1、A M E R I C A N N A T I O N A L S T A N D A R D General Purpose Tapered and Reduced Cross Section Retaining Rings ANSI B27.7-1977 METRIC REAFFIRMED 1999 FOR CURRENT COMMITTEE PERSONNEL PLEASE SEE ASME MANUAL AS-11 SECRETARIAT SOCIETY OF AUTOMOTIVE ENGINEERS THE AMERICAN SOCIETY OF MECHANICAL ENGINEE
2、RS.PUBLISHED BY T H E A M E R I C A N S O C I E T Y O F M E C H A N I C A L E N G I N E E R S United Engineering Center 345 East 47th Street New York,N.Y.1001 7 Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No furth
3、er reproduction or distribution is permitted.Uncontrolled when printed.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.Copyright 0 1977 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Righ
4、ts Resewed Printed in USA.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.FOREWORD American National Standards Committee B27 for the stand
5、ardization of plain and lock washers was organized i n March 1926,as Sectional Committee B27 under the aegis of the American Standards Associa-tion(later the United States of America Standards Institute and,as of October 6,1969,the American National Standards Institute Inc.),with the Society of Auto
6、motive Engineers and The American Society of Mechanical Engineers as joint secretariats.In 1950,this Committee has been designated responsibility for standardization of washers and machine rings.At a meeting of ANSI B27 Standards Committee held on February 4,1971 it was recommended to the secretaria
7、ts(ASME and SAE)that subcommittee 1,2 and 4 on washers be merged into ANSI B18 Stan-dards Committee and that Subcommittee 3 on retaining rings become a separate Standards Committee re-taining the B27 designation.This change was subsequently approved by ANSI.Formation of Subcommittee 1 on tapered and
8、 reduced section retaining rings was authorized by Stan-dards Committee B27 at its meeting on October 15,1974.At this meeting,it was decided that no further effort should be expended on inch dimensional products and Subcommittee 1 was assigned the respon-sibility of preparing American metric standar
9、ds for tapered and reduced section retaining rings.Subcommittee 1 prepared a draft proposal,General Purpose Tapered and Reduced Cross Section Retain-ing Rings which was balloted on June 16,1975.At a subcommittee meeting held on February 17,1976 results from the letter ballot was reviewed.The proposa
10、l was accepted by the subcommittee and presented to the B27 Standards Committee at its May 7,1976 meeting.At that mee.ting a letter ballot of the entire committee was authorized.The Standard was duly approved by the committee and its sponsors and sub-mitted to the American National Standards Institu
11、te for designation as an American standard.This was granted on October 20,1977.iii 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.AMERICA
12、N NATIONAL STANDARDS COMMITTEE B27 Standardization of Retaining Rings,Retaining Clips and Similar Devices(The following is the roster of the Committee at the time of approval of this standard)OFFICERS J.B.Levy,Chairman R.L.Berkbigler,Vice-Chairman Kurt Wessely,Secretary COMMITTEE PERSONNEL AMERICAN
13、SOCIETY OF MECHANICAL ENGINEERS,THE J.B.Levy,General Electric Company,Schenectady,New York E.R.Friesfh,alternate,Deere&Company,Moline,Illinois ASSOCIATION OF AMERICAN RAILROADS J.H.Bean,Association of American Railroads,Chicago,Illinois FARM&INDUSTRIAL EQUIPMENT INSTITUTE A.G.Nauta,International Har
14、vester Company,Hinsdale,Illinois NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION F.V.Kupchak,Westinghouse Electric Corporation,Pittsburgh,Pennsylvania J.6.Levy,General Electric Corporation,Schenectady,New York R.L.Mancini,alternare,National Electrical Manufacturers Association,New York,New York SOCIET
15、Y OF AUTOMOTIVE ENGINEERS R.L.Berkbigler,Ramsey Corporation,St.Louis,Missouri J.Long,General Motors Technical Center,Warren,Michigan SPRING MANUFACTURERS ASSOCIATION,INC.W.L.Abrams,Precision Spring Corporation,Detroit,Michigan U.S.DEPARTMENT OF THE ARMY R.C.Englemann,Liaison,Rock Island Arsenal,Rock
16、 Island,Illinois 0.M.Kelley,alternate,Rock Island Arsenal,Rock Island,Illinois U.S.DEPARTMENT OF THE NAVY J.R.Ruff,Department of the Navy,Naval Ship Systems Command,Washington,D.C.INDIVIDUAL COMPANIES B.G.Allen,Pitney Bowes,Stamford,Connecticut Joseph Alfman,Waldes Kohinoor,Incorporated,Long Island City,New York P.W.Dulk,The Singer Company,Elizabeth,New Jersey John Hiddlesfone,Anderton Darby,Incorporated,Clifton,New Jersey Daniel Frailly,Eaton Corporation,Massillon,Ohio P.M.Gladstone,The Nationa
