrial gas springs
and hydraulic dampers).
www.kaydon.com
www.cooperbearings.com
SKF acquires Kaydon Corporation
To earn the prestigious accreditation SKF Certified
Rebuilder Electric Motors, Wainwright & Gibson had
to meet exacting standards and specifications. The
benefit of certification is that technicians complete
extensive training in electric motor analysis, bear-
ing installation, lubrication systems, and condition
monitoring technologies - giving them the skills and
experience needed to optimise diagnoses and repairs.
Covering the North West of England, Wainwright
& Gibson has been established since 1962, providing
a long list of clients with electrical and mechanical
engineering solutions. The Company operates from
two sites, employing 32 people and houses some of
the largest electromechanical capacity in the region.
Wainwright & Gibson join an elite group of five
rewinders, all of whom offer the same exacting
standards: WGM Engineering, Scotland; Team
Rewinds, North East; Fletcher Moorland, Midlands;
Mid-Kent Electrical Engineering, South East, Anstee
& Ware, South West.
www.wainwrightandgibson.com
New SKF Certified Rebuilder appointed
ArcelorMittal Bremen GmbH has chosen SKF to
customise and supply 30 electromechanical actuators
for use in the continuous casting of steel. The order
is one of the biggest for a mechatronics solution that
SKF Germany has ever received from a customer in
the metals industry.
Carsten Albers, Project Manager, ArcelorMittal
Bremen, commented, “We needed to have a very
compact solution that would enable us to be very
accurate and reliable in adjusting the width of our
output steel. We chose to work with SKF on this
project because the company has strong technical
knowledge and understands our business and the
application.” www.arcelormittal.com
ArcelorMittal orders SKF actuators
Olaf de Bakker, SKF, flanked by Scott Windsor and Graham
Bellis, Wainwright & Gibson
FOCUS 99 f Spring 2014 7
d 2014 sees the launch of a new training cata-
logue, offering industry and application specific
training to offer an understanding of the current
trends in modern maintenance philosophies, and
how precision and proactive approaches, and their
direct interaction with machinery fit into an overall
reliability programme.
You will notice a wider choice of online and other
learning methods, all aimed at enabling our clients
to build and experience their own self-paced learning
environments. After analysing customer feedback
we are tailoring our training offer in-line with your
needs, using the tools and technology you want and
developing your personnel to the competency level
you require. Naturally, that also means at the time,
place and pace that suits you.
Besides our exsisting training centres in Luton and
Aberdeen, we will be opening a new office in Leeds,
we can also offer onsite training at your own facility.
The importance of skills trainingIt is no secret that recent years have brought chal-
lenging times for maintenance organisations. Compa-
nies have turned to downsizing, re-engineering, plus
a host of other methods to increase profit and remain
competitive in the new world market. It is time
we realise that the potential payoff to be gained by
optimising production and minimising costs through
a well-trained, creative thinking, enthusiastic work-
force is far greater than size reductions.
Why reliability maintenance training?By combining our technical knowledge and close
working partnership with our clients, SKF has devel-
oped a training platform for your employees, that is
able to reflect industry best practice and ensure that
operational staff are equipped with the latest knowl-
edge on machine reliability. We incorporate a variety
of training methods into our classes to ensure the
participant is engaged with the topic, as it increases
overall learning effectiveness.
It is our belief that this year’s Training Handbook
will offer genuine help to develop a successful knowl-
edge base for your staff and meet the demands of
today’s market. Below are some training examples.
Course levelsThe SKF Training courses focus on disseminating
maintenance-related knowledge worldwide. It offers
various programmes that are developed for easy
application and the courses are delivered at three
skill levels. Following this development path is not
mandatory, yet highly recommended, as participants
will realise the most benefits by taking the courses
sequentially.
IntroductoryE-learning modules delivered online, at the SKF
Knowledge Centre. Introductory courses familiarise
students with basic terms and offer training on sub-
jects such as bearings, lubrication, thermography, and
more. SKF Self-Learning Tools are a one-stop solu-
tion for learners at various levels including the stu-
dents of mechanical and other engineering streams.
They offer impartial assessment, and help you to
update your competencies to acquire new skills.
IntermediateClassroom courses are taught by SKF specialists
at customer locations or SKF facilities nationwide.
A combination of theory and hands-on instruction
these intermediate courses typically last 1–2 days.
AdvancedClassroom courses are taught by SKF specialists or
external experts at customer locations or SKF facili-
ties nationwide. Combining theory with hands-on
instruction, these advanced courses typically last
3–5 days.
Featured courses
An introduction to modern maintenance philosophiesThe objective of this course is to give students an
understanding of the six failure curves and how
they have shaped modern maintenance practices,
including Reliability Centred Maintenance (RCM) and
Failure Modes and Effect Analysis (FMEA). They will
understand asset criticality and how this is used to
influence maintenance decisions. The course will also
explore condition-based maintenance and the range
of techniques this approach utilises.
Asset reliability improvementThis course relates to methods, technologies and best
practices used to develop, implement and sustain
your optimized maintenance scheme and guides you
to benefit from the living programme for continuous
improvement. The course explores the justification for
your maintenance plan; examines various approaches
and helps you to optimize your current maintenance
policy or transition to a more appropriate strategy.
Benefits of implementing the correct maintenance
strategy include improved asset reliability, increased
uptime and moving your organization from a reactive
culture to a reliability-focused culture.
www.skf.co.uk/training
New training catalogue for 2014
SKF’s knowledge, experience and recently upgraded
SKF Explorer self-aligning roller bearing assortment
were put to the test when ArcelorMittal Mining, one of
Canada’s leading suppliers of iron ore to steel markets
around the world, asked for assistance. ArcelorMittal
was experiencing lengthy repair delays on the roller
screen that helps the company achieve full production
capacity at its iron ore pellet plant in Quebec and a
solution was urgently required. These delays resulted
from the frequent replacement of bearings and were
causing the company to miss vital production targets,
as well as putting a strain on resources.
The harsh conditions and tough lubricants required
were resulting in rapid surface contamination of bear-
ings within the roller screen, which sorts pellets to the
correct size before they are hardened in the furnace.
When fully functioning, this vital component in the Ar-
celorMittal mining process helps the company achieve
its capacity of processing 9 million pellets annually
and plays a key role in the quality of product delivered.
However, any failure causes serious interruptions to
production and necessitates costly downtime.
The solution to the problem came in the form of
SKF Explorer self-aligning roller bearings. Recently
upgraded to offer the best abrasion resistance
characteristics on the market, SKF extended MTBF
(mean time before failure) for ArcelorMittal from 6 to
at least 12 months and also reduced the associated
maintenance costs, bringing the overall annual saving
to $20,000.
Combining the clean and homogenous high-quality
steel used in the original SKF Explorer bearings with
an improved heat treatment process, upgraded SKF
Explorer bearings provide longer service life, particu-
larly under difficult operating conditions. When SKF
materials experts developed the upgraded bearing
steel, they tested it against the best – original SKF
Explorer bearing steel. During these demanding tests,
researchers were not interested in knowing how much
better the upgraded SKF Explorer bearings would
perform compared to the competition. They wanted to
know how much better they would perform against an
already proven leader in the market.
When compared to original SKF Explorer bearings,
the upgraded bearings have a superior balance
between hardness and toughness. This advance-
ment gives SKF Explorer self-aligning roller bearings
a higher degree of wear resistance, enabling longer
service life, especially in applications affected by high
contamination or poor lubrication conditions, such as
those found within the mining and quarrying industry.
