>> P.40
1-4BearingSelection(7)ToleranceandclassBearingsbelongtoclasses,forwhichthetolerancesandtolerancevaluesareregulatedbyJISandABMA.MinebeaMitsumiusestheregulationsinJISB1514-1and-3andABMA12.2and20.Themainsymbolsusedinthestandardsareasbelow.Toleranceandtolerancevalues*SymbolsregulatedinJISB0124Quantifiersconcerningbearing,racewayring,andstartingplatedimensionsanddimensionaldeviationsNominaldimensionsymbol*Propertysymbol*DescriptiontΔdmptΔdstVdsptVdmptΔBstVBstΔDmptΔDstVDsptVDmptΔD1sDimensionaldeviationbetweentheinnerdiameterintermediatesize(obtainedviatwo-pointmeasurement)andthenominaldimensioninanarbitrarylateralcross-sectionDimensionaldeviationofthetwo-pointdistanceofacylindricalholeandthenominaldimensionDifferencebetweenmaximumandminimumvaluesofthetwo-pointdistanceoftheinnerdiameterinanarbitrarylateralcross-sectionofacylindricalhole(rangesize)Differencebetweenmaximumandminimumvaluesoftheinnerdiameterintermediatesize(obtainedviatwo-pointmeasurement)inmultiplearbitrarylateralcross-sectionsofacylindricalhole(rangesize)Dimensionaldeviationofthetwo-pointdistanceoftheinnerringwidthandthenominaldimensionDifferencebetweenmaximumandminimumvaluesofthetwo-pointdistanceoftheinnerringwidth(rangesize)Dimensionaldeviationbetweentheouterdiameterintermediatesize(obtainedviatwo-pointmeasurement)andthenominaldimensioninmultiplearbitrarylateralcross-sectionsDimensionaldeviationofthetwo-pointdistanceoftheouterdiameterandthenominaldimensionDifferencebetweenmaximumandminimumvaluesofthetwo-pointdistanceoftheouterdiameterinanarbitrarylateralcross-section(rangesize)Differencebetweenmaximumandminimumvaluesoftheouterdiameterintermediatesize(obtainedviatwo-pointmeasurement)inmultiplearbitrarylateralcross-sections(rangesize)Dimensionaldeviationofthetwo-pointdistanceoftheouterringflangeouterdiameterandthenominaldimensiondNominalinnerdiameterBNominalinnerringwidthDNominalouterdiameterD1Nominalouterdiameteroftheouterringflange40
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