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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12529:1999 The Euro
2、pean Standard EN 12529:1998 has the status of a British Standard ICS 97.140 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Castors and wheels Castors for furniture Castors for swivel chairs Requirements BS EN 12529:1999 This British Standard, having been prepared under the di
3、rection of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 March 1999 BSI 03-1999 ISBN 0 580 30649 6 Amendments issued since publication Amd. No.DateText affected National foreword This British Standard is the English languag
4、e version of EN 12529:1998. The UK participation in its preparation was entrusted to Technical Committee MHE/7, Industrial trucks Safety, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or propo
5、sals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement intern
6、ational or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include a
7、ll the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN tit
8、le page, pages 2 to 7 and a back cover. CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
9、 national Members. Ref. No. 12529:1998 E EUROPEAN STANDARDEN 12529 NORME EUROPE ENNE EUROPA ISCHE NORM September 1998 ICS 97.140 Descriptors: wheels, castors, furniture, seats, office equipment, office furniture, handling equipment, tests, long distance running test, dynamic test, static test, impac
10、t performance, conformity tests English version Castors and wheels Castors for furniture Castors for swivel chairs Requirements Roues et roulettes Roulettes pour meubles Roulettes pour sie ges de bureau Prescriptions Ra der und Rollen Mo belrollen Rollen fu r Drehstu hle Anforderungen This European
11、Standard was approved by CEN on 30th August 1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conce
12、rning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own
13、language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Swed
14、en, Switzerland and United Kingdom. Page 2 EN 12529:1998 BSI 03-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 324, Castors and wheels, the Secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by pu
15、blication of an identical text or by endorsement, at the latest by March 1999, and conflicting national standards shall be withdrawn at the latest by March 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
16、this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Dimensions
17、 and classification3 4.1Fixing system3 4.2Castor type3 4.3Dimensions3 5Requirements4 5.1Standard conditions4 5.2Impact performance5 5.3Electrical resistance test5 5.4Contact pressure5 5.5Stem retention5 5.6Static load performance5 5.7Brake performance of castors type U6 5.8Dynamic test6 5.9Long dist
18、ance running6 5.10 Rolling resistance7 5.11 Swivel resistance7 6Conformity7 7Marking of the product7 7.1Product marking7 7.2Marking of electrically conductive or antistatic castor(s) or wheel(s)7 Page 3 EN 12529:1998 BSI 03-1999 1 Scope This European Standard specifies the technical requirements, th
19、e appropriate dimensions and the requirements for testing. This European Standard applies to castors with or without braking devices that will normally be used on swivel chairs. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publicatio
20、ns. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply only to this European Standard only when incorporated in it by amendment or revisio
21、n. For undated references the latest edition of the publication referred to applies. prEN 1335, Office furniture office work chair. EN 12526:1998, Castors and wheels Vocabulary, recommended symbols and multilingual dictionary. EN 12527:1998, Castors and wheels Test methods and apparatus. 3 Definitio
22、ns For the purpose of this European Standard, definitions and recommended symbols of EN 12526:1998 apply. 4 Dimensions and classification The characteristics of a castor are: fixing system; castor type; dimensions. 4.1 Fixing system The fixing system includes stem and circlip, threaded stem and othe
