1、DEUTSCHE NORM July 199 Spherical plain bearings Part 2: Angular contact radial spherical plain bearings (IS0 12240-2 : 1998) DIN - IS0 12240-2 ICs 21.1 00.20 Gelenklager - Teil 2: Radial-Schrggelenklager (IS0 12240-2 : 1998) This standard incorporates International Standard IS0 12240-2 Spherical pla
2、in bearings - Part 2: Angular contact radial sph ri c I plain bearings. A comma is used as the decimal marker. National foreword This standard has been prepared by ISO/TC 4. The responsible German body involved in its preparation was the Technical Committee Walzlager. The DIN Standards corresponding
3、 to the International Standards referred to in clause 2 of the IS0 Standard are as follows: IS0 Standard DIN Standard IS0 1132 DIN IS0 1132 IS0 681 1 DIN IS0 6811 IS0 582 DIN 620-6 National Annex NA Standard referred to (and not included in Normative references) DIN 620-6 Chamfer dimension limits fo
4、r rolling bearings IS0 Standard comprises 5 pages. Q No pari of this standard may be reproduced without the prior permission of Beuth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN IS0 12240-2 : 1999-1 DIN Deutsches Institut fr Normung e.
5、 V., Berlin. English price group 05 Sales No. 0405 12.99 Page 1 IS0 12240-2 : 1998 Spherical plain bearings Part 2: Angular contact radial spherical plain bearings Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standard bodies (IS0 member bodi
6、es). The work of preparing International Standards is normally carried out through IS0 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
7、non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of eiectrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodi
8、es for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 12240-2 was prepared by Technical Committee ISOflC 4, Rolling bearings, Subcommittee SC 7, Spherical plain bearings. IS0 12240 consists of the fo
9、llowing parts, under the general title Spherical plain bearings: - Part I: 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 Page 2 IS0 12240-2 : 1998 1 Scope This part of IS0
10、 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 des
11、ign 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 IS0 12240. 2 Normative references The following standards contain provisions which, through refe
12、rence in this text, constitute provisions of this part of IS0 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 IS0 12240 are encouraged to investigate the possibility of applying the most rece
13、nt editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 582 : 1995, Rolling bearings - Chamfer dimensions - Maximum values. IS0 1132-1: -I), Rolling bearings - Tolerances - Part 1: Terms and definitions. IS0 681 1:1998,
14、Spherical plain bearings - Vocabulary. 3 Definitions and symbols For the purposes of this part of IS0 12240, the definitions given in IS0 1132-1 and IS0 6811 apply. The symbols (except those for tolerances) shown in figure 1 and the values given in the tables denote nominal dimensions unless specifi
15、ed otherwise. B Inner ring width C Outer ring width D Outside diameter Dl Bore diameter of outer ring 1) To be published. (Revision of IS0 1132:1980) Page 3 IS0 12240-2 : 1998 d dl dk rs min21 ris min21 S T VDrnp “drnp “DP VdP Acs ADmp Adrnp A7S Bore diameter Outside diameter of inner ring Sphere di
16、ameter Smallest single chamfer dimension, inner ring Smallest single chamfer dimension, outer ring Distance between sphere diameter centre and inner ring back face Bearing width Variation of mean outside diameter Variation of mean bore diameter Variation of outside diameter in a single radial plane
17、Variation of bore diameter in a single radial plane Deviation of a single inner ring width Deviation of a single outer ring width Deviation of mean outside diameter in a single plane Deviation of mean bore diameter in a single plane Deviation of the actual bearing width 4 Dimensions and tolerances 4
18、.1 Dimensions See figure 1 and table 1. Figure 1 - Angular 7 I D 8 I u contact radial spherical plain bearing, dimension series A 2) The corresponding maximum chamfer dimensions are given in table 1 of IS0 582:1995. Page 4 IS0 12240-2 : 1998 d D B C T dk ) dl Dl max. rnax. s= max. 25 47 15 14 15 42 41,5 32 28 52 16 15 16 47 46,5 36 30 55 17 16 17 50 49,5 37 S r9 Is = min. 1 0,6 1 1 2 1 Page 5 IS0 12240-2 : 1998 4.2 Tolerances See tables 2 and 3. Table 2 - Tolerances for inner ring and bearing width Table 3 - Tolerances for outer ring 180 250 O - 30 30 23 O - 600 250 315 O - 35 35 26 O - 700
