1、BRITISH STANDARD BS ISO 12240-2:1998 Spherical plain bearings Part 2: Angular contact radial spherical plain bearings ICS 21.100.10BS ISO 12240-2:1998 This British Standard, having been prepared under the directionof the Engineering SectorCommittee, was publishedunder the authority ofthe Standards C
2、ommittee andcomes into effect on 15November1998 BSI 06-1999 ISBN 0 580 30791 3 National foreword This British Standard reproduces verbatim ISO12240-2:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MCE/7, Rolling bearin
3、gs, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulg
4、ate 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 international or European publications referred to in this document may be found in the BSI Standards Catalogue under the sect
5、ion entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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.
6、 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, pages i and ii, theISO title page, pages ii to iv, pages1 to3 and a back cover. This standard has been updated (see copyright
7、date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBS ISO 12240-2:1998 BSI 06-1999 i Contents Page National foreword Inside front cover Foreword iii Text of ISO 12240-2 1ii
8、 blankBS ISO 12240-2:1998 ii BSI 06-1999 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Definitions and symbols 1 4 Dimensions and tolerances 1 Figure 1 Angular contact radial spherical plain bearing, dimension series A 1 Table 1 Dimensions for angular contact radial spherical plain
9、 bearings, dimension series A 2 Table 2 Tolerances for inner ring and bearing width 3 Table 3 Tolerances for outer ring 3BSISO12240-2:1998 BSI 06-1999 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standard bodies (ISO member bodies). The
10、work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-gover
11、nmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for vo
12、ting. Publication as an International Standard requires approval by at least75% of the member bodies casting a vote. International Standard ISO12240-2 was prepared by Technical Committee ISO/TC4, Rolling bearings, Subcommittee SC7, Spherical plain bearings. ISO12240 consists of the following parts,
13、under the general title Spherical plain bearings: Part 1: Radial spherical plain bearings; Part 2: Angular contact radial spherical plain bearings; Part 3: Thrust spherical plain bearings; Part 4: Spherical plain bearing rod ends. Descriptors: Bearings, plain bearings, spherical bearings, radial bea
14、rings, form specifications, dimensions, dimensional tolerances.iv blankBS ISO 12240-2:1998 BSI 06-1999 1 1 Scope This part of ISO12240 specifies dimensions and tolerances for angular contact radial spherical plain bearings. The specified tolerance values apply to finished, angular contact radial sph
15、erical plain bearings before any coating or plating. Angular contact radial spherical plain bearings need not conform to the design illustrated but compliance is required as regards dimensions and tolerances specified. NOTEAngular contact radial spherical plain bearings for airframe applications are
16、 not covered by this part of ISO12240. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO12240. At the time of publication, the editions indicated were valid. All standards are subject to revision, and pa
17、rties to agreements based on this part of ISO12240 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 582:1995, Rolling bearings Chamfer dimensi
18、ons Maximum values. ISO 1132-1:, Rolling bearings Tolerances Part1: Terms and definitions 1) . ISO 6811:1998, Spherical plain bearings Vocabulary. 3 Definitions and symbols For the purposes of this part of ISO12240, the definitions given in ISO1132-1 and ISO6811 apply. The symbols (except those for
19、tolerances) shown in Figure 1 and the values given in the tables denote nominal dimensions unless specified otherwise. 4 Dimensions and tolerances 4.1 Dimensions See Figure 1 and Table 1. 1) To be published. (Revision of ISO1132:1980) B Inner ring width C Outer ring width D Outside diameter D 1 Bore
20、 diameter of outer ring d Bore diameter d 1 Outside diameter of inner ring d k Sphere diameter r s min a Smallest single chamfer dimension, inner ring r 1s min a Smallest single chamfer dimension, outer ring s Distance between sphere diameter centre and inner ring back face T Bearing width V Dmp Var
21、iation of mean outside diameter V dmp Variation of mean bore diameter V Dp Variation of outside diameter in a single radial plane V dp Variation of bore diameter in a single radial plane Bs Deviation of a single inner ring width Cs Deviation of a single outer ring width Dmp Deviation of mean outside
22、 diameter in a single plane dmp Deviation of mean bore diameter in a single plane Ts Deviation of the actual bearing width a The corresponding maximum chamfer dimensions are given in Table 1 of ISO582:1995. Figure 1 Angular contact radial spherical plain bearing, dimension series ABS ISO 12240-2:199
23、8 2 BSI 06-1999 Table 1 Dimensions for angular contact radial spherical plain bearings, dimension series A Dimensions in millimetres d D B max. C max. T d k a d 1 . D 1 max. s . r s , r 1s min. 25 47 15 14 15 42 41,5 32 1 0,6 28 52 16 15 16 47 46,5 36 1 1 30 55 17 16 17 50 49,5 37 2 1 32 58 17 16 17
24、 52 51,5 40 2 1 35 62 18 17 18 56 55,5 43 2 1 40 68 19 18 19 61 60,5 48 2 1 45 75 20 19 20 67 66,5 54 3 1 50 80 20 19 20 74 73,5 60 4 1 55 90 23 22 23 81 80 63 5 1,5 60 95 23 22 23 87 86 69 5 1,5 65 100 23 22 23 93 92 77 6 1,5 70 110 25 24 25 102 101 83 7 1,5 75 115 25 24 25 106 105 87 7 1,5 80 125
25、29 27 29 115 113,5 92 9 1,5 85 130 29 27 29 121 119 98 10 1,5 90 140 32 30 32 129 127 104 11 2 95 145 32 30 32 133 131,5 109 9 2 100 150 32 31 32 141 138,5 115 12 2 105 160 35 33 35 149 146,5 120 13 2,5 110 170 38 36 38 158 155 127 14 2,5 120 180 38 37 38 169 165 137 16 2,5 130 200 45 43 45 188 184
26、149 18 2,5 140 210 45 43 45 198 194 162 19 2,5 150 225 48 46 48 211 207 172 20 3 160 240 51 49 51 225 221 183 20 3 170 260 57 55 57 246 242 195 21 3 180 280 64 61 64 260 256 207 21 3 190 290 64 62 64 275 270 213 26 3 200 310 70 66 70 290 285 230 26 3 a Reference only.BS ISO 12240-2:1998 BSI 06-1999
27、3 4.2 Tolerances See Table 2 and Table 3. Table 2 Tolerances for inner ring and bearing width Table 3 Tolerances for outer ring d mm dmp 4m V dp 4m V dmp 4m Bs 4m Ts 4m over including high low max. max. high low high low 50 0 12 12 9 0 240 +250 400 50 80 0 15 15 11 0 300 +250 500 80 120 0 20 20 15 0
28、 400 +250 600 120 180 0 25 25 19 0 500 +350 700 180 200 0 30 30 23 0 600 +350 800 D mm Dmp 4m V Dp 4m V Dmp 4m Cs 4m over including high low max. max. high low 50 0 14 14 11 0 240 50 80 0 16 16 12 0 300 80 120 0 18 18 14 0 400 120 150 0 20 20 15 0 500 150 180 0 25 25 19 0 500 180 250 0 30 30 23 0 60
29、0 250 315 0 35 35 26 0 700BS ISO 12240-2:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by
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