1、 Rolling bearings - Measuring methods for vibration - Part 2: Radial ball bearings with cylindrical bore and outside surface ANSI/ABMA/ISO 15242-2-2016 Sponsor American Bearing Manufacturers Association ANSI/ABMA/ISO 15242-2-2016 (Identical Adoption of ISO 15242-2:2015) Copyright American Bearing Ma
2、nufacturers Association, Inc. Neither part of the printed publication, nor any part of the electronic tile may be reproduced or transmitted 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 p
3、ermission of the copyright owner. ABMA FOREWORD (This foreword is not part of ANSI/ABMA/ISO 15242-2-2016.) IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of developing International Standards is carried ou
4、t through IS0 technical committees. Every member body interested in a subject for which a technical committee has been authorized 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. The te
5、xt 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 than one-quarter of the total number of votes cast are negative. International Standard 15242-2-2015 was prepared by Technical Committee ISO/TC 4, Rolling Bear
6、ings / Subcommittee 4, Tolerances, tolerance definitions and symbols (including GPS). This standard was processed and approved for submittal to ANSI for national adoption by Accredited Standards Committee B3. Committee approval of the national adoption of this standard does not necessarily mean that
7、 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 Bearing Manufacturers Association 2025 M Street, N.W., Suite 800 Washington, DC 20
8、036 ISO 2015Rolling bearings Measuring methods for vibration Part 2: Radial ball bearings with cylindrical bore and outside surfaceRoulements Mthodes de mesurage des vibrations Partie 2: Roulements billes radiaux, alsage et surface extrieure cylindriquesINTERNATIONAL STANDARDISO15242-2Second edition
9、 2015-12-15Reference numberISO 15242-2:2015(E)Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 12/30/2015 10:30 AM. Not for additional sale or distribution.ISO 15242-2:2015(E)ii ISO 2015 All
10、 rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the interne
11、t 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 Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrigh
12、tiso.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 12/30/2015 10:30 AM. Not for additional sale or distribution.ISO 15242-2:2015(E)Foreword ivIntroduction v1 Scope . 12 Norm
13、ative references 13 Terms and definitions . 14 Measurement process . 14.1 Rotational frequency 14.2 Bearing axial load . 15 Measurement and evaluation methods 25.1 Physical quantity measured. 25.2 Frequency domain . 25.3 Measurement of pulses and spikes 35.4 Measurement 36 Conditions for measurement
14、 . 36.1 Bearing conditions for measurement 36.1.1 Prelubricated bearings . 36.1.2 Non-prelubricated bearings . 36.2 Conditions of the measurement environment . 46.3 Conditions for the measuring device . 46.3.1 Stiffness of the spindle/mandrel arrangement . 46.3.2 Loading mechanism 46.3.3 Magnitude a
15、nd alignment of the external load applied to the bearing . 46.3.4 Axial location of the transducer and direction of measurement 56.3.5 Mandrel 6Annex A (normative) Measurement of external axial loading alignment 7 ISO 2015 All rights reserved iiiContents PageCopyright by ISO. Reproduced by ANSI with
16、 permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 12/30/2015 10:30 AM. Not for additional sale or distribution.ISO 15242-2:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national
17、 standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical 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. Internationa
18、l organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended fo
19、r its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed 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.or
20、g/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. 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
21、in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions r
22、elated to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 4, Rolling bearings.This second edition cancels
23、 and replaces the first edition (ISO 15242-2:2004), which has been technically revised. It also incorporates the Technical Corrigendum ISO 15242-2:2004/Cor 1:2010.ISO 15242 consists of the following parts, under the general title Rolling bearings Measuring methods for vibration: Part 1: Fundamentals
24、 Part 2: Radial ball bearings with cylindrical bore and outside surface Part 3: Radial spherical and tapered roller bearings with cylindrical bore and outside surface Part 4: Radial cylindrical roller bearings with cylindrical bore and outside surfaceiv ISO 2015 All rights reservedCopyright by ISO.
