focus - skf12-155378/focus99.pdfa full product range: an skf authorized distributor gives you swift...

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:

[email protected]

Asset Management conference16 to 18 June 2014, InterContinental Hotel, Prague, Czech Republic


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


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


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”.


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


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


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


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


Hydraulic, pneumatic or electromechanical?


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.


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.


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.


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.


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.


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


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


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


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.


”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


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.


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.


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


details the SKF range

of pwer transmission

products, inlcuding:

belts, chains, couplings,

bushings and hubs,

sprockets, pulleys and

smart tools.


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.



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):

Please send my colleague below future copies of FOCUS and add their details

to the SKF database (BLOCK CAPITALS PLEASE):

Mr/Mrs/Miss/Ms First name:

Surname:

Job title:

Company name:

Address:

Town:

Postcode:

Tel no:

E-mail:

Nature of business:

Mr/Mrs/Miss/Ms First name:

Surname:

Job title:

Company name:

Address:

Town:

Postcode:

Tel no:

E-mail:


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.

Spot-the-difference competition

Country Communication Centre

SKF (U.K.) Limited

FREEPOST MK1540

Luton LU3 3BR

Please tear-out, fold, seal and return to SKF

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

SKF (U.K.) Limited01582 490049www.skf.co.uk

focus - skf12-155378/focus99.pdfa full product range: an skf authorized distributor gives you swift...

Documents