ISO 22882:2016

INTERNATIONAL ISO
STANDARD 22882
Second edition
2016-12-01
Castors and wheels — Requirements
for castors for hospital beds
Roues et roulettes — Exigences pour roulettes pour lits d’hôpitaux
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions and classification . 1
4.1 Characteristics . 1
4.2 Dimensions . 1
4.3 Fixing system . 2
4.4 Load capacity . 3
5 Requirements for testing . 3
5.1 General . 3
5.2 Standard conditions . 3
5.2.1 Environmental conditions . 3
5.2.2 Test sequence . . . 3
5.3 Initial wheel play . 4
5.3.1 Test objectives, apparatus and procedures . 4
5.3.2 Acceptance criteria . 4
5.4 Initial swivel play . 4
5.4.1 Test objectives, apparatus and procedures . 4
5.4.2 Acceptance criteria . 4
5.5 Electrical resistance test . 4
5.5.1 Test objectives, apparatus and procedures . 4
5.5.2 Test values . 4
5.5.3 Tolerances . 5
5.5.4 Acceptance criteria . 5
5.6 Fatigue test for locking/braking device . 5
5.6.1 Test objectives, apparatus and procedures . 5
5.6.2 Test values . 5
5.6.3 Tolerances . 5
5.6.4 Acceptance criteria . 6
5.7 Efficiency check of wheel braking and/or locking device . 6
5.7.1 Test objectives, apparatus and procedures . 6
5.7.2 Test values . 6
5.7.3 Tolerances . 6
5.7.4 Acceptance criteria . 6
5.8 Efficiency check of swivel braking and/or locking device. 6
5.8.1 Test objectives, apparatus and procedures . 6
5.8.2 Test values . 6
5.8.3 Tolerances . 7
5.8.4 Acceptance criteria . 7
5.9 Static test . 7
5.9.1 Test objectives, apparatus and procedures . 7
5.9.2 Test values . 7
5.9.3 Tolerances . 7
5.9.4 Acceptance criteria . 8
5.10 Dynamic test. 8
5.10.1 Test objectives, apparatus and procedures . 8
5.10.2 Test values . 8
5.10.3 Tolerances . 8
5.10.4 Acceptance criteria . 9
5.11 Efficiency check of wheel braking and/or locking device . 9
5.12 Efficiency check of swivel braking and/or locking device. 9
5.13 Final wheel play . 9
5.13.1 Test objectives, apparatus and procedures . 9
5.13.2 Acceptance criteria . 9
5.14 Final swivel play.10
5.14.1 Test objectives, apparatus and procedures .10
5.14.2 Acceptance criteria .10
6 Conformity .10
7 Marking .10
7.1 Product marking .10
7.2 Marking of electrically conductive or antistatic castors/wheels .10
Bibliography .11
iv © ISO 2016 – 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
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
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