Rolling bearings - Measuring methods for vibration - Part 4: Radial cylindrical roller bearings with cylindrical bore and outside surface

ISO 15242-4:2017 specifies vibration measuring methods for single-row and double-row radial cylindrical roller bearings with cylindrical bore and outside surface, under established measurement conditions.

Roulements - Méthodes de mesurage des vibrations

L'ISO 15242-4 :2017 spécifie des méthodes de mesurage des vibrations des roulements radiaux ŕ rouleaux cylindriques ŕ une rangée et ŕ deux rangées ŕ alésage et surface extérieure cylindriques, dans des conditions de mesurage établies.

Kotalni ležaji - Metode za merjenje vibracij - 4. del: Radialni valjčni kotalni ležaji z valjasto luknjo in valjasto zunanjo površino

General Information

Status
Published
Publication Date
19-Jul-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
23-Jun-2020
Due Date
28-Aug-2020
Completion Date
20-Jul-2020

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SLOVENSKI STANDARD
SIST ISO 15242-4:2020
01-oktober-2020

Kotalni ležaji - Metode za merjenje vibracij - 4. del: Radialni valjčni kotalni ležaji z

valjasto luknjo in valjasto zunanjo površino

Rolling bearings - Measuring methods for vibration - Part 4: Radial cylindrical roller

bearings with cylindrical bore and outside surface
Roulements - Méthodes de mesurage des vibrations
Ta slovenski standard je istoveten z: ISO 15242-4:2017
ICS:
17.160 Vibracije, meritve udarcev in Vibrations, shock and
vibracij vibration measurements
21.100.20 Kotalni ležaji Rolling bearings
SIST ISO 15242-4:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 15242-4:2020
---------------------- Page: 2 ----------------------
SIST ISO 15242-4:2020
INTERNATIONAL ISO
STANDARD 15242-4
Second edition
2017-08
Rolling bearings — Measuring
methods for vibration —
Part 4:
Radial cylindrical roller bearings with
cylindrical bore and outside surface
Roulements — Méthodes de mesurage des vibrations —
Partie 4: Roulements radiaux à rouleaux cylindriques, à alésage et
surface extérieure cylindriques
Reference number
ISO 15242-4:2017(E)
ISO 2017
---------------------- Page: 3 ----------------------
SIST ISO 15242-4:2020
ISO 15242-4:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All 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 internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 15242-4:2020
ISO 15242-4:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Measurement process ..................................................................................................................................................................................... 1

4.1 Rotational frequency.......................................................................................................................................................................... 1

4.2 Bearing radial and axial loads .................................................................................................................................................... 2

5 Measurement and evaluation methods ........................................................................................................................................ 2

5.1 Physical quantity measured......................................................................................................................................................... 2

5.2 Frequency domain ............................................................................................................................................................................... 2

5.3 Measurement of pulses and spikes ........................................................................................................................................ 3

5.4 Measurement ............................................................................................................................................................................................ 3

6 Conditions for measurement ................................................................................................................................................................... 3

6.1 Bearing conditions for measurement .................................................................................................................................. 3

6.1.1 Prelubricated bearings ............................................................................................................................................... 3

6.1.2 Non-prelubricated bearings ................................................................................................................................... 4

6.2 Conditions of the measurement environment ............................................................................................................. 4

6.3 Conditions for the measurement device ........................................................................................................................... 4

6.3.1 Stiffness of the spindle/mandrel arrangement ..................................................................................... 4

6.3.2 Loading mechanism ...................................................................................................................................................... 4

6.3.3 Magnitude and alignment of the external load applied to the bearing ............................. 4

6.3.4 Location of the transducer and direction of measurement ........................................................ 6

6.3.5 Mandrel .................................................................................................................................................................................... 9

Annex A (normative) Measurement of external radial loading alignment ................................................................10

Annex B (normative) Measurement of external axial loading alignment ...................................................................11

© ISO 2017 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 15242-4:2020
ISO 15242-4:2017(E)
Foreword

ISO (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 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. International

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 for 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 .org/ 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 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 voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO’s adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: w w w . i s o .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 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 clarification
A list of all the parts in the ISO 15242 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 15242-4:2020
ISO 15242-4:2017(E)
Introduction

Vibration in rotating 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 system 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 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 the 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. 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.

Vibration 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.

Ultimately, 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 vibration 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 cylindrical bore and outside surface on a measuring device.

