BS ISO 22880-2016 Castors and wheels Requirements for castors for swivel chairs《脚轮和轮子 转椅脚轮要求》.pdf

1、BS ISO 22880:2016Castors and wheels Requirements for castors forswivel chairsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 22880:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 22880:2016. The UK participation in i

2、ts preparation was entrusted to Technical Committee MHE/7/-/1, Castors and wheels.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its c

3、orrect application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 92965 6 ICS 97.140 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Str

4、ategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 22880:2016 ISO 2016Castors and wheels Requirements for castors for swivel chairsRoues et roulettes Exigences pour roulettes pour siges de bureauxINTERNATIONAL STANDARDISO22880Second e

5、dition2016-12-01Reference numberISO 22880:2016(E)BS ISO 22880:2016ISO 22880:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any

6、 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 ISOs member body in the country of the requester.ISO copyright officeCh. de Blando

7、nnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 22880:2016ISO 22880:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Dimensions and classification 14.1 Characteristics . 14.2 Fi

8、xing system 14.3 Castor type 14.3.1 General 14.3.2 Type H . 24.3.3 Type W 24.3.4 Type C 24.3.5 Type U . 34.4 Dimensions . 35 Requirements for testing . 35.1 General . 35.2 Standard conditions . 35.2.1 Environmental conditions . 35.2.2 Test sequences . 45.3 Impact performance . 45.3.1 Test objectives

9、, apparatus and procedures . 45.3.2 Test values . 45.3.3 Tolerances 45.3.4 Acceptance criteria 55.4 Electrical resistance test . 55.4.1 Test objectives, apparatus and procedures . 55.4.2 Test values . 55.4.3 Tolerances 55.4.4 Acceptance criteria 55.5 Contact pressure 55.5.1 Test objectives, apparatu

10、s and procedures . 55.5.2 Test values . 55.5.3 Tolerances 65.5.4 Acceptance criteria 65.6 Item retention 65.6.1 Test objectives, apparatus and procedures . 65.6.2 Test values . 65.6.3 Acceptance criteria 65.7 Static load performance 65.7.1 Test objectives, apparatus and procedures . 65.7.2 Test valu

11、es . 75.7.3 Tolerances 75.7.4 Acceptance criteria 75.8 Brake performance of Type U castors . 75.8.1 Test objectives, apparatus and procedures . 75.8.2 Test values . 75.8.3 Tolerances 75.8.4 Acceptance criteria 85.9 Dynamic test 85.9.1 Test objectives, apparatus and procedures . 85.9.2 Test values .

12、8 ISO 2016 All rights reserved iiiContents PageBS ISO 22880:2016ISO 22880:2016(E)5.9.3 Tolerances 85.9.4 Acceptance criteria 95.10 Long distance running 95.10.1 Test objectives, apparatus and procedures . 95.10.2 Test values . 95.10.3 Tolerances 95.10.4 Acceptance criteria 95.11 Rolling resistance .

13、 105.11.1 Test objectives, apparatus and procedures 105.11.2 Test values 105.11.3 Tolerances . 105.11.4 Acceptance criteria .105.12 Swivel resistance 105.12.1 Test objectives, apparatus and procedures 105.12.2 Test values 105.12.3 Tolerances . 105.12.4 Acceptance criteria .116 Conformity .117 Markin

14、g .117.1 Product marking . 117.2 Marking of electrically conductive or antistatic castors/wheels 11Bibliography .12iv ISO 2016 All rights reservedBS ISO 22880:2016ISO 22880:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

15、(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, g

16、overnmental 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 main

17、tenance 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).Atte

18、ntion 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 Introductio

19、n 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 on the meaning of ISO specific terms and expressions related to conformi

20、ty assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 110, Industrial trucks.This second edition r

21、esults from the reinstatement of ISO 22880:2004, which was withdrawn in 2014 and with which it is technically identical. ISO 2016 All rights reserved vBS ISO 22880:2016ISO 22880:2016(E)IntroductionThe industry stakeholders have expressed the need for this important International Standard. Therefore,

22、 the interested parties agreed to republish the withdrawn document as a new edition.In order to ensure that the International Standard will be actively used in the ISO member countries worldwide, procedures may be necessary to replace the existing national standards and technical regulations by the

