prEN ISO 22882

• Abstract:

  ISO 22882:2016 specifies the technical requirements, the appropriate dimensions and the requirements for the testing of swivel castors for hospital beds with a wheel diameter of 100 mm or more and which have a central locking device. Swivel castors may be used with the main principal dimensions.

• Status: Not Published
• Publication Date: 05-Dec-2027
• ICS: 11.140 - Hospital equipment
• Technical Committee: CEN/SS I17 - Machinery in general (including safety)
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 08-Sep-2026
• Completion Date: 08-Sep-2026
• Ref Project: oSIST prEN ISO 22882:2026 - Castors and wheels - Requirements for swivel castors for hospital beds (ISO/DIS 22882:2026)

• Revises: EN 12531:1998 - Castors and wheels - Hospital Bed Castors
• Effective Date: 26-Nov-2025

prEN ISO 22882 is a CEN/ISO document for swivel castors used on hospital beds. It specifies the technical requirements, dimensions and test requirements for swivel castors with a wheel diameter of 100 mm or more and a central locking device. In practice, it tells manufacturers, test laboratories and buyers what to design, measure and verify for these castors.

What does prEN ISO 22882 specify?

prEN ISO 22882 covers the castors themselves, their key dimensions and the tests used to check performance. The document is organized into clauses on scope, normative references, terms and definitions, dimensions and classification, testing, and marking, followed by a bibliography.

Clause 4 gives the characteristic dimensions and classification points. Clause 5 sets the test sequence, conditions, methods and acceptance criteria. Clause 6 covers product marking, including special marking for electrically conductive and antistatic products.

What are the key requirements of prEN ISO 22882?

Dimensions and configuration

prEN ISO 22882 fixes the main geometry for hospital-bed swivel castors in Clause 4. The document uses wheel diameter, overall height, offset, fixing system and load capacity as the main characteristics.

The dimension table and figures define the permitted principal dimensions for wheel diameters of 100, 125, 150 and 200 mm. This matters because the castor must fit the bed design and meet the stated test conditions.

Clause 4.3 also covers the fixing system with optional operating control for central locking. It identifies the stem length, stem diameter, threaded-hole position, thread size and, for the operating control, the hexagon-hole position, size and working angle. In practice, this tells designers what interface features have to be controlled.

Test conditions and performance checks

Clause 5 says the test methods and apparatus come from ISO 22878:2004. Tests are carried out at room temperature between 15 °C and 28 °C after conditioning the samples for 24 h at 40 % to 70 % relative humidity. That makes test results more comparable between labs.

The test sequence in Table 2 depends on the castor type. Some tests apply to all castors, while others apply only to castors with antistatic/electrically conductive properties or a central locking/braking device.

The key performance checks include:

• initial wheel play and initial swivel play
• electrical resistance for conductive or antistatic products
• fatigue, efficiency and repeat checks for wheel braking and/or locking
• static and dynamic tests
• final wheel wear play and final swivel wear play

These checks show whether the castor still works after load, motion and repeated locking actions.

Acceptance criteria and marking

The document gives pass/fail limits for play, resistance, deformation, braking and wear. For example, it limits initial and final play, sets an electrical resistance criterion for conductive or antistatic products, and requires no permanent deformation that harms performance after static and dynamic testing.

Clause 6 requires permanent product marking with the manufacturer name or trademark. Electrically conductive products are marked with a yellow mark and/or “- C -”, and antistatic products with a white mark and/or “- A -”. That helps users identify the castor type on the hospital bed.

What terms does prEN ISO 22882 define?

prEN ISO 22882 uses the terms and definitions from ISO 22877 and ISO 22878. Key terms in the document include:

• Wheel diameter - the nominal wheel size used to set dimensions and test values.
• Overall height - the total height of the castor assembly.
• Offset - the distance shown in the dimension figures that affects steering geometry.
• Fixing system - the stem and related features used to mount the castor to the bed.
• Load capacity - the maximum load, in newtons, that the wheel or castor can carry while meeting the acceptance criteria.
• Conductive - a product marked for electrical conductivity.
• Antistatic - a product marked to reduce static charge buildup.

Who uses prEN ISO 22882?

Manufacturers of hospital beds and castors use prEN ISO 22882 when designing the castor interface, load capacity and locking functions. Test laboratories use it to carry out the specified play, resistance, fatigue, static and dynamic tests.

Quality managers and buyers use it to specify what kind of swivel castor is acceptable for a hospital bed. It is also relevant for anyone checking marking, traceability and compatibility with a central locking system.

