1997_2009.pdf

REAFFIRMED 2009FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgThe American Society of Mechanical Engineers A N A MERIC A N N ATION AL STA ND A R D HEAVY DUTY OFFSET SIDEBAR POWER TRANSMISSION ROLLER CHAINS AND SPROCKET TEETH ASME 829.1 OM-1997(Revision of ASME 820.1OM-1004)Date of Issuance:October 20,1997 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 requirements 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 review and comment which provides an opportunity for additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does not uapprove,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 anyone 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 determination of the validity of any such patent rights,and the risk of the infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)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 governing ASME procedures and policies which preclude the issuance of interpretations by individual 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 1997 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.FOREWORD(This Foreword is not part of ASME B29.10M-1997.)Chains of the type covered by this Standard were introduced in the United States late in the 19th Century.As their popularity increased,the number of chains and manufacturers grew.As one manufacturer developed a successful size chain,or family of chains,others soon duplicated it and a large number of chains came into being.In spite of efforts at standardization,the Corps of Engineers,United States Army,found during the Korean incident of 1950-53 that lack of adequate standardization of power transmission chains still resulted in the incapacitation of many cranes and shovels.For this reason,the Corps of Engineers requested the Society of Automotive Engineers to expand the scope of ASA Sectional Committee B29 to cover this group of chains.On May 13,1956,the Corps of Engineers request was approved by the ASA B29 Committee and the ASA B29.l0 Subcommittee was formed.Upon approval by the American Standards Association in April 1962;the first standard for ASA B29.10 chains and sprockets was published.The Standard described the physical dimensions of the chain components and sprockets,and defined the minimum static properties for the chains.In 1970,this Standard was revised to include Drive Selection information in a Supplementary Section and to convert fractions to decimal-inch,and include metric dimensions in SI Units.In September 1962,the Engineering Steel Chain Division of the ACA began a research program to develop ratings for the ANSI B29.10 chains.Capacity information on the smaller B29.l chains already developed in research programs sponsored by the Roller Chain Division of the ACA was made available to the Engineering Steel Chain Division.Member companies contributed information from their own research programs.Special dynamic test equipment was built to enable obtaining wear and capacity data on very large chains.The horsepower capacities published as supplementary information in this Standard resulted from this combined research effort;they are considerably higher than previous!y accepted by the industry.At all speeds and for all sprocket sizes,the capabilities of ANSI B29.10 chain drives exceeded those previously accepted by the industry.This Standard was approved as an American National Standard on December 27,1972.The 1981 revision included updating to the current ANSI standards format covering chains and sprockets.In the process of updating,the supplemental information(Appendices A and B)was reviewed and found to be inadequate with respect to selection information.The information was incomple