1、STD.BSI BS EN 12529-ENLL 1777 ICIP Lb24bb9 0754bLL A05 m BRITISH STANDARD Castors and wheels - Castors for furniture - Castors for swivel chairs - Requirements The European Standard EN 12529: 1998 has the status of a British Standard ICs 97.140 BS EN 12529:1999 STD-BSI BS EN 12529-ENGL 1777 I 1b2Lib
2、b7 0754b12 741 AmdNo. BS EN 126291999 Date Text affected This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 16 March 1999 O BSI 03-1999 ISBN O 580 30649 6 National
3、foreword This British Standard is the English language version of EN 12529: 1998. The UK participation in its preparation was entrusted to Technical Committee MHEI*7, Industrial trucks - Safety, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible Eur
4、opean committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary
5、. Cross-references The British Standards which implement international or European publidons referred to in this document may be found in the BSI Standards Catalogue under the section entitied “Intedonal Standards Correspondence Index“, or by using the Find facility of the BSI Standards Electronic C
6、atalogue. A British Standard does not purport to include 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
7、comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. EUROPEAN STANDARD NO= EUROPENNI3 EUROP - castor type; - dimensions. 4.1 Fixing system The fixing system includes stem and circlip, threaded stem and other fixing systems. 4.2 Castor type Castors are cla
8、ssified into four types: 4.2.1 Qpe 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 floors. 4.2.2 ape W Castors with resilient tyred wheels are defined as type W, soft tread. This shall
9、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 mpe C Castors which are electrically conductive. NOTE These castors shall have either type H or type W wheels. They may also co
10、nform to type U. 4.2.4 Qpe 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 castors are fitted, allowing ease of mobility in tha
11、t position. This braking action is automatically reapplied 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 chair design and the type of floors and covering in us
12、e. 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 castor dimensions. Figure 1 - Single-whe- 1 swivel
13、castor Q BCI 03-1999 STD.BSI BS EN 12529-ENGL 1799 I lb24bb9 0754bLb 397 m Description Page 4 EN 125291998 Castor designs Symbol Dimension I Figure 2 - Win wheel swivel castor offset Ti.ead width Extenial comer radius Intend comer radius 5 Requirements Testing requirements for castors and wheels are
14、 listed below. Test methods and apparatus are defined in EN 125271998. The test values detailed are the minimum required for acceptance. 6.1 Standard conditions 6.1.1 Environmental conditions Tests shall be carried out at a temperature between 17 OC and 23 OC. During the 24 h prior to the test the s
15、ample(s) shall remain at the above temperature, in an environment with a relative humiity between 40 % and 70 %. Sample($) shall not be artificially cooled during testing. 6.1.2 Test sequence Electrical resistance, impact, contact pressure, stem retention and static load tests shall each be carried
16、out with new castom. Another new castor($) is taken and the remaining tests carried out in the sequence shown in lble 2. All F min. 18 Single wheel T3 min. 18 ?tivin wheel min.2X7 AlltypeH 7-3 min. 6 AUtypeW min. 1,5 All twin wheel TA min. 1.5 Table 1- Specified castor dimensions li.eadCllW min. 110
17、 AU twin wheel e 15 to 22 All P 10 mm or M10 Reference 6.2 6.3 6.4 6.7 6.8 L 6.9 6.10 6.11 6.7 6.6 6.6 Test sequence Impact performance Electrical resistance Contact pressure Brake performance Dynamic Long distance running Roiling resistance Swivel mistance Brake performance Stem retention static lo
18、ad Castors types All Castors type C AU Castors type U (first test) All All All All Castors type U (second All Au Test procedure reference 4.12 4.4 4.10 4.11 4.13 4.14 4.16 4.16 4.11 4.17 4.9 O BSI 03-1999 STD.BSI ES EN L2529-ENGL 1999 IIRS Lb24bb7 0754b17 223 m Symbol L2 Y2 Value Description 325 N t
19、est load 24 h time of application of load Symbol L5 h2 Value +; % +3 n L5 5 kg free falling mass -h2 200 mm drop height I Symbol load capacity test load resistance variable measured electrical Tolerance Unit Acceotable 5.3.3 Tolerances The tolerance is Symbol Symbol I Tolerance Tolerance Unit Accept
20、able L1 L17 Unit, Acceptable N +; % IN LG Y2 Y3 5.3.4 Acceptance criteria The resistance R of the sample tested shall be: - conductive castor(s) or wheel(s): R 5 104Q - antistatic castor(s) or wheels: lo5 IR I 107fl. 5.4 Contact pressure 5.4.1 Test objectives, apparatus and procedures Detailed in 4.
