ISO-3601-4-2008.pdf
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1、 Reference number ISO 3601-4:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 3601-4 First edition 2008-06-01 Fluid power systems O-rings Part 4: Anti-extrusion rings (back-up rings) Transmissions hydrauliques et pneumatiques Joints toriques Partie 4: Bagues anti-extrusion ISO 3601-4:2008(E) PDF disclaim
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4、ile; the PDF-creation 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 PROTECTE
5、D DOCUMENT ISO 2008 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 membe
6、r 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 2008 All rights reserved ISO 3601-4:2008(E) ISO 2008 All rights reserved iii Contents Pa
7、ge Foreword iv Introduction v 1 Scope 1 2 Normative references1 3 Terms and definitions .1 4 Symbols2 5 General requirements related to O-ring housings .2 6 Types of anti-extrusion (back-up) rings3 6.1 Spiral type, T1 3 6.2 Angle cut type, T25 6.3 Solid type, T35 6.4 Angle cut concave type, T4 6 6.5
8、 Solid concave type, T57 7 Positioning of anti-extrusion rings in housings.8 8 Anti-extrusion ring designation code and materials8 8.1 Designation code.8 8.2 Materials .9 9 Dimensions and tolerances9 9.1 Axial and radial widths of anti-extrusion rings.9 9.2 Outside diameters of anti-extrusion rings
9、for piston sealing applications.10 9.3 Inside diameters of anti-extrusion rings for rod sealing applications.11 10 Identification statement (reference to this part of ISO 3601) .11 ISO 3601-4:2008(E) iv ISO 2008 All rights reserved Foreword ISO (the International Organization for Standardization) is
10、 a worldwide 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 represen
11、ted 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 (IEC) on all matters of electrotechnical standardization. International Standards are dr
12、afted in 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 S
13、tandard 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 3601-4 was prepar
14、ed by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7, Sealing devices. ISO 3601 consists of the following parts, under the general title Fluid power systems O-rings: Part 1: Inside diameters, cross-sections, tolerances and designation codes Part 2: Housing dimensions for gene
15、ral applications Part 3: Quality acceptance criteria Part 4: Anti-extrusion rings (back-up rings) Part 5: Suitability of elastomeric materials for industrial applications ISO 3601-4:2008(E) ISO 2008 All rights reserved v Introduction In fluid power systems, power is transmitted and controlled throug
16、h a fluid (liquid or gas) under pressure within an enclosed circuit. Where high pressures are encountered, it is recommended that an anti-extrusion ring (back-up ring) be incorporated within the O-ring housing to limit extrusion of the O-ring between the metal parts (e.g. cylinder bore and piston or
17、 rod and housing). -,-,- INTERNATIONAL STANDARD ISO 3601-4:2008(E) ISO 2008 All rights reserved 1 Fluid power systems O-rings Part 4: Anti-extrusion rings (back-up rings) 1 Scope This part of ISO 3601 specifies dimensions and tolerances for five types of anti-extrusion rings, which are also known as
18、 back-up rings: a) spiral type (T1); b) angle cut type (T2); c) solid type (T3); d) angle cut concave type (T4); e) solid concave type (T5). These anti-extrusion rings are for use with selected O-ring sizes as specified in ISO 3601-1 and the relevant housing dimensions specified in ISO 3601-2. 2 Nor
19、mative 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 3601-11), Fluid power syste
20、ms O-rings Part 1: Inside diameters, cross-sections, tolerances and designation codes ISO 3601-2:2008, Fluid power systems O-rings Part 2: Housing dimensions for general applications ISO 5598, Fluid power systems and components Vocabulary 3 Terms and definitions For the purposes of this document, th
21、e terms and definitions given in ISO 5598 apply. 1) To be published. (Revision of ISO 3601-1:2002) ISO 3601-4:2008(E) 2 ISO 2008 All rights reserved 4 Symbols The following letter symbols are used in this part of ISO 3601: b1 width of O-ring housing without anti-extrusion ring b2 width of O-ring hou
22、sing with one anti-extrusion ring b3 width of O-ring housing with two anti-extrusion rings b5 width of single anti-extrusion ring, angle cut types T2 and T4, and solid types T3 and T5 b6 width of anti-extrusion ring, spiral type T1 b7 total width (b5 + h) at apex of single anti-extrusion ring, angle
23、 cut concave type T4 and solid concave type T5 d2 O-ring cross-section diameter d3 housing diameter for piston seal housings d4 bore diameter for piston application d5 rod diameter d6 housing diameter for rod seal housings d9 piston diameter d10 bore diameter for rod application d14 internal diamete
24、r of anti-extrusion ring (spiral type T1 only) d15 external diameter of anti-extrusion ring (spiral type T1 only) d16 inside diameter of anti-extrusion ring (angle cut types T2 and T4, or solid types T3 and T5) d17 outside diameter of anti-extrusion ring (angle cut types T2 and T4, or solid types T3
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