DIN ISO 3601-4-2010 Fluid power systems - O-rings - Part 4 Anti-extrusion rings (back-up rings) (ISO 3601-4 2008)《液压动力系统 O型环 第4部分 反式挤压环(支撑环)(ISO 3601-4-2008)》.pdf
《DIN ISO 3601-4-2010 Fluid power systems - O-rings - Part 4 Anti-extrusion rings (back-up rings) (ISO 3601-4 2008)《液压动力系统 O型环 第4部分 反式挤压环(支撑环)(ISO 3601-4-2008)》.pdf》由会员分享,可在线阅读,更多相关《DIN ISO 3601-4-2010 Fluid power systems - O-rings - Part 4 Anti-extrusion rings (back-up rings) (ISO 3601-4 2008)《液压动力系统 O型环 第4部分 反式挤压环(支撑环)(ISO 3601-4-2008)》.pdf(15页珍藏版)》请在麦多课文档分享上搜索。
1、August 2010 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 23.100.60!$jB7“1713120www.din.deDDIN ISO 3601-4Fluid power systems O-rings Part 4: Anti-extrusion rings (back-up rings) (ISO 3601-4:2008)English translation of DIN ISO 3601-4:2010-08Fluidtechnik O-Ringe Teil 4: Sttzringe (ISO 3601-4:2008)Englische bersetzung von DIN ISO 3601-4:2010-08Transmissions
3、hydrauliques et pneumatiques Joints toriques Partie 4: Bagues anti-extrusion (ISO 3601-4:2008)Traduction anglaise de DIN ISO 3601-4:2010-08www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 15 pages08.10 DIN ISO 3601-4:2010-08 A comma is u
4、sed as the decimal marker. Contents Page National foreword .3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions5 4 Symbols 6 5 General requirements related to O-ring housings6 6 Types of anti-extrusion (back-up) rings 7 6.1 Spiral type, T1 7 6.2 Angle cut type, T2 9 6.3 Soli
5、d type, T39 6.4 Angle cut concave type, T4.10 6.5 Solid concave type, T5 11 7 Positioning of anti-extrusion rings in housings.12 8 Anti-extrusion ring designation code and materials12 8.1 Designation code.12 8.2 Materials .13 9 Dimensions and tolerances 13 9.1 Axial and radial widths of anti-extrusi
6、on rings.13 9.2 Outside diameters of anti-extrusion rings for piston sealing applications .14 9.3 Inside diameters of anti-extrusion rings for rod sealing applications .15 10 Identification statement (reference to this part of ISO 3601)15 2 Start of validity This standard takes effect on 1 August 20
7、10. National foreword This standard has been prepared by Technical Committee ISO/TC 131 “Fluid power systems”, Subcommittee SC 7 “Sealing devices”, Working Group WG 3 “Fluid power systems and components Sealing devices The responsible German body involved in its preparation was the Normenausschuss M
8、aschinenbau (Mechanical Engineering Standards Committee), Working Committee NA 060-36-73 AA O-Ringe of section Fluidtechnik. International Standards referred to in this standard have been published as the corresponding DIN ISO or DIN EN ISO Standards with the same number. For ISO 5598, there is no n
9、ational standard available. 3 DIN ISO 3601-4:2010-08 Design criteria for standard O-ring applications”. Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. Where high pressures are encountered, it is reco
10、mmended 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 rod and housing). Fluid power systems O-Rings Part 4: Anti-extrusion rings (back-up rings) 4 DIN ISO 3601-4:2010-08
11、1 Scope This part of ISO 3601 specifies dimensions and tolerances for five types of anti-extrusion rings, which are also known as 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
12、 for use with selected O-ring sizes as specified in ISO 3601-1 and the relevant housing dimensions specified in ISO 3601-2. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For unda
13、ted references, the latest edition of the referenced document (including any amendments) applies. ISO 3601-11), Fluid power systems 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 a
14、pplications ISO 5598, Fluid power systems and components Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 apply. 1) To be published. (Revision of ISO 3601-1:2002) 5 DIN ISO 3601-4:2010-08 4 Symbols The following letter symbols are used
15、 in this part of ISO 3601: b1width of O-ring housing without anti-extrusion ring b2width of O-ring housing with one anti-extrusion ring b3width of O-ring housing with two anti-extrusion rings b5width of single anti-extrusion ring, angle cut types T2 and T4, and solid types T3 and T5 b6width of anti-
16、extrusion ring, spiral type T1 b7total width (b5+ h) at apex of single anti-extrusion ring, angle cut concave type T4 and solid concave type T5 d2O-ring cross-section diameter d3housing diameter for piston seal housings d4bore diameter for piston application d5rod diameter d6housing diameter for rod
17、 seal housings d9piston diameter d10bore diameter for rod application d14internal diameter of anti-extrusion ring (spiral type T1 only) d15external diameter of anti-extrusion ring (spiral type T1 only) d16inside diameter of anti-extrusion ring (angle cut types T2 and T4, or solid types T3 and T5) d1
18、7outside diameter of anti-extrusion ring (angle cut types T2 and T4, or solid types T3 and T5) h extension of concave anti-extrusion ring beyond b5base width l gap of anti-extrusion ring, spiral type T1, on mandrel diameter d14R radius of cavity in concave anti-extrusion ring t radial section of ant
19、i-extrusion ring 5 General requirements related to O-ring housings For general requirements of O-ring housings, such as surface roughness, corners and edges of undefined shape, lead-in chamfers, housing diameter tolerances and housing widths, see the related clauses in ISO 3601-2. 6 DIN ISO 3601-4:2
20、010-08 6 Types of anti-extrusion (back-up) rings 6.1 Spiral type, T1 6.1.1 The spiral type, T1, anti-extrusion ring (see Figure 1) is typically associated with applications in which the system pressure is between 10 MPa (100 bar) and 20 MPa (200 bar). Continuous rings, such as the angle cut type (T2
21、) or the solid type (T3), are preferred for use at pressures higher than 20 MPa (200 bar), but assembly problems can be encountered with closed housings or at small diameters. aThis angle may be increased to 45 5 when d14is less than 7,0 mm. NOTE Direction of the spiral is optional. Figure 1 Spiral
22、type (T1) anti-extrusion ring 6.1.2 At higher temperatures, typically in excess of 100 C, anti-extrusion rings can be necessary even when pressures are less than 10 MPa (100 bar). Independent of temperature and pressure, special operating conditions can also require the use of anti-extrusion rings.
23、These operating conditions should be discussed with the seal supplier at the design stage. 7 DIN ISO 3601-4:2010-08 6.1.3 Dimensions shall conform to the requirements given in Table 1. Table 1 Dimensions of gap, l, of spiral type (T1) anti-extrusion rings in relation to mandrel diameter, d14Dimensio
24、ns in millimetresO-ring nominal cross-section d2Mandrel diameter d14Gap l d14u 10 1,2 0,4 10 60 3 1,5 d14u 20 1,2 0,4 20 170 4,4 2 d14u 19 1,2 0,4 19 393 6,4 2 d14u 26 1,8 0,6 26 280 6,4 2 6,99 d14 100 6,4 2 8 DIN ISO 3601-4:2010-08 6.2 Angle cut type, T2 The angle cut type, T2, anti-extrusion ring
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