AGMA 9002-C14-2014 Bores and Keyways for Flexible Couplings (Inch Series).pdf

1、ANSI/AGMA9002-C14ANSI/AGMA 9002-C14 (Revision of ANSI/AGMA 9002-B04) American National Standard Bores and Keyways for Flexible Couplings (Inch Series) AMERICAN NATIONAL STANDARD ANSI/AGMA 9002-C14 AGMA 2014 All rights reserved ii Bores and Keyways for Flexible Couplings (Inch Series) ANSI/AGMA 9002-

2、C14 Revision of ANSI/AGMA 9002-B04 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 St

3、andards 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 concerted effort be made towar

4、d 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 standa

5、rds. 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 Americ

6、an National Standards Institute. Requests for interpretation of this standard should be addressed to the American Gear Manufacturers Association. CAUTION NOTICE: AGMA technical publications are subject to constant improvement, revision or withdrawal as dictated by experience. Any person who refers t

7、o any AGMA Technical Publication should be sure that the publication is the latest available from the Association on the subject matter. Tables or other self-supporting sections may be referenced. Citations should read: See ANSI/AGMA 9002-C14, Bores and Keyways for Flexible Couplings (Inch Series),

8、published by the American Gear Manufacturers Association, 1001 N. Fairfax Street, Suite 500, Alexandria, Virginia 22314, http:/www.agma.org. Approved February 4, 2015. ABSTRACT This standard describes sizes and tolerances for straight and tapered bores and the associated keys and keyways, as furnish

9、ed in flexible couplings. The data in the standard considers commercially standard coupling bores and keyways, not special coupling bores and keyways that may require special tolerances. Published by American Gear Manufacturers Association 1001 N. Fairfax Street, Suite 500, Alexandria, Virginia 2231

10、4 Copyright 2014 by American Gear Manufacturers Association All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America ISBN: 978-1-61481-091

11、-9 American National Standard AMERICAN NATIONAL STANDARD ANSI/AGMA 9002-C14 AGMA 2014 All rights reserved iii Contents Foreword . v 1 Scope . 1 1.1 Application . 1 1.2 Exceptions . 1 2 Normative references. 1 3 Symbols and definitions . 1 3.1 Symbols . 1 4 Bore measurement and surface finish . 2 4.1

12、 Bore measurement 2 4.2 Bore surface finish 2 5 Straight (finished) bored hubs 2 5.1 Standard bores 2 5.1.1 Standard shaft-to-hub fits 2 5.1.2 Unspecified hub-to-shaft fits 4 5.2 Non-standard bores 4 5.3 Set screws . 4 6 Tapered bore hubs . 5 6.1 Typical tapered bores 5 6.2 Keyways 5 6.3 Tapered bor

13、e dimensional control requirements 5 6.4 Dimensioning of tapered bores . 5 7 Keys . 6 7.1 Key sizes . 6 7.1.1 Commercial . 6 7.1.2 Precision 6 7.1.3 Fitted . 6 8 Hub keyways 6 8.1 Classes of key-to-keyway fit 6 8.1.1 Commercial class 7 8.1.2 Precision class 7 8.1.3 Fitted class 7 8.2 Keyway sizes. 7

14、 8.3 Keyway dimensions and tolerances 7 8.3.1 Keyway width for square, rectangular and tapered keys, wkw. 7 8.3.2 Chord height, Ch8 8.3.3 Nominal keyway depth, hkw. 8 8.3.4 Dimension from top of keyway to opposite side of bore, T . 8 8.3.5 Maximum keyway offset tolerance, N 8 8.3.6 Maximum keyway le

15、ad, Lkw. 9 8.3.7 Keyway parallelism 9 8.3.8 Multiple keyway index tolerance, lkw. 9 8.4 Methods of measurement . 10 8.5 Finish of keyways 10 8.6 Fillet radii in keyways 10 Bibliography 28 AMERICAN NATIONAL STANDARD ANSI/AGMA 9002-C14 AGMA 2014 All rights reserved iv Annexes Annex A Straight bore ins

16、pection methods . 12 Annex B Tapered bore inspection procedure and plug gauge accuracy requirements 13 Annex C Recommended design practice for tapered shafts used with flexible couplings . 16 Annex D Keyway measurement 18 Annex E Coupling hub bores required to obtain ANSI B4.1, Preferred limits and

17、fits for cylindrical parts, FN2 class interference fits with ANSI/AGMA 9002-C14 recommended shaft tolerances 24 Annex F Class 2 clearance fit . 26 Annex G Transitional fits . 27 Tables Table 1 - Symbols . 2 Table 2 - Hub bore to shaft fits for cylindrical shaft in straight bore hub (inches) . 3 Tabl

18、e 3 - Standard tolerances of finished straight bores over 18 inch diameter for interference fit . 4 Table 4 - Key size and tolerance, inch 6 Table 5 - Recommended hub keyway, inch 7 Table 6 - Maximum keyway lead values . 9 Table 7 - Multiple keyway index tolerances 10 Table 8 - Values for keyway fil