The SKF Explorer performance class has been
certified by Det Norske Veritas and Germanischer
Lloyd to last longer than standard bearings.
SKF’s knowledge and experience as both a
consultant and a supplier has proved its worth time
and time again in mining and beyond. “I appreciate
the proactive work performed by SKF in identifying
areas of improvement,” commented Martin Fournier
of ArcelorMittal. “Through discussion and analysis,
SKF has been able to turn my issues into real-life
applicable solutions that have saved us valuable time
and resources”.
8 Spring 2014 g FOCUS 99
CUSTOMER FOCUS GARCELORMITTAL
SKF Explorer bearings halve consumption for ArcelorMittal“THROUGH DISCUSSION AND ANALYSIS, SKF HAS BEEN ABLE TO TURN MY ISSUES INTO REAL-LIFE APPLICABLE SOLUTIONS THAT HAVE SAVED US VALUABLE TIME AND RESOURCES,”MARTIN FOURNIER, ARCELORMITTAL
FOCUS 99 f Spring 2014 9
Spindles are such a familiar tool in the manufactur-
ing industry that they are often largely forgotten until
they go wrong. It is true that, with little more than
basic lubrication, machine tool spindles can continue
to function day after day, and provide excellent service
for long periods of time. However, such a minimal
level of attention does not guard against the conse-
quences that arise when, for example, spindle com-
ponents are damaged through incorrect use, such as
errors during tool changes, or the ingress of particles
or coolant, which can result in damage to bearings,
taper run-out /wear, clamping malfunction, imbal-
ance and alignment errors. Also, while a basic level of
lubrication will keep the machinery moving, a more
accurate and considered approach to the application
of lubricant may prevent excessive wear from occur-
ring to rotating parts and thus extend life significantly.
However, by looking at the causes of spindle wear and
failure, operators can maximise uptime and reliability,
and potentially extend operating life still further by
capitalising on some of the assessment and monitor-
ing tools that are now available.
SKF Spindle Assessment KitOne way to improve machine tool output and reduce
downtime is to use the SKF Spindle Assessment Kit,
a new solution for condition monitoring and quality
control. The kit is easy to set up and operate, enabling
engineers to identify problems early by swiftly meas-
uring and interpreting key spindle operating data.
A constant challenge for engineers and operators is
the fact that a number of variables can affect machine
tool performance, including running accuracy,
vibration, thermal behaviour and also rigidity.
However, the SKF Spindle Assessment Kit brings
convenience to the assessment of machine tool
performance with eight different condition tests, the
results of which provide users with a comprehensive
understanding of why their spindle might be working
incorrectly or inefficiently. The kit also allows users
to recalibrate a spindle with outstanding accuracy
and that, in turn, helps extend machine tool life and
improve cutting quality.
The SKF Spindle Assessment Kit comprises an SKF
Microlog Advisor Pro handheld unit, an acceleration
sensor, laser tachometer, dial gauge with stand, belt
tension gauge and software package. With a high-
resolution LCD display that colour codes data into
intuitive green-yellow-red results, the kit is an
extremely user-friendly tool that offers over eight
hours of continuous operation time as standard.
Designed within a high-impact case that provides an
IP65 dust and splash rating, the kit is also a robust
solution suitable for a range of operating conditions.
SKF Machine Tool Observer MTxAnother new tool that will help improve machine tool
output and reduce downtime is the SKF Machine Tool
Observer MTx, an online surveillance, monitoring and
observer system for simple data logging that monitors
and records the history and maximum events of ma-
chine tool spindles. The SKF Machine Tool Observer
MTx consists of standalone electronics with micro
controller unit, flash memory, real time clock and
sensor interface. Using a low cost 3D accelerometer,
this is a cost-effective option for engineers, while the
server/client software package for parameterisation,
sensor online monitoring and data download makes
this a flexible tool that can be integrated with existing
systems.
www.skf.co.uk/spindlerepair
Servicing machine tool spindles
10 Spring 2014 g FOCUS 99
SKF Extended Life Plain Bearings d Reducing CO2 emissions and total cost of owner-
ship are key drivers across industry, especially in
tough environments. To help users achieve these
goals, SKF has launched a new range of SKF
Extended Life Plain Bearings. These bearings –
aimed primarily at applications in the farm, forestry
and construction sectors - are virtually maintenance-
free, which means that they do not need to be
re-lubricated.
Steel spherical plain bearings typically require
re-lubrication as part of a regularly scheduled
maintenance programme. Re-lubrication extends
bearing service life but also adds cost. Whether it is
the cost of labour, downtime, the cost of new grease
or the cost to dispose of used grease, these costs add
up over time.
SKF Extended Life Plain Bearings help reduce the
cost of ownership and minimise environmental impact
because they last longer and do not require re-lubri-
cation. For example, on a single bearing with a
100 mm bore it is possible to save up to 876g of
grease per year. That means the operator of a tractor
with six bearings of this type and size can save up
to 5.2kg of grease per year. This translates into
a savings of 7.7 kg of CO2e per year. And because
SKF Extended Life Plain Bearings do not require
re-lubrication they automatically offer built in protec-
tion against bearing failures due to missed re-lubrica-
tion intervals.
SKF Extended Life Plain Bearings are phosphated
and then undergo further treatment to improve wear
resistance that practically eliminate the risk of corro-
sion. Afterwards, non-toxic grease is introduced into
the bearing. When sealed, this tribological system
is so robust that re-lubrication is not necessary.
Because no additional grease is consumed, and no
grease is purged from the bearing, environmental
impact is significantly reduced.
The heavy-duty triple lip seals incorporated
within SKF Extended Life Plain Bearings are the
key to reducing total cost of ownership. These seals,
designed for long service life in highly contaminated
environments, virtually eliminate the ingress of con-
taminants and the resulting poor lubrication condition
that causes premature bearing failure. SKF LS triple
lip seals are the standard sealing solution for all SKF
Extended Life Plain Bearings.
SKF Extended Life Plain Bearings are designed to
accommodate the same high loads and misalignment
as a standard steel bearing. The seals and grease can
accommodate temperatures ranging from –45 to
+110 °C (–49 to +230 °F).
In addition to the cost savings that result from
reduced grease consumption, downtime and main-
tenance, sealed SKF Extended Life Plain Bearings
can further reduce costs by enabling external sealing
solutions to be simplified or eliminated completely.
d Thermal imaging is a well-known and widely
established technique used to monitor the condition
of mechanical and electrical machinery and build-
ings. Virtually every mechanical or electrical process
or building exhibits changes in thermal energy levels.
A thermal camera can detect these energy changes
by measuring the invisible infrared radiation and
displaying as a visual picture. The thermal camera
can identify hot spots and cold spots that can then
be used to help make decisions with regard to the
maintenance of machinery or buildings.
SKF has recently launched two new thermal cameras,
the TKTI 21 and TKTI 31, that offer a cost-effective
means of improving the efficiency and safety of
maintenance.
The SKF TKTI 21 and TKTI 31 thermal cameras
can be used in multiple applications to spot the unu-
sual heat patterns that indicate machine problems,
enabling prompt preventative maintenance to reduce
production losses due to unplanned downtime.
By helping to increase plant availability and reliability
SKF thermal cameras will realise a high return on
investment when used as a part of a proactive main-
tenance programme.
