ISO 21433:2018

INTERNATIONAL ISO
STANDARD 21433
First edition
2018-10
Plain bearings — Handling of plain
bearings
Paliers lisses — Manipulation des paliers lisses
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Storage and transportation . 1
4.1 General . 1
4.2 Storage and transportation by packing . 1
4.2.1 General. 1
4.2.2 Purpose of packing . . 1
4.2.3 Packing method . 2
4.2.4 Packing material . 2
4.2.5 Unpacking . 2
4.3 Storage and transportation in containers. 2
4.3.1 General. 2
4.3.2 Purpose of storage and transportation in containers . 2
4.3.3 Points to notice at storage and transportation . 3
4.3.4 Other methods of storage and transportation . 3
4.3.5 Attachment of test and quality certificate . 3
4.4 Selection of rust inhibitors and cleaning agents . 3
4.5 Storage environment . 3
4.5.1 Warehouse or storage room. 3
4.5.2 Ambient temperature of storage room . 3
4.5.3 Environmental humidity for storage room . 3
4.5.4 First-in first-out . 4
4.6 Handling. 4
4.7 Documentation . 4
5 Method of installation of plain bearings. 4
5.1 Points to consider during plain bearings installation . 4
5.1.1 Plain bearings . 4
5.1.2 Housing . 4
5.1.3 Press-fit method . 4
5.1.4 Screw –fixing method . 5
5.1.5 Keyed joint method . . 5
5.1.6 Retaining ring fixing method . 5
5.1.7 Shrink fitting by cooling . 5
5.1.8 Shrink fitting by heating . 5
5.1.9 Points to notice during installation of plain bearings . 6
5.1.10 Points to notice after installation of plain bearings. 6
5.2 Mating shaft and assembly inspection . 6
5.2.1 Mating shaft . . 6
5.2.2 Installation of shaft . 6
5.2.3 Check of operation . 6
6 Operation . 6
6.1 Cleaning (flushing) of lubrication system . . 6
6.2 Running-in . 6
6.3 Supervision during operation . 7
6.3.1 Control and check items . 7
6.3.2 Record . 7
7 Replacement of plain bearings . 7
7.1 General . 7
7.2 Dismounting of plain bearings . 7
7.3 Replacement by new plain bearings . 8
Bibliography . 9
iv © ISO 2018 – All rights reserved

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
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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
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URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 123, Plain bearings, Subcommittee SC 6,
Terms and common items.
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.
Introduction
The purpose of this document is to give appropriate methods of handling plain bearings. Alternative
practises may be adopted as agreed between bearing suppliers and their customers.
Inappropriate handling can cause premature damage to bearings and should be avoided.
This document provides four clauses for the handling of plain bearings:
— storage and transportation;
— installation (fitting);
— operation (running);
— replacement (exchange of bearing).
vi © ISO 2018 – All rights reserved

INTERNATIONAL STANDARD ISO 21433:2018(E)
Plain bearings — Handling of plain bearings
1 Scope
This document specifies requirements and guidance on the storage, transportation, handling,
installation, operation and replacement of plain bearings and related parts.
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 4378-1, Plain bearings — Terms, definitions, classification and symbols — Part 1: Design, bearing
materials and their properties
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4378-1 apply.
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 http: //www .electropedia .org/
4 Storage and transportation
4.1 General
The plain bearings are stored and transported after manufacture until installation into machines. In
this period, they shall be protected from damage, deterioration, deformation and contamination by
foreign matter.
4.2 Storage and transportation by packing
4.2.1 General
The plain bearings are stored and transported by using sheets, bags or boxes. The environment shall be
taken into consideration and respected when packing materials are manufactured, e.g. by implementing
an environmental management system such as ISO 14001.
4.2.2 Purpose of packing
Plain bearings are protected against damage by impact load during storage and transportation and
against rust and contaminants such as dust and moisture by using packing materials with a rust-
preventive function.
On the outside of the package, the contents should be indicated (type, name, part number, size, number
of pieces, production lot number, etc.) in order to identify the contents without removing the protective
packaging.
Packaging should be robust enough to withstand long-term storage without damage to the contents.
When bearings of the same type and size are packed in groups, indication of the contents should be
the same as when individually packed. However, the number of packed plain bearings should also be
indicated clearly on each pack.
4.2.3 Packing method
Plain bearings should be packed so that they can be easily unpacked at the receiving inspection by
the users or before their installation.
...