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1、 Reference number ISO 3245:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 3245 Third edition 2007-12-01 Rolling bearings Needle roller bearings, drawn cup without inner ring Boundary dimensions and tolerances Roulements Douilles aiguilles sans bague intrieure Dimensions dencombrement et tolrances Copyr
2、ight International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 3245:2007(E) PDF disclaimer This PDF file ma
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5、on parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007
6、 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 either ISO at the address below or ISOs member body in the count
7、ry of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under lic
8、ense with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 3245:2007(E) ISO 2007 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worl
9、dwide federation of national standards 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
10、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. International Standards are drafted i
11、n accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard
12、 requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 3245 was prepared by Tec
13、hnical Committee ISO/TC 4, Rolling bearings, Subcommittee SC 5, Needle roller bearings. This third edition cancels and replaces the second edition (ISO 3245:1997), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Lice
14、nsee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan,
15、IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 3245:2007(E) ISO 2007 All rights reserved 1 Rolling bearings Needle roller bearings, drawn cup without inner ring Boundary dimensions and tolerances 1 Scope Th
16、is International Standard specifies the boundary dimensions and preferred dimensions to be used for drawn cup needle roller bearings without inner ring as well as the minimum chamfer dimension limits. Also specified are the closed end thickness dimensions for bearings with closed end drawn cups. In
17、addition, dimensional tolerances and methods for checking the needle roller complement bore diameter are specified. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refe
18、rences, the latest edition of the referenced document (including any amendments) applies. ISO 286-2:1988, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 1132-1, Rolling bearings Tolerances Part 1: Terms and definitions ISO 1132
19、-2:2001, Rolling bearings Tolerances Part 2: Measuring and gauging principles and methods ISO 5593, Rolling bearings Vocabulary ISO 10579, Technical drawing Dimensioning and tolerancing Non-rigid parts ISO 15241, Rolling bearings Symbols for quantities 3 Terms and definitions For the purposes of thi
20、s document, the terms and definitions given in ISO 1132-1 and ISO 5593 apply. 4 Symbols For the purposes of this document, the symbols given in ISO 15241 and the following apply. The symbols (except those for tolerances) shown in Figure 1, and the values given in Tables 1 to 4 denote nominal dimensi
21、ons unless otherwise specified. C drawn cup width C1 end thickness of profiled end drawn cup C2 end thickness of flat end drawn cup Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01
22、/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 3245:2007(E) 2 ISO 2007 All rights reserved D drawn cup outside diameter Fw bore diameter of needle roller complement Fws min smallest single bore diameter of needle roller complement 1) r chamfer dimension
23、rs min smallest single chamfer dimension Cs deviation of single drawn cup width a) With open ends b) With closed end Figure 1 Needle roller bearings, drawn cup without inner ring 1) The smallest single bore diameter of the needle roller complement is the diameter of the cylinder which, when placed i
24、n the needle roller complement bore, results in zero radial clearance in at least one radial direction. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reprodu