The TKTI 31, which replaces the TKTI 30, has been
upgraded with a thermal detector that has 40% more
pixels. With a 380x280 pixel detector, the TKTI 31
has a lower cost than most other brands that offer
a standard 320x240 detector. Meanwhile, the new
TK21 is 40% cheaper than its predecessor, the TKTI
20, and is one of the best priced thermal cameras
with 160x120 resolution on the market.
SKF thermal cameras meet the needs of condition
monitoring engineers by offering a convenient means
of inspecting running equipment under full load, thus
minimising production interference. The cameras also
help engineers avoid the safety issues of inspecting
hard-to-access live equipment, making them ideal for
live electrical applications where potential hot spots
often cannot be approached due to danger of electro-
cution. With SKF thermal cameras, engineers
can inspect plant under varying running conditions
to determine the potential causes of intermittent
faults, reduce the time necessary for planned shut-
downs, minimise maintenance and repair costs and
increase equipment lifespan and mean time between
failures (MTBF). www.skf.co.uk/tkti
FOCUS 99 f Spring 2014 11
PRODUCT FOCUS GNEW MARKET OFFERS
d The demands placed on modern linear guidance
technology have risen significantly in recent years –
especially in terms of load carrying capacity, rigidity
and life expectancy. At the same time, users expect
installation and maintenance outlay to be as low
as possible.
To meet this need, SKF has coupled its practical
application experience from industry with the latest
findings from our own research and development and
this combined expertise has been poured into the new
linear ball bearing range. The result is an SKF innova-
tion that opens up new performance dimensions in
the ISO-3 class of linear ball bearings.
LBC, D-series is the brand new range of SKF linear
ball bearings, improving on our current SKF range of
linear ball bearings. LBC, D-series linear ball bearings
consist of a cage and raceway segments to support
ball sets and seals. The raceways, with exceptionally
broad track and precision machined profiles, can
accommodate heavier loads than existing versions.
The bearings are available for shaft diameters
12 to 40 mm, with the choice of sealed or non-sealed
variants and the sealed variant incorporating double-
lip seals. Bearings with stainless steel balls and
raceways are also available for harsh environments.
They can be used in combination with SKF chrome-
plated or stainless steel shafts for a corrosion resistant
guidance system. If required, a self-aligning version
of the LBC, D-series is available.
The LBC, D-series bearing accommodates tilting
of the whole bearing through an angle up to ±30
minutes of arc. The tilting feature compensates for
misalignment that may be caused by significant bend-
ing of an unsupported shaft or due to manufacturing
and fitting tolerances. The cage and seals have been
optimized to accommodate the self-aligning capability
so that the bearing and especially the shields or seals
remain concentric with the shaft.
This new design is the result of further develop-
ment of the LBC bearing that has been proving its
worth in the market very successfully for many years
now. The D series remains interchangeable with its
predecessor the LBC and with all relevant competitor
products, so components can be exchanged quickly
and easily. The new bearings can, with great benefits,
be included in automation machinery, pick and place
machines, and filling machines as well as in screen
doors for trains or industrial safety doors. Further-
more, the bearing can be used in other markets as
well, for example within medical equipment or food
manufacturing where mechatronics is used.
Just like bearings from the previous generation,
the new linear ball bearing allows accelerations of
up to 100 m/s2 and can achieve linear speeds of up
to 5 m/s. Both values ensure fast production cycles
and thus high output. The D-series comes with the
usual level of flexibility that users are accustomed to,
and that goes for environmental conditions as well:
Reliable operation is maintained at temperatures
ranging between -20 and +80 degrees Celsius. As
a result, the bearing is suitable for a wide spectrum
of applications even under difficult conditions.
SKF linear ball bearings and units, LBC, D-series
New SKF Thermal cameras, TKTI series
d Now that not only pneumatics and hydraulics but
also electromechanical solutions are jockeying for
position when it comes to motion control, how do
we evaluate the best method for each application?
In recent years, linear drive technology has con-
siderably advanced the trend towards automation
of industrial procedures. While linear actuators
were primary pneumatically or hydraulically driven,
there has been an evident technological shift in the
production industries in favour of electromechanical
systems. The change is the result of both technical
and financial factors, including easier initial set-up,
lack of ancillary equipment, lower maintenance and
repair costs throughout the system lifetime, versatility
and environmental considerations.
Electromechanical systems offer accurate motion
control, including immediate setting of speed, force
and position; increasing the flexibility and repeatabil-
ity of production processes. In addition, they reduce
the total cost of ownership, thanks to energy saving,
reduced maintenance and greater reliability. Fast
cycles increase productivity and reduce unit manufac-
turing costs. Electromechanical systems also minimise
environmental impact and increase the safety
of production processes through reduced energy
consumption, cleaner operating procedures and
reduced noise levels.
Electromechanical versus pneumatic systemsPneumatic cylinders are widely used in low-precision
and high-speed applications but electric drive systems
are increasingly being considered as a replacement
alternative to air systems. This is because they
require less ancillary equipment, reduce energy
costs thanks to greater efficiency, need less
maintenance and reduce the risk of con-
tamination. Electric cylinders also offer
greater control of the motion and speed
profile, giving better repeatability, more
precise positioning and increased up-time.
SKF electric cylinders are designed to fit
the industrial footprint of existing parts, so con-
version is easy and cost-effective. Also, the actuators
can be monitored and controlled by custom software.
Applications include factory automation, metalworking
and machinery options, and other utilization where
reliable and precise repetitive motion is required.
Electromechanical versus hydraulic systemsHydraulic cylinders are traditionally used in high load
applications. In the recent past, the power range
of servo motors has been extended and makes it
possible to develop electromechanical solutions for
high load applications. Indeed, SKF electromechanical
cylinders can provide a force up to 450 kN, opening
up more applications to switch from hydraulic to
electromechanical solutions.
Electromechanical cylinders are more reliable,
easier to control and cleaner to operate than hydraulic
cylinders. They eliminate typical production problems
such as contamination, oil leaks, fluid maintenance
checks and disposal procedures, and require no
ancillary equipment. They are suitable for a complete
range of electronic control systems.
SummaryWhile electromechanical technology is indeed quieter,
more efficient and less expensive to operate and
maintain, it is foolish to write off its alternatives, each
of which has its own strengths. Furthermore, hydrau-
lic systems have recently made increasingly good use
of electronic control and that emphasises the point
that ruling out any of these technologies as obsolete
is flawed and, to some extent, irrelevant.
However, it is fair to say that fluid power systems
12 Spring 2014 g FOCUS 99
Hydraulic, pneumatic or electromechanical?
FOCUS 99 f Spring 2014 13
are hampered by a number of inherent disadvan-
tages. For example, pneumatic systems are typically
prone to leakages, while hydraulics can consume high
levels of energy when idling. In contrast, electrome-
chanical technology can offer a higher level of energy
efficiency because energy is only required during a
movement and there is no need for pressure to be
held up permanently while the system is in operation.
When it comes to planning a motion control sys-
tem, the key decision is whether to choose hydraulic,
pneumatic or electromechanical actuators. Cost is
naturally an issue and this may tip the scales in
favour of hydraulics because the price of an individual
hydraulic cylinder is less than that of an electric
actuator. However, it is worth bearing in mind that
ancillary costs (oil tanks, pumps, accumulators, filter
systems, hoses, etc.) may still drive up the price
of a hydraulic system. The fluid itself can increase
costs too, especially if bio-degradable oil must be
used to satisfy environmental requirements. In
contrast, electromechanical actuators only require
cables for power, signal transmission and FieldBus
connection. It must be added, though, that anci-
lary costs for hydraulics are reduced if a number
of actuators are concentrated in a small space inside
a machine, which could tip the scales back in favour
of a hydraulic solution.