21、10 of EN 125271998. 800 N test load 24 h 24 h time of application load elapsed time prior to inspection Page 5 EN 125291998 L2 Y2 N h +; % +15min O 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/mm2.
22、 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/mm2 and shall be not more than 5 N/mm2. 5.5 Stem retention 5.5.1 Test objectives, apparatus and procedures Detailed in 4.17 of EN 125271998. 5.5.2 Test values The test value is l
23、isted below. Symbol I Value I Description I LlO I 50 N I minimum pun-out force I 5.5.3 Acceptance criteria The force required to remove the stem from the castor shail be greater than Llo. 5.6 Static load performance 5.6.1 Test objectives, apparatus and procedures Detailed in 4.9 of EN 125271998. 5.6
24、.2 Test values The test values are listed below. I Symbol I Value I Descrirition Symbol L6 Y2 Y3 Tolerance I Unit N h h Acceptable I +; % + 1 5min O fl h O BSI 03-1999 STD=BSI: BS EN 12529-ENGL 1799 I Lb24bb9 0754b18 LbT I unit Page 6 EN 1252%1998 AcceDtabie L4 v3 (60/120/150) N test load regressive
25、) 5Omm/S -vel speed Symbol Tolerance v3 I mm/s I% I 6.7.4 Acceptance criteria For each test load - using three castors - the minimum horizontal tractive force shall be: - Qpe H castors (w1): 11 N - Qpe W castors (w2): 9 N. 6.8 Dynamic test 6.8.1 Test objectives, apparatus and procedures Detaiied in
26、4.13 of EN 125271998. 6.8.2 Test values The test values are listed below L4 6.8.2 Test values unit Acceptable O +2 % N Symbol L7 hl 7-2 21 22 23 6.8.3 %lerances The tolerances are: Value for type H-castor 300N 2mm 5 o00 cycles 3min 2min 6,8 cycles per min Symbol Value for type W-castor 300 N 3mm 30
27、o00 cycles 3min 2min 6,8 cycles per min Description test load per castor height of obstacles number of cycles running period pause period speed N mm Symbol L7 min min cycles/min Values for type H castors Value for type W castors Description 300 N 300 N test load per castor +; % -5 O% +; % f10 s +lo
28、s S% The tolerances are: - of the obstacle width (50 mm): - of the ange ofNo to the running direction: +3“; - of the running distance of i m: +l5mm. % 6.8.4 Acceptance criteria No castor or a part of a castor shall become detached during the tests. Each castor shall still be capable of carrying out
29、its function at the end of the test programme. On completion of the test the rolling, pivoting or braking performance shall not be impaired 6.9 Long distance running 6.9.1 Test objectives, apparatus and procedures Detailed in 4.14 of EN 125271998. 6.9.2 Test values The test values are listed below.
30、I r2 1 70000cycles I 20 o00 cycles I number of cycles I 23 I 6,8 cycles per min I 6,8 cycles per min I speed O BSI 03-1999 Symbol Tolerance unit Acceptable Symbol Tolerance Unit Acceptable L9 N +; % mm/S f5 % z3 cycledmin I Ir3% Symbol L8 v2 Value Description (300/600/900) N Cprogressive) test load
31、50 mm/s travel speed I Symbol Tolerance Unit AcceDtable Page 7 EN 125291998 6.9.3 Tolerances The tolerances axe: 6.11.3 Tolerances I L7 Ikg +i % +; % I r2 6 Conformity The manufacturer declares on request by a certificate of conformity that the castors are in accordance with the requirements as stat
32、ed in this document. The type of testing machine shall be stated in the conformity document. 7 Marking of the product 7.1 Product marking All the products shall be permanently marked with a name andor trade mark of the manufacturer. 7.2 Marking of electrically conductive or antistatic castor(s) or w
33、heel(s) AU products shall bear on their outer surface a clearly visible yellow mark, and where appropriate and possible should include the word “antistatic”. 6.10.3 Tolerances The tolerances are: IN 6.10.4 Acceptance criteria For each test load the horizontal tractive force u13 shall not exceed 15 %
34、 of LB. 6.11 Swivel resistance 6.11.1 Test objectives, apparatus and procedures Detailed in 4.16 of EN 125271998. 6.11.2 Test values The test values are listed below. Symbol Description per castor 50 mm/s speed O BSI 03-1999 STD=BSI 13s EN 12527-ENGL 1799 I lb24bb7 075Yb20 BIB W BS EN 125291999 BSI
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