23、International Standard.Only by these actions will there be the guarantee that products in accordance with International Standards can be shipped worldwide freely without any technical barriers.vi ISO 2016 All rights reservedBS ISO 22880:2016Castors and wheels Requirements for castors for swivel chai

24、rs1 ScopeThis document specifies the technical requirements, the appropriate dimensions and the requirements for the testing of castors, with or without braking devices, which will normally be used on swivel chairs.2 Normative referencesThe following documents are referred to in the text in such a w

25、ay 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 22878:2004, Castors and wheels Test methods and apparatus

26、3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 22877 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: a

27、vailable at http:/www.iso.org/obpNOTE Symbols are given in ISO 22878:2004, Annex A.4 Dimensions and classification4.1 CharacteristicsThe characteristics of a castor are as follows: fixing system; castor type; dimensions.4.2 Fixing systemThe fixing system includes the stem and circlip, threaded stem

28、and other fixing systems.4.3 Castor type4.3.1 GeneralCastors are classified into four types (H, W, C and U). These all apply to the castor designs illustrated in Figure 1 and Figure 2.INTERNATIONAL STANDARD ISO 22880:2016(E) ISO 2016 All rights reserved 1BS ISO 22880:2016ISO 22880:2016(E)Figure 1 Si

29、ngle-wheel swivel castorFigure 2 Twin-wheel castor4.3.2 Type HCastors with plain wheels are defined as Type H, hard tread. The wheel shall be one colour over the entire surface.These castors are suitable for carpeted floors.4.3.3 Type WCastors with resilient tyred wheels are defined as Type W, soft

30、tread. The tread shall be of a clearly different colour from the wheel centre.These castors are suitable for hard stone, wooden or tiled floors, or those featuring non-textiled covering.4.3.4 Type CThese castors are antistatic or electrically conductive.2 ISO 2016 All rights reservedBS ISO 22880:201

31、6ISO 22880:2016(E)These castors should have either Type H or Type W wheels. They may also conform to Type U.4.3.5 Type UThese castors are for swivel chairs with a built-in braking mechanism.The castors should have either Type H or Type W wheels. They may also conform to Type C.NOTE 1 For certain app

32、lications, castors for swivel chairs require a built-in braking mechanism that is released when a person sits on the chair to which the castors are fitted, allowing ease of mobility in that position. This braking action is automatically re-applied as the person leaves the chair to prevent the chair

33、rolling away unintentionally.NOTE 2 The decision regarding the type of castors to be fitted to swivel chairs depends on the chair design and the type of floors and covering in use.Castors with permanent braking systems are not acceptable.4.4 DimensionsFigure 1 and Figure 2 show typical castor design

34、s. Table 1 shows the specified dimensions and the corresponding symbols.Table 1Dimensions in millimetresDescription Castor designs Symbol DimensionWheel diameter All D min. 48Offset All dFmin. 18Tread widthSingle wheelbT3min. 18Twin wheel min. 2 7External corner radiusAll Type Hr1min. 6All Type W mi

35、n. 1,5External corner radius All r1min. 1,5Tread curvature Single wheel castors r3min. 110Wheel spacing All twin wheel de15 to 22Minimum stem diameter All DP10 mm or M105 Requirements for testing5.1 GeneralTest methods and apparatus shall be as specified in ISO 22878.The test values detailed are the

36、 minimum required for acceptance5.2 Standard conditions5.2.1 Environmental conditionsTests shall be carried out at a temperature between 17 C and 23 C. During the 24 h prior to the test, the sample(s) shall remain at the above temperature in an environment with a relative humidity between 40 % and 7

37、0 %.Sample(s) shall not be artificially cooled during testing. ISO 2016 All rights reserved 3BS ISO 22880:2016ISO 22880:2016(E)5.2.2 Test sequencesTests on electrical resistance, impact, contact pressure, stem retention and static load shall all be carried out with new castors each time.Another new

38、castor is then taken and the remaining tests shall be carried out in the sequence shown in Table 2.Table 2Reference in this documentTest sequence Castor typesTest procedure given in ISO 22878:20045.3 Impact performance All 4.125.4 Electrical resistance Type C castors 4.45.5 Contact pressure All 4.10