© ISO 2017 – All rights reserved v
---------------------- Page: 7 ----------------------
SIST ISO 15242-4:2020
---------------------- Page: 8 ----------------------
SIST ISO 15242-4:2020
INTERNATIONAL STANDARD ISO 15242-4:2017(E)
Rolling bearings — Measuring methods for vibration —
Part 4:
Radial cylindrical roller bearings with cylindrical bore and
outside surface
1 Scope

This 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 references

The following documents 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, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes —

Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts

ISO 1132-1, Rolling bearings — Tolerances — Part 1: Terms and definitions
ISO 2041, Mechanical vibration, shock and condition monitoring — Vocabulary
ISO 5593, Rolling bearings — Vocabulary

ISO 15242-1:2015, Rolling bearings — Measuring methods for vibration — Part 1: Fundamentals

3 Terms and definitions

For 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 maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
4 Measurement process
4.1 Rotational frequency
−1 −1
The default rotational frequency s
...

INTERNATIONAL ISO
STANDARD 15242-4
Second edition
2017-08
Rolling bearings — Measuring
methods for vibration —
Part 4:
Radial cylindrical roller bearings with
cylindrical bore and outside surface
Roulements — Méthodes de mesurage des vibrations —
Partie 4: Roulements radiaux à rouleaux cylindriques, à alésage et
surface extérieure cylindriques
Reference number
ISO 15242-4:2017(E)
ISO 2017
---------------------- Page: 1 ----------------------
ISO 15242-4:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All 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 internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 15242-4:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Measurement process ..................................................................................................................................................................................... 1

4.1 Rotational frequency.......................................................................................................................................................................... 1

4.2 Bearing radial and axial loads .................................................................................................................................................... 2

5 Measurement and evaluation methods ........................................................................................................................................ 2

5.1 Physical quantity measured......................................................................................................................................................... 2

5.2 Frequency domain ............................................................................................................................................................................... 2

5.3 Measurement of pulses and spikes ........................................................................................................................................ 3

5.4 Measurement ............................................................................................................................................................................................ 3

6 Conditions for measurement ................................................................................................................................................................... 3

6.1 Bearing conditions for measurement .................................................................................................................................. 3

6.1.1 Prelubricated bearings ............................................................................................................................................... 3

6.1.2 Non-prelubricated bearings ................................................................................................................................... 4

6.2 Conditions of the measurement environment ............................................................................................................. 4

6.3 Conditions for the measurement device ........................................................................................................................... 4

6.3.1 Stiffness of the spindle/mandrel arrangement ..................................................................................... 4

6.3.2 Loading mechanism ...................................................................................................................................................... 4

6.3.3 Magnitude and alignment of the external load applied to the bearing ............................. 4

6.3.4 Location of the transducer and direction of measurement ........................................................ 6

6.3.5 Mandrel .................................................................................................................................................................................... 9

Annex A (normative) Measurement of external radial loading alignment ................................................................10

Annex B (normative) Measurement of external axial loading alignment ...................................................................11

© ISO 2017 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 15242-4:2017(E)
Foreword

ISO (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 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. International

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 for 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 .org/ 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 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 voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO’s adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: w w w . i s o .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 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 clarification
A list of all the parts in the ISO 15242 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 15242-4:2017(E)
Introduction

Vibration in rotating 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 system 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 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 the 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. 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.

Vibration 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.

Ultimately, 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 vibration 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 cylindrical bore and outside surface on a measuring device.

© ISO 2017 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 15242-4:2017(E)
Rolling bearings — Measuring methods for vibration —
Part 4:
Radial cylindrical roller bearings with cylindrical bore and
outside surface
1 Scope

This 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 references

The following documents 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, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes —

Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts

ISO 1132-1, Rolling bearings — Tolerances — Part 1: Terms and definitions
ISO 2041, Mechanical vibration, shock and condition monitoring — Vocabulary
ISO 5593, Rolling bearings — Vocabulary

ISO 15242-1:2015, Rolling bearings — Measuring methods for vibration — Part 1: Fundamentals

3 Terms and definitions

For 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 maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
4 Measurement process
4.1 Rotational frequency
−1 −1

The default rotational frequency shall be 1 800 min (30 s ) for bearings with outside diameter up to

−1 −1

100 mm and 900 min (15 s ) for outside diameters larger than 100 mm up to 200 mm. The tolerance

shall be % of the nominal rotational frequency.

Other rotational frequencies and tolerances may be used by agreement between the manufacturer 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. Conver
...

