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SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2004SAEInternationalAllrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:877-606-7323(insideUSAandCanada)Tel:724-776-4970(outsideUSA)Fax:724-776-0790Email:custsvc@sae.orgSAEWEBADDRESS:http://www.sae.orgSURFACEVEHICLERECOMMENDEDPRACTICEJ1122REV.OCT2004Issued1976-02Revised2004-10SupersedingJ1122JUL1988HelicalSprings:SpecificationCheckListsForeword—ThisDocumenthasalsochangedtocomplywiththenewSAETechnicalStandardsBoardformat.ReferenceswereaddedasSection2.SAEJ916wasreplacedwithTSB003.1.Scope—ThefollowingSAERecommendedPracticefurnishessampleformsforhelicalcompression,extensionandtorsionspringstoprovideauniformmethodforspecifyingdesigninformation.Itisnotnecessarytofillinallthedata,butsufficientinformationmustbesuppliedtofullydescribethepartandtosatisfytherequirementsofitsapplication.Fordetailedinformation,see“DesignandApplicationofHelicalandSpiralSprings-SAEHS795”,also“HelicalCompressionandExtensionSpringTerminology-SAEJ1121”.BothofthesedocumentsuseSI(metric)UnitsinaccordancewiththeprovisionsofSAETSB003,asdoesSAEJ1122.Here,however,theU.S.CustomaryUnits(in,lb,psi)havebeenaddedinparenthesesaftereachSIUnitfortheconvenienceoftheuserwhomustfurnishspecificationsonaprojectwhereallrequirementsarelistedinnon-metricterms.2.References2.1ApplicablePublications—Thefollowingpublicationsformapartofthespecificationtotheextentspecifiedherein.Unlessotherwiseindicated,thelatestrevisionofSAEpublicationsshallapply.2.1.1SAEPUBLICATIONS—AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001.SAEJ1121—HelicalCompressionandExtensionSpringTerminologySAEHS795—DesignandApplicationofHelicalandSpiralSpringsSAETSB003—RulesforSAEUseofSI(Metric)UnitsSAEJ1122RevisedOCT2004-2-TABLE1—CONVERSIONTABLEToConvertfromSIUnittoU.S.CustomaryUnit,DividebytheFactorToConvertfromU.S.CustomaryUnittoSIUnit,MultiplybytheFactorQuantitySIUnitFactorU.S.CustomaryUnitLengthmillimetermm25.4(Exactly)inchinAreasquaremm2millimeter645.16(Exactly)squareinchin2Masskilogramkg0.4535924pound-masslbmForce(orLoad)newtonN4.448222(1)1.4.448222=0.45359237×9.806650where9.806650=AccelerationofGravity“g”adoptedin1901byInternationalCommitteeonWeights&Mea-surespound-forcelbfMomentnewtonN·mmmillimeter112.9848poundinchlbf.inLinearSpringRatenewtonperN/mmmillimeter0.1751268poundperlbf/ininchTorsionalSpringRatenewtonmmN·mm/degperdegree112.9848poundinchlbf.in/degperdegreeStressmegapascalMPa0.006894757(2)2.0.006894757=4.4482216×0.001550003poundperpsisquareinchSAEJ1122RevisedOCT2004-3-FIGURE1—SAMPLEFORMFORHELICALCOMPRESSIONSPRINGSSAEJ1122RevisedOCT2004-4-FIGURE2—SAMPLEFORMFORHELICALEXTENSIONSPRINGSSAEJ1122RevisedOCT2004-5-FIGURE3—SAMPLEFORMFORHELICALTORSIONSPRINGSSAEJ1122RevisedOCT2004-6-3.Notes3.1MarginalIndicia—Thechangebar(l)locatedintheleftmarginisfortheconvenienceoftheuserinlocatingareaswheretechnicalrevisionshavebeenmadetothepreviousissueofthereport.An(R)symboltotheleftofthedocumenttitleindicatesacompleterevisionofthereport.PREPAREDBYTHESAECOILSPRINGSUBCOMMITTEEOFTHESAESPRINGCOMMITTEESAEJ1122RevisedOCT2004Rationale—ThisDocumenthasalsochangedtocomplywiththenewSAETechnicalStandardsBoardformat.ReferenceswereaddedasSection2.SAEJ916wasreplacedwithTSB003.RelationshipofSAEStandardtoISOStandard—Notapplicable.Application—ThefollowingSAERecommendedPracticefurnishessampleformsforhelicalcompression,extensionandtorsionspringstoprovideauniformmethodforspecifyingdesigninformation.Itisnotnecessarytofillinallthedata,butsufficientinformationmustbesuppliedtofullydescribethepartandtosatisfytherequirementsofitsapplication.Fordetailedinformation,see“DesignandApplicationofHelicalandSpiralSprings-SAEHS795”,also“HelicalCompressionandExtensionSpringTerminology-SAEJ1121”.BothofthesedocumentsuseSI(metric)UnitsinaccordancewiththeprovisionsofSAETSB003,asdoesSAEJ1122.Here,however,theU.S.CustomaryUnits(in,lb,psi)havebeenaddedinparenthesesaftereachSIUnitfortheconvenienceoftheuserwhomustfurnishspecificationsonaprojectwhereallrequirementsarelistedinnon-metricterms.ReferenceSectionSAEJ1121—HelicalCompressionandExtensionSpringTerminologySAEHS795—DesignandApplicationofHelicalandSpiralSpringsSAETSB003—RulesforSAEUseofSI(Metric)UnitsDevelopedbytheSAECoilSpringSubcommitteeSponsoredbytheSAESpringCommittee