BS EN 12529-1999 Castors and wheels - Castors for furniture - Castors for swivel chairs - Requirements《脚轮和轮子 家具用脚轮 转椅用脚轮 要求》.pdf

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 RequirementsBS EN 12529:1999 This British Standard, having been prepared under the dir

3、ection 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. Date Text affected National foreword This British Standard is the English langua

4、ge 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 prop

5、osals 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 inter

6、national 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 incl

7、ude all 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 E

8、N title 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

9、 CEN national Members. Ref. No. 12529:1998 E EUROPEAN STANDARD EN 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,

10、impact 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 Euro

11、pean 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

12、concerning 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

13、 own 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,

14、 Sweden, 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 b

15、y publication 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 implem

16、ent 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 Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3

17、4 Dimensions and classification 3 4.1 Fixing system 3 4.2 Castor type 3 4.3 Dimensions 3 5 Requirements 4 5.1 Standard conditions 4 5.2 Impact performance 5 5.3 Electrical resistance test 5 5.4 Contact pressure 5 5.5 Stem retention 5 5.6 Static load performance 5 5.7 Brake performance of castors typ

18、e U 6 5.8 Dynamic test 6 5.9 Long distance running 6 5.10 Rolling resistance 7 5.11 Swivel resistance 7 6 Conformity 7 7 Marking of the product 7 7.1 Product marking 7 7.2 Marking of electrically conductive or antistatic castor(s) or wheel(s) 7Page 3 EN 12529:1998 BSI 03-1999 1 Scope This European S

19、tandard specifies the technical requirements, the 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 und

20、ated reference, provisions from other publications. 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

21、 when incorporated in it by amendment or revision. 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 an

22、d wheels Test methods and apparatus. 3 Definitions 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 i

23、ncludes stem and circlip, threaded stem and other 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. NOTE These castors are suitable for carpeted floo

24、rs. 4.2.2 Type W Castors with resilient tyred wheels are defined as type W, soft tread. This shall be of a clearly different colour to the wheel centre. NOTE These castors are suitable for hard stone, wooden or tiled floors or those featuring non-textiled covering. 4.2.3 Type C Castors which are ele

25、ctrically conductive. NOTE These castors shall have 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 relea

26、sed 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 rolling away unintentionally. NOTE 2 The decision regarding the type of castors to be f

27、itted to swivel chairs will be dependent on the chair 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 t

28、ypical castor designs; Table 1 shows the specified castor dimensions. Figure 1 Single-wheel swivel castorPage 4 EN 12529:1998 BSI 03-1999 Table 1 Specified castor dimensions Dimensions in millimetres Description Castor designs Symbol Dimension Wheel diameter All D min. 48 Offset All F min. 18 Tread

29、width Single wheel T 3 min. 18 Twin wheel min. 23 7 External corner radius All type H r 3 min. 6 All type W min. 1,5 Internal corner radius All twin wheel r 4 min. 1,5 Tread curvature All single wheel r 5 min. 110 Wheel spacing All twin wheel e 15 to 22 Minimum stem diameter All P 10 mm or M10 Table

30、 2 Test sequence for castor types and test procedure reference Reference Test sequence Castors types Test procedure reference 5.2 Impact performance All 4.12 5.3 Electrical resistance Castors type C 4.4 5.4 Contact pressure All 4.10 5.7 Brake performance Castors type U (first test) 4.11 5.8 Dynamic

31、All 4.13 5.9 Long distance running All 4.14 5.10 Rolling resistance All 4.15 5.11 Swivel resistance All 4.16 5.7 Brake performance Castors type U (second test) 4.11 5.5 Stem retention All 4.17 5.6 Static load All 4.9 Figure 2 Twin wheel swivel castor 5 Requirements Testing requirements for castors a

32、nd wheels are listed below. Test methods and apparatus are defined in EN 12527:1998. The test values detailed are the minimum required for acceptance. 5.1 Standard conditions 5.1.1 Environmental conditions Tests shall be carried out at a temperature between 178C and 238C. During the 24 h prior to th

33、e test the sample(s) shall remain at the above temperature, in an environment with a relative humidity between 40 % 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 eac

34、h be carried out with new castors. Another new castor(s) is taken and the remaining tests carried out in the sequence 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

