Plain bearings — Pad materials for tilting pad bearings

This document specifies requirements for some commonly used pad lining materials utilized on tilting pad bearings. The requirements in this document are expressed by specifying the chemical composition of the lining materials. Other lining materials can be used if they have been proven to be equally suitable at the required operating conditions. Descriptive characteristics of the lining materials are given along with the appropriate selection of pad backing and pivot materials.

Paliers lisses — Matériaux des patins pour paliers à patins oscillants

General Information

Status
Published
Publication Date
28-Jul-2021
Current Stage
6060 - International Standard published
Start Date
29-Jul-2021
Completion Date
29-Jul-2021
Ref Project

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INTERNATIONAL ISO
STANDARD 14287
Third edition
2021-07
Plain bearings — Pad materials for
tilting pad bearings
Paliers lisses — Matériaux des patins pour paliers à patins oscillants
Reference number
ISO 14287:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 14287:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 14287:2021(E)
Contents Page

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

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

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

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

4 Requirements .......................................................................................................................................................................................................... 1

4.1 Lining materials ..................................................................................................................................................................................... 1

4.1.1 Chemical composition ................................................................................................................................................. 1

4.1.2 Mechanical properties ................................................................................................................................................ 2

4.1.3 Selection of lining materials ................................................................................................................................... 2

4.2 Backing materials ................................................................................................................................................................................. 2

4.3 Pivot materials ........................................................................................................................................................................................ 2

5 Designation ................................................................................................................................................................................................................ 4

Annex A (informative) Guidance on properties and selection of materials ................................................................5

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 14287:2021(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 7,

Special types of plain bearings.

This third edition cancels and replaces the second edition (ISO 14287:2018), which has been technically

and editorially revised. The main changes compared to the previous edition are as follows:

— The scope has been changed to allow the use of other materials if they have been proven to be

suitable for the operating requirements.

— The document has been rewritten so that the format is consistent with other standards related to

materials for multilayer plain bearings.

— The composition of SnSb8Cu4 referenced in Table 1 has been corrected and alternative lining

materials have been added to Tables 1, 2, 3 and 4.

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 2021 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 14287:2021(E)
Plain bearings — Pad materials for tilting pad bearings
1 Scope

This document specifies requirements for some commonly used pad lining materials utilized on tilting

pad bearings. The requirements in this document are expressed by specifying the chemical composition

of the lining materials. Other lining materials can be used if they have been proven to be equally suitable

at the required operating conditions. Descriptive characteristics of the lining materials are given along

with the appropriate selection of pad backing and pivot materials.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.

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

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Requirements
4.1 Lining materials
4.1.1 Chemical composition

The chemical composition of alloy elements and compounds of the materials covered by this document

shall be within the limits specified in Tables 1, 2, 3 and 4.

If the purchaser's requirements necessitate limits for any element not specified, or limits different from

those already specified, these should be agreed upon between manufacturer and purchaser.

WARNING — Lead's (Pb) toxicity was recognized, and its use has since been phased out of many

applications. However, many countries still allow the sale of products that expose humans to

lead. Lead is a neurotoxin.
GHS 07 GHS 08 GHS 09
© ISO 2021 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 14287:2021(E)
4.1.2 Mechanical properties

Mechanical properties of linings can be expected to vary in individual cases due to the range of

possible elemental and compound compositions of a specified alloy, the marked influence exerted by

the cooling conditions an alloy experiences and the influence of the backing material. Consequently,

material properties for lining materials shall be the subject of agreement between the manufacturer

and purchaser.
4.1.3 Selection of lining materials
Guidance on properties and selection materials is given in Annex A.
4.2 Backing materials

Requirements for suitable backing materials can be found in ISO 6280. Other backing materials can be

used if they have been proven in service and an optimum bond, between the backing material and the

lining material, is ensured by control of the manufacturing process.
4.3 Pivot materials

