AGMA 9103-C17-2017 Flexible Couplings C Keyless Fits (Metric Edition).pdf

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1、ANSI/AGMA 9103-C17 ANSI/AGMA 9103-C17 (Revision of ANSI/AGMA 9103-B08) American National Standard Flexible Couplings Keyless Fits (Metric Edition) AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 AGMA 2017 All rights reserved i Flexible Couplings Keyless Fits (Metric Edition) ANSI/AGMA 9103-C17 Revisio

2、n of ANSI/AGMA 9103-B08 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 Rev

3、iew, 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 toward their res

4、olution. 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 Am

5、erican 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

6、 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 to any AGMA

7、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 9103-C17, Flexible Couplings Keyless Fits (Metric Edition), published by the

8、American Gear Manufacturers Association, 1001 N. Fairfax Street, Suite 500, Alexandria, Virginia 22314, http:/www.agma.org. Approved December 6, 2017 ABSTRACT This standard presents information on design, dimensions, tolerances, inspection, mounting, removal, and equipment that is in common use with

9、 keyless tapered and keyless straight (cylindrical) bore hubs for flexible couplings. Published by American Gear Manufacturers Association 1001 N. Fairfax Street, Suite 500, Alexandria, Virginia 22314 Copyright 2017 by American Gear Manufacturers Association All rights reserved. No part of this publ

10、ication 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: 978-1-64353-001-7 American National Standard AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 AGMA 2017 All rights rese

11、rved ii Contents Foreword iv 1 Scope 1 1.1 Applicability . 1 1.2 Exclusions . 1 2 Normative references . 1 3 Terms and symbols 1 3.1 Terms 1 3.2 Symbols 1 4 Responsibility 2 5 Design considerations 3 5.1 Determination of interference fit required to transmit the specified torque . 5 5.2 Pressure req

12、uired to mount or dismount hub . 6 5.3 Hub stresses . 6 5.4 Hub bore surface finish . 7 6 Configurations for hydraulic installation or removal of hubs . 7 6.1 Oil ports . 7 6.2 Oil pressure retention and O-ring design 8 7 Tapers, interference rate, and advance . 9 7.1 Tapers . 9 7.2 Interference rat

13、e, i. 9 7.3 Advance, S 9 8 Hydraulic mounting and removal equipment 10 9 Hub inspection, mounting and removal procedures for taper bores 11 9.1 Hub-to-gage contact check . 11 9.2 Hub-to-shaft fit 11 9.3 Hub mounting 11 9.4 Hub retention 15 9.5 Hub removal procedures 15 9.6 Shaft stress relief groove

14、 in hub . 15 10 Hub inspection, mounting and removal procedures for straight cylindrical bores 15 10.1 Hub bore checking 15 10.2 Shaft checking 16 10.3 Preparation for mounting 16 10.4 Hub mounting 16 10.5 Hub removal procedure 17 10.6 Shaft stress relief groove in hub . 17 AMERICAN NATIONAL STANDAR

15、D ANSI/AGMA 9103-C17 AGMA 2017 All rights reserved iii Annexes Annex A (informative) Derivation of constants 18 Annex B (informative) Typical designs and dimensions for grooving and hydraulic fitting holes . 21 Annex C (informative) Mounting and dismounting equipment 24 Annex D (informative) Example

16、 calculations 27 Annex E Bibliography 29 Tables Table 1 Symbols and definitions 2 Table 2 Hub advance per millimeter of shaft diameter, Sd, vs. interference rate, i, for specified diametral tapers 10 Table B.1 Typical hydraulic fitting hole dimensions, millimeters 21 Table B.2 Typical oil groove dim

17、ensions, millimeters 22 Table B.3 Typical shaft stress relief groove dimensions in hubs, millimeters 23 Figures Figure 1 Hub with multiple sections . 3 Figure 2 Flexible hub, gear tooth section influencing torque capacity and pressure . 3 Figure 3 Rigid hub, flange not influencing torque capacity an

18、d pressure 4 Figure 4 Rigid hub, flange influencing torque capacity and pressure 4 Figure 5 Bore configurations 4 Figure 6 Oil port in shaft . 7 Figure 7 Oil ports in hub . 8 Figure 8 O-ring groove locations 8 Figure 9 O-rings with back-up rings . 9 Figure 10 Typical mechanism for hydraulic mounting

