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SKF ExplorerFour-point contact ball bearings – FPCBB

Improved precision class:2 Boundary dimensions and

running accuracy P6;2 Width tolerance 0/–40µm

2 Ultra-clean steel2 Laser marking

on all rings2 Environmental

friendlypreservative

2 Improvedsurfacecleanliness

2 Unique heattreatmentprocessrings stabilizedto 150°C

New cages:2 Reengineered

brass cage2 Improved

geometry2 New high

temperaturePolymer cagematerial – PEEK(PolyEther-EtherKeton)

2 Upgraded balls

2 Special chamferfor lubricationand dismounting

2 New clearancedistribution

2 Ground transitionraceway/shoulder

2 Stress optimizedcross section

2 N2 notches accordingISO/TC4N1289 (ISO464)DIN628-4 andÖNORM M6318-2

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Steel quality Product features

2 Extremely clean andhomogenous steel

2 Reduced oxygen level content2 Improved steel quality

SKF Explorer FPCBB: Material developmentCustomer benefits

2 Explorer bearings madeof steel with an absoluteminimum of inclusions

2 Increased bearingperformance life

2 Reduced possibilityof fatigue failure

Bearing steel process development

1970 1980 1990

S0 standardheat treatment

Product features

2 Maximum operatingtemperature of +150°C

2 Minimum dimensionalchanges

2 Constant predeterminedclearance also after10 000 hours at 110°C

SKF Explorer FPCBB: New heat treatmentCustomer benefits

2 Increased safety factorat unchanged design

2 Longer service intervals2 Increased machine uptime2 Increased power density2 Extended service life

2000

Product feature

2 Dismounting chamfer

SKF Explorer FPCBB: Special chamfer for dismountingCustomer benefits

2 Simpler adjacent components2 Simpler dismounting2 No damage of shaft2 Standard SKF dismounting

tools TMBS series

Product features

2 Improved oil flowinto the bearing

2 Stress optimized cross section

SKF Explorer FPCBB: Special chamfer for improved lubrication and fittingCustomer benefits

2 Lower heat generation2 Simpler adjacent component2 Reduced risk of fretting

corrosion2 Minimized change of contact

angle and clearance

New innerring shape

Special dismounting chamfer

Standard Explorer

TMBS tool

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Ground transitionraceway/shoulder

Product features

2 Higher thrust load capability2 Lower contact stresses2 Reduced edge stresses

SKF Explorer FPCBB: Improved raceway shoulder contactCustomer benefits

2 Increased power density, higher load rating,

increased thrust loadcapability

2 Higher safety factor2 Extended service life

Product features

2 Constant contact angle2 Robust design

SKF Explorer FPCBB: New clearance distributionCustomer benefits

2 Lower friction2 Longer service life

Clearance (Ga)distribution on allrings

Defined to therespective ISOclass (C2, C2L,C2H, normalC3...)

Improved boundary dimensionand running accuracy

Improved boundary dimensionand runningaccuracy definedas ISOP6 andwidth tolerance0/–40µm

Product features

2 Better precision class2 Narrower tolerances2 Reduction of runout

of about 30%

SKF Explorer FPCBB: Improved running and dimensional accuracyCustomer benefits

2 Reduced vibration level2 Lower heat generation2 Longer service intervals2 Higher speed capabilities2 Extended service life2 Easier mounting and matching

due to width tolerance÷ cost saving

Product features

2 Improved ball contact inthe cage pocket

2 Improved lubrication2 Improved running accuracy2 Lower imbalance forces2 Larger cage inner diameter2 Reduced weight

SKF Explorer FPCBB: Reengineered brass cageCustomer benefits

2 Higher speed rating2 Lower heat generation2 Reduced vibration/noise2 Improved oil flow,

better ventilation2 Extended service life

Improved machined brass cage

Ga/2

Ga/2

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SKF Österreich AG

Seitenstettner Straße @5A-4400 SteyrTel.: +43(72 52)797-0Fax: +43(72 52)797/100anita.maderthaner@skf.com

For further information see www.skf.com/explorer or please contact:® SKF is a registered trademark of SKF.

© Copyright SKF 2004The contents of this publication are the copy-right of the publisher and may not be repro-duced (even extracts) unless permission isgranted. Every care has been taken to ensurethe accuracy of the information contained inthis publication but no liability can be accep-ted for any loss or damage whether direct, in-direct or consequential arising out of the useof the information contained herein.

BP 101 EN

Printed in Austria

SKF Explorer Four-point contact ball bearings – FPCBBThe New Performance Class ÷ Extended Service Life

Product features

2 All rings marked, showingoptimum mounting position

SKF Explorer FPCBB: Further improved performanceCustomer benefits

2 Saver mounting2 Improved running accuracy2 Reduced vibration and noise2 Extended service life

Special Marking on all rings

Product features

2 Improved ball contact inthe cage pocket

2 Improved guidance/improved lubrication

2 More space for oil flow2 Improved running accuracy2 Lower friction2 Reduced weight2 Higher structural flexibility2 Best emergency running

properties

SKF Explorer FPCBB: New High Temperature Polymer cage materialCustomer benefits

2 Capable for applicationsup to 150°C

2 Lower heat generation2 Improved oil flow,

better ventilation2 Reduced noise2 Higher speed rating,

quicker start up, lowerinertia (higher acceleration)

2 Best tribological properties2 Excellent resistance against

additives and chemicals

Improved Polymer cage material– PEEK (PolyEtherEtherKeton)