Electromechanical offers a clear advantage when it
comes to drive control. Whereas the electronic control
for a hydraulic system must be specially designed for
the particular requirements of fluid engineering,
a wide range of highly cost-effective electronic control
systems are available for electromechanical solutions.
Control equipment for an electromechanical system is
compatible with stored programme control systems
(SPS) and FieldBus systems. SPS programming offers
reliably, constant control from the moment the ma-
chinery is switched on to the moment it is deactivated
and that is not the case with hydraulic drives. For
example, when an injection moulding machine using
a hydraulic drive is switched on, it first produces a run
of defective parts, whereas a fully electric-operated
injection moulding machine produces parts without
defects almost from start-up. Electromechanical
automation is also increasingly being used in place
of pneumatic systems to control welding robots in the
automotive industry. Perhaps the main reason for this
trend is the energy efficiency of the new electrically
controlled technology, which is as much as 90% more
energy efficient than the pneumatic alternative. His-
torically, the majority of these robots use pneumatic
actuation devices to grip and weld designated points
on the frame of the vehicle being assembled. This
requires a substantial amount of energy to produce
the pressurised air needed to control the robots,
escalating costs for manufacturers.
Energy costs, always a major concern in
any application, are central to the debate when
choosing between fluid or electromechanical systems.
The electrical current required by a hydraulic system
to generate high pressure must be constantly main-
tained. In contrast, electromechanical equip-
ment can be cost-effectively adjusted
to the requirements of each task
and is only consumed for
the duration of the
operating cycle.
Whatever the
output is required, the relevant amount of current is
tapped; if the load increases or decreases, the current
input is adapted accordingly.
One area where hydraulic drives may still currently
have the edge is in construction machinery. If, for
example, the shovel of a hydraulic excavator strikes
rock, the hydraulic fluid is compressed, thus prevent-
ing damage to the moving parts of the excavator.
However, it must also be said that power sensors can
switch off or reverse the drive if electromechanical
equipment encounters the same problem.
What all this evidence shows is that there are
many issues to take into account when specifying a
motion control system, and that careful consideration
is required when weighing up the options. It also has
to be said, however, that electromechanical systems
have made a massive impact and provide cost-effec-
tiveness and functionality that offer an increas-
ingly powerful alternative to engineers
across industry.
14 Spring 2014 g FOCUS 99
Our innovative SKF Energy Efficient (E2) bearings have been specifically engineered
and manufactured to reduce frictional moment by 30% or more beyond the already efficient stand-
ard SKF bearings. By exhibiting ultra-low friction, the new bearings enable equipment manufacturers to build
greater energy efficiency into their equipment, reducing the total cost of ownership for end users. www.skf.co.uk/e2
SKF Energy Efficient bearings use 30% less energy
SKF sealed E2 deep groove ball bearings
The latest bearings help to save energy and reduce CO2 in a wide range of
applications, from electric motors and two-wheelers to industrial convey-
ors and water pumps. The bearings incorporate a number of new features,
including the addition of a seal that provides minimal interference between
the inner ring and seal lip, without compromising the performance of the
sealing ability. In conjunction with optimised internal geometry, the use of
a high speed polymer cage, and long life grease for high speed applica-
tions, this helps to minimise friction, reduce running temperature and
increase operating life.
SKF E2 deep groove ball bearings
These ultra-low friction bearings offer an excellent way to reduce mechan-
ical friction in light-to-normal loaded applications, such as electric motors,
pumps, and conveyors, cutting energy consumption as a result. Because
the bearings are dimensionally interchangeable with ISO standard compo-
nents, conventional bearings can be upgraded simply and quickly to reduce
the energy consumption of existing equipment. Furthermore, as the new
SKF E2 bearings run cooler than standard bearings at equivalent loads
and speeds, additional benefits include longer grease life, and extended
re-lubrication intervals, reducing maintenance and costs still further.
FOCUS 99 f Spring 2014 15
TECHNOLOGY FOCUS GSKF E2 BEARINGS
SKF E2 double row angular contact ball bearings
These bearings are typically used in pumps, compressors, motors and
transmission applications, as well as general machinery. The latest E2
versions will help OEMs improve the design of new, energy efficient
machinery, while enabling end users to benefit from increased energy
savings and extended service life. The E2 bearings have an optimised
internal geometry, use temperature resistant fibre reinforced Polyamide
6.6 cages, are filled with special low friction grease and capped on both
sides of each bearing with steel shields. This offers a reduction in me-
chanical friction and consequently allows the bearing to run cooler than
standard bearings at equivalent loads and speeds.
The bearings are available
with bore sizes between 20 and
60 mm, and dimensionally inter-
changeable with standard or less
efficient designs, making it easy
to upgrade. They are designed
for use at operating tempera-
tures from -50 ºC to +150 ºC.
SKF Certified Rebuilder puts SKF to the test
Matt Fletcher, Managing Director of Fletcher Morland Ltd., decided to find
out how much energy an SKF E2 bearing can save.
First, the energy consumed of a brand new 7.5kW motor was meas-
ured. He then dismantled the unit and equipped it with SKF E2 deep
groove ball bearings (E2.6208-2Z/C3).
The motor with SKF E2 deep groove ball bearings turned slightly faster
at no load test. During the load test, the motor drew 150 Watts less than
it did with the standard bearings. At an average electricity cost of 10p per
kW hour, Matt Fletcher made this calculation:
A saving of 0.150 kW for a 6-7.5 kW load can be made, amounting
to £0.015 per kW hour. With 20 motors running around the clock for one
year, a plant can save around
£2,600 on its electricity bill. Big
savings - even on small motors.
To further emphasize the
positive results of his test, Matt
Fletcher noted, “the features
of the new SKF E2 bearing
increase the expected service life
of the motor – another benefit
to our industrial users that also
reinforces our good-will in the
market.”
SKF E2 Y-bearings
Y-bearings within the E2 performance class are characterised by a
frictional moment that is significantly lower than that of a same-sized
standard Y-bearing, resulting in enhanced energy efficiency. The fric-
tional moment of different sized SKF E2 Y-bearings has been measured
at various speeds and compared to that of basic design SKF Y-bearings.
The results show that for SKF E2 Y-bearings there was a reduction in the
frictional moment of at least 50% and in some cases the reduction was as
high as 75%.
SKF E2 Y-bearings are intended for those applications where reduced
energy use is an important issue. Under normal operating conditions,
these bearings can also significantly reduce lubricant consumption. Due
to the effectiveness of the seal,
when combined with lower
operating temperatures and
extended grease service life,
SKF E2 Y-bearings are consid-
ered to be re-lubrication-free
under normal operating condi-
tions. Typical applications include
industrial fans, conveyors and
textile machinery.
SKF E2 spherical roller bearings
The bearings provide an efficient solution in general purpose applications
such as industrial fans, blowers and conveyors. The SKF E2 spherical roller
bearing achieves this improved efficiency through optimised internal de-
sign features devised to minimise friction, and specially formulated grease
created for the bearing by SKF. The dedicated SKF LESA 2 grease com-
bines fully synthetic polyalphaolefine (PAO) base oil with a unique lithium
soap thickener that offers exceptional oxidation stability and resistance to
water, and enables users to get low friction torque, minimal friction losses
and quiet running from the bearing.
