ANSI ABMA 15242-4-2018 Rolling Bearings - Measuring Methods For Vibration - Part 4 Radial Cylindrical Roller Bearings With Cylindrical Bore And Outside Surface.pdf

1、A1 ABMA 330 N. Wabash Avenue Suite 2000 Chicago, IL 60611 Ph: 202 367-1155 E-mail: infoamericanbearings.org www.americanbearings.org ANSI/ABMA/ISO 15242-4:2018 ABMA Standard Rolling Bearings - Measuring Methods For Vibration - Part 4: Radial Cylindrical Roller Bearings With Cylindrical Bore And Outs

2、ide Surface Sponsor American Bearing Manufacturers Association ANSI/ABMA/ISO 15242-4:2018 (Identical Adoption of ISO 15242-4:2017) Copyright American Bearing Manufacturers Association, Inc. Neither part of the printed publication, nor any part of the electronic tile may be reproduced or transmitted

3、in any form, including transmittal by e-mail, by file transfer protocol (FTP), or by being made part of a network-accessible system, without the prior written permission of the copyright owner. ABMA FOREWORD (This foreword is not part of ANSI/ABMA/ISO 15242-4:2018.) IS0 (the International Organizati

4、on for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of developing International Standards is carried out through IS0 technical committees. Every member body interested in a subject for which a technical committee has been authorized has the ri

5、ght to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. The text is approved as an International Standard if a two-thirds majority of the P (participating)-members of the TC/SC are in favor and not more

6、 than one-quarter of the total number of votes cast are negative. International Standard 15242-4:2017 was prepared by Technical Committee ISO/TC 4, Rolling Bearings. This standard was processed and approved for submittal to ANSI for national adoption by Accredited Standards Committee B3. Committee a

7、pproval of the national adoption of this standard does not necessarily mean that all committee members voted for its adoption. Suggestions for the improvement of this standard gained through experience with its use will be welcomed. These suggestions should be sent to: ASC B3 Secretariat American Be

8、aring Manufacturers Association 330 N. Wabash Ave, Ste 2000 Chicago, IL 60611 ISO 2017Rolling bearings Measuring methods for vibration Part 4: Radial cylindrical roller bearings with cylindrical bore and outside surfaceRoulements Mthodes de mesurage des vibrations Partie 4: Roulements radiaux roulea

9、ux cylindriques, alsage et surface extrieure cylindriquesINTERNATIONAL STANDARDISO15242-4Second edition2017-08Reference numberISO 15242-4:2017(E)Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloa

10、ded 9/8/2017 11:09 AM. Not for additional sale or distribution.ISO 15242-4:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any

11、form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandon

12、net 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgCopyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 9/8/2017 11:09 AM. Not fo

13、r additional sale or distribution.ISO 15242-4:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Measurement process . 14.1 Rotational frequency 14.2 Bearing radial and axial loads 25 Measurement and evaluation methods 25.1 Physical quantity measured. 25.

14、2 Frequency domain . 25.3 Measurement of pulses and spikes 35.4 Measurement 36 Conditions for measurement . 36.1 Bearing conditions for measurement 36.1.1 Prelubricated bearings . 36.1.2 Non-prelubricated bearings . 46.2 Conditions of the measurement environment . 46.3 Conditions for the measurement

15、 device . 46.3.1 Stiffness of the spindle/mandrel arrangement . 46.3.2 Loading mechanism 46.3.3 Magnitude and alignment of the external load applied to the bearing . 46.3.4 Location of the transducer and direction of measurement 66.3.5 Mandrel 9Annex A (normative) Measurement of external radial load

16、ing alignment 10Annex B (normative) Measurement of external axial loading alignment .11 ISO 2017 All rights reserved iiiContents PageCopyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 9/8/2017

17、 11:09 AM. Not for additional sale or distribution.ISO 15242-4:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technic

18、al committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely wi

19、th the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed

20、for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r

21、ights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used i

22、n this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the Wor

23、ld Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www . iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 4, Rolling bearings.This second edition cancels and replaces the first edition (ISO 15242-4:2007), which

24、 has been technically revised.The main changes compared to the previous edition are as follows: editorial changes have been made for clarification and removal of inconsistencies figure keys have been updated for clarificationA list of all the parts in the ISO 15242 series can be found on the ISO web

25、site.iv ISO 2017 All rights reservedCopyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 9/8/2017 11:09 AM. Not for additional sale or distribution.ISO 15242-4:2017(E)IntroductionVibration in ro

26、tating rolling bearings can be of importance as an operating characteristic of such bearings. The vibration can affect the performance of the mechanical system incorporating the bearing and can result in audible noise when the vibration is transmitted to the environment in which the mechanical syste

27、m operates, can lead to damages, and can even create health problems.Vibration of rotating rolling bearings is a complex physical phenomenon dependent on the conditions of operation. Measuring the vibration of an individual bearing under a certain set of conditions does not necessarily characterize

28、the vibration under a different set of conditions or when the bearing becomes part of a larger assembly. Assessment of the audible sound generated by the mechanical system incorporating the bearing is further complicated by the influence of the interface conditions, the location and orientation of t