23、r fixing systems. 4.2 Castor type Castors are classified into four types: 4.2.1 Type H Castors with plain wheels are defined as type H, hard tread. The wheel shall be one colour over the entire surface. NOTEThese castors are suitable for carpeted floors. 4.2.2 Type W Castors with resilient tyred whe
24、els are defined as type W, soft tread. This shall be of a clearly different colour to the wheel centre. NOTEThese castors are suitable for hard stone, wooden or tiled floors or those featuring non-textiled covering. 4.2.3 Type C Castors which are electrically conductive. NOTEThese castors shall have
25、 either type H or type W wheels. They may also conform to type U. 4.2.4 Type U Castors for swivel chairs with a built-in braking mechanism. NOTE 1 For certain applications castors for swivel chairs require a built-in braking mechanism, that is released when a person sits on the chair to which the ca
26、stors 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 rolling away unintentionally. NOTE 2 The decision regarding the type of castors to be fitted to swivel chairs will be dependent on the cha
27、ir design and the type of floors and covering in use. The castors shall have either type H or type W wheels. They may also conform to type C. NOTE 3 Castors with permanent braking systems are not acceptable. 4.3 Dimensions The Figures 1 and 2 show typical castor designs; Table 1 shows the specified
28、castor dimensions. Figure 1 Single-wheel swivel castor Page 4 EN 12529:1998 BSI 03-1999 Table 1 Specified castor dimensions Dimensions in millimetres DescriptionCastor designsSymbolDimension Wheel diameterAllDmin. 48 OffsetAllFmin. 18 Tread widthSingle wheelT3min. 18 Twin wheelmin. 2 3 7 External co
29、rner radiusAll type Hr3min. 6 All type Wmin. 1,5 Internal corner radiusAll twin wheelr4min. 1,5 Tread curvatureAll single wheelr5min. 110 Wheel spacingAll twin wheele15 to 22 Minimum stem diameterAllP10 mm or M10 Table 2 Test sequence for castor types and test procedure reference ReferenceTest seque
30、nceCastors typesTest procedure reference 5.2Impact performanceAll4.12 5.3Electrical resistanceCastors type C4.4 5.4Contact pressureAll4.10 5.7Brake performanceCastors type U (first test)4.11 5.8DynamicAll4.13 5.9Long distance runningAll4.14 5.10Rolling resistanceAll4.15 5.11Swivel resistanceAll4.16
31、5.7Brake performanceCastors type U (second test) 4.11 5.5Stem retentionAll4.17 5.6Static loadAll4.9 Figure 2 Twin wheel swivel castor 5 Requirements Testing requirements for castors and wheels are listed below. Test methods and apparatus are defined in EN 12527:1998. The test values detailed are the
32、 minimum required for acceptance. 5.1 Standard conditions 5.1.1 Environmental conditions Tests shall be carried out at a temperature between 17 8C and 23 8C. 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 %
33、 and 70 %. Sample(s) shall not be artificially cooled during testing. 5.1.2 Test sequence Electrical resistance, impact, contact pressure, stem retention and static load tests shall each be carried out with new castors. Another new castor(s) is taken and the remaining tests carried out in the sequen
34、ce shown in Table 2. Page 5 EN 12529:1998 BSI 03-1999 5.2 Impact performance 5.2.1 Test objectives, apparatus and procedures Detailed in 4.12 of EN 12527:1998. 5.2.2 Test values The test values are listed below. SymbolValueDescription L55 kgfree falling mass h2200 mmdrop height 5.2.3 Tolerances The
35、tolerances are: SymbolTolerance UnitAcceptable L5kg % 0 +2 h2mm 0 +3 5.2.4 Acceptance criteria No part of a castor shall become detached during the tests. On completion of the test the rolling, pivoting or braking performance shall be not impaired. 5.3 Electrical resistance test 5.3.1 Test objective
36、s, apparatus and procedures Detailed in 4.4 of EN 12527:1998. 5.3.2 Test values The test values are listed below. SymbolValueDescription L1variableload capacity L175 % to 10 % of L1test load Rvariablemeasured electrical resistance 5.3.3 Tolerances The tolerance is: SymbolTolerance UnitAcceptable L1N