25、Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 12/30/2015 10:30 AM. Not for additional sale or distribution.ISO 15242-2:2015(E)IntroductionVibration in rotating rolling bearings can be of importance as an o
26、perating 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 system operates, can lead to damages, and can even create
27、 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 the vibration under a different set of conditions or
28、 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 the sensing device, and the acoustical environment in
29、 which the system operates. Assessment of airborne noise that, for the purpose of this document, can be defined as any disagreeable and undesired sound, is further complicated by the subjective nature of the terms disagreeable and undesired. Structure-borne vibration can be considered the driving me
30、chanism 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 ISO 15242.Vibration of rotating rolling bearings can be assessed by a number of means u
31、sing 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. Ultimately, a knowledge of the type of bearing, its application and the purpose of
32、 the vibration measurement (e.g. as a manufacturing process diagnostic or an assessment of product quality) is required to select the most suitable method for measuring. The field of application for standards on bearing vibration is therefore not universal. However, certain methods have established
33、a wide enough level of application to be considered as standard methods.This part of ISO 15242 serves to define the detailed method for assessing vibration of radial ball bearings with cylindrical bore and outside surface on a measuring device. ISO 2015 All rights reserved vCopyright by ISO. Reprodu
34、ced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 12/30/2015 10:30 AM. Not for additional sale or distribution.Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee
35、 members for further standardization only. Downloaded 12/30/2015 10:30 AM. Not for additional sale or distribution.Rolling bearings Measuring methods for vibration Part 2: Radial ball bearings with cylindrical bore and outside surface1 ScopeThis part of ISO 15242 specifies vibration measuring method
36、s for single-row and double-row radial ball bearings, with a contact angle up to and including 45.It covers radial ball bearings with cylindrical bore and outside surface, except bearings with filling slots and three- and four-point-contact ball bearings.2 Normative referencesThe following documents
37、, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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, Geometrical product
38、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 2041:2009, Mechanical vibration, shock and condition monitoring VocabularyISO 5593, Rolling bearings VocabularyISO 15242-1:2015, Rolling bear
39、ings Measuring methods for vibration Part 1: Fundamentals3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 2041, ISO 5593 and ISO 15242-1 apply.4 Measurement process4.1 Rotational frequencyThe default rotational frequency shall be 1 800 min1(30 s1). The
40、 tolerance shall be +21% of the nominal rotational frequency.Other rotational frequencies and tolerances may be used by agreement between the manufacturer and the customer, for example, it may be necessary to use a higher rotational frequency for bearings in the smaller size range (e.g. 3 600 min1)
41、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 (e.g. 700 min1) to avoid possible ball and raceway damage.4.2 Bearing axial loadThe bearing load shall be in the axial direction with default val
42、ues as specified in Table 1.INTERNATIONAL STANDARD ISO 15242-2:2015(E) ISO 2015 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 12/30/2015 10:30 AM. Not for additional
43、sale or distribution.ISO 15242-2:2015(E)Table 1 Default values for bearing axial loadBearing outside diameterDSingle-row and double- row deep groove and self-aligning radial ball bearingsSingle-row and double-row angular contact radial ball bearings10 min. max. min. max. min. max.mm N N N10 25 18 22
44、 27 33 36 4425 50 63 77 90 110 126 15450 100 135 165 203 247 270 330100 140 360 440 540 660 720 880140 170 585 715 878 1 072 1 170 1 430170 200 810 990 1 215 1 485 1 620 1 980Other axial loads and tolerances may be used by agreement between the manufacturer and the customer, for example, depending o
45、n bearing design, rotational frequency and lubricant used, it may be necessary to use a higher load to prevent ball/raceway slip or a lower load to avoid possible ball and raceway damage.5 Measurement and evaluation methods5.1 Physical quantity measuredThe default physical quantity to be measured is
46、 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.Table 2 Default Frequency ranges for default rotational frequency of 1 800 min1Rotational fr
47、equency Low band (L) Medium band (M) High band (H)Nominal band pass frequenciesmin. max. flowfuppflowfuppflowfuppmin1Hz Hz Hz1 764 1 818 50 300 300 1 800 1 800 10 000Other frequency ranges may be considered by agreement between the manufacturer and the customer in those instances where specific rang
48、es have greater importance to successful operation of the bearing. Common 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
49、 3.2 ISO 2015 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 12/30/2015 10:30 AM. Not for additional sale or distribution.ISO 15242-2:2015(E)Table 3 Examples of frequency ranges for non-standard rotational frequenciesRotational frequency Low band (L) Medium band (M) High band (H)Nominal band pass frequenciesnominal min. max. flowfuppflowfuppflowfuppmin1Hz Hz Hz3 600 3 528 3 636 1