29、he sensing device, and the acoustical environment in which the system operates. Assessment of airborne noise that, for the purpose of ISO 15242 (all parts), can be defined as any disagreeable and undesired sound, is further complicated by the subjective nature of the terms disagreeable and undesired

30、. Structure-borne vibration can be considered the driving mechanism that ultimately results in the generation of airborne noise. Only selected methods for the measurement of the structure-borne vibration of rotating rolling bearings are addressed in the current edition of all parts of ISO 15242.Vibr

31、ation of rotating rolling bearings can be assessed by a number of means using various types of transducers and measurement conditions. No simple set of values characterizing the vibration of a bearing is adequate for the evaluation of the vibratory performance in all possible applications. Ultimatel

32、y, a knowledge of the type of bearing, its application and the purpose of the vibration measurement (e.g. as a manufacturing process diagnostic or an assessment of the product quality) is required to select the most suitable method for measuring. The field of application for standards on bearing vib

33、ration is, therefore, not universal. However, certain methods have established a wide enough level of application to be considered as standard methods.This document serves to define the detailed method for assessing vibration of single-row and double-row radial cylindrical roller bearings with cylin

34、drical bore and outside surface on a measuring device. ISO 2017 All rights reserved vCopyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 9/8/2017 11:09 AM. Not for additional sale or distributi

35、on.Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 9/8/2017 11:09 AM. Not for additional sale or distribution.Rolling bearings Measuring methods for vibration Part 4: Radial cylindrical rol

36、ler bearings with cylindrical bore and outside surface1 ScopeThis document specifies vibration measuring methods for single-row and double-row radial cylindrical roller bearings with cylindrical bore and outside surface, under established measurement conditions.2 Normative referencesThe following do

37、cuments are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 286-2, Geo

38、metrical product specifications (GPS) I SO code system for tolerances on linear sizes Part 2: Tables of standard tolerance classes and limit deviations for holes and shaftsISO 1132-1, Rolling bearings Tolerances Part 1: Terms and definitionsISO 2041, Mechanical vibration, shock and condition monitor

39、ing VocabularyISO 5 593, Rolling bearings VocabularyISO 15 242-1:2015, Rolling bearings Measuring methods for vibration Part 1: Fundamentals3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 2041, ISO 5593 and ISO 15242-1 apply.ISO and IEC ma

40、intain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp4 Measurement process4.1 Rotational frequencyThe default rotational frequen

41、cy shall be 1 800 min1(30 s1) for bearings with outside diameter up to 100 mm and 900 min1(15 s1) for outside diameters larger than 100 mm up to 200 mm. The tolerance shall be +21% of the nominal rotational frequency.Other rotational frequencies and tolerances may be used by agreement between the ma

42、nufacturer and the customer; e.g. it may be necessary to use a higher rotational frequency for bearings in the smaller-size range in order to obtain an adequate vibration signal. Conversely, it may be necessary to use a lower rotational frequency for bearings in the larger size range to avoid possib

43、le roller and raceway damage.INTERNATIONAL STANDARD ISO 15242-4:2017(E) ISO 2017 All rights reserved 1Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 9/8/2017 11:09 AM. Not for additional s

44、ale or distribution.ISO 15242-4:2017(E)4.2 Bearing radial and axial loadsThe bearing load shall be in the radial direction with default values as specified in Table 1.Other radial loads and tolerances may be used by agreement between the manufacturer and the customer, e.g. depending on bearing desig

45、n, rotational frequency and lubricant used. It may be necessary to use a higher load to prevent roller/raceway slip, or a lower load to avoid possible roller, rib and raceway damage.For bearings capable of taking axial load, an axial load of up to 30 N shall be applied on the outer ring to ensure a

46、stable operation.The method of applying the radial and axial loads is described in 6.3.3.NOTE Default values for radial loads are resultant values. Actual values depend on load angle used (see Figure 3).Table 1 Default values for bearing radial loadBearing outside diameterDSingle-row radial cylindri

47、cal roller bearingsDouble-row radial cylindrical roller bearingsDefault values for bearing radial load min. max. min. max.mm N N30 50 135 165 165 19550 70 165 195 225 27570 100 225 275 315 385100 140 315 385 430 520140 170 430 520 565 685170 200 565 685 720 8805 Measurement and evaluation methods5.1

48、 Physical quantity measuredThe default physical quantity to be measured is root mean square vibration velocity, rms(m/s), in the radial direction.5.2 Frequency domainThe vibration velocity shall be analysed in one or more bands with default frequency ranges as specified in Table 2.Other frequency ra

49、nges may be considered by agreement between the manufacturer and the customer in those instances where specific ranges have greater importance to successful operation of the bearing. Commonly used examples are listed in Table 3.Changing the frequency of rotation should always come along with a proportional change of the filter frequencies and acceptance limits and minimum measuring time. Examples are given in Table 3.Narrow band spectral analysis of the vibration signal may be considered as a supplementary option.2