1、 Reference numberISO 6149-4:2006(E)ISO 2006INTERNATIONAL STANDARD ISO6149-4First edition2006-05-15Connections for fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 4: Dimensions, design, test methods and requirements for external hex and internal hex
2、 port plugs Raccordements pour transmissions hydrauliques et applications gnrales Orifices et lments mles filetage mtrique ISO 261 et joint torique Partie 4: Dimensions, conception, mthodes dessai et exigences des bouchons dorifice six pans externes et six pans internes ISO 6149-4:2006(E) PDF discla
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6、hts 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 member body in the country of th
7、e 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 2006 All rights reservedISO 6149-4:2006(E) ISO 2006 All rights reserved iiiContents Page Foreword iv Introduction v
8、 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Dimensions 2 4.1 Plug dimensions . 2 4.2 Hex tolerances 2 4.3 Screw threads . 2 5 Requirements 2 5.1 Working pressures and working temperatures . 2 5.2 Performance 3 6 O-rings . 3 7 Test methods. 3 8 Designation of port plugs 3 9 I
9、dentification 4 10 Manufacture. 4 10.1 Construction 4 10.2 Workmanship 4 10.3 Finish 4 11 Procurement information. 4 12 Marking 4 13 Identification statement (reference to this part of ISO 6149). 5 ISO 6149-4:2006(E) iv ISO 2006 All rights reservedForeword ISO (the International Organization for Sta
10、ndardization) 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. Each member body interested in a subject for which a technical committee has been established has the righ
11、t 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 (IEC) on all matters of electrotechnical standardization. International
12、Standards are drafted 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
13、 International Standard 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 6
14、149-4 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 4, Connectors and similar products and components. ISO 6149 consists of the following parts, under the general title Connections for fluid power and general use Ports and stud ends with ISO 261 metric threads
15、and O-ring sealing: Part 1: Ports with truncated housing for O-ring seal Part 2: Dimensions, design, test methods and requirements for heavy-duty (S series) stud ends Part 3: Dimensions, design, test methods and requirements for light-duty (L series) stud ends Part 4: Dimensions, design, test method
16、s and requirements for external hex and internal hex port plugs ISO 6149-4:2006(E) ISO 2006 All rights reserved vIntroduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. In general applications, a fluid can be
17、 conveyed under pressure. Components are connected through their threaded ports by stud ends on fluid conductor connectors to tubes and pipes or to hose fittings and hoses. Fluid ports are closed by inserting a plug in the port. INTERNATIONAL STANDARD ISO 6149-4:2006(E) ISO 2006 All rights reserved
18、1Connections for fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 4: Dimensions, design, test methods and requirements for external hex and internal hex port plugs 1 Scope This part of ISO 6149 specifies dimensions and performance requirements for e
19、xternal hex and internal hex port plugs for use with ISO 6149-1 ports. Port plugs in accordance with this part of ISO 6149 can be used at working pressures up to 63 MPa (630 bar1). The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, et
20、c. Conformance to the dimensional information in this part of ISO 6149 does not guarantee rated performance. It is necessary that each manufacturer perform testing according to the specification contained in this part of ISO 6149 to assure that components comply with the performance ratings. 2 Norma
21、tive 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 48, Rubber, vulcanized or the
22、rmoplastic Determination of hardness (hardness between 10 IRHD and 100 IHRD) ISO 261:1998, ISO general-purpose metric screw threads General plan ISO 1629, Rubber and latices Nomenclature ISO 3601-3:2005, Fluid power systems O-rings Part 3: Quality acceptance criteria ISO 4042, Fasteners Electroplate
23、d coatings ISO 4759-1:2000, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 55982), Fluid power systems and components Vocabulary ISO 6149-1, Connections for fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Pa
24、rt 1: Ports with truncated housing for O-ring seal 1) 1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. 2) To be published. (Revision of ISO 5598:1985) ISO 6149-4:2006(E) 2 ISO 2006 All rights reservedISO 6149-2, Connections for fluid power and general use Ports and stud ends with ISO 261 metric threads and
25、 O-ring sealing Part 2: Dimensions, design, test methods and requirements for heavy-duty (S series) stud ends ISO 7789, Hydraulic fluid power Two-, three- and four-port screw-in cartridge valves Cavities ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests ISO 10683, Fasteners Non-el
26、ectrolytically applied zinc flake coatings ISO 19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections 3 Terms and definitions For the purpose of this document, the terms and definitions given in ISO 5598 and the following apply. 3.1 plug s
27、tud end with no through hole for fluid passage, used to contain hydraulic fluid. 4 Dimensions 4.1 Plug dimensions External hex and internal hex plugs shall conform to the dimensions shown in Figures 1 and 2 and given in Tables 1 and 2, respectively. 4.2 Hex tolerances External hex tolerances across
28、flats shall be in accordance with ISO 4759-1:2000, product grade C. Minimum across corner dimensions are 1,092 times the nominal width across flats. The minimum side flat is 0,43 times the nominal width across flats. Internal hex tolerances across flats shall be in accordance with ISO 4759-1:2000, p
29、roduct grade A. External hex corners shall be chamfered 10 to 30 to a diameter equal to the width across flats, with a tolerance of 00,4mm. 4.3 Screw threads The screw threads on the plug shall be metric screw threads conforming to ISO 261:1998, class 6g. 5 Requirements 5.1 Working pressures and wor
