ASME_B29-100-2002.pdf

Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:May 12,2003This Standard will be revised when the Society approves the issuance of a new edition.There willbe no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME Web site under the Committee Pages at http:/www.asme.org/codes/as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2003 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivStandards Committee Roster.viiCorrespondence With the B29 Committee.viiiASME B29.1Precision Power Transmission Roller Chains,Attachments,andSprockets.1ASME B29.3Double-Pitch Power Transmission Roller Chains and Sprockets.51ASME B29.4Double-Pitch Conveyor Roller Chains,Attachments,and Sprockets.72iiiCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDThe B29 Standards Committee agreed to propose a draft standard to consolidate and revisethe following three chain standards:ASME B29.1M,Precision Power Transmission Roller Chains,Attachments,and Sprockets;ASME B29.3M,Double-Pitch Power Transmission Roller Chains andSprockets;andASMEB29.4M,Double-PitchConveyorRollerChains,Attachments,andSprockets.ThenewstandardwasdesignatedASMEB29.100-2002andwasapprovedasanAmericanNationalStandard on April 3,2002.B29.1.The original design of precision roller chain dates back to the late 1890s,although varioustypes of drive chains have been in use for centuries.The early automobiles used roller chainextensively as the final drive.The industrial use for roller chain grew substantially,resulting inthe desirability of standardization.The perfected American Standard Chain of today has evolvedto meet the demand for ever-increasing horsepower and higher speeds,as well as accurate timing.In 1913 the Society of Automotive Engineers published formulas for calculating the roller chainlength,sprocket tooth profiles,and other important design criteria.Recommendations from theRoller Chain Committee of the American Society of Mechanical Engineers followed in 1917 withdimensional standards for the various components and assemblies.Early in 1920,through thecooperation of these two groups,roller chain standards were formulated and recommended foracceptancebyindustry.Theprogresswasfollowedin1921byorganizationofasprocketcommitteeof the American Gear Manufacturers Association.ASA Sectional Committee B29,Transmission Chain,Sprockets,and Cutters,was organized in1924 by the American Standards Association with ASME,AGMA,and SAE as sponsors.Asubcommittee on roller chain was established to study modern practices of roller chain manufac-t