To optimise the internal design, SKF engineers used advanced model-
ling tools to examine the way
that components interacted in
the existing spherical roller bear-
ing. Having evaluated this data,
SKF engineers re-engineered the
cage and improved the surface
finish of the rollers and raceways
to reduce friction between the
rollers and the rolling element
lands. The optimised design also
maximised the effects of the
specially formulated low friction
SKF LESA 2 grease.
16 Spring 2014 g FOCUS 99
d The transportation of extremely hot material
at slow rotational speeds causes bearing lubricant
loss and premature failure. However, by filling the
empty space inside a bearing with an engineered
graphite mixture, SKF has offered components that
deliver extended lifespan in hostile steelmaking
environments.
With worldwide steel demand and competition on
the rise, today’s mills are looking for ways to opti-
mise production and reduce costs per tonne. Given
the harsh conditions involved in moving materials
through a mill, it is a quite a challenge. Hot and cold
rolling mills are under pressure to increase output
while maintaining, or even improving product qual-
ity. Doing so generally means adapting equipment
for higher loads or reconfiguring mill stands – an
extremely costly proposition.
In either case, the process control features
involved result in tougher working conditions and
maintenance requirements for bearing arrange-
ments. Operational safety and environmental
legislation are additional challenges.
On top of all this, few industries can match the
extreme operating conditions in steel and other
metal mills, including temperature and speed
extremes, high and constant shock loads, abra-
sive dust, aggressive chemicals and high humidity.
Combined, these conditions degrade equipment,
cause unplanned downtime and make effective
maintenance difficult at best. In short, the demands
and associated pressures of increasing productiv-
ity, profitability and sustainability have never been
greater.
To meet these needs, the designers and engi-
neers behind modern components and systems
work closely with steel mills to meet application
challenges and deliver the benefits they need to stay
competitive, from increased machine reliability and
extended maintenance intervals to reduced energy
use and optimised life cycle costing.
SKF dry lubricated bearingsIn the metals industry, roller tables and cooling beds
transport hot, semi-finished product to the next
step in the production process. The material trans-
ported is extremely hot – typically between 800 to
900 °C. This heat, combined with slow rotational
speeds, causes lubricant loss from the bearing
housings, ultimately resulting in bearing failures
and disruptive downtime.
To counter this, a common practice is the exces-
sive use of grease to compensate for both grease
loss and degradation, and to act as a barrier to
contamination. However, this results in significant
costs for the purchase and disposal of grease, fre-
quent maintenance in hazardous environments and
cleaning and water treatment. Not to mention the
danger of fire due to accumulation of grease outside
the bearing housings.
Oil-air lubrication is sometimes used as an
alternative to grease lubrication, but it is not ideal.
It requires a significant capital investment and leads
to increased costs for energy and maintenance.
A powerful solution in these applications is to
use SKF DryLube bearings. By filling the empty
space inside a bearing with an engineered graphite
mixture, SKF provides an efficient and cost-effective
alternative to the use of grease in hostile steelmak-
ing environments. Almost any SKF bearing type can
be supplied as an SKF DryLube bearing, provid-
ing extremely low and constant friction, and an
extremely high temperature limit of 350 °C.
In addition to the extremely high temperature
resistance, SKF DryLube bearings provide a series
of further benefits, such as low start-up torque at
any temperature, plus higher speed capabilities than
extreme temperature bearings with a graphite cage.
SKF DryLube bearings are lubricated for the life of
the bearing, with only minimal lubricant loss. The
bearings are suitable for extremely slow rotating
speeds and oscillating movements and consider-
ably more environmentally friendly than bearings
lubricated with oils and greases.
There are two types of SKF dry lubricated
bearing: those described above, which are vari-
ous bearing types filled with a dry lubricant, based
on graphite, molybdenum disulfide (MoS2) and a
resin binder; and extreme temperature
bearings, which are deep groove
ball bearings and Y-bearings
filled with a graphite mixture.
The benefits of the latter are
illustrated by the following
case studies.
Tough solutions for metal
Due to extremely high temperatures, steel sheet
manufacturer, SSAB Tunnplåt AB, had to deal with
the annoying chore of having to change the bear-
ings in a coil box every other week. As a result,
the company turned to SKF, which installed its
extreme temperature bearings to deliver a solution
that increased the service life by 40 times.
SSAB Tunnplåt AB is the largest sheet steel
manufacturer in Scandinavia and a European
leader in the development and manufacture of
high-strength steel grades. It has a turn-over of 1
billion euro and has an annual production capacity
of more than 2.5 million tonnes.
At the company’s hot-strip rolling mill, in
Borlänge, Sweden, 220 mm thick steel slabs are
heated in large furnaces and then rolled down to
raw strip with a thickness of a few millimetres. The
resulting coils are either sold as hot-rolled strip,
cut-to-length, or processed further.
In the process between the roughing mill and
the mill train, a coil box has been installed. In the
arm that guides the coil into the box, there are two
rollers that rotate to prevent surface damage to
the coil.
Previously, these rollers had a complicated
cooling and lubrication system, as the bearings
in the rollers were constantly exposed to a temp-
erature of almost 1,300 °C. In order to get the
bearings to last for any period of time, they were
continuously cooled with water and replenished
with grease. This bearing arrangement started
to seize after one week and had a service life of
around two to four weeks.
Each roller costs around 2,500 euros, and the
annual cost for new rollers amounted to more than
100,000 euros. Costs for the cooling and lubrica-
tion were also high and so the company turned to
SKF to provide a better solution.
The rollers are now equipped with a system
that contains SKF extreme temperature deep
groove ball bearings, equipped with graphite sepa-
rators that function as cage and contain lubrica-
tion. There is no need any longer for a complicated
cooling and lubrication system and the roller ar-
rangement have a service life of 1.5 years, instead
of the previous two to four weeks. The annual cost
for new rollers is now 2,500 euro instead of the
previous 100,000 euros.
SMS Demag AG is a world-class manufacturer of
metallurgical plants and rolling mill equipment.
The company was founded almost 200 years ago
and has developed, designed and built machinery
and plants for the world’s steel, aluminium and
copper industries.
At the end of the rolling process in a steel mill,
steel is stored in long rows and slowly cooled on
cooling beds. This cooling area is often several
hundred meters long and the steel is slowly moved
forward on the roller bed. This roller bed consists
of thousands of rollers, all equipped with bearings,
and it is important for the quality of the steel that
the bed rotates continuously.
Until recently, SMS Demag used an expen-
sive and complicated oil-air lubrication system
on standard deep groove ball bearings. However,
to make the company more price competitive,
SKF advised that the bearing system should be
changed to utilise SKF high-temperature bearings
with graphite. The need for the expensive oil- air
lubrication system was eliminated.
SKF extreme temperature bearings provide
effective lubrication even at the upper temperature
limit of 350 °C (660 °F) and are lubricated for the
life of the bearing.
With minimal lubricant loss over the life of
the bearing, and greater environmentally friendly
performance compared to many bearing lubricated
with oils and greases, SKF extreme temperature
bearings are suitable for slow and extremely slow
speeds.
Two plants have now been equipped with the
SKF extreme temperature bearings solution from
SMS Demag, with excellent results reported from
the customer.
FOCUS 99 f Spring 2014 17
INDUSTRY FOCUS GMETALS
Case study 2
Case study 1
What is basic CBM?Condition-based maintenance means repairs are only
carried out when required. If we are detecting noise,
heat or vibration through our own in-built senses,
this tends to signify that the “problem” is at the lat-
ter stages of its development. Ideally we should be
looking to identify the subtle changes at the earliest
possible moment. To do this though, we have to utilise
instruments that are more sensitive to these slight
changes in condition, than our human senses are.
