A Reference number ISO 12240 2 1998(E) INTERNATIONAL STANDARD ISO 12240 2 First edition 1998 08 15 Spherical plain bearings — Part 2 Angular contact radial spherical plain bearings Rotules lisses — Pa[.]
INTERNATIONAL STANDARD ISO 12240-2 First edition 1998-08-15 Spherical plain bearings — Part 2: Angular contact radial spherical plain bearings Rotules lisses — Partie 2: Rotules lisses radiales contact oblique A Reference number ISO 12240-2:1998(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standard bodies (ISO member bodies) The 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-governmental, 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 voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote International Standard ISO 12240-1 was prepared by Technical Committee ISO/TC 4, Rolling bearings, Subcommittee SC 7, Spherical plain bearings This first edition cancels and replaces ISO 6124-1:1987, ISO 6124-2:1982, ISO 6124-3:1982 and ISO 6125:1982 of which it constitutes a technical revision ISO 12240 consists of the following parts, 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 © ISO 1998 All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher International Organization for Standardization Case postale 56 • CH-1211 Genève 20 • Switzerland Internet iso@iso.ch Printed in Switzerland ii ISO 12240-2:1998 Contents Foreword Scope Normative references Definitions and symbols Dimensions and tolerances Figure — Angular contact radial spherical plain bearing, dimension series A Table — Dimensions for angular contact radial spherical plain bearings, dimension series A Table — Tolerances for inner ring and bearing width Table — Tolerances for outer ring ii Page iii 1 1 3 ISO 12240-2:1998 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standard bodies (ISO member bodies) The 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-governmental, 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 voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote International Standard ISO 12240-2 was prepared by Technical Committee ISO/TC 4, Rolling bearings, Subcommittee SC 7, Spherical plain bearings ISO 12240 consists of the following parts, 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 bearings, form specifications, dimensions, dimensional tolerances iii iv blank ISO 12240-2:1998 Scope This part of ISO 12240 specifies dimensions and tolerances for angular contact radial spherical plain bearings The specified tolerance values apply to finished, angular contact radial spherical 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 NOTE Angular contact radial spherical plain bearings for airframe applications are not covered by this part of ISO 12240 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 12240 At the time of publication, the editions indicated were valid All standards are subject to revision, and parties to agreements based on this part of ISO 12240 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 dimensions — Maximum values ISO 1132-1:—, Rolling bearings — Tolerances — Part 1: Terms and definitions1) ISO 6811:1998, Spherical plain bearings — Vocabulary T VDmp Bearing width Variation of mean outside diameter Vdmp Variation of mean bore diameter VDp ¹Bs Variation of outside diameter in a single radial plane Variation of bore diameter in a single radial plane Deviation of a single inner ring width ¹Cs Deviation of a single outer ring width ¹Dmp Deviation of mean outside diameter in a single plane Deviation of mean bore diameter in a single plane Deviation of the actual bearing width Vdp ¹dmp ¹Ts a The corresponding maximum chamfer dimensions are given in Table of ISO 582:1995 Dimensions and tolerances 4.1 Dimensions See Figure and Table Definitions and symbols For the purposes of this part of ISO 12240, the definitions given in ISO 1132-1 and ISO 6811 apply The symbols (except those for tolerances) shown in Figure and the values given in the tables denote nominal dimensions unless specified otherwise B C D D1 Inner ring width Outer ring width Outside diameter Bore diameter of outer ring d d1 Bore diameter Outside diameter of inner ring dk Sphere diameter rs mina Smallest single chamfer dimension, inner ring Smallest single chamfer dimension, outer ring Distance between sphere diameter centre and inner ring back face r1s mina s 1) To Figure — Angular contact radial spherical plain bearing, dimension series A be published (Revision of ISO 1132:1980) ISO 12240-2:1998 Table — Dimensions for angular contact radial spherical plain bearings, dimension series A Dimensions in millimetres d 25 28 30 32 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 170 180 190 200 a D 47 52 55 58 62 68 75 80 90 95 100 110 115 125 130 140 145 150 160 170 180 200 210 225 240 260 280 290 310 Reference only 15 16 17 17 18 19 20 20 23 23 23 25 25 29 29 32 32 32 35 38 38 45 45 48 51 57 64 64 70 B C max max 14 15 16 16 17 18 19 19 22 22 22 24 24 27 27 30 30 31 33 36 37 43 43 46 49 55 61 62 66 T 15 16 17 17 18 19 20 20 23 23 23 25 25 29 29 32 32 32 35 38 38 45 45 48 51 57 64 64 70 dk a 42 47 50 52 56 61 67 74 81 87 93 102 106 115 121 129 133 141 149 158 169 188 198 211 225 246 260 275 290 d1 D1 s rs, r1s max 41,5 46,5 49,5 51,5 55,5 60,5 66,5 73,5 80 86 92 101 105 113,5 119 127 131,5 138,5 146,5 155 165 184 194 207 221 242 256 270 285 32 36 37 40 43 48 54 60 63 69 77 83 87 92 98 104 109 115 120 127 137 149 162 172 183 195 207 213 230 1 2 2 5 7 10 11 12 13 14 16 18 19 20 20 21 21 26 26 0,6 1 1 1 1,5 1,5 1,5 1,5 1,5 1,5 1,5 2 2,5 2,5 2,5 2,5 2,5 3 3 3 ISO 12240-2:1998 4.2 Tolerances See Table and Table Table — Tolerances for inner ring and bearing width ¹dmp 4m d mm over including — 50 high low Vdp 4m Vdmp 4m max max ¹Ts 4m ¹Bs 4m high low high low 50 – 12 12 – 240 + 250 – 400 80 – 15 15 11 – 300 + 250 – 500 80 120 – 20 20 15 – 400 + 250 – 600 120 180 – 25 25 19 – 500 + 350 – 700 180 200 – 30 30 23 – 600 + 350 – 800 Table — Tolerances for outer ring ¹Dmp 4m D mm over — including high low VDp 4m VDmp 4m max max ¹Cs 4m high low 50 – 14 14 11 – 240 50 80 – 16 16 12 – 300 80 120 – 18 18 14 – 400 120 150 – 20 20 15 – 500 150 180 – 25 25 19 – 500 180 250 – 30 30 23 – 600 250 315 – 35 35 26 – 700 © BSI 06-1999