NORME ISO
INTERNATIONALE 15242-4
Deuxième édition
2017-08
Roulements — Méthodes de mesurage
des vibrations —
Partie 4:
Roulements radiaux à rouleaux
cylindriques, à alésage et surface
extérieure cylindriques
Rolling bearings — Measuring methods for vibration —
Part 4: Radial cylindrical roller bearings with cylindrical bore and
outside surface
Numéro de référence
ISO 15242-4:2017(F)
ISO 2017
---------------------- Page: 1 ----------------------
ISO 15242-4:2017(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2017, Publié en Suisse

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée

sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur

l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à

l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – Tous droits réservés
---------------------- Page: 2 ----------------------
ISO 15242-4:2017(F)
Sommaire Page

Avant-propos ..............................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Domaine d'application ................................................................................................................................................................................... 1

2 Références normatives ................................................................................................................................................................................... 1

3 Termes et définitions ....................................................................................................................................................................................... 1

4 Processus de mesurage.................................................................................................................................................................................. 1

4.1 Fréquence de rotation....................................................................................................................................................................... 1

4.2 Charge axiale du roulement ......................................................................................................................................................... 2

5 Méthodes de mesurage et d'évaluation ........................................................................................................................................ 2

5.1 Grandeur physique mesurée ....................................................................................................................................................... 2

5.2 Gamme de fréquences....................................................................................................................................................................... 2

5.3 Mesurage des impulsions et des pics ................................................................................................................................... 3

5.4 Mesurage ...................................................................................................................................................................................................... 3

6 Conditions de mesurage ............................................................................................................................................................................... 4

6.1 État des roulements avant mesurage .................................................................................................................................. 4

6.1.1 Roulements prélubrifiés ............................................................................................................................................ 4

6.1.2 Roulements non prélubrifiés ................................................................................................................................. 4

6.2 Conditions environnementales de mesurage ............................................................................................................... 4

6.3 Conditions relatives au dispositif de mesurage .......................................................................................................... 4

6.3.1 Raideur de la broche/mandrin ............................................................................................................................ 4

6.3.2 Mécanisme de mise en charge .............................................................................................................................. 4

6.3.3 Valeur et alignement de la charge externe appliquée au roulement .................................. 4

6.3.4 Positionnement du transducteur et sens du mesurage .................................................................. 6

6.3.5 Mandrin ................................................................................................................................................................................... 9

Annexe A (normative) Mesurage de l’alignement radial extérieur de mise en charge .................................10

Annexe B (normative) Mesurage de l'alignement axial extérieur de mise en charge ....................................11

© ISO 2017 – Tous droits réservés iii
---------------------- Page: 3 ----------------------
ISO 15242-4:2017(F)
Avant-propos

L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes

nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est

en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude

a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,

gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.

L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui

concerne la normalisation électrotechnique.

Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont

décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents

critères d'approbation requis pour les différents types de documents ISO. Le présent document a été

rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www.

iso.org/directives).

L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de

droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable

de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant

les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de

l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de

brevets reçues par l'ISO (voir www.iso.org/brevets).

Les appellations commerciales éventuellement mentionnées dans le présent document sont données

pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un

engagement.

Pour une explication de la nature volontaire des normes, la signification des termes et expressions

spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion

de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles

techniques au commerce (OTC), voir le lien suivant: www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 4, Roulements.

Cette deuxième édition annule et remplace la première édition (ISO 15242-4:2007), qui a fait l'objet

d'une révision technique.

Les principales modifications par rapport à la précédente édition sont les suivantes:

— des modifications rédactionnelles ont été apportées pour clarifier et enlever les incohérences;

— les légendes de figures ont été mise à jour pour clarification.

Une liste de toutes les parties de la série ISO 15242 se trouve sur le site web de l’ISO.

iv © ISO 2017 – Tous droits réservés
---------------------- Page: 4 ----------------------
ISO 15242-4:2017(F)
Introduction

La vibration des roulements rotatifs peut avoir des conséquences importantes sur les caractéristiques

de fonctionnement de ces matériels. Elle peut également affecter les performances du système

mécanique incorporant ces roulements et engendrer un bruit audible par transmission de cette

vibration à l'environnement de travail, provoquer des dommages, voire des problèmes de santé.

La vibration des roulements rotatifs est un phénomène physique complexe qui dépend des conditions

de fonctionnement. Le fait de mesurer la vibration d'un roulement donné dans des conditions données

ne caractérise pas nécessairement la vibration de ce roulement dans d'autres conditions ou de ce

roulement dès qu'il fait partie d'un ensemble plus grand. L'évaluation du bruit audible engendré par

le système mécanique incorporant le roulement est encore compliquée par l’effet des conditions

d'interface, de l'emplacement et de l'orientation du capteur et de l'environnement acoustique dans

lequel le système fonctionne. L'évaluation du bruit aérien qui, dans le cadre de l’ISO 15242 (toutes les

parties), peut se définir comme tout bruit désagréable et non souhaité, est également compliquée par

l'acception subjective que l'on donne aux termes désagréable et non souhaité. C’est principalement

la vibration transmise par la structure qui peut être considérée comme à la base du bruit aérien. La

présente édition de toutes les parties de l'ISO 15242 ne s'intéresse qu'à un certain nombre de méthodes

choisies pour mesurer la vibration de la structure des roulements rotatifs.