19、 and removal 10 Figure 11 Initial position measurement 12 Figure 12 Measurement of hub advance . 12 Figure 13 Retaining mechanisms 14 Figure 14 Relief groove 15 Figure 15 Hub retainer plate and stress relief groove 16 Figure B.1 Hydraulic fitting holes . 21 Figure B.2 Oil injection grooves . 22 Figu

20、re B.3 Oil groove positions 23 Figure B.4 Shaft stress relief groove in hub . 23 Figure C.1 Taper bored hub mounting and dismouting equipment (mounting shown) . 24 Figure C.2 Straight bored hub dismounting equipment . 26 AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 AGMA 2017 All rights reserved iv

21、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 AGMA 9103-C17, Flexible Couplings Keyless Fits (Metric Edition. This standard was developed after intensive study of existing practices, standa

22、rds and literature. The intent of this document is to offer to rotating equipment designers and users a standard for design practice and dimensions regarding keyless fits for flexible couplings. In general, the information in this standard is a consolidation of the most common practices and standard

23、s currently in existence. This AGMA standard and related publications are based on typical or average data, conditions, or applications. Work was begun on ANSI/AGMA 9003-A91 in 1985 and was approved by the AGMA membership in February 1991. It was approved as an American National Standard on May 20,

24、1991. ANSI/AGMA 9103-B08 split the original standard into inch (ANSI/AGMA 9003-B08) and metric versions, updated Annex B and added an example calculation as Annex D. The first draft of ANSI/AGMA 9103-B08 was made in October 2004. It was approved by the AGMA membership in October 2007. It was approve

25、d as an American National Standard on May 20, 2008. ANSI/AGMA 9103-C17 provides a revised description of the effective hub to shaft engagement length, and Figure 5c has been deleted as a result. The first draft of ANSI/AGMA 9103-C17 was made in August 2016. It was approved by the membership in Novem

26、ber 2017 and as an American National Standard on December 6, 2017. Suggestions for improvement of this standard will be welcome. They may be submitted to techagma.org. AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 AGMA 2017 All rights reserved v PERSONNEL of the AGMA Flexible Couplings Committee Cha

27、irman: Todd Schatzka Rexnord Industries, LLC ACTIVE MEMBERS T. Glasener. Regal Power Transmission Solutions B. Greenlees A-C Equipment Services C. Hatseras KTR D. Konopka. Ameridrives Couplings P. Petruska . Lovejoy L. Riggs Regal Power Transmission Solutions J. Rubel Baldor Electric AGMA 2017 All r

28、ights reserved 1 AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 American National Standard Flexible Couplings Keyless Fits (Metric Edition) 1 Scope This standard presents information on design, dimensions, tolerances, inspection, mounting, removal, and equipment that is in common use with keyless tap

29、ered and keyless straight (cylindrical) bore hubs for flexible couplings. Calculated hub stress values and hub to shaft torque capacities are nominal values. This standard does not present a rigorous analysis of the components. 1.1 Applicability This Standard applies only to hubs and solid shafts ma

30、de of steel, which generally have material properties of modulus of elasticity equal to 2.07 105 MPa, density equal to 7830 kg/m3, and thermal expansion coefficient equal to 11.4 10-6 mm/mm/C. 1.2 Exclusions This standard does not apply to couplings attached to shafts with keyways, splines, split hu

31、bs or polygon bores. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to

32、 agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI/AGMA 9112-A04, Bores and Keyways for Flexible Couplings (Metric Series) ANSI/AGMA 9009-D02, Flexible Couplings Nomenclature f

33、or Flexible Couplings 3 Terms and symbols 3.1 Terms The terms used, wherever applicable, conform to the following Standards: ANSI Y10.3-1968, Letter Symbols for Quantities Used in Mechanics of Solids ANSI/AGMA 1012-G05, Gear Nomenclature, Definition of Terms with Symbols 3.2 Symbols The symbols used

34、 in the formulas are shown in Table 1. NOTE: The symbols and definitions used in this standard may differ from other AGMA standards. The user should not assume that familiar symbols can be used without a careful study of these definitions. AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 AGMA 2017 All

35、rights reserved 2 Table 1 Symbols and definitions1), 2) Symbol Definition Units First used Ce Ratio of average bore diameter of section to outside diameter of section under consideration, Ce = Db /Do - - Eq 2 D Shaft diameter at largest end of bore mm Eq 13 Db Average bore diameter of section mm Eq

