TheAmericanSocietyofMechanicalEngineersANAMERICANNATIONALSTANDARDSTEELBUSHEDROLLERLESSCHAINSSPROCKETTEETHATTAIHMENTS,ANDASMEB29.12M-1997[RevisionofANSIIASMEB29.12M-1983(R1988)lREAFFIRMED2018DateofIssuance:September1,1997ThisStandardwillberevisedwhentheSocietyapprovestheissuanceofanewedition.Therewillbenoaddendaorwritteninterpretationsofthere-quirementsofthisStandardissuedtothisEdition.ASMEistheregisteredtrademarkofTheAmericanSocietyofMechanicalEngineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheConsensusCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicre-viewandcommentwhichprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large,ASMEdoesnot"approve,""rate,"or"endorse"anyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureany-oneutilizingastandardagainstliabilityforinfringementofanyapplicableLettersPatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatthedetermi-nationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentativek)orpersonk)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.ASMEacceptsresponsibilityforonlythoseinterpretationsissuedinaccordancewithgov-erningASMEproceduresandpolicieswhichprecludetheissuanceofinterpretationsbyindi-vidualvolunteers.Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.TheAmericanSocietyofMechanicalEngineers345East47thStreet,NewYork,NY10017Copyright01997byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAl...