Les vibrations des roulements rotatifs peuvent être évaluées de plusieurs manières en utilisant divers

types de transducteurs dans diverses conditions de mesurage. Aucun ensemble simple de valeurs

caractérisant la vibration d'un roulement n'est suffisant pour évaluer la performance de toutes les

applications possibles. Pour choisir la méthode de mesurage la plus appropriée, il est essentiel, en fin de

compte, de connaître le type du roulement, son utilisation et le but visé par les mesures de vibrations

(par exemple, diagnostic technique ou contrôle qualité). Le domaine d'application des normes relatives

aux vibrations des roulements n'est donc pas universel. Certaines méthodes ont toutefois un champ

d'application suffisamment vaste pour être considérées comme des méthodes normalisées.

Le présent document sert à définir une méthode détaillée d'évaluation des vibrations des roulements

radiaux à rouleaux cylindriques à une rangée et à deux rangées à alésage et surface extérieure

cylindriques sur un dispositif de mesurage.
© ISO 2017 – Tous droits réservés v
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NORME INTERNATIONALE ISO 15242-4:2017(F)
Roulements — Méthodes de mesurage des vibrations —
Partie 4:
Roulements radiaux à rouleaux cylindriques, à alésage et
surface extérieure cylindriques
1 Domaine d'application

Le présent document spécifie des méthodes de mesurage des vibrations des roulements radiaux à

rouleaux cylindriques à une rangée et à deux rangées à alésage et surface extérieure cylindriques, dans

des conditions de mesurage établies.
2 Références normatives

Les documents suivants cités dans le texte constituent, pour tout ou partie de leur contenu, des

exigences du présent document. Pour les références datées, seule l’édition citée s’applique. Pour les

références non datées, la dernière édition du document de référence s'applique (y compris les éventuels

amendements).

ISO 286-2, Spécification géométrique des produits (GPS) — Système de codification ISO pour les tolérances

sur les tailles linéaires — Partie 2: Tableaux des classes de tolérance normalisées et des écarts limites des

alésages et des arbres
ISO 1132-1, Roulements — Tolérances — Partie 1: Termes et définitions
ISO 2041, Vibrations et chocs mécaniques, et leur surveillance — Vocabulaire
ISO 5593, Roulements — Vocabulaire

ISO 15242-1:2015, Roulements — Méthodes de mesurage des vibrations — Partie 1: Principes fondamentaux

3 Termes et définitions

Pour les besoins du présent document, les termes et définitions donnés dans l’ISO 1132-1, l'ISO 2041,

l'ISO 5593 et l'ISO 15242-1 s'appliquent.

L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en

normalisation, consultables aux adresses suivantes:
— IEC Electropedia: disponible à l'adresse http://www.electropedia.org/
— ISO Online browsing platform: disponible à l'adresse http://www.iso.org/obp
4 Processus de mesurage
4.1 Fréquence de rotation
−1 −1

La fréquence de rotation par défaut doit être de 1 800 min (30 s ) pour les roulements de diamètres

−1 −1

extérieurs jusqu’à 100 mm et de 900 min (15 s ) pour les diamètres extérieurs supérieurs à 100 mm

et jusqu’à 200 mm. La tolérance pour la vitesse de rotation doit être % de la fréquence de rotation

nominale.
© ISO 2017 – Tous droits réservés 1
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ISO 15242-4:2017(F)

D'autres fréquences de rotation et d'autres tolérances peuvent être utilisées par accord entre le

fabricant et le client; par exemple, il peut être nécessaire d'utiliser une fréquence de rotation supérieure

pour les roulements de taille plus réduite afin d'obtenir un signal de vibration approprié. Inversement,

il peut être nécessaire d'utiliser une fréquence de rotation inférieure pour les roulements de taille plus

grande afin d'éviter d'éventuels dommages des rouleaux et des chemins de roulement.

4.2 Charge axiale du roulement

La charge appliquée au roulement doit être de type radial avec les valeurs par défaut spécifiées dans le

Tableau 1.
D’autres charges radiales et tolérances peuvent
...

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