ISO 21940-11-2016 Mechanical vibration — Rotorbalancing —Part 11 Procedures and tolerances for rotors with rigid behaviour

ISO2016MECHANICALVIBRATIONROTORBALANCINGPART11PROCEDURESANDTOLERANCESFORROTORSWITHRIGIDBEHAVIOURVIBRATIONSMCANIQUESQUILIBRAGEDESROTORSPARTIE11MODESOPRATOIRESETTOLRANCESPOURROTORSCOMPORTEMENTRIGIDEINTERNATIONALSTANDARDISO2194011FIRSTEDITION20161115REFERENCENUMBERISO21940112016ECOPYRIGHTINTERNATIONALORGANIZATIONFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHVARIOUSNATIONALSTANDARDSBODIESNOTFORRESALE,02/15/2017192805MSTNOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,ISO21940112016EIIISO2016ALLRIGHTSRESERVEDCOPYRIGHTPROTECTEDDOCUMENTISO2016,PUBLISHEDINSWITZERLANDALLRIGHTSRESERVEDUNLESSOTHERWISESPECIFIED,NOPARTOFTHISPUBLICATIONMAYBEREPRODUCEDORUTILIZEDOTHERWISEINANYFORMORBYANYMEANS,ELECTRONICORMECHANICAL,INCLUDINGPHOTOCOPYING,ORPOSTINGONTHEINTERNETORANINTRANET,WITHOUTPRIORWRITTENPERMISSIONPERMISSIONCANBEREQUESTEDFROMEITHERISOATTHEADDRESSBELOWORISOSMEMBERBODYINTHECOUNTRYOFTHEREQUESTERISOCOPYRIGHTOFFICECHDEBLANDONNET8CP401CH1214VERNIER,GENEVA,SWITZERLANDTEL41227490111FAX41227490947COPYRIGHTISOORGWWWISOORGCOPYRIGHTINTERNATIONALORGANIZATIONFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHVARIOUSNATIONALSTANDARDSBODIESNOTFORRESALE,02/15/2017192805MSTNOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,ISO21940112016EFOREWORDVINTRODUCTIONVI1SCOPE12NORMATIVEREFERENCES13TERMSANDDEFINITIONS14PERTINENTASPECTSOFBALANCING141GENERAL142REPRESENTATIONOFTHEUNBALANCE143UNBALANCEEFFECTS244REFERENCEPLANESFORUNBALANCETOLERANCES245CORRECTIONPLANES4451GENERAL4452ROTORSWHICHNEEDONECORRECTIONPLANEONLY4453ROTORSWHICHNEEDTWOCORRECTIONPLANES4454ROTORSWITHMORETHANTWOCORRECTIONPLANES446PERMISSIBLERESIDUALUNBALANCE45SIMILARITYCONSIDERATIONS551GENERAL552PERMISSIBLERESIDUALUNBALANCEANDROTORMASS553PERMISSIBLERESIDUALSPECIFICUNBALANCEANDSERVICESPEED66SPECIFICATIONOFUNBALANCETOLERANCES661GENERAL662DERIVATIONOFTHEUNBALANCETOLERANCES663BALANCEQUALITYGRADEG7631CLASSIFICATION7632SPECIALDESIGNS7633PERMISSIBLERESIDUALUNBALANCE1064EXPERIMENTALEVALUATION1065UNBALANCETOLERANCESBASEDONBEARINGFORCESORVIBRATIONS10651BEARINGFORCES10652VIBRATIONS1166METHODSBASEDONESTABLISHEDEXPERIENCE117ALLOCATIONOFPERMISSIBLERESIDUALUNBALANCETOTOLERANCEPLANES1171SINGLEPLANE1172TWOPLANES11721GENERAL11722LIMITATIONSFORINBOARDROTORS12723LIMITATIONSFOROUTBOARDROTORS128ALLOCATIONOFUNBALANCETOLERANCESTOCORRECTIONPLANES1381GENERAL1382SINGLEPLANE1483TWOPLANES149ASSEMBLEDROTORS1491GENERAL1492BALANCEDASAUNIT1493BALANCEDONCOMPONENTLEVEL1410ACCOUNTINGFORERRORSINTHEVERIFICATIONOFPERMISSIBLERESIDUALUNBALANCES15101GENERAL15102UNBALANCETOLERANCE15103COMBINEDERROROFUNBALANCEMEASUREMENTS15ISO2016ALLRIGHTSRESERVEDIIICONTENTSPAGECOPYRIGHTINTERNATIONALORGANIZATIONFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHVARIOUSNATIONALSTANDARDSBODIESNOTFORRESALE,02/15/2017192805MSTNOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,ISO21940112016E104VERIFICATIONOFTHEPERMISSIBLERESIDUALUNBALANCE151041GENERAL151042UNBALANCEREADINGSWITHINTOLERANCE161043UNBALANCEREADINGSOUTOFTOLERANCE161044REGIONOFUNCERTAINLY16ANNEXAINFORMATIVEEXAMPLEOFTHESPECIFICATIONOFPERMISSIBLERESIDUALUNBALANCEBASEDONBALANCEQUALITYGRADEGANDALLOCATIONTOTHETOLERANCEPLANES17ANNEXBINFORMATIVESPECIFICATIONOFUNBALANCETOLERANCESBASEDONBEARINGFORCELIMITS21ANNEXCINFORMATIVESPECIFICATIONOFUNBALANCETOLERANCESBASEDONESTABLISHEDEXPERIENCE23ANNEXDINFORMATIVERULESFORALLOCATINGUNBALANCETOLERANCESFROMTOLERANCEPLANESTOCORRECTIONPLANES25BIBLIOGRAPHY28IVISO2016ALLRIGHTSRESERVEDCOPYRIGHTINTERNATIONALORGANIZATIONFORSTANDARDIZATIONPROVIDEDBYIHSUNDERLICENSEWITHVARIOUSNATIONALSTANDARDSBODIESNOTFORRESALE,02/15/2017192805MSTNOREPRODUCTIONORNETWORKINGPERMITTEDWITHOUTLICENSEFROMIHS,ISO21940112016EFOREWORDISOTHEINTERNATIONALORGANIZATIONFORSTANDARDIZATIONISAWORLDWIDEFEDERATIONOFNATIONALSTANDARDSBODIESISOMEMBERBODIESTHEWORKOFPREPARINGINTERNATIONALSTANDARDSISNORMALLYCARRIEDOUTTHROUGHISOTECHNICALCOMMITTEESEACHMEMBERBODYINTERESTEDINASUBJECTFORWHICHATECHNICALCOMMITTEEHASBEENESTABLISHEDHASTHERIGHTTOBEREPRESENTEDONTHATCOMMITTEEINTERNATIONALORGANIZATIONS,GOVERNMENTALANDNONGOVERNMENTAL,INLIAISONWITHISO,ALSOTAKEPARTINTHEWORKISOCOLLABORATESCLOSELYWITHTHEINTERNATIONALELECTROTECHNICALCOMMISSIONIECONALLMATTERSOFELECTROTECHNICALSTANDARDIZATIONTHEPROCEDURESUSEDTODEVELOPTHISDOCUMENTANDTHOSEINTENDEDFORITSFURTHERMAINTENANCEAREDESCRIBEDINTHEISO/IECDIRECTIVES,PART1INPARTICULARTHEDIFFERENTAPPROVALCRITERIANEEDEDFORTHEDIFFERENTTYPESOFISODOCUMENTSSHOULDBENOTEDTHISDOCUMENTWASDRAFTEDINACCORDANCEWITHTHEEDITORIALRULESOFTHEISO/IECDIRECTIVES,PART2SEEWWWISOORG/DIRECTIVESATTENTIONISDRAWNTOTHEPOSSIBILITYTHATSOMEOFTHEELEMENTSOFTHISDOCUMENTMAYBETHESUBJECTOFPATENTRIGHTSISOSHALLNOTBEHELDRESPONSIBLEFORIDENTIFYINGANYORALLSUCHPATENTRIGHTSDETAILSOFANYPATENTRIGHTSIDENTIFIEDDURINGTHEDEVELOPMENTOFTHEDOCUMENTWILLBEINTHEINTRODUCTIONAND/ORONTHEISOLISTOFPATENTDECLARATIONSRECEIVEDSEEWWWISOORG/PATENTSANYTRADENAMEUSEDINTHISDOCUMENTISINFORMATIONGIVENFORTHECONVENIENCEOFUSERSANDDOESNOTCONSTITUTEANENDORSEMENTFORANEXPLANATIONONTHEMEANINGOFISOSPECIFICTERMSANDEXPRESSIONSRELATEDTOCONFORMITYASSESSMENT,ASWELLASINFOR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