ABMA 9-1990 R2000
|
ID： |
D41B95D6C01E48C49E72D6225043EA81 |
|
文件大小(MB)： |
1.23 |
|
页数： |
25 |
|
文件格式： |
|
|
日期： |
2024-6-22 |
|
购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
■ 0a?lD73 0001433 77b 丒,ABMA COPYRIGHT NOTICE,Copyright?American Bearing Manufacturers Association, Inc., 1990,These materials have been prepared by the American,Bearing Manufacturers Association, Inc. However the,information contained in these materials has not been,independently verified by the American Bearing,Manufacturers Association or Information Handling,Services, Inc. Neither organization warrants or assumes,any liability for the accuracy or completeness of these,materials.,AFBMA 5 50 ■ 0671073 0001154 758 ,(AMERICAN NAHONAl),WiiSTANQARDBiil,ANSI/AFBMA,Std 9-1990,(Revision of,ANSI/AFBMA,Std. 9-1978),AMERICAN NATIONAL STANDARD,AFBMA STANDARD,LOAD RATINGS AND FATIGUE LIFE,FOR BALL BEARINGS,Sponsor,The Anti-Friction Bearing,Manufacturers Association, Inc.,Approved July 17, 1990,American National Standards Institute, Inc.,AFBMA 1 HD ■ 0671073 。D01155 6耿.,American National Standard,Approval of an American National Standard requires verification by ANSI that the,requirements for due process, consensus, and other criteria for approval have been met,by the standards developer.,Consensus is established when, in the judgment of the ANSI Board of Standards Review,substantial agreement has been reached by directly and materially affected interests.,Substantial agreement means much more than a simple majority, but not necessarily,unanimity. Consensus requires that all views and objections be considered, and that a,concerned effort be made toward their resolution.,The use of American National Standards is completely voluntary; their existence does,not in any respect preclude anyone, whether he has approved the standards or not, from,manufacturing, marketing, purchasing, or using products, processes, or procedures not,conforming to the standards.,The American National Standards Institute does not develop standards and will in no,circumstances give an interpretation of any American National Standard. Moreover, no,person shall have the right or authority to issue an interpretation of an American National,Standard in the name of the American National Standards Institute. Requests for interpretations,should be addressed to the secretariat or sponsor whose name appears on the,title page of this standard.,CAUTION NOTICE: This American National Standard may be revised or withdrawn,at any time. The procedures of the American National Standards Institute require that,action be taken to reaffirm, revise, or withdraw this standard no later than five years,from the date of approval. Purchasers of American National Standards may receive,current information on all standards by calling or writing the American National Standards,Institute.,Published by,The Anti-Friction Bearing Manufacturers Association, Inc.,1101 Connecticut Ave. N.W., Suite 700,Washington, D.C, 2003￠,Copyright 1990 by The Anti-Friction Bearing Manufacturers Association, Inc,AFBMA 弓 TO 0S71073 000115L)520,FOREWORD,(This Foreword is not a part of American National Standard, Load Ratings,and Fatigue Life for Ball Bearings.),This revision of ANSI/AFBMA Standard 9 has as its principal features:,1)The use of an increased calculated stress at the center of the most heavily,loaded rolling element/raceway contact which results in a total permanent,deformation of 0.0001 of the rolling element diameter; and 2) the utilization,of the factor fcm which depends on the geometry of the bearing components,the accuracy to which the various components are made and contemporary,normally used material and its manufacturing quality.,This standard is in close conformity with ISO 76-1987 (Rolling bearings-,Static load ratings) and with ISO DIS 281-1989 (Rolling bearings-Dynamic,load ratings and rating life). Any significant differences, where they occur,are indicated in this standard.,The principal difference between this standard and ISO DIS 281 is the use,of the fcm factor which combines the fc and bm factors used in ISO 281.,Dynamic load ratings calculated for the same bearing should have the same,value, however, when following either this or the ISO Standard unless noted,otherwise in this standard.,The life adjustment factor for special bearing properties, a2l intended for,use with capacities calculated in accordance with previous revisions of this,Standard may not be valid for use with the current capacities. The present,fcm values incorporate material and processing improvements which were,previously adjusted by means of the a2 factor.,Copies of ISO Standards concerning Rolling Contact Bearings (Ball and,Roller Bearings) are available from the American National Standards Institute.,Suggestions for the improvement of this standard gained from its……
……