35、 values are listed below. Symbol Value Description L 5 5 kg free falling mass h 2 200 mm drop height 5.2.3 Tolerances The tolerances are: Symbol Tolerance Unit Acceptable L 5 kg % 0 +2 h 2 mm 0 +3 5.2.4 Acceptance criteria No part of a castor shall become detached during the tests. On completion of

36、the test the rolling, pivoting or braking performance shall be not impaired. 5.3 Electrical resistance test 5.3.1 Test objectives, apparatus and procedures Detailed in 4.4 of EN 12527:1998. 5.3.2 Test values The test values are listed below. Symbol Value Description L 1 variable load capacity L 17 5

37、%t o1 0%o fL 1 test load R variable measured electrical resistance 5.3.3 Tolerances The tolerance is: Symbol Tolerance Unit Acceptable L 1 N % 0 +2 L 17 N % 0 +2 5.3.4 Acceptance criteria The resistance R of the sample tested shall be: conductive castor(s) or wheel(s): R# 10 4 V; antistatic castor(s

38、) or wheels: 10 5 #R# 10 7 V. 5.4 Contact pressure 5.4.1 Test objectives, apparatus and procedures Detailed in 4.10 of EN 12527:1998. 5.4.2 Test values The test values are listed below. Symbol Value Description L 2 325 N test load y 2 24 h time of application of load 5.4.3 Tolerances The tolerances

39、are: Symbol Tolerance Unit Acceptable L 2 N % 0 +2 y 2 h min 0 +15 5.4.4 Acceptance criteria 5.4.4.1 Castors type H The average contact pressure exerted by the wheels on the test surface shall be not less than 10 N/mm 2 . 5.4.4.2 Castors type W The average contact pressure exerted by the wheels on t

40、he test surface shall be not less than 3 N/mm 2 and shall be not more than 5 N/mm 2 . 5.5 Stem retention 5.5.1 Test objectives, apparatus and procedures Detailed in 4.17 of EN 12527:1998. 5.5.2 Test values The test value is listed below. Symbol Value Description L 10 50 N minimum pull-out force 5.5.

41、3 Acceptance criteria The force required to remove the stem from the castor shall be greater than L 10 . 5.6 Static load performance 5.6.1 Test objectives, apparatus and procedures Detailed in 4.9 of EN 12527:1998. 5.6.2 Test values The test values are listed below. Symbol Value Description L 6 800

42、N test load y 2 24 h time of application load y 3 24 h elapsed time prior to inspection 5.6.3 Tolerances The tolerances are: Symbol Tolerance Unit Acceptable L 6 N % 0 +2 y 2 h min 0 +15 y 3 h 1hPage 6 EN 12529:1998 BSI 03-1999 5.8.2 Test values Symbol Value for type H-castor Value for type W-castor

43、 Description L 7 300 N 300 N test load per castor h 1 2 mm 3 mm height of obstacles r 2 5 000 cycles 30 000 cycles number of cycles z 1 3 min 3 min running period z 2 2 min 2 min pause period z 3 6,8 cycles per min 6,8 cycles per min speed 5.9.2 Test values Symbol Values for type H castors Value for

44、 type W castors Description L 7 300 N 300 N test load per castor r 2 70 000 cycles 20 000 cycles number of cycles z 3 6,8 cycles per min 6,8 cycles per min speed 5.6.4 Acceptance criteria Wheel deformation measured after a time y 3 shall not exceed 3 % of the wheel diameter. On completion of the tes

45、t 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 listed below. Symbol Value Description L 4 (60/120/150) N (progressiv

46、e) test load v 3 50 mm/s travel speed 5.7.3 Tolerances The tolerances are: Symbol Tolerance Unit Acceptable L 4 N % 0 +2 v 3 mm/s 5% 5.7.4 Acceptance criteria For each test load - using three castors - the minimum horizontal tractive force shall be: Type H castors (w 1 ): 11 N; Type W castors (w 2 )

47、: 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: Symbol Tolerance Unit Acceptable L 7 N % 0 +2 h 1 mm % 25 0 r 2 % 0 +1 z 1 min 10 s z 2 min 10 s z 3 cyc

48、les/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 castor shall still be capable of carry

49、ing 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 Test values The test values are listed below.Page 7 EN 12529:1998 BSI 03-1999 5.9.3 Tolerances The tolerances are: Symbol Tolerance Unit Acceptable L 7 kg % 0 +2 r 2 % 0 +1 z 3 cycles/min 3% 5.9.4 Acceptance criteria No