30、king temperatures External hex and internal hex plugs conforming to this part of ISO 6149 shall be suitable for use at the working pressures given in Table 3 when used at temperatures between 40 C and +120 C. For use at pressures and/or temperatures outside of this range, the manufacturer shall be c
31、onsulted. Plugs conforming to this part of ISO 6149 may contain elastomeric seals. Unless otherwise specified, plugs are made and delivered with elastomeric seals for use within the specified working temperature range with petroleum-based hydraulic fluids. The use of these plugs and elastomeric seal
32、s with other hydraulic fluids can result in a reduced working temperature range or can render the plugs unsuitable for the application. Manufacturers may supply, upon request, plugs with elastomeric seals for use with hydraulic fluids other than petroleum-based hydraulic fluids that meet the specifi
33、ed working temperature range of the plugs. ISO 6149-4:2006(E) ISO 2006 All rights reserved 35.2 Performance External hex and internal hex plugs conforming to this part of ISO 6149 shall meet the burst and impulse pressures given in Table 3, and shall be capable of withstanding a vacuum of 6,5 kPa (0
34、,065 bar) absolute pressure when tested in accordance with Clause 7. 6 O-rings Unless otherwise specified, for use at the pressure and temperature requirements in 5.1 and Table 3 and for testing, the O-rings shall be made of NBR (nitrile) with a hardness of (90 5) IRHD, measured in accordance with I
35、SO 48, conform to the dimensions shown in Figure 3 and given in Table 4, and meet or exceed the O-ring quality acceptance criteria for grade N of ISO 3601-3:2005. Tolerances on O-ring dimensions shall be in accordance with ISO 6149-2. 7 Test methods Port plug tests shall be conducted in accordance w
36、ith ISO 19879 for burst, cyclic endurance (impulse) and vacuum. The qualification test torques given in Table 5 shall be used in testing. Test results shall be reported on the test data form in ISO 19879. 8 Designation of port plugs Port plugs shall be designated by an alphanumeric code to facilitat
37、e ordering. They shall be designated by the word “Plug”, then a space, followed by ISO 6149-4, then a hyphen, followed by the shape code PLEH for external hex or PLIH for internal hex, followed a hyphen, followed by the plug size, followed by the O-ring code NBR for plugs delivered with an O-ring th
38、at conforms to the requirements of Clause 6. If desired, the code may be supplemented by a hyphen followed by the plating code in accordance with ISO 4042 or ISO 10683, followed by hyphen, followed by the O-ring material code in accordance with ISO 1629. EXAMPLE 1 Plug with an external hex for an IS
39、O 6149-1 port size M12 1,5 shall be designated as follows: Plug ISO 6149-4-PLEH-M12 EXAMPLE 2 Plug with an external hex for an ISO 6149-1 port size M12 1,5, ordered assembled with an O-ring that conforms to the requirements of Clause 6 shall be designated as follows: Plug ISO 6149-4-PLEH-M12-NBR EXA
40、MPLE 3 Plug with an external hex for an ISO 6149-1 port size M12 1,5, ordered assembled with an O-ring that conforms to the requirements of Clause 6 but made of FKM instead of NBR shall be designated as follows: Plug ISO 6149-4-PLEH-M12-FKM EXAMPLE 4 Plug with an external hex for an ISO 6149-1 port
41、size M12 1,5, ordered galvanized zinc coated in accordance with ISO 4042 and assembled with an O-ring that conforms to the requirements of Clause 6 but made of FKM instead of NBR shall be designated as follows: Plug ISO 6149-4-PLEH-M12-A3C-FKM ISO 6149-4:2006(E) 4 ISO 2006 All rights reserved9 Ident
42、ification External hex plugs shall be identified in accordance with the identification required for non-adjustable stud ends in ISO 6149-2. Internal hex plugs shall be identified as shown in Figure 2. 10 Manufacture 10.1 Construction Plugs may be made from low-carbon steel by forging, cold forming o
43、r machined from bar stock, unless otherwise recommended. 10.2 Workmanship Workmanship shall conform to the best commercial practice to produce high quality plugs. Plugs shall be free from visual contaminants, all hanging burrs, loose scale and slivers that can be dislodged in use, and any other defe
44、cts that can affect the function of the parts. Unless otherwise specified, surface finish on all surfaces shall be Ra u 6,3 m. 10.3 Finish The external surface and threads of all carbon steel parts shall be plated or coated with a suitable material that passes a 72 h neutral salt spray test in accor
45、dance with ISO 9227, unless otherwise agreed upon by the manufacturer and the user. Any appearance of red rust during the salt spray test on any area, except those noted below, shall be considered failure: edges, such as hex points, serrations and crests of threads, where there can be mechanical def
46、ormation of the plating or coating typical of mass-produced parts or shipping effects; areas where there is mechanical deformation of the plating or coating caused by crimping, flaring, bending and other post-plate metal forming operations; areas where the parts are suspended or affixed in the test
47、chamber where condensate can accumulate. Internal fluid passages shall be protected from corrosion during storage. Cadmium plating is not allowed due to environmental concerns. Parts manufactured to this part of ISO 6149 shall not be cadmium plated. Changes in plating can affect assembly torques and
48、 require requalification, when applicable. 11 Procurement information The purchaser should supply a description of the plug using the designation in accordance with Clause 8 when making an inquiry or placing an order. Deviations from the requirements of this part of ISO 6149, such as materials, pres
49、sures and temperatures, shall be agreed upon by the supplier and the purchaser. 12 Marking Port plugs shall be permanently marked with the manufacturers name or trademark. ISO 6149-4:2006(E) ISO 2006 All rights reserved 513 Identification statement (reference to this part of ISO 6149) It is strongly recommended to manufacturers who have chosen to conform to this part of ISO 6149 that they use the following statement in test reports, catalogues and
