1997_2018.pdf

The American Society of Mechanical Engineers A N A M E R I C A N N A T I O N A L S T A N D A R D STEEL BUSHED ROLLERLESS CHAINS SPROCKET TEETH ATTAIHMENTS,AND ASME B29.12M-1997 Revision of ANSIIASME B29.12M-1983(R1 988)l REAFFIRMED 2018Date of Issuance:September 1,1997 This Standard will be revised when the Society approves the issuance of a new edition.There will be no addenda or written interpretations of the re-quirements of this Standard issued to this Edition.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 National Standards.The Consensus Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate.The proposed code or standard was made available for public re-view and comment which provides an opportunity for additional public input 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 any items mentioned in this document,and does not undertake to insure any-one utilizing a standard against liability for infringement of any applicable Letters Patent,nor assume any such liability.Users of a code or standard are expressly advised that the determi-nation of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representativek)or personk)affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations issued in accordance with gov-erning ASME procedures and policies which preclude the issuance of interpretations by indi-vidual volunteers.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 Engineers 345 East 47th Street,New York,NY 10017 Copyright 0 1997 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in USA.FOREWORD(This Foreword is not part of ASME B29.12M-1997.)Chains of the type covered by this Standard were introduced early in the 20th century.The chains met with considerable success on material conveyors and elevators,and manufacturers developed and marketed many sizes and types in the next several years.The American Sprocket Chain Manufacturers Association (now the American Chain Association)recognized the need for standards which would provide for interchangeability by intercoupling chains of various manufacture.In November 1960,a working group of produc-ers of the bushed rollerless chains was formed to accomplish standardization.This Standard is the result of the work of that group.This Standard was presented to the USA (now ANSI)Standards Committee B29 on December 12,1967,and,upon approval by the USA Standards Institute(now American National Standards Institute,Inc.),on October 18,1968,was adopted and published.The 1974 revision included minor changes in metric units and the addition of caution notes to Table 1.To facilitate the use of this Standard in the international market,the metric equivalents of all dimensions are given.The current revision includes the addition of chain numbers S-856,S-857,S-859,and S-864 and attachments K-24,K-3,K-35,K-44,and K-443 for these chains.Also added is minimum bolt hole diameter required for the bolt diameter for a particular attachment.The Minimum Ultimate Tensile Strength definition(para.2.1)has also been modified.This revision was approved by the American National Standards Institute,Inc.,on March 25,1997.iii ASME STANDARDS COMMllTEE B29 Chains,Attachments,and Sprockets for Power Transmission and Conveying(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERS C.B.Norberg,Chair R.H.Uttke,Vice Chair J.L.Wright,Vice Chair K.Wessely,Secretary COMMllTEE PERSONNEL E.B.Beardslee,Beardslee Transmission Equipment Co.L.E.Hampel,Allied-Locke Industries,Inc.J.M.Lewis,Webster Industries,Inc.D.Moore,Jeffrey Chain C.E.Norberg V.D.Petershack R.A.Reinfried,Conveyor Equipment Manufacturers Association K.J.Smith,Drives,Inc.R.H.Uttke,Rexnord,Inc.J.L.Wright,Diamond Chain Co.D.N.Zwiep,Worcester Polytechnic Institute J.Kana,Alternate,U.S.Tsubaki,Inc.C.McDonald,Alternate,Jervis 6.Webb Co.V.Foreword.111 CommitteeRoster.v.1 Nomenclature 1 3 Chain Dimensions 3 2 General Chain Proportions and Designations.1 4 Attachment Dimensions.6 5 SprocketToothFo rm.14.Figures 1 Steel Bushed Rollerless Chain.2 2 Steel Bushed Rollerless Chain Nomenclature.2 3 SprocketToothForm.14 Tables 1 General Chain Dimensions.M.U.T.S.,Strand Length.and 2 Maximum an