1、DEUTSCHE NORM Julv 1999 Spherical plain bearings Part 1 : Radial spherical plain bearings (IS0 12240-1 : 1998) DIN IS0 12240-1 ICs 21.1 00.20 This standard, together with edition, supersedes DIN 648, August 1987 edition. DIN IS0 12240-4, July 1999 Gelenklager - Teil 1 : Radial-Gelenklager (IS0 12240
2、-1 : 1998) This standard incorporates International Standard IS0 12240-1 Spherical plain bearings - Part 1 : Radial spherical 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
3、was the Technical Committee Walzlager. The DIN Standards corresponding 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 IS0 12240-4 DIN IS0 12240-4 Amendments DIN 648, A
4、ugust 1987 edition, has been superseded by the specifications of DIN IS0 12240-1 and DIN IS0 12240-4. Previous editions DIN 648: 1972-01, 1987-08. National Annex NA Standards referred to (and not included in Normative references) DIN 620-6 Chamfer dimension limits for rolling bearings DIN IS0 12240-
5、4 Spherical plain bearings - Part 4: Angular contact radial spherical plain bearings IS0 Standard comprises 14 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN IS0 12240-1 : 1999-0 Y Deutsches Institut fr Normung e. V., Berlin. wth Verlag GmbH, D-10772 B
6、erlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 10 Sales No. 0410 12.99 Page 1 IS0 12240-1 : 1998 Spherical plain bearings Part 1: Radial spherical plain bearings Foreword IS0 (the International Organization for Standardization) is a worldwide federation
7、 of national standard bodies (IS0 member bodies). 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. I
8、nternational organizations, governmental and 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 electrotechnical standardization. Draft International Standards adopted by the technical
9、 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 IS0 12240-1 was prepared by Technical Committee ISO/lC 4, Rolling bearings, Subcommittee SC 7, Spherical
10、 plain bearings. This first edition cancels and replaces IS0 6124-1:1987, IS0 6124-2:1982, IS0 6124-3:1982 and IS0 6125:1982 of which it constitutes a technical revision. IS0 12240 consists of the following parts, under the general title Spherical plain bearings: - Part 1: Radial spherical plain bea
11、rings - Part 2: Angular contact radial spherical plain bearings - Part 3: Thrust spherical plain bearings - Part 4: Spherical plain bearing rod ends 1 Scope This part of IS0 12240 specifies dimension series, tolerances and radial internal clearances for radial spherical plain bearings. The dimension
12、s and tolerances specified in this part of IS0 12240 have been selected to permit the design of radial spherical plain bearings using a wide choice of sliding material combinations. The specified tolerance values apply to finished, radial spherical plain bearings before any coating, plating, ring sp
13、litting or ring fracturing. In the case of surface treated radial spherical plain bearings, there may be slight deviations from the specified tolerance values. Radial spherical plain bearings need not conform to the designs illustrated but compliance is required as regards the dimensions, tolerances
14、 and radial internal clearances specified. NOTE - Spherical plain bearings for airframe applications are not covered by this part of IS0 12240. Page 2 IS0 12240-1 : 1998 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of
15、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 recent editions of the standards indicated below.
16、 Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 582:1995, Rolling bearings - Chamfer dimensions - Maximum values. IS0 1132-1: -11, Rolling bearings - Tolerances - Part I: Terms and definitions. IS0 681 1:1998, Spherical plain bearings - Vocabulary. IS0 1224
17、0-4: 1998, Spherical plain bearings - Part 4: Spherical plain bearing rod ends. 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 the figures and the values given in the tab
18、les denote nominal dimensions unless specified otherwise. Inner ring width Outer ring width Outside diameter Bore diameter Outside diameter of inner ring face Sphere diameter Smallest single chamfer dimension, inner ring Smallest single chamfer dimension, outer ring Variation of mean outside diamete
19、r Variation of mean bore diameter Variation of outside diameter in a single radial plane Variation of bore diameter in a single radial plane Angle of tilt 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 m
