1、BRITISH STANDARD BS3486-1: 1996 ISO5711: 1995 Wheels for tractors and machinery for agriculture and forestry Part1: Specification for wheel-to-hub fixing dimensionsBS3486-1:1996 This British Standard, having been prepared under the directionof the Engineering SectorBoard, waspublished underthe autho
2、rityof the Standards Boardand comes intoeffect on 15April 1996 BSI 06-1999 First published May 1962 Second edition April 1996 The following BSI references relate to the work on this standard: Committee reference AGE/22 Draft for comment 79/72213 DC ISBN 0 580 25495 X Committees responsible for this
3、British Standard The preparation of this British Standard was entrusted to Technical Committee AGE/22, Wheels, upon which the following bodies were represented: Agricultural Engineers Association National Farmers Union Amendments issued since publication Amd. No. Date CommentsBS3486-1:1996 BSI 06-19
4、99 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Symbols 1 3 Flat attachment with centring on central bore 1 Annex A (informative) Attachments with stud-hole centring 3 Figure 1 1 Figure A.1 3 Figure A.2 4 Table 1 2 Table A.1 3 Table A.2 4BS3486-1:1996 ii
5、 BSI 06-1999 National foreword This Part of BS3486 has been prepared by Technical Committee AGE/22 and supersedes BS3486-1:1962 which is withdrawn. It is identical with ISO5711:1995, Tractors and machinery for agriculture and forestry Wheel-to-hub fixing dimensions published by the International Org
6、anization for Standardization (ISO). BS3486-2 covering tyre and rim sizes was withdrawn in 1996. These details are now covered in the following sections of BS AU50: BS AU50-1.4, Agricultural tractor and machine tyres. BS AU50-4.4, Agricultural tractor and machine rims. BS3486-3 covering nuts was als
7、o withdrawn in 1996 and has not been replaced. 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 obligat
8、ions. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.ISO571
9、1:1995(E) BSI 06-1999 1 1 Scope This International Standard specifies the dimensional requirements for attaching wheels to hubs on tractors and machinery for agriculture and forestry. The flat attachment type with centring on a central bore is the recommended type for future equipment. NOTE 1Charact
10、eristics of attachments with spherical or conical centring on the stud hole are shown in Annex A. Specifications indicated do not imply that the wheel is interchangeable from one vehicle to another. NOTE 2Wheels fitted to driven front and rear axles which incorporate gear reduction or corresponding
11、mechanisms within the wheel hub envelope are not covered by this International Standard. 2 Symbols The symbols used in this International Standard are as follows: 3 Flat attachment with centring on central bore Dimensions of the wheel and hub shall be as shown in Figure 1 and Table 1. d stud/nut sea
12、ting diameter D 1 PCD (pitch circle diameter) of stud/nut seating hole D 2 stud hole diameter D 3 central bore diameter D 4 disc flat bearing diameter D 5 centring diameter on the hub D 6 diameter of the hub flat bearing r spherical radius of the countersunk hole Figure 1 ISO 5711:1995(E) 2 BSI 06-1
13、999 Table 1 Dimensions in millimetres Number of equally spaced stud holes Wheel Stud diameter a Hub D 1 nom. D 2 D 3 D 4 min. D 5 D 6 4 100 15 61 145 12 60,8 140 5 140 17 96 185 14 95,8 180 6 205 21 161 255 18 160,8 250 8 203,2 21 152,4 257 18 152,2 252 275 24 221 325 20 220,8 320 10 335 26 281 390
14、22 280,8 385 12 425 26 371 470 22 370,8 465 a For information only. + 1 0 + 0,5 0 + 0 0,2 0 5ISO5711:1995(E) BSI 06-1999 3 Annex A (informative) Attachments with stud-hole centring NOTE 3These attachment methods are not recommended for future applications and dimensions are included for information
15、only. Table A.1 and Table A.2 contain only a selection of possible dimensions. Further fixing dimensions are in use, in particular in relation to the stud diameter. A.1 Attachment with spherical centring on stud holes Dimensions of the wheel and hub should be as shown in Figure A.1 and Table A.1. A.
16、2 Attachment with conical centring on stud holes Dimensions of the wheel and hub should be as shown in Figure A.2 and Table A.2. Table A.1 Figure A.1 Dimensions in millimetres Number of equally spaced stud holes Wheel Stud diameter Hub D 1 nom. D 2 d D 3 D 4 min. r D 5 max. D 6 4 100 18 24 60 145 14
17、 14 59 140 5 139,7 18 24 96 185 14 14 95 180 160 18 24 109 200 14 14 108 195 6 205 21,5 26,7 161 255 16 18 160 250 8 203,2 32 37 139,7 257 22,4 19 138 254 275 27 32 221 325 18 20 220 320 10 335 27 32 281 385 18 22 280 380 12 425 27 32 371 470 18 22 370 465 + 0,8 0 + 0,50 0,25 + 1 0 0 5ISO 5711:1995(
18、E) 4 BSI 06-1999 Table A.2 Figure A.2 Dimensions in millimetres Number of equally spaced stud holes Wheel Stud diameter Hub D 1 nom. D 2 d D 3 D 4 min. D 5 max. D 6 4 127 14,7 18,5 92,2 157,5 12 91 152 5 139,7 17 21 93 170 14 92 165 6 152,4 14,7 18,5 117,7 185 12 116 180 8 203,2 18,8 27 152,4 244 17
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