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1、 Reference number ISO 1179-2:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 1179-2 First edition 2007-08-15 Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 2: Heavy-duty (S series) and light-duty (L series) stud ends
2、 with elastomeric sealing (type E) Raccordements pour applications gnrales et transmissions hydrauliques et pneumatiques Orifices et lments mles filetage ISO 228-1 et joint en lastomre ou tanchit mtal sur mtal Partie 2: lments mles de sries lgre (srie L) et lourde (srie S) avec joint en lastomre (ty
3、pe E) ISO 1179-2:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. I
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6、dress given below. 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 I
7、SO at the address 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 ISO 1179-2:2007(E) ISO 200
8、7 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Dimensions 2 5 Requirements 2 6 Elastomeric seals 2 7 Test methods. 2 8 Designation of stud ends. 4 9 Identification statement (reference to this part of ISO 1179). 4
9、 Annex A (normative) Test data form for ISO 1179-1 port and ISO 1179-2 stud ends 9 Bibliography. 10 -,-,- ISO 1179-2:2007(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). T
10、he 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 represented on that committee. International organizations, governmental and non-go
11、vernmental, 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 drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
12、 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 Standard requires approval by at least 75 % of the member bodies casting a v
13、ote. 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 1179-2 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC
14、4, Connectors and similar products and components. This first edition of ISO 1179-2, together with ISO 1179-1, ISO 1179-3 and ISO 1179-4, cancels and replaces ISO 1179:1981 which has been technically revised. ISO 1179 consists of the following parts, under the general title Connections for general u
15、se and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing: Part 1: Threaded ports Part 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E) Part 3: Light-duty (L series) stud ends with sealing by O-ring with ret
16、aining ring (types G and H) Part 4: Stud ends for general use only with metal-to-metal sealing (type B) -,-,- ISO 1179-2:2007(E) ISO 2007 All rights reserved v Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within a circuit. In
17、 general applications, a fluid may be conveyed under pressure. Components are connected through their threaded ports by fluid conductor connectors to tubes and pipes or to hose fittings and hoses. For threaded ports and stud ends specified in new designs in hydraulic fluid power applications, ISO/TC
18、 131/SC 4 recommends that the ISO 6149 series be used because these International Standards specify ports and stud ends with metric threads and O-ring sealing and because the sub-committee would like to help users by recommending one preferred system. ISO/TC 131/SC 4 further recommends that threaded
19、 ports and stud ends in accordance with the ISO 1179 series, ISO 9974 series and ISO 11926 series not be used for new designs in hydraulic fluid power applications; these International Standards will be maintained because they specify ports and stud ends that are currently used in hydraulic systems
20、worldwide. For threaded ports and stud ends specified in new designs in pneumatic fluid power applications, ISO/TC 131/SC 4 recommends that ISO 16030 be used, except where products are to interface with ISO 7-1 threads, because the sub-committee would like to help users by recommending one preferred
21、 system. ISO/TC 131/SC 4 further recommends that threaded ports and stud ends in accordance with the ISO 1179 series not be used for new designs in pneumatic fluid power applications; these International Standards will be maintained because they specify ports and stud ends that are currently used in
22、 pneumatic systems worldwide. Significant testing over more than 30 years of use has confirmed the performance requirements of connection ends made from carbon steel. The stud end connections specified in ISO 1179 parts 2, 3 and 4 apply to connectors detailed in ISO 8434 parts 1, 2 and 4. INTERNATIO
23、NAL STANDARD ISO 1179-2:2007(E) ISO 2007 All rights reserved 1 Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E) 1 Scope
24、 This part of ISO 1179 specifies dimensions, performance requirements and test procedures for heavy-duty (S series) and light-duty (L series) stud ends with ISO 228-1 threads and the elastomeric sealing (type E) that is used with them. Heavy-duty (S series) stud ends with type E sealing in accordanc
25、e with this part of ISO 1179 may be used at working pressures up to 63 MPa (630 bar). Light-duty (L series) stud ends with type E sealing in accordance with this part of ISO 1179 may be used at working pressures up to 25 MPa (250 bar). The permissible working pressure depends upon size, materials, d
26、esign, working conditions, application, etc. Conformance to the dimensional information in this part of ISO 1179 does not guarantee rated performance. Each manufacturer shall perform testing according to the specification contained in this part of ISO 1179 to assure that components made to this part
27、 of ISO 1179 comply with the performance ratings. NOTE 1 This part of ISO 1179 applies to connectors detailed in ISO 8434-1 and ISO 8434-2. NOTE 2 The introduction of this part of ISO 1179 gives recommendations for ports and stud ends to be used for new designs in hydraulic and pneumatic fluid power
28、 applications. 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 228-1,
