1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 21.100.10 ISBN 0-626-16230-0 SANS 12308:2005Edition 1ISO 12308:1994Edition 1SOUTH AFRICAN NATIONAL STANDARD Plain bearings Quality assurance Sample t
4、ypes Definitions, applications and testing This national standard is the identical implementation of ISO 12308:1994 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 000
5、1 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 12308:2005 Edition 1 ISO 12308:1994 Edition 1 Table of changes Change No. Date Scope Abstract Defines the types of plain bearing samples such as are exchanged between purchaser and manufactu
6、rer. Keywords bearings, designation, marking, plain bearings, quality control, test specimens. National foreword This South African standard was approved by National Committee StanSA TC 5120.02, Bearings, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/
7、TBT agreement. INTERNATIONAL STANDARD ISO 12308 First edition 1994-02-01 Plain bearings - Quality assurance - Sample types - Definitions, applications and testing Paliers lisses - Assurance de Ia qualite - Types dkhantillons - De finitions, u tilisa tion et essais Reference number ISO 12308:1994(E)
8、ISO 12308:1994(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a sub
9、ject 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 (I
10、EC) on all matters of electrotechnical standardization. Draft International Standards adopted by the Itechnical 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 St
11、andard ISO 12308 was prepared by Technical Committee ISO/rC 123, Plain bearings, Subcommittee SC 5, Quality analysis and as- surance. Annex A of this International Standard is for information only. 0 ISO 1994 All rights reserved. Unless otherwise specified, no part of this publication may be reprodu
12、ced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-l 211 Geneve 20 l Switzerland Printed in Switzerland ii INTERNATIONAL STA
13、NDARD 0 ISO ISO 12308:1994(E) Plain bearings - Quality assurance - Sample types - Definitions, applications and testing 1 Scope This International Standard defines the types of plain bearing samples such as are exchanged between purchaser and manufacturer. In the field of internal combustion engines
14、 and other series production, it is necessary to work with differ- ent types of samples depending on the purpose. Different types of samples are - samples used for tests and examinations which are carried out in the experimental Stage and Pilot lot Stage; these include fitting samples, prototype sam
15、ples and intermediate samples; - samples used to prove that the qualityl) is in ac- cordante with the quality requirements (dimen- sions, material and Performance specification); these include initial samples and reference sam- ples and, if necessary, intermediate samples; - samples which give selec
16、tive information about particular quality characteristics of a plain bearing, relating to their conformity with the specifications; these involve reference and characteristic modifi- cation samples. of this International Standard. At the time of publi- cation, the edition indicated was valid. All St
17、andards are subject to revision, and Parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent edition of the Standard indicated below. Mem- bers of IEC and ISO maintain registers of currently valid International Standards.
18、 ISO 12301 :1992, Plain bearings - Quality control techniques and inspection of geometrical and material quality characteristics. 3 Inspection and test report for samples Together with the samples, the manufacturer shall supply a completed test report to the purchaser with data on dimensions, materi
19、al and/or Performance, as appropriate. In the fields of application listed in clause 1, the “Initial Sample Test Report” is used for the initial samples and the characteristic modification samples. When the purchaser carries out an in- spection, he informs the manufacturer about the re- sults. The t
20、est reports are kept by the manufacturer on agreement between the manufacturer and purchaser. 4 Marking 2 Normative reference The following Standard contains provisions which, through reference in this text, constitute provisions All Sample supplies shall be marked conspicuously by the manufacturer.
21、 The kind of marking is to be agreed between the manufacturer and purchaser. 1) See ISO 3534 and ISO 8402 for further information. 1 ISO 12308:1994(E) 0 ISO 5 Types of plain bearing samples, definition and manufacturing process, application and testing See table 1. 6 Designation EXAMPLE Designation
22、of an initial Sample (S4) with test report: Sample ISO 12308 - S4 Table 1 rtting tests on stationary ma- Fitting dimensions only chines, intemal combustion en- Complete data of each fitting dimension for each bearing Recording of these individual test results in the test report by the purchaser - Th
23、ese samples arc manufactured using available - functional tests, e.g. exper- imental run-in machines, internal combustion en- gines, gear boxes etc. Agreed specified quality charac- Complete quality testing of all specified quality characteristics carried out on the quantity - performante in test ri
24、g, e.g. Recording of these individual wear resistance test results in the test report NOTE - The number of sam- - for establishing the specifi- ples should not exceed 200. cation of quality character- istics (dimensions I ntermediate Plain bearing which corresponds Pilot lot and initial series Quali
25、ty characteristics in ac- to a large degree to the “initial cordante with ISO 12301 Sample”, but has only partially been manufactured by means of the equipment and processes 1 Use to be agreed between Quantity tested should be 20 used for series production manufacturer and purchaser. 2 Intermediate
26、Sample shall be Recording of these individual substituted by the “initial sam- test results in the test report The “non-series” process cy- Quantity tested should be 20 NOTE - The initial Sample is to furnish the proof that the manu- facturer is in a Position to com- ply with the quality requirement
27、s (dimensions, ma- terial, function, etc.) requested by the purchaser. Recording of these individual test results in the test report l lt is advisable to keep one of the accepted samples avail- able at the manufacturers and/or purchasers premises for a period to be agreed. 0 ISO ISO 12308:1994(E) Ty
28、pe of Sample Reference Sample Symbol Definition and manufacturing Application Testing process (by manufacturer) s5 Plain bearing representing the The reference samples are de- Dimensional and material test- desired value of a quality livered to the purchaser for the characteristic ing of all quality
29、 characteristics control test together with the agreed between manufacturer NOTE - These samples are determined actual values of all and purchaser (e.g. nip, bearing taken by the manufacturer from quality characteristics desig- material composition) the series production or from nated for the test,
30、in Order to the delivery ready for despatch check, for example, the com- Test data to be given by the parability of the test manufacturer and tested as agreed upon with the purchaser. methods/equipment used NOTE - The reported test val- ues may Substitute a receiving inspection carried out at the pu
31、rchasers premises. Characteristic modification sam- Ple S6 Plain bearing manufacturer after Series assembly after approval the execution of a specification Only those quality character- modif icaton istics concerned by the modifi- cation need be tested Quantity tested should be 20 max. Recording of
32、these individual test results in the test report 3 ISO 12308:1994(E) Annex A (informative) Bibliography l ISO 3534-1:1993, Statistics - Vocabulary and symbols - Part 1: Probability and general sta- tistical terms. 3 ISO 3534-3:1985, Statistics - Vocabulary and symbols - Part 3: Design of experiments. 2 ISO 3534-2:1993, Statistics - Vocabulary and Symbols - Part 2: Sta tistical quality con trol. 4 ISO 8402: 1986, Quality - Vocabulary. 4 Standards South AfricaThis s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .
