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1、 Reference number ISO 12301:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 12301 Second edition 2007-10-15 Plain bearings Quality control techniques and inspection of geometrical and material quality characteristics Paliers lisses Techniques de contrle de la qualit et vrifications des caractristiques d
2、e qualit gomtriques et des matriaux Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:12:17 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 123
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6、low. COPYRIGHT PROTECTED DOCUMENT ISO 2007 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 addr
7、ess below or ISOs member body in the country 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
8、 Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:12:17 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 12301:2007(E) ISO 2007 All rights reserved iii Contents Page Foreword iv 1 Scop
9、e 1 2 Normative references1 3 Terms and definitions .2 4 Symbols and units.4 5 Summary of defined quality characteristics.5 6 Geometrical quality characteristics.7 6.1 Wall thickness, s3.7 6.2 Outside diameter, Do.13 6.3 Inside diameter, Di.14 6.4 Width, B.17 6.5 Locating features.18 6.6 Lubricant f
10、eed and distribution features.19 6.7 Surface conditions.20 6.8 Crush height, a (peripheral length).21 6.9 Free spread.22 6.10 Straightness of sliding surface23 6.11 Joint face taper, h.24 6.12 Back contact.24 6.13 Joint displacement, B25 6.14 Height of thrust half-washer, H 25 6.15 Flatness 26 6.16
11、Flange diameter, Dfl.27 6.17 Distance between flanges, afl28 6.18 Flange thickness, sfl.29 6.19 Perpendicularity (squareness) of flange.30 6.20 Geometric deviations 31 7 Material quality characteristics35 7.1 Metallic solid materials .35 7.2 Metallic multilayer material.36 7.3 Polymer layer material
12、 38 7.4 Solid polymer material 39 7.5 Sintered material39 Annex A (informative) Calculation of tangential load40 Bibliography47 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/200
13、7 20:12:17 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 12301:2007(E) iv ISO 2007 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing I
14、nternational 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
15、 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 in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of tech
16、nical 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 requires approval by at least 75 % of the member bodies casting a vote. Attention is draw
17、n 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 12301 was prepared by Technical Committee ISO/TC 123, Plain bearings, Subcommittee SC 5, Quality analysis and assu
18、rance. This second edition cancels and replaces the first edition (ISO 12301:1992), which has been technically revised. (It also incorporates the Technical corrigendum ISO 12301:1992/Cor. 1:1995.) Copyright International Organization for Standardization Provided by IHS under license with ISO License
19、e=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:12:17 MSTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 12301:2007(E) ISO 2007 All rights reserved 1 Plain bearings Quality control techniques and inspection of geometrical an
20、d material quality characteristics 1 Scope This International Standard specifies quality control techniques and inspection of the geometrical and material quality characteristics of the following types of plain bearings: thin-walled half-bearings with or without flange, as specified in ISO 3548; met
21、allic thick-walled half-bearings (with and without flange) that are manufactured as halves but that are necessarily interchangeable and have the ratio s3 : Do 0,11; wrapped bushes, as specified in ISO 3547; unsplit metallic bushes (with and without flange) made from solid and multilayer materials an
22、d with outside diameters up to 230 mm; solid polymer bushes (with and without flange) with inside diameters up to 200 mm; ring-type thrust washers and pressed bimetallic half-thrust washers, as specified in ISO 6525 and ISO 6526, respectively; bushes made from sintered material, as specified in ISO
23、2795. 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 references, the latest edition of the referenced document (including any amendments) applies. ISO 2795, Plain bear
24、ings Sintered bushes Dimensions and tolerances ISO 3274 Geometrical Product Specifications (GPS) Surface texture: Profile method Nominal characteristics of contact (stylus) instruments ISO 3547-1, Plain bearings Wrapped bushes Part 1: Dimensions ISO 3547-2, Plain bearings Wrapped bushes Part 2: Test
25、 data for outside and inside diameters ISO 3547-3, Plain bearings Wrapped bushes Part 3: Lubrication holes, grooves and indentations ISO 3547-4, Plain bearings Wrapped bushes Part 4: Materials ISO 3547-5, Plain bearings Wrapped bushes Part 5: Checking the outside diameter ISO 3547-6, Plain bearings
26、Wrapped bushes Part 6: Checking the inside diameter Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:12:17 MSTNo reproduction or networking permitted without license from I
27、HS -,-,- ISO 12301:2007(E) 2 ISO 2007 All rights reserved ISO 3547-7, Plain Bearings Wrapped bushes Part 7: Measurement of wall thickness of thin-walled bushes ISO 3548, Plain bearings Thin-walled half bearings with or without flange Tolerances, design features and methods of test ISO 4287, Geometri
28、cal Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture parameters ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture ISO 4378-1, Plain bearings Terms, definitio
