1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 225:1988 ISO7803:1987 Specification for Dimensions of steering ball joints for commercial road vehicles ISO title: Commercial road vehicles Steering ball joints UDC 629.114.4:629.11.014.5:629.11.011.72:(083.3)BSAU225:1988 This BritishStandard, having been pre
2、pared under the directionof the Automobile Standards Committee, was published under the authority ofthe Board of BSI and comesintoeffect on 31August1988 BSI02-2000 The following BSI references relate to the work on this standard: Committee reference AUE/13 Draft for comment82/73029 DC ISBN 0 580 167
3、30 5 Committees responsible for this British Standard 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: Department of Transport (Highways) Freight Transport Association
4、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 issue CommentsBSAU225:1988 BSI 02-2000 i Conte
5、nts Page Committees responsible Inside front cover National foreword ii 1 Scope and field of application 1 2 Dimensions 1 3 Designation 1BSAU225:1988 ii BSI 02-2000 National foreword This BritishStandard has been prepared under the direction of the Automobile Standards Committee and is identical wit
6、h ISO7803:1987 “Commercial road vehicles Steering ball joints”, published by the 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 termin
7、ology and certain conventions are not identical with those used in BritishStandards; 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 “
8、International Standard” or “ISO7803” appear, referring to this standard, they should be read as “BritishStandard” and “BS AU225” respectively. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct appli
9、cation. 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, pagesi andii, page1 and a back cover. This standard has been updated (see copyright date) and may have had amendments i
10、ncorporated. This will be indicated in the amendment table on the inside front cover.BSAU225:1988 BSI 02-2000 1 1 Scope and field of application This International Standard specifies the main dimensions of steering ball joints for commercial vehicles. The ball joint is considered as being a single p
11、iece with its socket. Thus this International Standard covers the ball-socket assembly. 2 Dimensions For dimensions, see the figure and table. 3 Designation Example for the designation of a ball joint of nominal size S 8 D=30mm, where the angles =40 and=20 : Ball joint ISO78033040 20 Dimensions in m
12、illimetres Nominal size S8 D A max. B C max. D 1 1) h9 a D 2 max. D 3 2) G 2 H min. L h11 r max. 3) min. 3) min. 27 66 24 3 20 50 M24 1,5 95 60 24 32 30 71 26 3 22 58 M28 1,5 105 65 26 37 35 81 30 3 26 67 M30 1,5 115 75 30 42 40 20 40 91 34 3 30 74 M30 1,5 120 80 34 47 50 109 40 3 38 85 M38 1,5 135
13、85 42 54 a Bore H8. 1) To ensure satisfactory operation of the taper drive, it is necessary for the manufacturers to provide such tolerances that the contact between the male and female cones starts from the major diameter and extends to at least60% of the contact area. 2) The stud D 3is available w
14、ith either right-hand thread or left-hand thread. For ball joints with left-hand thread, the designation should be supplemented by the letters LH. 3) The vehicle manufacturer on consultation with the ball joint manufacturer may specify different angles.BS AU 225:1988 ISO7803:1987 BSI 389 Chiswick Hi
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