2002_2021.pdf

ASME B29.27-2002SINGLE-PITCH ANDDOUBLE-PITCH HOLLOWPIN CONVEYOR CHAINSAND ATTACHMENTSA N A M E R I C A N N A T I O N A LS T A N D A R DASME B29.27-2002SINGLE-PITCH ANDDOUBLE-PITCH HOLLOWPIN CONVEYOR CHAINSAND ATTACHMENTSA N A M E R I C A N N A T I O N A LS T A N D A R DREAFFIRMED 2016REAFFIRMED 2016REAFFIRMED 2021Intentionally left blank AN AMERICAN NA TIONALST ANDARDSINGLE-PITCH ANDDOUBLE-PITCH HOLLOWPIN CONVEYOR CHAINSAND ATTACHMENTSASME B29.27-2002Date of Issuance:August 7,2002This Standard will be revised when the Society approves the issuance of anew edition.There will be no addenda issued to this Edition.ASME will issue written replies to inquiries concerning interpretation oftechnical aspects of this Standard.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 forAmerican National Standards.The Standards Committee that approved the code or standardwas balanced to assure that individuals from competent and concerned interests have had anopportunity to participate.The proposed code or standard was made available for public reviewandcommentwhichprovidesanopportunityforadditionalpublicinputfromindustry,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 inconnection withany itemsmentioned inthis document,and doesnot undertaketo insureanyoneutilizing a standard against liability for infringement of any applicable letters patent,nor assumeany such liability.Users of a code or standard are expressly advised that determination of thevalidity of any such rights,and the risk of infringement of such rights,is entirely their ownresponsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not tobe interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued inaccordance with established the ASME procedures and policies,which precludes the issuanceof 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 2002 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.CONTENTSForeword.ivCommittee Roster.vCorrespondence With B29 Committee.vi1Scope.12Hollow Pin Chains.13Sprockets.3Figures1 Single-Pitch Connecting Link.12 Double-Pitch Connecting Link.13 Double-Pitch Hollow Pin Chain With Small Rollers.24 Double-Pitch Hollow Pin Chain With Large Rollers.25 Single-Pitch Hollow Pin Chain.26 Single-Pitch Pin Link.37 Double-Pitch Pin Link.38 Double-Pitch Roller Link With Large Rollers.39 Double-Pitch Roller Link With Small Rollers.310 Single-Pitch Roller Link.311 General Chain Dimensions.5Table1General Chain Dimensions,Limiting Dimensions for Interchangeability,Measuring Loads,and Ultimate Tensile Strengths.4iiiFOREWORDFor many years roller chain manufacturers furnished substantial volumes of a limitedseries of hollow pin chains for specific conveying applications.Such chains usually arerollerless bushing chains having cylindrical pins.The pin bores are essentially the same asthe bushing bores for equivalent pitch chains in ASME B29.1 or ASME B29.4.The bushing,or roller,diameters and width are such that the single-pitch chains operate on ASME B29.1sprockets and the double-pitch chains operate on ASME B29.4 sprockets.These chains areoften used in parallel strands with detachable cross-rods fitted through the pin bores of thetwo parallel strands of chain.These chains sometimes are assembled with modified design attachment pin link platesor roller link plates to adapt the chains to more versatile use in conveying operations.Over the years,hollow pin chains became widely used and many manufacturers offeredthem.About 1990,it was suggested by the ASME B29 Committee that a standard forthese chains was needed.In 1995,the Roller Chain Technical Committee of the AmericanChain Association established a subcommittee to develop such a standard.Customary inch-pound units were used in tabulating dimensional information in thisstandard.Additionally,metric conversions of those units,in accordance with ASME GuideSI-1,ASME Orientation and Guide for Use of SI(Metric)Units,are also provided.This Standard was approved by the American National Standards Institute on March20,2002.ivASME B29 COMMITTEEChains,Attachments,and Sprockets for PowerTransmission and Conveying(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERSJ.L.Wright,ChairC.G.Springman,Vice ChairM.Lo,SecretaryCOMMITTEE PERSONNELW.C.Hall,Ramsey Products Corp.L.E.Ha