29、ns and classification Part 1: Design, bearing materials and their properties ISO 4384-1, Plain bearings Hardness testing of bearing metals Part 1: Compound materials ISO 4384-2, Plain bearings Hardness testing of bearing metals Part 2: Solid materials ISO 4386-1, Plain bearings Metallic multilayer p
30、lain bearings Part 1: Non-destructive ultrasonic testing of bond ISO 4386-2 Plain bearings Metallic multilayer plain bearings Part 2: Destructive testing of bond for bearing metal layer thicknesses W 2 mm ISO 4386-3, Plain bearings Metallic multilayer plain bearings Part 3: Non-destructive penetrant
31、 testing ISO 6524:1992, Plain bearings Thin-walled half bearings Checking of peripheral length ISO 6525, Plain bearings Ring type thrust washers made from strip Dimensions and tolerances ISO 6526, Plain bearings Pressed bimetallic half thrust washers Features and tolerances ISO 6691, Thermoplastic p
32、olymers for plain bearings Classification and designation 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 4378-1 and the following apply. 3.1 quality of plain bearing condition which renders a plain bearing fit to fulfil given requirements NOTE The g
33、iven requirements are generally dependent upon the intended use. 3.2 quality control techniques method, equipment and procedure by means of which the quality of a plain bearing is assessed 3.3 quality characteristic characteristic by means of which the quality of a plain bearing is judged 3.4 inspec
34、tion checking of one or more quality characteristics of a plain bearing with applicable requirements Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:12:17 MSTNo reproducti
35、on or networking permitted without license from IHS -,-,- ISO 12301:2007(E) ISO 2007 All rights reserved 3 3.5 uncertainty of measurement parameter, associated with the result of a measurement, that characterizes the dispersion of the values that could reasonably be attributed to the measurand Guide
36、 99 NOTE The uncertainty, u, should be evaluated using statistical methods, e.g. repeatability and reproducibility studies, or as shown below: ut= where t is the stochastic variable according to Students t distribution; t = 2 and corresponds to a statistical probability in measurement P = 95 %, for
37、which the probability of exceeding the value (1 P) = 0,05 or 5 %; is the standard deviation of the whole lot. NOTE 1 The uncertainty of measurement is normally 10 % of the tolerance. 3.6 measuring points agreed points established to facilitate agreement on checking NOTE The establishment of measurin
38、g points does not preclude the need to comply with dimensional specifications in other areas. 3.7 measuring lines agreed lines established to facilitate agreement on checking NOTE The establishment of measuring lines does not preclude the need to comply with dimensional specifications in other areas
39、. 3.8 tolerance range between the upper specified limit and the lower specified limit Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:12:17 MSTNo reproduction or networkin
40、g permitted without license from IHS -,-,- ISO 12301:2007(E) 4 ISO 2007 All rights reserved 4 Symbols and units For the purposes of this document, the symbols and units given in Table 1 apply. Table 1 Symbol Parameter SI unit a Crush height millimetres a Measured change in a millimetres ach Distance
41、 to measuring position millimetres aE Distance between gauge faces millimetres afl Distance between flanges millimetres Aeff Effective cross-section square millimetres B Width millimetres B Joint displacement millimetres dch Diameter of the checking block bore millimetres DH Housing diameter millime
42、tres Dfl Flange diameter millimetres Dfs Diameter measured across the joint in the free state; free spread diameter millimetres Di Inside diameter millimetres Do Outside diameter millimetres Elastic reduction millimetres Fch Checking load newtons Fpin Measuring pin load newtons Ftan Tangential load
43、of bearing as fitted newtons hch Radius for flange thickness measurement millimetres h Joint face taper millimetres H Height millimetres M Number of measuring lines s1 Thickness of the backing layer millimetres s2 Thickness of the bearing material layer millimetres s2, red Thickness of the bearing m
44、aterial layer, reduced millimetres sfl Flange thickness millimetres s3 Wall thickness millimetres T Tolerance millimetres t Stochastic variable u Uncertainty of measurement millimetres x1, x2, ., xi Individual measured values millimetres y Flatness gauge gap millimetres max Maximum diametral deforma
45、tion in compression millimetres min Minimum diametral deformation in compression millimetres Standard deviation tan Tangential strength newtons per square millimetre Stress newtons per square millimetre Copyright International Organization for Standardization Provided by IHS under license with ISO L
46、icensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:12:17 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 12301:2007(E) ISO 2007 All rights reserved 5 5 Summary of defined quality characteristics A summary of defined quality characteristics i
47、s given in Table 2 for the convenience of users of this International Standard, as guidance indicating which defined quality characteristics are relevant to each type of bearing. The sequence of the characteristics listed in Table 2 does not determine their importance. The manufacturer and user shal
48、l agree on priorities for the quality characteristics that, from their points of view, are required to assure reliability and lifetime of the product. Table 2 Type of plain bearing Relevant clause/ subclause number Quality characteristics Thin- walled half- bearing Thick- walled half- bearing Wrapped bush Unsplit metallic bush Solid polymer bush Sintered