39、5.6 Stem retention All 4.175.7 Static load performance All 4.95.8 Brake performance Type U castors (first test) 4.115.8 Brake performance Type U castors (second test) 4.115.9 Dynamic All 4.135.10 Long distance running All 4.145.11 Rolling resistance All 4.155.12 Swivel resistance All 4.165.3 Impact

40、performance5.3.1 Test objectives, apparatus and proceduresThese shall be as specified in ISO 22878:2004, 4.12.5.3.2 Test valuesThe test values shall be as listed in Table 3.Table 3Symbol Value Descriptionm 5 kg Free-falling massh2200 mm Drop height5.3.3 TolerancesThe tolerances shall be as shown in

41、Table 4.Table 4Symbol UnitToleranceAcceptable Unitm kg02+ %kgh2mm03+mm4 ISO 2016 All rights reservedBS ISO 22880:2016ISO 22880:2016(E)5.3.4 Acceptance criteriaNo part of a castor shall become detached during the tests. Upon completion of the test, the rolling, pivoting or braking performance shall b

42、e not impaired.5.4 Electrical resistance test5.4.1 Test objectives, apparatus and proceduresThese shall be as specified in ISO 22878:2004, 4.45.4.2 Test valuesThe test values shall be as listed in Table 5.Table 5Symbol Value DescriptionFmaxVariable Load capacityF175 % to 10 % of FmaxTest loadR Varia

43、ble Electrical resistance5.4.3 TolerancesThe tolerances shall be as shown in Table 6.Table 6Symbol UnitToleranceAcceptable UnitF17N02+ %N5.4.4 Acceptance criteriaThe resistance, R, of the sample tested shall be as follows: R 105 for conductive castor(s) or wheel(s); 105 R 107 for antistatic castor(s

44、) or wheels.5.5 Contact pressure5.5.1 Test objectives, apparatus and proceduresThese shall be as specified in ISO 22878:2004, 4.10.5.5.2 Test valuesThe test values shall be as listed in Table 7. ISO 2016 All rights reserved 5BS ISO 22880:2016ISO 22880:2016(E)Table 7Symbol Value DescriptionF2325 N Te

45、st loadty124 h Time of application of the load5.5.3 TolerancesThe tolerances shall be as shown in Table 8.Table 8Symbol UnitToleranceAcceptable UnitF2N02+ %Nty1h015+min5.5.4 Acceptance criteria5.5.4.1 Type H castorsThe average contact pressure exerted by the wheels on the test surface shall not be l

46、ess than 10 N/mm2.5.5.4.2 Type W castorsThe average contact pressure exerted by the wheels on the test surface shall be not less than 3 N/mm2and shall not be more than 5 N/mm2.5.6 Item retention5.6.1 Test objectives, apparatus and proceduresThese shall be as specified in ISO 22878:2004, 4.17.5.6.2 T

47、est valuesThe test values shall be as listed in Table 9.Table 9Symbol Value DescriptionFmin50 N Minimum pull-out force5.6.3 Acceptance criteriaThe force required to remove the stem from the castor shall be greater than Fmin.5.7 Static load performance5.7.1 Test objectives, apparatus and proceduresTh

48、ese shall be as specified in ISO 22878:2004, 4.9.6 ISO 2016 All rights reservedBS ISO 22880:2016ISO 22880:2016(E)5.7.2 Test valuesThe test values shall be as listed in Table 10.Table 10Symbol Value DescriptionF6800 N Test loadty124 h Time of application of the loadty224 h Elapsed time prior to inspe

49、ction5.7.3 TolerancesThe tolerances shall be as shown in Table 11.Table 11Symbol UnitToleranceAcceptable UnitF6N02+ %Nty1h015+minty2h 1 h5.7.4 Acceptance criteriaWheel deformation measured after a time ty2shall not exceed 3 % of the wheel diameter. Upon completion of the test, the rolling, pivoting or braking performance shall not be impaired.5.8 Brake performance of Type U castors5.8.1 Test objectives, apparatus and proceduresThese shall be as specified in ISO 22878:2004, 4.11.5.8.2 Test valuesThe test value