1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 214-2:1988 ISO7646:1986 Gearbox flanges Part2: Specification for dimensions for type A gearbox flanges for commercial vehicles and buses ISO title: Commercial vehicles and buses Gearbox flanges Type A UDC 629.114.4/.53:621.825.24BSAU214-2:1988 This BritishSta
2、ndard, having been prepared under the directionof the Automobile Standards Committee, was published under the authority ofthe Board of BSI and comes intoeffect on 29January1988 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference AUE/13 Draft for comment8
3、2/75548DC ISBN 0 580 16364 4 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Automobile Standards Committee (AUE/-) to Technical Committee AUE/13, upon which the following bodies were represented: British Railways Board Department of Trans
4、port (Highways) Freight Transport Association Institute of Road Transport Engineers (Incorporated) London Regional Transport Ministry of Defence National Bus Company Road Haulage Association Ltd. Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No. Date of
5、issue CommentsBSAU214-2:1988 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope and field of application 1 2 References 1 3 Dimensions and tolerances 1 4 Designation 1 Figure 1 2 Figure 2 2 Figure 3 3 Figure 4 3 Figure 5 4 Table Dimensions and toleranc
6、es 4 Publications referred to Inside back coverBSAU214-2:1988 ii BSI 12-1999 National foreword This BritishStandard has been prepared under the direction of the Automobile Standards Committee and is identical with ISO7646:1986 “Commercial vehicles and buses Gearbox flanges Type A”, published by the
7、International Organization for Standardization (ISO). Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a BritishStandard without deviation. Some terminology and certain conventions are not identical with those used in BritishStandar
8、ds; attention is drawn especially to the following. The comma has been used as a decimal marker. In BritishStandards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read a
9、s “BritishStandard”. The Technical Committee has reviewed the provisions of ISO1101:1983 to which reference is made in the text, and has decided that they are acceptable for use inconjunction with this standard. A related BritishStandard to ISO1101 is BS308 “Engineering drawing practice” Part3:1972
10、“Geometrical tolerancing”. 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. Cross-referenc
11、es International Standard Corresponding BritishStandard ISO/R286:1962 BS4500 ISO limits and fits Part1:1969 General, tolerances and deviations (Technically equivalent) ISO7647:1986 BS AU214 Gearbox flanges Part3:1987 Specification for dimensions for type S gearbox flanges for commercial vehicles and
12、 buses (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover 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 tab
13、le on the inside front cover.BSAU214-2:1988 BSI 12-1999 1 1 Scope and field of application This International Standard specifies the nominal dimensions and tolerances which affect the interchangeability between gearbox flanges and mating parts used on commercial vehicles and buses. The flanges cover
14、ed by this International Standard are designated type A. They are not interchangeable with type S flanges dealt with inISO7647. Dimensions not specified are left to the discretion of the component manufacturer. 2 References ISO286, ISO system of limits and fits 1) . ISO1101, Technical drawings Geome
15、trical tolerancing Tolerancing of form, orientation, location and run-out Generalities, definitions, symbols, indications on drawings. ISO7647, Road vehicles Gearbox flanges for commercial vehicles and buses Type S. 3 Dimensions and tolerances Nominal dimensions, tolerances and bolt hole fixing posi
16、tions which affect the interchangeability of type A flanges for gear-boxes are shown in Figure 1 to Figure 5, and given in the Table. 4 Designation Gearbox flanges meeting the requirements of this International Standard shall be identified by the following details in the order specified: a) referenc
17、e to this International Standard; b) the diameter of the flange, d 1 ; c) the number of fixing bolts; d) the size of the fixing bolts. Example: Designation of a gearbox flange type A with d 1 =150mm and eight12mm fixing bolts: Flange ISO7646-150 8 12 1) At present at the stage of draft. (Revision of
18、 ISO/R286:1962.)BSAU214-2:1988 2 BSI 12-1999 Position and run-out tolerances in millimetres Figure 1 Figure 2 BSAU214-2:1988 BSI 12-1999 3 Position and run-out tolerances in millimetres Figure 3 Figure 4 BSAU214-2:1988 4 BSI 12-1999 Table Dimensions and tolerances Position and run-out tolerances in
19、millimetres Figure 5 Dimensions in millimetres d 1 Figure number Number of holes d 5 d 2 d 3 h7 a d 4 bl h 75 Figure 2 6 6,1 62 42 51,6 5,5 1,8 90 Figure 1 4 8,1 74,5 47 61 6 2,3 Figure 2 6 100 Figure 2 6 8,1 84 57 70,5 7 2,3 120 Figure 3 8 10,1 101,5 75 84,3 8 2,3 150 Figure 3 8 12,1 130 90 110,7 1
20、0 2,3 Figure 5 12 165 Figure 3 8 16,1 140 95 115 12 2,3 180 Figure 4 10 16,1 155,5 110 130,5 12 2,3 225 Figure 5 12 16,1 196 140 171 15 4 a See ISO286. b This dimension shall be used when required to prevent bolt heads from rotating. +0,2 0 0 0,2 0 0,5 0 0,2BSAU214-2:1988 BSI 12-1999 Publications re
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