Plain bearings -- Tolerances

This document specifies tolerances on form and position as well as the surface roughness of shafts, flanges and thrust collars as used in plain bearing units. It is applicable to journal or thrust plain bearing units or to a combination of both, installed either horizontally or vertically. This document is not applicable to crankshaft bearing units in combustion engines.

Paliers lisses -- Tolérances

Drsni ležaji - Tolerance - 2. del: Tolerance za obliko, lego in površinsko hrapavost gredi in opornih grebenov

General Information

Status
Published
Publication Date
23-Apr-2019
Current Stage
6060 - International Standard published
Start Date
21-Mar-2019
Completion Date
24-Apr-2019

RELATIONS

Effective Date
02-Jun-2018

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SLOVENSKI STANDARD
SIST ISO 12129-2:2020
01-november-2020

Drsni ležaji - Tolerance - 2. del: Tolerance za obliko, lego in površinsko hrapavost

gredi in opornih grebenov

Plain bearings - Tolerances - Part 2: Tolerances on form and position and surface

roughness for shafts and thrust collars

Paliers lisses - Tolérances - Partie 2: Tolérances de forme et de position et rugosité de

surface des arbres et collets de butée
Ta slovenski standard je istoveten z: ISO 12129-2:2019
ICS:
17.040.10 Tolerance in ujemi Limits and fits
21.100.10 Drsni ležaji Plain bearings
SIST ISO 12129-2:2020 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST ISO 12129-2:2020
---------------------- Page: 2 ----------------------
SIST ISO 12129-2:2020
INTERNATIONAL ISO
STANDARD 12129-2
Second edition
2019-04
Plain bearings — Tolerances —
Part 2:
Tolerances on form and position and
surface roughness for shafts and
thrust collars
Paliers lisses — Tolérances —
Partie 2: Tolérances de forme et de position et rugosité de surface des
arbres et collets de butée
Reference number
ISO 12129-2:2019(E)
ISO 2019
---------------------- Page: 3 ----------------------
SIST ISO 12129-2:2020
ISO 12129-2:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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 2019 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 12129-2:2020
ISO 12129-2:2019(E)
Contents Page

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

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

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

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

4 General ............................................................................................................................................................................................................................ 1

5 Dimensions ................................................................................................................................................................................................................. 1

6 Design .............................................................................................................................................................................................................................. 4

7 Testing ............................................................................................................................................................................................................................. 4

8 Designation ................................................................................................................................................................................................................ 4

Bibliography ................................................................................................................................................................................................................................ 5

© ISO 2019 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 12129-2:2020
ISO 12129-2:2019(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 3,

Dimensions, tolerances and construction details.

This second edition cancels and replaces the first edition (ISO 12129-2:1995), which has bee

...

INTERNATIONAL ISO
STANDARD 12129-2
Second edition
2019-04
Plain bearings — Tolerances —
Part 2:
Tolerances on form and position and
surface roughness for shafts and
thrust collars
Paliers lisses — Tolérances —
Partie 2: Tolérances de forme et de position et rugosité de surface des
arbres et collets de butée
Reference number
ISO 12129-2:2019(E)
ISO 2019
---------------------- Page: 1 ----------------------
ISO 12129-2:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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 2019 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 12129-2:2019(E)
Contents Page

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

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

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

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

4 General ............................................................................................................................................................................................................................ 1

5 Dimensions ................................................................................................................................................................................................................. 1

6 Design .............................................................................................................................................................................................................................. 4

7 Testing ............................................................................................................................................................................................................................. 4

8 Designation ................................................................................................................................................................................................................ 4

Bibliography ................................................................................................................................................................................................................................ 5

© ISO 2019 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 12129-2:2019(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 3,

Dimensions, tolerances and construction details.

This second edition cancels and replaces the first edition (ISO 12129-2:1995), which has been technically

revised. The main changes compared to the previous edition are as follows:
— the title has been improved;
— normative references have been updated;
— the limitation to thick-wall bearings has been removed;

— the limitation to ISO 7902 for calculation of minimum lubricant film thickness has been removed;

— the case of different accuracy grades of journal und thrust collar has been explicitly added.

A list of all parts in the ISO 12129 series can be found on the ISO we
...

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