Plain bearings -- Thin-walled half bearings with or without flange

This document specifies in accordance with ISO 12301 the checking of the wall-thickness of thin-walled half bearings with or without flange and describes the necessary checking methods and measuring equipment. It applies to a maximum bearing diameter of 150 mm. It can be applied to a bigger diameter, provided that there is an agreement between the supplier and the user.

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Status
Published
Publication Date
08-Sep-2020
Current Stage
6060 - International Standard published
Start Date
30-Jul-2020
Completion Date
09-Sep-2020
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INTERNATIONAL ISO
STANDARD 3548-2
Second edition
2020-09
Plain bearings — Thin-walled half
bearings with or without flange —
Part 2:
Measurement of wall thickness and
flange thickness
Reference number
ISO 3548-2:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 3548-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 3548-2:2020(E)
Contents Page

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

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

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

3 Terms and definition ........................................................................................................................................................................................ 1

4 Symbols and units ............................................................................................................................................................................................... 2

5 Purpose of checking .......................................................................................................................................................................................... 2

6 Checking methods ............................................................................................................................................................................................... 3

6.1 Measuring principle of wall thickness ................................................................................................................................ 3

6.2 Line measurement around the circumference ............................................................................................................ 3

6.3 Line measurement in axial direction ................................................................................................................................... 4

6.4 Point measurement ............................................................................................................................................................................. 5

6.5 Grading of bearings ............................................................................................................................................................................. 7

6.6 Eccentric bore .......................................................................................................................................................................................... 7

6.7 Measuring principle for flange thickness ......................................................................................................................... 7

6.8 Measuring point for flange thickness .................................................................................................................................. 7

7 Requirements for measuring equipment and specimen for the contact method.............................8

7.1 Tip-radius for measuring pin on the outside surface ............................................................................................ 8

7.2 Tip-radius for measuring pin on the inside surface ................................................................................................ 8

7.3 Measuring pin load .............................................................................................................................................................................. 8

7.4 Set-up .............................................................................................................................................................................................................. 8

7.5 Periodical control.................................................................................................................................................................................. 8

7.6 Measurement failures on the inside and/or outside surface .......................................................................... 9

8 Checking of measuring equipment .................................................................................................................................................... 9

Bibliography .............................................................................................................................................................................................................................10

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 3548-2:2020(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 of 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 www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 123, Plain Bearings, Subcommittee SC 5,

Quality analysis and assurance.

This second edition cancels and replaces the first edition (ISO 3548-2:2009), which has been technically

revised. The main changes compared to the previous edition are as follows:
— the term “flange thickness” has been introduced in Clause 3;
— Table 1 has been updated;
— several figures have been revised;

— a new Table 3 “Thin walled half bearings with flange — Distance to measuring position a ” has

been introduced.
A list of all parts in the ISO 3548 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 3548-2:2020(E)
Plain bearings — Thin-walled half bearings with or
without flange —
Part 2:
Measurement of wall thickness and flange thickness
1 Scope

This document specifies in accordance with ISO 12301 the checking of the wall-thickness of thin-walled

half bearings with or without flange and describes the necessary checking methods and measuring

equipment.

It applies to a maximum bearing diameter of 150 mm. It can be applied to a bigger diameter, provided

that there is an agreement between the supplier and the user.
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 3548-1, Plain bearings — Thin-walled half bearings with or without flange — Part 1: Tolerances, design

features and methods of test
3 Terms and definition

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
For the purposes of thisdocument, the following definitions apply:
3.1
wall thickness

radial distance between the opposing measuring points at the inner and outer cylindrical surfaces

Note 1 to entry: See Figure 1.
Figure 1 — Wall thickness, s , of a half bearing
© ISO 2020 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 3548-2:2020(E)
3.2
measuring point
agreed point established to facilitate agreement on checking

Note 1 to entry: The establishment of measuring points (lines) does not preclude the need to comply with

dimensional specifications in other areas.
3.3
measuring line
agreed line established to facilitate agreement on checking

Note 1 to entry: The establishment of measuring lines does not preclude the need to comply with dimensional

specifications in other areas.
3.4
tolerance
range between the upper specified limit and t
...

DRAFT INTERNATIONAL STANDARD
ISO/DIS 3548-2
ISO/TC 123/SC 5 Secretariat: DIN
Voting begins on: Voting terminates on:
2018-06-19 2018-09-11
Plain bearings — Thin-walled half bearings with or
without flange —
Part 2:
Measurement of wall thickness and flange thickness
Paliers lisses — Demi-coussinets minces à collerette ou sans collerette —
Partie 2: Mesurage de l'épaisseur de paroi et de l'épaisseur de collerette
ICS: 21.100.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 3548-2:2018(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2018
---------------------- Page: 1 ----------------------
ISO/DIS 3548-2:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS 3548-2:2018(E)
Contents Page

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

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

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

3 Terms and definition ........................................................................................................................................................................................ 1

4 Symbols and units ............................................................................................................................................................................................... 2

5 Purpose of checking .......................................................................................................................................................................................... 2

6 Checking methods ............................................................................................................................................................................................... 2

6.1 Measuring principle of wall thickness ................................................................................................................................ 2

6.2 Line measurement around the circumference ............................................................................................................ 3

6.3 Line measurement in axial direction ................................................................................................................................... 4

6.4 Point measurement ............................................................................................................................................................................. 5

6.5 Grading of bearings ............................................................................................................................................................................. 7

6.6 Eccentric bore .......................................................................................................................................................................................... 7

6.7 Measuring principle for flange thickness ......................................................................................................................... 7

6.8 Measuring point for flange thickness .................................................................................................................................. 8

7 Requirements for measuring equipment and specimen for the contact method.............................8

7.1 Tip-radius for measuring pin on the outside surface ............................................................................................ 8

7.2 Tip-radius for measuring pin on the inside surface ................................................................................................ 8

7.3 Measuring pin load .............................................................................................................................................................................. 8

7.4 Set-up .............................................................................................................................................................................................................. 8

7.5 Periodical Control ................................................................................................................................................................................. 8

7.6 Measurement Failures on the inside and/or outside surface ......................................................................... 9

Bibliography .............................................................................................................................................................................................................................10

© ISO 2018 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DIS 3548-2:2018(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: www .iso .org/iso/foreword .html.

ISO 3548-2 was prepared by Technical Committee ISO/TC 123, Plain Bearings, Subcommittee SC 5,

Quality analysis and assurance.

This second edition cancels and replaces the first edition (ISO 3548-2:2009), which has been technically

revised.
The main changes compared to the previous edition are as follows:
xxx xxxxxxx xxx xxxx
A list of all parts in the ISO 3547- series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 3548-2:2018(E)
Plain bearings — Thin-walled half bearings with or
without flange —
Part 2:
Measurement of wall thickness and flange thickness
1 Scope

This part of ISO 3548 specifies in accordance with ISO 12301 the checking of the wall-thickness of

thin-walled half bearings with or without flange and describes the necessary checking methods

and measuring equipment. This standard applies to a maximum bearing diameter of 150 mm. If this

standard should be applied to bigger diameter, an agreement between supplier and user is necessary.

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 3548-1, Plain bearings — Thin-walled half bearings with or without flange — Part 1: Tolerances, design

features and methods of test

ISO 12301, Plain bearings — Quality control techniques and inspection of geometric

...

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