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. ISBN 978-0-626-22204-8 SANS 1926:2008Edition 1.1SOUTH AFRICAN NATIONAL STANDARD Uniform provisions concerning the approval for the production of retreade
4、d pneumatic tyres for motor vehicles and their trailers WARNING Front-end standard. Can only be read in conjunction with SANS 20108. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 1926
5、:2008 Edition 1.1 Table of changes Change No. Date Scope Amdt 1 2008 Amended to delete reference to the Rubber Manufacturers Association in the body of the text. Foreword This South African standard was approved by National Committee SABS SC 31A, Tyres, rim dimensions and repairs Retreaded tyres and
6、 repairs, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was published in October 2008. This document supersedes SANS 1926:2005 (edition 1). Reference is made in 5.8 to the “relevant national authority”. In South Afric
7、a this means the Rubber Manufacturers Association (RMA). Amdt 1 A vertical line in the margin shows where the text has been technically modified by amendment No. 1. SANS 1926:2008 Edition 1.1 1 Contents Page Foreword 1 Scope 3 2 Normative references 3 3 Definitions and symbols 3 4 Requirements 3 5 M
8、odifications 3 SANS 1926:2008 Edition 1.1 2 This page is intentionally left blank SANS 1926:2008 Edition 1.1 3 Uniform provisions concerning the approval for the production of retreaded pneumatic tyres for motor vehicles and their trailers 1 Scope This standard specifies requirements for the product
9、ion of retreaded tyres intended to be fitted on motor vehicles and their trailers used on the road. 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 late
10、st edition of the referenced document (including any amendments) applies. Information on currently valid national and international standards can be obtained from the SABS Standards Division. SANS 1036/ISO 36, Rubber, vulcanized or thermoplastic Determination of adhesion to textile fabric. SANS 2010
11、8/ECE R108, Uniform provisions concerning the approval for the production of retreaded pneumatic tyres for motor vehicles and their trailers. 3 Definitions and symbols For the purposes of this standard, the definitions and symbols given in SANS 20108 apply. 4 Requirements Retreaded tyres for all veh
12、icles shall comply with the requirements of SANS 20108, as modified in accordance with clause 5 below. 5 Modifications 5.1 Delete 1.5 and replace it with the following: Tyres originally produced without type approval and without an “E“, “DOT“ or “J“ mark. 5.2 Delete 3.2.3.3, 4.1.4.1, 4.1.4.3, 4.1.4.
13、5 and 4.1.4.6. 5.3 Delete the words “in a language“ in 5.2, and replace it with “in English“. SANS 1926:2008 Edition 1.1 4 5.4 Delete 5.4 and replace it with the following: Before granting approval, the authorities shall be satisfied that retreaded tyres conform to SANS 20108 and that tests prescrib
14、ed in 6.7 and 6.8 have been successfully carried out on at least one sample of each retreaded tyre representative of the range of tyres produced by the retreading production unit. 5.5 Delete 6.1 and replace it with the following: Tyres shall not be accepted for first retread unless they have been ty
15、pe approved and bear an “E“, “DOT“, or “J“ mark. 5.6 Add the following at the end of 6.4.4.1(b): No carcass penetrations above 3 mm are permitted. There shall not be more than one penetration per quarter. 5.7 Delete 6.4.5 and insert it as 6.4.4.1(m). 5.8 Add the following at the end of 6.5.2: The te
16、xture of the buffed tread surface shall be within the relevant national authoritys (see foreword) range of 3 and 4. Amdt 1 5.9 Delete 6.5.3 and replace it with the following: Where precured material is to be used, the contours of the prepared area shall meet the requirements of the new tyre manufact
17、urer. 5.10 Change the wording “in the national language of the country in which the materials are to be used“ in 6.6.1(a) and (b) to “in English“. 5.11 Change 6.7.1 to read as follows: During or after retreading, the tyre shall be inflated to at least 1,5 bar (150 kPa) for examination. After curing,
18、 whilst a degree of heat is retained in a tyre, each retreaded tyre shall be examined to ensure that it is free from any apparent defects. Where there is any apparent defect in the profile of the tyre (e.g. blister, depression), the tyre shall be examined to determine the cause of this defect. 5.12
19、Change 6.7.2 to read as follows: Before, during, and after retreading, the tyre shall be checked for the integrity of its structure by means of a suitable inspection method (by spreading the beads or inflation to check the integrity of the tyre). 5.13 Change 6.7.5 to read as follows: The radial run-
20、out of the retreaded tyre shall not exceed 1,5 mm (+0,40 mm measuring tolerance) for hot retreads, and 3,14 mm (+1,00 mm measuring tolerance) for precured retreading. 5.14 Delete 6.7.6. SANS 1926:2008 Edition 1.1 5 5.15 Change 6.8.2 to read as follows: A retreaded tyre which, after undergoing the test for adhesion between casing and tread rubber, meets the minimum adhesion of 14 N/mm of width, shall be deemed to have passed the test. 5.16 Delete 6.8.3. 5.17 Delete test procedure in annex 7, and use the test method given in SANS 1036. Check for compliance with 5.15. SABS