To help simplify machine maintenance and prevent
costly failures, SKF have a number of basic installed
and handheld solutions.
The SKF Machine Condition Advisor and the
permanently installed SKF Machine Condition Indicator
puts the benefits of machine monitoring within reach
for any maintenance and operations teams at an
affordable price.
18 Spring 2014 g FOCUS 99
d CBM is a proven and established process that
eliminates the need to use time-based methods
for routine service tasks that are often carried out
regardless of the actual condition of machinery.
Time-based methods frequently result in equipment
being taken out of service because wear rates have
been estimated based on time in service, only for
engineers to find that there is no need to change
lubricants, replace seals or other consumable items.
The same methodology can also, if an unexpected
change in operating conditions occurs, result in com-
ponent failure long before a scheduled service inter-
val is due. In both cases, preventative maintenance
will lead to unnecessary cost in terms of downtime,
labour and replacement parts.
Basic asset care
By comparison, CBM allows engineers to monitor in
real time the operation of critical systems. CBM makes
it possible to identify potential wear or faults in mov-
ing components as they develop, and then to schedule
service or repair intervals at a time that best suits the
operational capacity of the plant.
Monitoring tools typically include devices capable of
measuring changes in vibration, especially on rotating
shafts, or changes in operating temperatures in both
mechanical and electrical systems. In each case, hand-
held units, with remote probes, or permanently fixed
sensors, can be used. The advantage of a permanent
installation is that readings are taken continuously,
and so provide true preventative maintenance in real
time; it is in this area especially that many of the
advances in technology are being made.
When considering asset reliability and implement-
ing a condition based maintenance programme, one
of the major influencers that modern day engineering
and maintenance managers have to consider is the
affordability of implementing any given system.
Therefore, to adopt and implement a CBM package
solution it must be made both suitable for the current
and future requirements, as well as affordable to
manage and expand when needed. With all these fac-
tors influencing decisions we must consider perhaps
a different approach, asking the question, ‘What do I
actually need?’ This lends itself to judging asset criti-
cality with a ‘basic, better or best’ approach, BUT on
the basis of defining the asset criticality first.
Phrases such as critical assets, equipment availability and machine uptime have become common among industrial engineers, as all sectors continue to move from traditional methods of preventative maintenance to proactive predictive maintenance, or condition-based maintenance (CBM) programmes.
Failure
Noise
Operator inspection
Temperature changes
Lubricant analysis
Vibration analysis
Potential for failure
Concl
usi
on
Time
Opportunity for corrective action
FOCUS 99 f Spring 2014 19
SKF Machine Condition Indicator (CMMS 200)
The SKF Machine Condition Indicator (MCI) is a permanently installed
sensor designed to monitor the machinery and bearing health. As the
health of the machine deteriorates, vibration, bearing degradation and
temperature will increase. When the levels exceed pre-set alarm thresh-
olds, the MCI LED’s will illuminate advising of the alarm fault. The MCI can
be complimented with the MCA as actual values can then be ascertained
to confirm the next course of action. Any installed MCIs should be incorpo-
rated into a regular inspection/basic asset care programme.
Customer benefits include:g Simple installation makes monitoring easy and affordable
g Helps monitor non critical balance of plant
g Provides lead status on machine condition
g Measures machine vibration, bearing condition and temperature
every 3 hours
g Helps to avoid costly unplanned downtime
The MCI is designed to be permanently attached to rotating machines that meet the following criteria:g General purpose
g Run at a constant speed between 900 – 3,600 rpm
g Ambient temperature of 20 to +85 °C
g The MCI is not recommended for critical or precision machinery,
or assets installed in hazardous/ATEX area
SKF Machine Condition Advisor (CMAS 100-SL)
By measuring machine vibration and temperature at the same time, the
SKF Machine Condition Advisor (MCA) can quickly and accurately assess
the condition of rotating equipment throughout your facility. Ideal for
novice and expert users alike, the SKF Machine Condition Advisor makes
it easy to implement basic maintenance practices without extensive train-
ing. Suitable for a wide range of industrial rotating machinery, the SKF
Machine Condition Advisor provides early warning of potential problems
before failures occur.
Customer benefits include:g Simple application makes monitoring easy for non-experts
g Helps prevent over-and under-lubrication
g Provides advice on machine condition
g Measures machine vibration, bearing condition and temperature
with displayed values
g Helps to avoid costly unplanned downtime
The MCA is designed to be used on rotating machines that meet the following criteria:g General purpose
g Run at a constant speed between 500 – 3,600 rpm
g Velocity range between 0.7 – 65 mm/s
g Enveloped acceleration between 0.2 – 50.0 gE
g Temperature of -20 to +200 °C
g New SKF SYSTEM 24 TLSD Series provides simple, automatic lubrication g New sealed SKF single row angular contact ball bearing
gSKF SPEEDI-SLEEVE restores worn shafts quickly and economically g New automatic lubricant dispenser TLMR series
g SKF Belt Alignment Tools prevent belt-driven machinery downtime g Solid Oil lubrication protects bearings
PRODUCT FOCUS
The latest problem-solving solutions
20 Spring 2014 g FOCUS 99
SKF continues to provide powerful application-specific solutions to meet the challenges posed by a range of industries, as proven by this round-up of recent introductions and upgrades.
d New SKF SYSTEM 24 TLSD Series provides simple, automatic lubrication
The robust construction of the new TLSD lubricator is especially suit-
able for use in applications with high levels of vibration or fluctuating
operating temperatures; a special version is also available for use in
cold temperatures. In each case the product offers an effective solution
for the lubrication of bearings, shafts and spindles, helping to extend
machine operating life and reduce maintenance costs.
The TLSD Series is a stand-alone device, consisting of a lubricant
reservoir and a battery powered unit that can be programmed to
dispense lubricant in various monthly settings. Connection to each
machine is via either a direct mount or a feed line, each terminating
with a standard G1/4 thread.
The reservoir can be supplied in two sizes (125ml and 250ml) filled
with SKF specified high performance oils or greases. Maximum operating
pressure is 5bar.
The drive unit uses a simple rotary switch, protected by a clear
plastic cap, enabling the TLSD to be programmed to dispense lubricant
in intervals of choice. Additionally, a green-amber-red traffic light LED
display, visible from all angles, clearly shows the operating status of
the device.
d New sealed SKF single row angular contact ball bearing
The new bearing features two non-contact steel
reinforced NBR (Nitrile Butadiene Rubber) seals,
and a high performance, long lasting polyurea (GXN)
grease as standard.
The non-contact seal lip design forms an
extremely narrow gap between the seal lip and its
counterface on the bearing inner ring to exclude con-
taminants and retain grease, even in applications with vertical shafts.
And because they are non-contacting, the seals do not generate frictional heat,
which enables the bearings to operate at the same high speeds as open bearings.
Cooler operating temperatures also extend the service life of the lubricant.
In comparison tests, sealed SKF single row angular contact ball bearings operated
with 30% lower peak temperatures and 20% lower steady-state temperatures than
same-size bearings with contact seals (values based on °C).