25、ction or networking permitted without license from IHS -,-,- ISO 3245:2007(E) ISO 2007 All rights reserved 3 5 Boundary dimensions The boundary dimensions of drawn cup needle roller bearings, without inner ring, closed end and open ends, of diameter series 1D are given in Table 1, those of diameter
26、series 2D are given in Table 2. The maximum limits of C1 and C2 are given to enable the user to avoid contact between the end face of the shaft and the internal end face of the drawn cup. If contact between these faces is required, the user should consult the bearing manufacturer. Table 1 Boundary d
27、imensions of needle roller bearings without inner ring, with open ends or closed end Diameter series 1D Dimensions in millimetres C Dimension series C1a C2a rs minb Fw D 21D 31D 41D 51D 61D 71D 81D 91D max. max. 4 8 7 8 9 1,9 1 0,3 5 9 7 8 9 1,9 1 0,4 6 10 7 8 9 10 1,9 1 0,4 7 11 7 8 9 10 12 1,9 1 0
28、,4 8 12 7 8 9 10 12 1,9 1 0,4 9 13 7 8 9 10 12 14 1,9 1 0,4 10 14 7 8 9 10 12 14 1,9 1 0,4 12 16 7 8 9 10 12 14 1,9 1 0,4 14 20 10 12 14 16 18 20 2,8 1,3 0,4 15 21 10 12 14 16 18 20 2,8 1,3 0,4 16 22 10 12 14 16 18 20 2,8 1,3 0,4 17 23 10 12 14 16 18 20 2,8 1,3 0,4 18 24 10 12 14 16 18 20 2,8 1,3 0,
29、4 20 26 10 12 14 16 18 20 2,8 1,3 0,4 22 28 10 12 14 16 18 20 2,8 1,3 0,4 25 32 12 14 16 18 20 24 28 32 2,8 1,3 0,8 28 35 12 14 16 18 20 24 28 32 2,8 1,3 0,8 30 37 12 14 16 18 20 24 28 32 2,8 1,3 0,8 32 39 12 14 16 18 20 24 28 32 2,8 1,3 0,8 35 42 12 14 16 18 20 24 28 32 2,8 1,3 0,8 38 45 12 14 16 1
30、8 20 24 28 32 2,8 1,3 0,8 40 47 12 14 16 18 20 24 28 32 2,8 1,3 0,8 42 49 12 14 16 18 20 24 28 32 2,8 1,3 0,8 45 52 12 14 16 18 20 24 28 32 2,8 1,3 0,8 50 58 14 16 18 20 24 28 32 36 2,8 1,6 0,8 55 63 14 16 18 20 24 28 32 36 2,8 1,6 0,8 60 68 14 16 18 20 24 28 32 36 2,8 1,6 0,8 65 73 14 16 18 20 24 2
31、8 32 36 2,8 1,6 0,8 70 78 14 16 18 20 24 28 32 36 2,8 1,6 0,8 NOTE Underlined values are the preferred dimensions. a No minimum limit is specified for thickness of the closed end. b No maximum limit is specified for chamfer dimensions. Copyright International Organization for Standardization Provide
32、d by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 3245:2007(E) 4 ISO 2007 All rights reserved Table 2 Boundary dimensions of needle roller bearings witho
33、ut inner ring, with open ends or closed end Diameter series 2D Dimensions in millimetres C Dimension series C1a C2a rs minb Fw D 22D 32D 42D 52D 62D 72D 82D max. max. 8 14 10 12 14 2,8 1,3 0,4 9 15 10 12 14 16 2,8 1,3 0,4 10 16 10 12 14 16 2,8 1,3 0,4 12 18 10 12 14 16 18 2,8 1,3 0,4 14 22 12 14 16
34、18 20 24 2,8 1,3 0,4 15 23 12 14 16 18 20 24 2,8 1,3 0,4 16 24 12 14 16 18 20 24 2,8 1,3 0,8 17 25 12 14 16 18 20 24 2,8 1,3 0,8 18 26 12 14 16 18 20 24 2,8 1,3 0,8 20 28 12 14 16 18 20 24 2,8 1,3 0,8 22 30 12 14 16 18 20 24 2,8 1,3 0,8 25 35 14 16 18 20 24 28 32 3,4 1,6 0,8 28 38 14 16 18 20 24 28
35、32 3,4 1,6 0,8 30 40 14 16 18 20 24 28 32 3,4 1,6 0,8 32 42 14 16 18 20 24 28 32 3,4 1,6 0,8 35 45 14 16 18 20 24 28 32 3,4 1,6 0,8 38 48 14 16 18 20 24 28 32 3,4 1,6 0,8 40 50 14 16 18 20 24 28 32 3,4 1,6 0,8 42 52 14 16 18 20 24 28 32 3,4 1,6 0,8 45 55 14 16 18 20 24 28 32 3,4 1,6 0,8 a No minimum
36、 limit is specified for thickness of the closed end. b No maximum limit is specified for chamfer dimensions. 6 Tolerances 6.1 Tolerances for the bore diameter of needle roller complement Drawn cup needle roller bearings are non-rigid parts according to the definition in ISO 10579 and require the out
37、side diameter of the drawn cup to be restrained in a ring gauge for verification of the bore diameter of the needle roller complement. The free state condition defined in ISO 10579 is valid for the tolerances applied to dimensions C, C1, C2 and rs min. The tolerances given in Tables 3 and 4 for the
38、smallest single bore diameter of needle roller complement, Fws min, are valid on the condition that the drawn cup is pressed into a ring gauge having a radial cross- section as specified in ISO 1132-2:2001, 7.4 and 7.5. The bore diameter of the ring gauge shall be in accordance with Tables 3 and 4.