What changed in prEN ISO 22882 from the previous edition?

prEN ISO 22882 replaces ISO 22882:2016, and the foreword says the new edition is technically revised. The stated changes are:

• fixing systems with the option for central locking were added in 4.3
• a new Figure 2 was added in 4.2 for a stem with operating control for central locking
• Figure 3 was added to illustrate different locking device systems
• subclauses on values and tolerances were merged
• Table 3 and Table 12 were revised so wheel diameters are calculated
• the electrical resistance acceptance criteria were completely revised
• the locking-action frequency in 5.6.2 was reduced and the number of actions now accounts for maximum switching angle
• exposure time was added in 5.7.2 and 5.8.2
• the directional-locking force value was added in 5.8.2
• the tolerance for t in 5.9.2 was reduced
• the pause in 5.10.2 was aligned with the running period
• Clause 6 “conformity” was deleted

Which standards are used with prEN ISO 22882?

prEN ISO 22882 cites two normative references:

• ISO 22877 - provides the vocabulary, symbols and multilingual terminology used by the document
• ISO 22878:2004 - provides the test methods and apparatus used for the required castor tests

What does the prEN ISO 22882 document contain?

prEN ISO 22882 contains dimension tables, figures and test tables that support design and verification. Figures 1 to 3 show the castor geometry and locking-system arrangements, while Tables 1 to 13 provide the dimensional data, test values and acceptance criteria.

Clause 5 includes the detailed test sequence, conditioning rules and the procedure structure for each performance check. The document also includes formulas or calculation rules for play, resistance-related checks and wear limits, plus the marking rules needed for product identification and for conductive or antistatic castors.

SLOVENSKI STANDARD
01-september-2026
Kolesca in kolesa - Zahteve za vrtljiva kolesca za bolniške postelje (ISO/DIS
22882:2026)
Castors and wheels - Requirements for swivel castors for hospital beds (ISO/DIS
22882:2026)
Rollen und Räder - Anforderungen für Krankenbettenrollen (ISO/DIS 22882:2026)
Roues et roulettes - Exigences pour roulettes pour lits d'hôpitaux (ISO/DIS 22882:2026)
Ta slovenski standard je istoveten z: prEN ISO 22882
ICS:
11.140 Oprema bolnišnic Hospital equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 22882
ISO/TC 110
Castors and wheels —
Secretariat: DIN
Requirements for swivel castors for
Voting begins on:
hospital beds.
2026-06-16
Roues et roulettes — Exigences pour roulettes pour lits
Voting terminates on:
d'hôpitaux
2026-09-08
ICS: 11.140
THIS DOCUMENT IS A DRAFT CIRCULATED
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Reference number
ISO/DIS 22882:2026(en)
DRAFT
ISO/DIS 22882:2026(en)
International
Standard
ISO/DIS 22882
ISO/TC 110
Castors and wheels —
Secretariat: DIN
Requirements for swivel castors for
Voting begins on:
hospital beds.
Roues et roulettes — Exigences pour roulettes pour lits
Voting terminates on:
d'hôpitaux
ICS: 11.140
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
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BE CONSIDERED IN THE LIGHT OF THEIR
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Published in Switzerland Reference number
ISO/DIS 22882:2026(en)
ii
ISO/DIS 22882:2026(en)
Contents Page
Foreword .v
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 (optional with operating control for central locking) .3
4.4 Load capacity .4
5 Requirements for testing . 4
5.1 General .4
5.2 Standard conditions .4
5.2.1 Environmental conditions .4
5.2.2 Test sequence.5
5.3 Initial wheel play .5
5.3.1 Test objectives, apparatus and procedures .5
5.3.2 Test values .5
5.3.3 Acceptance criteria .5
5.4 Initial swivel play .6
5.4.1 Test objectives, apparatus and procedures .6
5.4.2 Acceptance criteria .6
5.5 Electrical resistance test .6
5.5.1 Test objectives, apparatus and procedures .6
5.5.2 Test values and tolerances .6
5.5.3 Acceptance criteria .6
5.6 Fatigue test for locking/braking device .6
5.6.1 Test objectives, apparatus and procedures .6
5.6.2 Test values and tolerances .6
5.6.3 Acceptance criteria .7
5.7 Efficiency check of wheel braking and/or locking device .7
5.7.1 Test objectives, apparatus and procedures .7
5.7.2 Test values and tolerances .7
5.7.3 Acceptance criteria .7
5.8 Efficiency check of swivel braking and/or locking device .7
5.8.1 Test objectives, apparatus and procedures .7
5.8.2 Test values and tolerances .7
5.8.3 Acceptance criteria .8
5.9 Static test .8
5.9.1 Test objectives, apparatus and procedures .8
5.9.2 Test values and tolerances .8
5.9.3 Acceptance criteria .8
5.10 Dynamic test .8
5.10.1 Test objectives, apparatus and procedures .8
5.10.2 Test values and tolerances .8
5.10.3 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 wear play after dynamic test .9
5.13.1 Test objectives, apparatus and procedures .9
5.13.2 Acceptance criteria .9
5.14 Final swivel wear play .10
5.14.1 Test objectives, apparatus and procedures .10
5.14.2 Acceptance criteria .10

iii
ISO/DIS 22882:2026(en)
6 Marking . .10
6.1 Product marking .10
6.2 Marking of electrically conductive or antistatic castors/wheels .10
Bibliography .11

iv
ISO/DIS 22882:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
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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
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ISO draws attention to the possibility that the implementation of this document may involve the use
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