Sealed SKF single row angular contact ball bearings in the 72 series range from
15 to 55 mm bore. Bearings in the 73 series range from 12 to 50 mm bore. As stand-
ard, they are available as non-matchable bearings for single use, however they can also
be offered as universally matchable bearings in 3 clearance and preload classes.
d New Lincoln 18 volt PowerLuber grease gun with lithium ion battery
SKF has developed the PowerLuber grease gun for
maintenance professionals. The most advanced grease
gun in its class, the 18-volt PowerLuber features an
LCD display that indicates grease dispensed, cartridge
level, charge level and more.
Its 18-volt, high-amperage, lithium-ion battery provides superior run time, and
its two-speed design delivers outstanding flow and pressure. For operator convenience,
the grease gun’s LED lights fittings when under equipment or in shaded areas. The
18-volt PowerLuber offers dual motor protection with its self-resetting thermocouple.
The grease gun features a 90 cm hose with spring guard for maximum accessibility
and comes in a heavy-duty carrying case.
d Solid Oil lubrication protects bearings
An innovation in lubrication, Solid Oil
protects bearings that are used in
particularly demanding applications,
in areas where they cannot easily be
re-lubricated, or where high levels of
contamination can otherwise affect
their operation.
The Solid Oil technology is
contained within the normal bearing
envelope and has no negative impact
on performance or functionality, yet depending on the application it can significantly
prolong operating life.
SKF bearings filled with Solid Oil are essentially sealed for life, using a conven-
tional cage and rolling element arrangement that incorporates a specially developed
oil-impregnated polymer material, which completely fills the internal voids within
each bearing, leaving a narrow gap between rolling elements and raceways. The
micro-porous structure of the polymer material holds up to four times more oil than
a conventional grease-filled bearing, and allows oil to be released gradually around
the moving internal surfaces, ensuring uniform and consistent lubrication for the
operating life of each bearing.
This construction offers a number of important benefits over conventional bear-
ings. In particular, it enables oil to be dispersed evenly over the bearing surfaces
regardless of operating temperature. For example, at low temperatures a Solid Oil
bearing has extremely low start-up torque, compared with competing grease-filled
bearings; similarly, as operating temperatures rise, increasing the viscosity of the oil,
so the lubricant expands and is pushed outwards from the polymer layer to match
the increased requirement for lubrication of the moving surfaces. Once the bearing
stops rotating, any excess oil is reabsorbed by the polymer matrix.
G LATEST SOLUTIONS
FOCUS 99 f Spring 2014 21
d SKF Belt Alignment Tools prevent belt-driven machinery downtime
The SKF Belt Alignment Tools TKBA 10 and TKBA 20 allow pulleys and
sprockets to be aligned on the side face. The unit magnetically attaches
to the inside or outside face of almost any belt pulley or chain sprocket
and has no small parts or targets that can get lost. A laser line is pro-
jected from the transmitter unit to the reflector unit mounted on the
opposite pulley. A reference line on the reflector unit directly indicates the
offset and vertical angle misalignment. The reflected laser line shown on
the transmitter unit shows the horizontal angle misalignment of all three.
d New automatic lubricant dispenser TLMR series
The TLMR series lubricant dispenser is ideal for difficult-to-reach or
hazardous lubrication points and are resistant to water, dust and vibration.
The new lubricant dispensers deliver maximum discharge pressure of
up to 30 bar and provide reliable operation in temperatures ranging from
-25 degrees Celsius to +70 degrees Celsius. The TLMR 101 lubricator is
powered by standard-sized, Lithium AA batteries, while the TLMR 201
utilizes 12- or 24-volt DC. Both models are available with 120ml or
380ml, easily replaceable lubricant cartridges for applications requiring
high lubricant consumption.
The lubricators are simple to install and offer a longer service life than
competitive products (up to 24 months). Both units have earned an IP
(Ingress Protection) code of 67 and feature LED status indicators that
signal proper function, low grease level and errors.
d SKF SPEEDI-SLEEVE restores worn shafts quickly and economically
By using SKF SPEEDI-SLEEVE, worn shafts which give rise to defective sealing can be
quickly restored to as-new condition without the need to dismantle the machinery in
which they are used, and without the need for costly shaft re-grinding. The result is big
reductions in maintenance costs and plant downtime.
SKF SPEEDI-SLEEVE is a thin-walled, hardwearing sleeve with a high-quality finish,
and is simply pushed into position over a worn shaft to provide it with a brand new
sealing surface. The shaft requires no preparation or pre-treatment, making installation
fast and straightforward; the only tools needed are a mallet, a pair of pliers and the
fitting tool supplied with the sleeve.
With the sleeve in place, the size of seal which was previously used will still be
a perfect fit, eliminating the need to locate and purchase new seals, as is invariably
necessary when worn shafts are reground.
The standard SKF SPEEDI-SLEEVE is made from high-quality stainless steel, with
a surface that is machined without directionality - a better finish than can normally
be obtained by machining the shaft itself. The sleeves are available in sizes to cover
common shaft diameters from 12 to 203 mm and, subject to minimum order require-
ments, custom sizes can also be produced.
22 Spring 2014 g FOCUS 99
”WE HAVE ALREADY IDENTIFIED A LARGE NUMBER OF FAULTS THAT HAVE SAVED HUNDREDS OF THOUSANDS OF POUNDS, PLUS A LOT OF POTENTIAL DOWNTIME,” PAUL DEIGHTON, GENERAL MANAGER, SKF RELIABILITY SYSTEMS
SKF WindCon saves £1 million for global wind farm operator
d SKF WindCon, a powerful condition
monitoring system for wind turbines,
has saved an estimated £1 million for
a single global wind farm operator. SKF
WindCon was designed to enable wind
farms to extend turbine maintenance
intervals, manage resources more
effectively and avoid costly downtime,
and results from operators are proving
time and again the potential to achieve
this on a grand scale.
“A large number of this customer’s
1.3 megawatt turbines across the UK
and Ireland were coming out of war-
ranty,” explains Paul Deighton, General
Manager, SKF Reliability Systems.
“So they carried out an extensive study
to determine their best option for main-
taining them in the future. To increase
reliability it’s vital to identify problems
at an early stage. The customer’s
research suggested that SKF WindCon
would be a good retrofit and would
offer them more controllability.”
SKF WindCon is installed in hun-
dreds of turbines around the world.
It features CAN-bus interconnectivity
to a number of systems typically
found in modern wind turbines,
such as centralised lubrication, blade
monitoring, and gearbox oil condition
systems. These elements can be re-
motely monitored simply and accurately
at any maintenance centre using SKF
WebCon software. Using vibration sen-
sors mounted on a turbine’s main shaft
bearings, drive train gearbox and gen-
erator, SKF WindCon collects, analyses,
and compiles a range of operating data
that can be configured to suit a wind
farm’s specific requirements. The data
collected facilitates root cause failure
analysis to eliminate recurring failures
and keep costs down.
With this particular installation,
SKF WindCon prevented downtime and
machine failure to deliver a measurable
cost saving. An engineering diagno-
sis rule introduced in SKF @ptitude
Observer software detected a hairline
crack on a gear tooth. The crack would
have been difficult to inspect even with
the naked eye and prolonged running of
the gearbox would have led to complete
tooth fracture. However, detecting the
defect at an early stage resulted in sav-
ing around £57k in repair costs, as well
as the added cost of gearbox ancillaries
such as oil pump, hose, filter and so on.
The installation was carried out
seamlessly and despite there being a
large number of turbines, SKF were
able to install their system in just four
months. SKF @ptitude Observer is
easy to use and the software can be
adapted to any algorithm. SKF WindCon
offers an unrivalled level of insight
into machine condition, as well as a
CUSTOMER FOCUS GSKF WINDCON
Enter the competition and you could be the lucky winner of an Olympus SZ-14 camera. Simply find and circle the eight differences within the picture and return to SKF.