37、 % 0 +2 L17N % 0 +2 5.3.4 Acceptance criteria The resistance R of the sample tested shall be: conductive castor(s) or wheel(s): R # 104V; antistatic castor(s) or wheels: 105#R # 107V. 5.4 Contact pressure 5.4.1 Test objectives, apparatus and procedures Detailed in 4.10 of EN 12527:1998. 5.4.2 Test v
38、alues The test values are listed below. SymbolValueDescription L2325 Ntest load y224 htime of application of load 5.4.3 Tolerances The tolerances are: SymbolTolerance UnitAcceptable L2N % 0 +2 y2h min 0 +15 5.4.4 Acceptance criteria 5.4.4.1 Castors type H The average contact pressure exerted by the
39、wheels on the test surface shall be not less than 10 N/mm2. 5.4.4.2 Castors type W The average contact pressure exerted by the wheels on the test surface shall be not less than 3 N/mm2and shall be not more than 5 N/mm2. 5.5 Stem retention 5.5.1 Test objectives, apparatus and procedures Detailed in 4
40、.17 of EN 12527:1998. 5.5.2 Test values The test value is listed below. SymbolValueDescription L1050 Nminimum pull-out force 5.5.3 Acceptance criteria The force required to remove the stem from the castor shall be greater than L10. 5.6 Static load performance 5.6.1 Test objectives, apparatus and pro
41、cedures Detailed in 4.9 of EN 12527:1998. 5.6.2 Test values The test values are listed below. SymbolValueDescription L6800 Ntest load y224 htime of application load y324 helapsed time prior to inspection 5.6.3 Tolerances The tolerances are: SymbolTolerance UnitAcceptable L6N % 0 +2 y2h min 0 +15 y3h
42、 1 h Page 6 EN 12529:1998 BSI 03-1999 5.8.2 Test values SymbolValue for type H-castorValue for type W-castorDescription L7300 N300 Ntest load per castor h12 mm3 mmheight of obstacles r25 000 cycles30 000 cyclesnumber of cycles z13 min3 minrunning period z22 min2 minpause period z36,8 cycles per min6
43、,8 cycles per minspeed 5.9.2 Test values SymbolValues for type H castorsValue for type W castorsDescription L7300 N300 Ntest load per castor r270 000 cycles20 000 cyclesnumber of cycles z36,8 cycles per min6,8 cycles per minspeed 5.6.4 Acceptance criteria Wheel deformation measured after a time y3sh
44、all not exceed 3 % of the wheel diameter. On completion of the test the rolling, pivoting or braking performance shall not be impaired. 5.7 Brake performance of castors type U 5.7.1 Test objectives, apparatus and procedures Detailed in 4.11 of EN 12527:1998. 5.7.2 Test values The test values are lis
45、ted below. SymbolValueDescription L4(60/120/150) N (progressive) test load v350 mm/stravel speed 5.7.3 Tolerances The tolerances are: SymbolTolerance UnitAcceptable L4N % 0 +2 v3mm/s 5 % 5.7.4 Acceptance criteria For each test load - using three castors - the minimum horizontal tractive force shall
46、be: Type H castors (w1): 11 N; Type W castors (w2): 9 N. 5.8 Dynamic test 5.8.1 Test objectives, apparatus and procedures Detailed in 4.13 of EN 12527:1998. 5.8.2 Test values The test values are listed below. 5.8.3 Tolerances The tolerances are: SymbolTolerance UnitAcceptable L7N % 0 +2 h1mm % 25 0
47、r2 % 0 +1 z1min 10 s z2min 10 s z3cycles/min 3 % The tolerances are: of the obstacle width (50 mm):2 %; of the angle of 908 to the running direction:38; of the running distance of 1 m:mm. 0 +25 5.8.4 Acceptance criteria No castor or a part of a castor shall become detached during the tests. Each cas
48、tor shall still be capable of carrying out its function at the end of the test programme. On completion of the test the rolling, pivoting or braking performance shall not be impaired. 5.9 Long distance running 5.9.1 Test objectives, apparatus and procedures Detailed in 4.14 of EN 12527:1998. 5.9.2 T
49、est values The test values are listed below. Page 7 EN 12529:1998 BSI 03-1999 5.9.3 Tolerances The tolerances are: SymbolTolerance UnitAcceptable L7kg % 0 +2 r2 % 0 +1 z3cycles/min 3 % 5.9.4 Acceptance criteria No castor or a part of a castor shall become detached during the tests. Each castor shall still be capable of carrying out its function at the end of the test programme. On completion of the test the rolling, pivoting or braking performance shall not be impaired. 5.10 Rolling resista
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