19、let radius and suggested key chamfer 11 Figures Figure 1 - Tapered bore requirements 5 Figure 2 - Tapered bore drawing dimensions . 5 Figure 3 - Keyway dimensions 8 Figure 4 - Keyway offset . 9 Figure 5 - Keyway lead . 9 Figure 6 - Keyway parallelism . 10 Figure 7 - Multiple keyway index . 10 Figure

20、 8 - Keyway fillet radius and key chamfer detail . 11 AMERICAN NATIONAL STANDARD ANSI/AGMA 9002-C14 AGMA 2014 All rights reserved v Foreword The foreword, footnotes and annexes, if any, in this document are provided for informational purposes only and are not to be construed as a part of ANSI/AGMA 9

21、002-C14, Cylindrical Bores and Keyways for Flexible Couplings (Inch Series). ANSI/AGMA 9002-A86 consolidated and superseded the information found in AGMA 511.02, Bore and Keyway Sizes for Flexible Couplings, AGMA 512.03, Keyways for Flexible Couplings, and AGMA 513.01, Taper Bores for Flexible Coupl

22、ings. The intent of ANSI/AGMA 9002-A86 was to offer designers and users standard dimensions and tolerances for inch bores, keys and keyways for flexible couplings. In general, the dimensions contained in ANSI/AGMA 9002-A86 represented the dimensions and tolerances used within the industry for pre-en

23、gineered couplings. It proved useful in establishing dimensions and tolerances for custom engineered coupling products. ANSI/AGMA 9002-A86 was developed after intensive study of previously existing standards, literature, design practices and manufacturing procedures for bores and keyways of unmounte

24、d flexible coupling hubs and similar components. The study revealed that much of the data contained in previously existing standards and specifications was predicated upon practice and procedures that pertained more to keyways in the shaft members than to keyways in coupling hub bores. The informati

25、on contained with ANSI/AGMA 9002-A86 did not necessarily agree with some commonly used specifications. ANSI/AGMA 9002-A86 was based upon the design criteria related to bores and keyways in coupling hubs that had evolved over many years of successful industry practice. ANSI/AGMA 9002-A86 presented pe

26、rtinent data on dimensions, tolerances, and sizes for straight bores, tapered bores, keys and keyways for unmounted industrial flexible couplings. Decimal equivalents of fractions were shown to a maximum of four decimal places and were not meant to imply tolerances. Inspection methods for tapered bo

27、res and keyways were included in the appendices. The appendices also included the recommended design practice for tapered shafts for use with flexible couplings. ANSI/AGMA 9002-B04 supersedes the information from ANSI/AGMA 9002-A86, Bores and Keyways for Flexible Couplings (Inch Series). This revise

28、d version of the standard includes an extension of the bore sizes (through 18 inches). It has also been rearranged and clarified to make it easier to use. One annex was broken into two annexes to clarify the information presented. Two new annexes were added: “Straight bore inspection methods” and “C

29、oupling hub bores required to obtain ANSI B4.1 “Preferred Limits and Fits for Cylindrical Parts” FN2 class interference fits with AGMA 9002-B04 recommended shaft tolerances”. In ANSI/AGMA 9002-C14, the “measurement of bores” section was moved from an annex to clause 4, now becoming a part of the sta

30、ndard. Bores are to be measured prior to cutting the keyway. A discussion and a new annex G is now included covering transitional fits bridging the gap between clearance and interference fits. The first draft of ANSI/AGMA 9002-C14 was made in April, 2011. It was approved by the AGMA membership in Ma

31、y 2014. It was approved as an American National Standard on February 4, 2015. Suggestions for improvement of this standard will be welcome. They may be submitted to techagma.org. AMERICAN NATIONAL STANDARD ANSI/AGMA 9002-C14 AGMA 2014 All rights reserved vi PERSONNEL of the AGMA Flexible Couplings C

32、ommittee Chairman: Glenn Pokrandt Rexnord Coupling Operations Group (Retired) Vice Chairman: Todd Schatzka Rexnord Technical Services ACTIVE MEMBERS T.C. Glasener . Emerson Industrial Automation B.M. Greenlees A-C Equipment Services Corporation C.M. Hatseras KTR Corporation D.W. Hindman Rexnord Coup

33、ling Operations Group D.R. Lyle. Ameridrives Gear Coupling Operations S. McChesney Reich USA Corporation M. McGinnity Emerson Industrial Automation L. Riggs Emerson Industrial Automation J. Sherred . Ameridrives Gear Coupling Operations E. Wilson Lovejoy, Inc. AGMA 2014 All rights reserved 1 AMERICA

34、N NATIONAL STANDARD ANSI/AGMA 9002-C14 American National Standard - Bores and Keyways for Flexible Couplings (Inch Series) 1 Scope This standard presents inch dimensions, tolerances, and sizes for straight bores, tapered bores, single keys and keyways for unmounted industrial flexible couplings. The

35、 keys are square or rectangular. This specification includes index tolerances for multiple keyways. Inspection methods for straight and tapered bores and keyways are included in the annexes. The annexes also include the recommended design practice for tapered shafts for use with flexible couplings.