CLOSING DATE:
30 APRIL 2014
dCOMPETITION FOCUS 99 dFOCUS 98 COMPETITION WINNERS
FIRST PRIZE of Go touchscreen tablet:Stephen Gibson – Barnwell Services
FIVE, SECOND PRIZE WINNERS each receive a leather travel wallet:Charles Preston – Designs Unlimited, Neil Osell – Antifriction Components, Dave Shute – Bearing & Engineering Services Ltd, Stuart Shortland – Eriks UK, Chris Carrick – ADC Electrical
TEN, THIRD PRIZE WINNERS each receive a men’s leather wallet:Stuart Webb – BRT Bearings, Alan Rogers – Bosch, John Robinson – Brett Martin Ltd, Aaron Lowe – Logan Teleflex, Matthew Jackson – Eriks UK, Neil Davies – Antifriction Components, Matt Boaden – Nottingham Electrical, Peter Green – Antique Automotive Services, Giles Pearson – Pearson Consultants, Joseph Nixon – Brammer UK Ltd
high degree of flexibility for a condition
monitoring engineer to analyse
the data.
”We have already identified a large
number of faults that have saved
hundreds of thousands of pounds,
plus a lot of potential downtime,”
says Paul Deighton. “The cost of wind
turbine maintenance is high, even when
it is onshore, and if a crane is required
in a remote location, for example, it can
be a logistical nightmare as well as a
huge expense. For operators, profit-
ability can only be maximized if turbines
are available at all times; they cannot
afford to have broken turbines standing
idle. Availability of turbines is crucial and
condition-based monitoring is key to
achieving that.”
GLITERATURE
d For further literature, please visit: www.skf.co.uk/literature
Here you’ll find some of the latest brochures and catalogues available from SKF. To receive your own personal copies simply complete the relevant section of the reader reply service on the inside back cover and return to SKF.
The latest literature from SKF
Rolling bearings Spherical plain bearings and rod ends Bearing housings and roller bearing units
Ref no: BU/P1 10000 EN Ref no: BU/P1 06116 EN Ref no: BU/P1 13186 EN
This 1,400 page catalogue
replaces the General
catalogue and is generally
regarded as the definitive
engineer’s guide for rolling
bearing and accessory
design, selection and ap-
plication. Redesigned for
ease of use and tables
of contents have been
expanded.
This 782-page catalogue
features 18 chapters,
beginning with an over-
view looking at selection
and application, plus
detailed advice on issues
such as lubrication and
mounting. With a com-
prehensive index engi-
neers can find information
quickly and easily.
Super-precision bearings Industrial shaft seals Maintenance and lubrication products
Ref no: BU/P1 13383 EN Ref no: SE/P1 10919/I EN Ref no: MP/P1 03000 EN
This 424-page catalogue
contains the standard
assortment of SKF
super-precision bearings
typically used in machine
tool applications. Divided
into 9 chapters includ-
ing design and applica-
tion recommendations,
bearing types, lock nuts,
gauges and a full index.
This 484-page catalogue
includes a selection of
our complete assortment
of shaft seals and access-
ories. Product lines
include radial shaft seals
axial shaft seals and wear
sleeves and incorporates
material, design and
application guidelines.
This 170-page catalogue
profiles the range of
bearing mounting and
dismounting, instruments
and lubrication products
available from SKF. Also
included is the SKF Bearing
Life Cycle - helping your
bearing achieve its maxi-
mum service life.
Power transmission products Linear motion standard range Y-bearings and Y-bearing units
Ref no: PT/P1 11015 EN Ref no: MT/P1 12774 EN Ref no: BU/P1 06001 EN
This 308-page catalogue
details the SKF range
of pwer transmission
products, inlcuding:
belts, chains, couplings,
bushings and hubs,
sprockets, pulleys and
smart tools.
This 252-page catalogue
provides an overview
of SKF’s full range of
products, systems and
solutions available from
its Actuation and Motion
Control business unit.
A 314-page catalogue
detailing the range of con-
ventional SKF ball bearing
units. These units can
accommodate moderate
initial misalignment, but
normally do not permit
axial displacement.
They are supplied as
ready-to-mount and
ready-to-use units.
FOCUS 99 f Spring 2014 23
This 214-page catalogue
profiles the range of
bearings suitable for
oscillating movements
that can accomodate
misalignment. Content
includes design and
application recommenda-
tions, types, product
tables and selection
charts.
Reader reply service
As the leading global supplier of products, customer solutions and services in the rolling bearing, seals, mechatronics and lubrication systems business we pride ourselves on being able to offer in-depth technical advice on both application and industry-specific problems. So, for further information on any of the articles featured in this edition, please tick the relevant box(es) below, fill in your contact details, and then simply tear-off and return to SKF.
N Rolling bearings
N Super-precision bearings
N Power transmission products
N Other
N Spherical plain bearings and rod ends
N Industrial shaft seals
N Linear motion standard range
N Bearing housings and roller bearing units
N Maintenance and lubrication products
N Y-bearings and Y-bearing units
Catalogue request service
Products, systems and solutions
GREADER REPLY
For further information and/or to enter the competition please enter your
details below (BLOCK CAPITALS PLEASE):
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to the SKF database (BLOCK CAPITALS PLEASE):
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FOCUS 99 f Spring 2014 24
N Please cancel my copy of FOCUS and remove my details from the database
N Power transmission products
N Asset management conference
N Machined seals
N Magnetic bearings
N 2014 training catalogue
N Upgraded SKF Explorer roller bearings
N Machine tool spindle refurbishment
N SKF Spindle Assessment Kit
N SKF Machine Tool Observer MTx
N SKF Linear ball bearings and units
N SKF Extended Life Plain Bearings
N SKF Thermal cameras TKTI series
N Electromechanical cylinders
N CASM electric cylinders
N SKF dry lubricated bearings
N SKF E2 deep groove ball bearings
N SKF E2 sealed deep groove ball bearings
N SKF E2 spherical roller bearings
N SKF E2 Y-bearings
N SKF Machine Condition Advisor
N Double row angular contact ball
bearings
N SKF Machine Condition Inspector
N SKF SYSTEM 24 TLSD lubricators
N Automatic lubricant dispenser TLMR
N Sealed angular contact ball bearings
N SKF SPEEDI-SLEEVE
N Solid Oil bearings
N SKF Belt alignment tools TKBA series
N Lincoln 18 V PowerLuber
N SKF WindCon
N Other
Circle the eight differences on the right hand picture for your chance to win one of the following prizes. 1st prize: Olympus SZ-14 camera, 2nd prize x 5 SKF Victorinox swiss cards, 3rd prize x 10 SKF multi-function tools . To enter, please send this page together with your contact details entered overleaf by 30 April 2014 to the address below.
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You have always counted on SKF products, systems and solutions to keep your equipment running.
You can now count on us for something else that is critical to your operation – a complete line of power
transmission products including: V and wedge belts, timing belts, pulleys, couplings and universal
joints, chains, sprockets, bushings and hubs, special belts, and smart tools.
Power transmission products are delivered with the same speed and accuracy that is the hallmark of
our industry-leading logistics. Which means you get just what you need, just when you need it.
For further information visit: www.skf.co.uk/pt
Together at last!One reliable source for your power transmission products
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