29、Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation ISO 4759-1:2000, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 5598, Fluid power systems and components Vocabulary ISO 9974-2, Connection
30、s for general use and fluid power Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing Part 2: Stud ends with elastomeric sealing (type E) ISO 19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections -,-,- ISO
31、1179-2:2007(E) 2 ISO 2007 All rights reserved 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 apply. 4 Dimensions Heavy-duty (S series) and light-duty (L series) stud ends shall conform to the dimensions given in Figure 1 and Table 2. Hexagonal
32、tolerances across flats shall be in accordance with ISO 4759-1:2000, product grade C. 5 Requirements 5.1 Working pressure Heavy-duty (S series) and light-duty (L series) stud ends made of low carbon steel shall be designed for use at the working pressures given in Table 3. 5.2 Performance Heavy-duty
33、 (S series) and light-duty (L series) stud ends made of low carbon steel shall meet or exceed the relevant burst and impulse pressures given in Table 3, when tested in accordance with Clause 7 and assembled using the torques listed in Table 5. 6 Elastomeric seals Elastomeric seals for use with both
34、heavy-duty (S series) and light-duty (L series) stud ends shall conform to the dimensions given in Figure 2 and Table 4. Figure 3 shows the correct assembly of the stud end and elastomeric seal. 7 Test methods 7.1 Burst pressure test (failure pressure test) 7.1.1 Principle Three samples shall be tes
35、ted to confirm that heavy-duty (S series) and light-duty (L series) stud ends meet or exceed a ratio of 4:1 between the burst and working pressures without failure. 7.1.2 Materials 7.1.2.1 Test block and stud ends Test blocks shall be in accordance with the requirements specified in ISO 19879. Stud
36、ends shall be made from low carbon steel and be plated. 7.1.2.2 Test seals Unless otherwise specified, test seals shall meet the requirements specified in ISO 19879. Test seals shall conform to the dimensions given in Table 4. -,-,- ISO 1179-2:2007(E) ISO 2007 All rights reserved 3 7.1.3 Procedures
37、7.1.3.1 Thread lubrication For testing only, threads and contact surfaces shall be lubricated in accordance with the requirements of ISO 19879. 7.1.3.2 Stud end torque Stud ends shall be tested after application of the torques given in Table 5. 7.1.3.3 Pressure rise rate The rate of pressure rise sh
38、all be in accordance with the requirements of ISO 19879. 7.2 Cyclic endurance (impulse) test 7.2.1 Principle Six samples, when tested at their respective impulse pressures, shall pass a cyclic endurance test of 1 000 000 cycles without leakage or component failure. 7.2.2 Materials Use the same mater
39、ials as specified in 7.1.2. 7.2.3 Procedures 7.2.3.1 Thread lubrication Apply lubricant as specified in 7.1.3.1. 7.2.3.2 Stud end torque Apply torque as specified in 7.1.3.2. 7.2.3.3 Cycle and pressure rise rate The cycle rate shall be in accordance with the requirements of ISO 19879, except the rat
40、e of pressure rise shall be adjusted accordingly. 7.3 Test report Test results and conditions shall be reported on the test data form given in Annex A. 7.4 Re-use of components Parts used for cyclic endurance or burst test shall not be tested further, used or returned to stock. -,-,- ISO 1179-2:2007
41、(E) 4 ISO 2007 All rights reserved 8 Designation of stud ends 8.1 Stud ends shall be designated by: a) “Stud end”; b) reference to this part of ISO 1179, i.e. ISO 1179-2; c) thread size, followed; d) the letter symbol for the relevant series. EXAMPLE A heavy-duty (S series) stud end with a G 3/8 A t
42、hread in accordance with ISO 228-1 is designated as follows: Stud end ISO 1179-2 - G 3/8 A-S, 8.2 The elastomeric seal shall be designated in accordance with Table 1. Table 1 Designation of elastomeric seals for ISO 1179-2 stud ends Thread Designation G 1/8 A Elastomeric seal ISO 9974-2 M10 1 G 1/4
43、A Elastomeric seal ISO 9974-2 M14 1,5 G 3/8 A Elastomeric seal ISO 1179-2 G 3/8 A G 1/2 A Elastomeric seal ISO 1179-2 G 1/2 A G 3/4 A Elastomeric seal ISO 9974-2 M26 1,5 G 1 A Elastomeric seal ISO 9974-2 M33 2 G 1 1/4 A Elastomeric seal ISO 9974-2 M42 2 G 1 1/2 A Elastomeric seal ISO 9974-2 M48 2 9
44、Identification statement (reference to this part of ISO 1179) It is strongly recommended to manufacturers who have chosen to conform to this part of ISO 1179 that the following statement be used in test reports, catalogues and sales literature. “Heavy-duty (S series) or light-duty (L series) stud en
45、ds conform to ISO 1179-2, Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E).” ISO 1179-2:2007(E) ISO 2007 All rights res
46、erved 5 Dimensions in millimetres, surface roughness values in micrometres. Key 1 thread pitch diameter a Dimension across the flats. Figure 1 Heavy-duty (S series) and light-duty (L series) stud end with elastomeric sealing (type E) Table 2 Dimensions for heavy-duty (S series) and light-duty (L ser
47、ies) stud end with elastomeric sealing (type E) Dimensions in millimetres Thread d2 Maximum drill size d4 d5 L1 L2 L3 L4 R1 R2 s1 W d1 a d3 hex 0 0,2 L seriestol. S series tol. 0,1 0 + 0 0,2 0,2min. 0,3 0 +0,1 0 + 0,2 0,1 G 1/8 A 13,9 4 0,1 12 8,3 8 1,5 2 0,7 1 0,5 14 0,1 G 1/4 A 18,9 6 0,1 5 0,116,
48、6 11,2 12 2 3 1,2 1,2 0,5 19 0,1 G 3/8 A 21,9 9 0,2 8 0,219 14,7 12 2,5 3 1,2 1,2 0,6 22 0,1 G 1/2 A 26,9 14 0,2 12 0,224 18,4 14 3 4 1,2 1,2 0,6 27 0,1 G 3/4 A 31,9 18 0,2 16 0,229,3 23,8 16 3 4 1,2 1,2 0,6 32 0,2 G 1 A 39,9 23 0,2 20 0,236 29,6 18 3 5 1,6 1,6 0,8 41 0,2 G 1 1/4 A 49,9 30 0,2 25 0,246 38,6 20 3 5 1,6 1,6 0,8 50 0,2 G 1 1/2 A 54,9 36 0,3 32 0,351 44,5 22 3 5 1,6 1,6 0,8 55 0,2 a Size and dimensions in accordance with ISO 228-1. ISO 1179-2:2007(E) 6 ISO 2007 All rights res