36、1.1 Application This standard is applicable to couplings as defined in ANSI/AGMA 9009-D02, Flexible Couplings - Nomenclature for Flexible Couplings, with inch bores and keyways. 1.2 Exceptions This standard does not apply to: - couplings attached to shafts without keys, see ANSI/AGMA 9003-B08; - cou

37、plings attached to shafts with tapered bushings or keyless shaft locking devices; - shafts and bores with tapered keys; - inch bores with metric keyways; - metric bores with inch keyways; - metric bores with metric keyways; or - shaft keyseat tolerances. See ANSI/AGMA 9112-B14 for metric bores with

38、metric keyways. 2 Normative references The following standard contains provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreem

39、ents based on this American National Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. ANSI/AGMA 9009-D02, Flexible Couplings - Nomenclature for Flexible Couplings 3 Symbols and definitions 3.1 Symbols The symbols used in this

40、 standard are shown in Table 1. NOTE: The symbols and terms contained in this document may vary from those used in other AGMA standards. Users of this standard should assure themselves that they are using these symbols and terms in the manner indicated herein. AMERICAN NATIONAL STANDARD ANSI/AGMA 90

41、02-C14 AGMA 2014 All rights reserved 2 Table 1 - Symbols Symbol Description Units Where first used ChChord height at keyway inch Figure 3 DbCylindrical bore diameter inch Figure 3 DleLarge end diameter of hub bore inch 6.3 DgGage line diameter for hub bore inch Figure 2 DseSmall end diameter of hub

42、bore inch 6.3 HkNominal height of key inch Figure 3 hkwKeyway depth inch Figure 3 IkwMultiple keyway index tolerance inch 8.3.8 LkwMaximum keyway lead inch 8.3.6 l Axial length of the tapered feature inch 6.3 N Maximum keyway offset tolerance inch 8.3.5 r Keyway or keyseat fillet radius inch Table 8

43、 T Dimension from top of keyway to opposite side of bore inch Figure 3 TPF Taper per foot of length on diameter in/ft 6.3 tcKeyway top clearance plus depth tolerance inch Table 5 wkKey width inch Table 5 wkwKeyway width inch Figure 3 Included angle degrees 6.3 4 Bore measurement and surface finish 4

44、.1 Bore measurement The hub may distort when the keyway is machined; therefore, the bore diameter must be checked prior to cutting the keyway. See annex A for straight bore inspection methods and annex B for tapered bore methods. 4.2 Bore surface finish Machined finish bores normally have a surface

45、finish of 125 Ra microinches. For finishes better than 125 Ra microinches, additional processes may be necessary. Keyless fit bores require an improved surface finish, see ANSI/AGMA 9003-B08. 5 Straight (finished) bored hubs 5.1 Standard bores Standard finished bore sizes and tolerances are shown in

46、 Table 2. Keyway tolerances are in accordance with clause 8. For standard tolerances of finished straight bores over eighteen inch diameter, see Table 3. NOTE: A bore size in Table 2 may or may not be a stock bore size for each coupling manufacturer. 5.1.1 Hub bore to shaft fit Hub bore to shaft fit

47、 is the responsibility of the purchaser. Table 2 shows the resulting fits of the preferred shaft/bore combinations. 5.1.2 Standard hub bore to shaft fits This standard covers clearance fits and interference fits as shown in Table 2. The type of hub bore to shaft fit selected is dependent on the type

48、 of coupling and service in which the coupling will be used. If a particular type of fit is desired, it shall be specified by the purchaser of the coupling. AMERICAN NATIONAL STANDARD ANSI/AGMA 9002-C14 AGMA 2014 All rights reserved 3 Table 2 - Hub bore to shaft fits for cylindrical shaft in straigh

49、t bore hub (inches) Nominal bore1)diameters Shaft tolerance2)Clearance fit3), 4)Interference fits From To (Incl.) Bore tolerance Fit Bore tolerance Fit 0.4375 1.5000 +0.0000 -0.0005 +0.0010 -0.0000 +0.0015 +0.0000 -0.0005 -0.0010 -0.0000 -0.0010 1.5000 2.0000 +0.0000 -0.0010 +0.0010 -0.0000 +0.0020 +0.0000 -0.0010 -0.0020 -0.0000 -0.0020 2.0000 3.0000 +0.0015 -0.0000 +0.0025 +0.0000 3.0000 4.0000 -0.0015 -0.0030 -0.0005 -0.0030 4.0000 5.0000 -0.0020 -0.0035 -0.0010 -0.0035 5.0000 6.5000 -0.0025 -0.0040 -0.0015 -0.0040 6.5000 7.0000 - - - - -0.0025 -0.0