20、ean bore diameter in a single plane 1) To be published. (Revision of IS0 1132:1980) 2) The corresponding maximum chamfer dimensions are given in table 1 of IS0 5821985. Page 3 IS0 12240-1 : 1998 4 Angles of tilt, a The specified angles of tilt (approximate values) represent the angles by which the a
21、xes of the inner ring and of the outer ring may be inclined in relation to each other without reducing the projected theoretical contact area of the two bearing rings when the two ring axes are parallel to each other. NOTE- Attention is drawn to the fact that after mounting a radial spherical plain
22、bearing on a shaft and into a housing, the angle through which the bearing can tilt may be restricted by the design of the adjacent components. 5 Dimensions, tolerances and radial internal clearances 5.1 Dimensions See figures 1 and 2, and tables 1 to 6. Figure 1 - Radial spherical plain bearings, d
23、imension series E, G, C, K, H Page 4 IS0 12240-1 : 1998 Table 1 - Radial spherical plain bearings, dimension series E F- 60 70 80 90 1 O0 110 120 140 160 180 200 220 1 I) Reference only. I Page 5 IS0 12240-1 : 1998 Table 2 - Radial spherical plain bearings, dimension series G 260 400 205 120 283 350
24、 15 280 430 210 120 310 375 1,l 1,l 15 1) Reference only. Page 6 IS0 12240-1 : 1998 Table 3 - Radiai spherical plain bearings, dimension series C I 1) Reference only. Page 7 IS0 12240-1 : 1998 d rnm 3 5 6 D B C d, d, 1) rs rl s a - min. min. mm mm mm mrn mrn rnm rnm 10 6 4,5 5.1 7,9 02 02 14 13 8 6
25、7,7 11,l 03 03 13 16 9 6,75 8,9 12,7 03 03 13 - o 1) Reference only. Page 8 IS0 12240-1 : 1998 850 900 950 1 O00 Table 5 - Radial spherical plain bearings, dimension series H 1220 600 565 936 1112 3 7,5 2 1250 635 600 949 1142 3 7,5 2 1360 670 635 1045 1242 4 7,5 2 1 450 710 67 O 1103 1312 4 7,5 2 )
26、 Reference only. Page 9 IS0 12240-1 : 1998 11 1) With or without recess, at manufacturers discretion Figure 2 - Radial spherical plain bearing with relubrication facility and extended inner ring, dimension series W Table 6 - Radial spherical plain bearings, dimension series W 40 80 120 160 200 290 4
27、00 I 320 1 520 250 120 317 350 2,5 1.1 4 320 160 405 450 23 4 4 1) Reference only. 2) Relubrication facility only via outer ring or without relubrication facility, at manufacturers discretion. Page 10 IS0 12240-1 : 1998 d mm over including 25 3 3 6 6 10 5.2 Tolerances Admp vdP Vdmp ABS K, W K, W K,
28、W K W high low rnax. max. high I ow high low +IO O 10 6 O - 120 O - 100 +I2 O 12 9 O - 120 O - 120 +I5 O 15 11 O - 120 O - 150 Pm Pm Prn Pm See tables 7 to IO. Table 7 - Tolerances for inner ring, dimension series E, G. C, H Page 11 IS0 12240-1 : 1998 Table 9 - Tolerances for outer ring, dimension s
29、eries E, G, C, W, H Table 10 - Tolerances for outer ring. dimension series K Page 12 IS0 12240-1 : 1998 d Group 2 5.3 Radial internal clearance Group N Group 3 Radial internal clearance is the arithmetical mean of the radial distances through which one of the rings may be displaced relative to the o
30、ther, from one eccentric extreme position to the diametrically opposite extreme position. On account of the permissible form tolerances for the two rings, it is recommended to determine the actual radial internal clearance by several measurements in different angular directions. It is necessary in t
31、he case of large radial spherical plain bearings (e.g.d 3 100 mm) to determine the radial internal clearance by measuring the mean sphere diameter of the inner and outer rings before final bearing assembly. See tables 11 to 17. 5.3.1 Radial spherical plain bearing with sliding contact surfaces: stee
32、l/steel 284 214 318 239 Table 12 - Radial internal clearance, dimension series G d rnm over including 300 340 ._ Group N Pm min. rnax. 125 239 Table 14 - Radial internal clearance, dimension series K 340 420 530 670 850 1 060 1 400 1700 d 420 135 26 1 530 145 285 670 160 320 850 170 350 1060 195 405
33、 1 400 220 470 1700 240 540 2 O00 260 610 Group 2 Group N Group 3 Table 15 - Radial internal clearance, dimension series H d including 600 750 Group 2 Group N Group 3 Page 14 IS0 12240-1 : 1998 min. max. 8 32 d mm min. rnax. min. max. 32 68 68 104 including I+ 10 12 15 18 40 40 82 82 124 50 50 1 O0
34、1 O0 150 60 60 120 120 180 72 72 142 142 212 12 20 Table 16 - Radial internal clearance, dimension series W I I 20 32 50 90 125 200 Group 2 32 50 90 125 200 250 Group N Group 3 I 85 1 O0 125 135 um I um I um 165 165 245 192 192 284 239 239 353 261 261 387 250 320 18 135 5.3.2 Radial spherical plain bearing with sliding contact surfaces: steel/bronze Table 17 - Radial internal clearance, dimension series K d Group 2 Group N Group 3