Pivot materials are usually selected in combination with the type of pivot design in order to minimize

pivot wear and ensure pivot stresses remain within acceptable limits. In some cases, the requirements

for the pivot material cannot be satisfied by the chosen pad backing material, leading to the use

of a separate pivot, or ‘insert’. Various factors determine the type of pivot to be used, including the

magnitude of the load, requirements for self-aligning capability and the degree of pivot flexibility

permitted for the application. Due to these factors, pivot materials cannot be specified in isolation of the

design and, consequentl
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 14287
ISO/TC 123/SC 7
Plain bearings — Pad materials for
Secretariat: JISC
tilting pad bearings
Voting begins on:
2021­04­26
Paliers lisses — Matériaux des patins pour paliers à patins oscillants
Voting terminates on:
2021­06­21
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 14287:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 14287:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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
CH­1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 14287:2021(E)
Contents Page

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

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

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

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

4 Requirements .......................................................................................................................................................................................................... 1

4.1 Lining materials ..................................................................................................................................................................................... 1

4.1.1 Chemical composition ................................................................................................................................................. 1

4.1.2 Mechanical properties ................................................................................................................................................ 2

4.1.3 Selection of lining materials ................................................................................................................................... 2

4.2 Backing materials ................................................................................................................................................................................. 2

4.3 Pivot materials ........................................................................................................................................................................................ 2

5 Designation ................................................................................................................................................................................................................ 3

Annex A (informative) Guidance on properties and selection of materials ................................................................5

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 14287:2021(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 non­governmental, 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 7,

Special types of plain bearings.

This third edition cancels and replaces the second edition (ISO 14287:2018), which has been technically

and editorially revised. The main changes compared to the previous edition are as follows:

— The scope has been changed to allow the use of other materials if they have been proven to be

suitable for the operating requirements.

— The document has been rewritten so that the format is consistent with other standards related to

materials for multilayer plain bearings.

— The composition of SnSb8Cu4 referenced in Table 1 has been corrected and alternative lining

materials have been added to Tables 1, 2, 3 and 4.

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 2021 – All rights reserved
---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 14287:2021(E)
Plain bearings — Pad materials for tilting pad bearings
1 Scope

This document specifies requirements for some commonly used pad lining materials utilized on tilting

pad bearings. The requirements in this document are expressed by specifying the chemical composition

of the lining materials. Other lining materials can be used if they have been proven to be equally suitable

at the required operating conditions. Descriptive characteristics of the lining materials are given along

with the appropriate selection of pad backing and pivot materials.
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 6280, Plain bearings — Requirements and guidance on backings for thick-walled multilayer bearings

3 Terms and definitions
No terms and definitions are listed in this document.

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

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Requirements
4.1 Lining materials
4.1.1 Chemical composition

The chemical composition of alloy elements and compounds of the materials covered by this document

shall be within the limits specified in Tables 1, 2, 3 and 4.

If the purchaser's requirements necessitate limits for any element not specified, or limits different from

those already specified, these should be agreed upon between manufacturer and purchaser.

WARNING — Lead's (Pb) toxicity was recognized, and its use has since been phased out of many

applications. However, many countries still allow the sale of products that expose humans to

lead. Lead is a neurotoxin.
GHS 07 GHS 08 GHS 09
© ISO 2021 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO/FDIS 14287:2021(E)
4.1.2 Mechanical properties

Mechanical properties of linings can be expected to vary in individual cases due to the range of

possible elemental and compound compositions of a specified alloy, the marked influence exerted by

the cooling conditions an alloy experiences and the influence of the backing material. Consequently,

material properties for lining materials shall be the subject of agreement between the manufacturer

and purchaser.
4.1.3 Selection of lining materials
Guidance on properties and selection materials is given in Annex A.
4.2 Backing materials

Requirements for suitable backing materials should be found in ISO 6280. Other backing materials can

be used if they have been proven in service and an optimum bond, between the backing material and

the lining material, is ensured by control of the manufacturing process.
4.3 Pivot materials

Pivot materials are usually selected in combination with the type of pivot design in order to minimize

pivot wear and ensure pivot stresses remain withi
...

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