1、Oil Field Chain and Sprockets API SPECIFICATION 7FEIGHTH EDITION,NOVEMBER 2010EFFECTIVE DATE:MAY 1,2011 ERRATA,MAY 2013REAFFIRMED,APRIL 2016Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and regulat
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4、y be used by anyone desiring to do so.Every effort has been made by the Institute to assure theaccuracy and reliability of the data contained in them;however,the Institute makes no representation,warranty,orguarantee in connection with this publication and hereby expressly disclaims any liability or
5、 responsibility for loss ordamage resulting from its use or for the violation of any authorities having jurisdiction with which this publication mayconflict.API publications are published to facilitate the broad availability of proven,sound engineering and operatingpractices.These publications are n
6、ot intended to obviate the need for applying sound engineering judgmentregarding when and where these publications should be utilized.The formulation and publication of API publicationsis not intended in any way to inhibit anyone from using any other practices.Any manufacturer marking equipment or m
7、aterials in conformance with the marking requirements of an API standardis solely responsible for complying with all the applicable requirements of that standard.API does not represent,warrant,or guarantee that such products do in fact conform to the applicable API standard.Users of this Specificati
8、on should not rely exclusively on the information contained in this document.Sound business,scientific,engineering,and safety judgment should be used in employing the information contained herein.All rights reserved.No part of this work may be reproduced,translated,stored in a retrieval system,or tr
9、ansmitted by any means,electronic,mechanical,photocopying,recording,or otherwise,without prior written permission from the publisher.Contact the Publisher,API Publishing Services,1220 L Street,NW,Washington,DC 20005.Copyright 2010 American Petroleum InstituteForewordNothing contained in any API publ
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11、atent.Shall:As used in a standard,“shall:denotes a minimum requirement in order to conform to the specification.Should:As used in a standard,“should”denotes a recommendation or that which is advised but not required in orderto conform to the specification.This document was produced under API standar
12、dization procedures that ensure appropriate notification andparticipation in the developmental process and is designated as an API standard.Questions concerning theinterpretation of the content of this publication or comments and questions concerning the procedures under whichthis publication was de
13、veloped should be directed in writing to the Director of Standards,American PetroleumInstitute,1220 L Street,NW,Washington,DC 20005.Requests for permission to reproduce or translate all or any partof the material published herein should also be addressed to the director.Generally,API standards are r
14、eviewed and revised,reaffirmed,or withdrawn at least every five years.A one-timeextension of up to two years may be added to this review cycle.Status of the publication can be ascertained from theAPI Standards Department,telephone(202)682-8000.A catalog of API publications and materials is published
15、annually by API,1220 L Street,NW,Washington,DC 20005.Suggested revisions are invited and should be submitted to the Standards Department,API,1220 L Street,NW,Washington,DC 20005,standardsapi.org.iiiContentsPageIntroduction.vi1Scope.12Normative References.13Roller Chain.13.1Chain Designation.13.2Heav
16、y Series Chains.13.3Dimensions .23.4Chain Length Tolerance.23.5Tensile Strength.23.6Preloading.33.7Minimum Press-out Force.33.8Minimum Dynamic Strength.53.9Marking Requirements.5Annex A(informative)Recommended Practice for Installation,Lubrication,and Maintenance of Roller Chain Drives.6Annex B(informative)Sprockets for Roller Chain.25Annex C(informative)Use of the API Monogram by Licensees.27Bibliography.30Figures1Chain Assembly.22Single and Multiple Chain Assemblies.2A.1Align Shafts.7A.2Align