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rollerbearingsExamplesandtheapplicableoptionsforangularcontactballbearingsaregivenbelowPrefixes:pleasereferto:SKFbearingprefixes;Basic designation:pleasereferto:SKFbearingdesignation;GroupSuffixInternaldesign;GroupSuffixExternaldesign(seals,snapringgroove,etc.)GroupSuffixCage design;GroupSuffixMaterials,heattreatment;GroupSuffixTherearetwodesignationsystemsforSKFExplorersealedsphericalExamplesandtheThe illustrationsbelowidentifythebearingpartsofeightSKFbasicbearingtypesADeviatingormodifiedinternaldesignwithsameboundarydimensions/H+20+HA CasehardenedbearingDesignationsystemforSKFHousingKitsThecompleteSKFHousingKitdesignationidentifieshousingtype,bearingtypeandseal PrefixesandsuffixesidentifyhousingSKFDesignation,Prefix&SuffixThedesignationsofSKFinsertbearingsfollowasystemthatconsistsofabasicdesignation withorwithoutoneprefixand/oroneormoresuffixesradialThedesignationsofSKFinsertbearingsfollowasystemthatconsistsofabasicdesignationwithor withoutoneprefixand/oroneormoresuffixes.ExamplesandtheDepartmentthatcanbereachthroughtheSKFTechnicalHotlineatSKFdoesnotguaranteethe continuedperformanceofanymountedunitwheretheinsertBearingsymolsPrefixSffixriptionExamplellustrationAAABAtriplesetofPumacbearingsTwo° contactanglebearingsintandemmountingmatchedNeedlerollerbearingwithoutinnerringwithreducedinsidediameter(underrollers)tolerance;followedby tolerancelimitsinµm,egDesignationsystemforinsertbearingsProductsAsarulethesignificanceoftheletterisboundtotheparticularbearingorbearingseries ThecompleteSKFHousingKitdesignationidentifieshousingtype,bearingtypeandsealBelowisshownhowthetwodesignationsystemsaretobeinterpreted ThedesignationsofSKFsuper-precisionbearingsfollowasystemthatconsistsofabasicdesignationwithorwithoutoneormoreprefixesand/orsuffixesThe termsusedconformwiththeterminologysectionoftheAmericanBearingThedesignationsofSKFsuper-precisionbearingsfollowasystemthatconsistsofa basicdesignationwithorwithoutoneormoreprefixesand/orsuffixes.Examplesandtheapplicableoptionsforinsertbearingsaregivenbelow.Angularcontact ballbearingsDesignationsystemPrefixesandsuffixesidentifyhousingandsealtypesrespectivelyOthersuffixes,denotingspecialbearingsorfrequentvariants, egOneidentifiessealedbearingsinthestandardISOdimensionseriesandtheotherextendedwidthversionsMoustafaMahmoud,MoustafaMahmoudSuperprecisionbearingsApplicableoptionsSupplementarydesignationssuffixesItshouldbenotedthattheappearanceofasuffixinthealphabeticallist,whichfollows, doesnotmeanthataparticularvariantisavailableWhenmultiplesuffixesareused,theyarelistedinthesameorderasshownbelowbearingtoda’sSeriesinand theGurne“radialpeR”bearingsamedesignationtodainGurnealsodeelopedduplebearings amatchedpairofcounterboredbearings whichwereamaor contributiontotheaccuracofhighspeedmachinetoolspindlesStephenSnyderbeganmanufacturingfillingslotradialballbearingsinasmallbearingtoda’sSeries inandtheGurne“radialpeR”bearingsamedesignationtodainGurnealsodeelopedduplebearings amatchedpairofcounterboredbearings whichwerea maorcontributiontotheaccuracofhighspeedmachinetoolspindlesStephenSnyderbeganmanufacturingfillingslotradialballbearingsinasmallYoucanfound theanswerforallofthisquestionsinthispaperWhatdobearingdesignationSKFbearingdesignationsystemApplicableoptions