36、1 Do Outside diameter of section mm Eq 2 E Modulus of elasticity MPa Eq 2 I Diametral interference mm Eq 13 Ic Loss of interference when rotating mm 5.1.4 Imax Maximum diametral interference when not rotating mm Eq 4 Imin Minimum diametral interference fit required to transmit the design torque at s

37、pecified speed mm 5.1.4 i Interference rate mm/mm 7.2 L Effective length of hub to shaft engagement mm Eq 1 N Specified rotational speed 1/min Eq 3 p1 Calculated pressure at hub bore to mount or dismount hub due to maximum interference fit MPa 5.2.1 p2 Maximum recommended pressure at hub bore when m

38、ounting or dismounting the hub MPa 5.2.2 pmin Minimum pressure at hub bore for design torque calculation MPa 5.1.3 Ra Arithmetic average of surface finish mm 5.1.1 S Advance mm 7.3 Sd Advance per millimeter of shaft diameter mm/mm 7.3 Sy Tensile yield strength of the selected hub material MPa 5.3.1

39、T Design torque capacity of hub-to-shaft connection Nm 5.1.2 t Taper, rate of change of diameter per unit length mm/mm Eq 14 Thermal expansion coefficient mm/mm/C Eq 17 T Required temperature difference between hub and shaft for mounting hub C Eq 17 H Maximum hoop stress in mounted hub when rotating

40、 MPa Eq 7 max Maximum hub stress at hub bore due to hydraulic pressure when mounting or dismounting MPa 5.3.1 R Radial stress at hub bore due to interference fit of mounted hub while rotating MPa Eq 7 Rv Radial stress in hub due to rotational speed MPa Eq 7 rot Combined stress in hub when rotating M

41、Pa Eq 7 v Hoop stress in hub due to rotational speed MPa Eq 7 Apparent coefficient of friction - - 5.1.1 NOTE: 1) Equations in this standard require the use of consistent units. 2) For this standard, pressure is noted in megapascals (MPa) to be consistent with hydraulic gages. 1 MPa = 1 N/mm2. 4 Res

42、ponsibility The purchaser has the sole responsibility for specifying the peak torque and all other pertinent loading and operating information affecting the hub-to-shaft juncture. The machine designer is totally responsible for the design of the hub-to-shaft juncture. The sole responsibility of the

43、coupling manufacturer is to provide hubs designed and manufactured according to the purchasers specifications. AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 AGMA 2017 All rights reserved 3 Compliance with this standard does not constitute a warranty of the rating of the hub to shaft juncture under i

44、nstalled conditions. This standard only applies to the hub design. There can be personal injury or catastrophic failure of the shaft or hub-to-shaft juncture as a result of incorrect design, installation, or removal error, or other factors unrelated to the hub design. WARNING: When working with hydr

45、aulic mounting and removal equipment EXTREME care and caution must be used to prevent personal injury and damage to equipment due to explosive axial movement at the time of hub release. 5 Design considerations The design of keyless fits in power transmission couplings is based on the calculations re

46、quired for the safe transmission of the specified torque through the coupling hub-to-shaft juncture. These calculations consist of the following: a) The interference fit required to transmit the specified torque; b) The pressures involved in mounting and dismounting the hub; c) The stresses in the h

47、ub during mounting or dismounting and during operation. The equations in the following sections for hub pressures and stresses account for hubs of substantially uniform cross sections. The equation for torque capacity of the hub-to-shaft juncture assumes the hub outside diameter is uniform and equal

48、 to the outside diameter of the minimum hub section. The torque as calculated is conservatively low. When a hub has multiple outside diameters such as shown in Figure 1, the hub can be split into sections and the torque capacity of each section calculated separately. The total capacity is the sum of

49、 the separate section capacities. Hub configuration must be considered when performing stress and mounting pressure calculations (see Figures 1, 2, 3, and 4). Shrink or interference fit analysis is generally based on Lames equations for a thick walled cylinder under internal pressure. Figure 1 Hub with multiple sections Figure 2 Flexible hub, gear tooth section influencing torque capacity and pressure AMERICAN NATIONAL STANDARD ANSI/AGMA 9103-C17 AGMA 2017 All rights