39、Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 3245:2007(E) ISO 2007 All rights reserv
40、ed 5 The ring gauge bore diameter values specified in Tables 3 and 4 are equal to the low limit of tolerance class N6 as specified in ISO 286-2:1988, when applied to the nominal outside diameter of drawn cup, D. If the actual bore diameter of the ring gauge deviates from this dimension, the limit to
41、lerances for the smallest single bore diameter of needle roller complement, Fws min, should be corrected to compensate for the variation in the bore diameter of the ring gauge. However, the maximum limit of the bore diameter of the ring gauge should be the corresponding high limit of tolerance class
42、 N6 as specified in ISO 286-2:1988. Table 3 Tolerances for the bore diameter of needle roller complement Diameter series 1D Tolerances for Fws minb Fw D a Bore diameter of ring gauge m mm mm mm high low 4 8 7,984 5 9 8,984 6 10 9,984 +28 +10 7 11 10,98 8 12 11,98 9 13 12,98 10 14 13,98 +31 +13 12 16
43、 15,98 14 20 19,976 15 21 20,976 16 22 21,976 17 23 22,976 18 24 23,976 +34 +16 20 26 25,976 22 28 27,976 25 32 31,972 28 35 34,972 30 37 36,972 +41 +20 32 39 38,972 35 42 41,972 38 45 44,972 40 47 46,972 42 49 48,972 45 52 51,967 50 58 57,967 +50 +25 55 63 62,967 60 68 67,967 65 73 72,967 70 78 77,
44、967 +60 +30 a No deviations are specified for the outside diameter of drawn cup D. The bearing manufacturer shall ensure a fit corresponding to the function. b The values in this table give the limits of the difference between Fws min and Fw. Copyright International Organization for Standardization
45、Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/01/2008 21:29:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 3245:2007(E) 6 ISO 2007 All rights reserved Table 4 Tolerances for the bore diameter of needle r
46、oller complement Diameter series 2D Tolerances for Fws minb Fw D a Bore diameter of ring gauge m mm mm mm high low 8 14 13,98 9 15 14,98 10 16 15,98 +31 +13 12 18 17,98 14 22 21,976 15 23 22,976 16 24 23,976 17 25 24,976 18 26 25,976 +34 +16 20 28 27,976 22 30 29,976 25 35 34,972 28 38 37,972 30 40
47、39,972 +41 +20 32 42 41,972 35 45 44,972 38 48 47,972 40 50 49,972 42 52 51,967 45 55 54,967 +50 +25 a No deviations are specified for the outside diameter of drawn cup D. The bearing manufacturer shall ensure a fit corresponding to the function. b The values in this table give the limits of the difference between Fws min and Fw. 6.2 Tolerances for the drawn cup width The tolerance for the drawn cup width, C, is given in Table 5. Table 5 Tolerances for the drawn cup width Values in millimetres Cs C high low All widths 0 0,3 7 Measurement of the smallest single bore diameter of need