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1、BRITISH STANDARD BS ISO 12151-4:2007 Connections for hydraulic fluid power and general use Hose fittings Part 4: Hose fittings with ISO 6149 metric stud ends ICS 23.040.70; 23.100.40 ? Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Unco
2、ntrolled Copy, (c) BSI BS ISO 12151-4:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007 ISBN 978 0 580 55706 4 National foreword This British Standard is the UK implementation of ISO 12151-4:2007. The UK participati
3、on in its preparation was entrusted by Technical Committee MCE/18, Fluid power systems and components, to Panel MCE/18/-/4, Connectors and associated components. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to in
4、clude all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South B
5、ank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 12151-4:2007(E) INTERNATIONAL STANDARD ISO 12151-4 First edition 2007-07-15 Connections for hydraulic fluid power and general use Hose fittings Part 4: Hose fittings with ISO 6149 metric stud ends Rac
6、cordements pour transmissions hydrauliques et applications gnrales Flexibles de raccordement Partie 4: Flexibles avec lments mles mtriques conformes lISO 6149 BS ISO 12151-4:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontroll
7、ed Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Performance requirements 2 5 D
8、esignation of hose fittings 2 6 Design 3 7 Manufacture. 3 8 Procurement information. 4 9 Marking 4 10 Assembly. 4 11 Identification statement (reference to this part of ISO 12151). 5 Annex A (informative) Instructions for assembling hose fittings in ISO 6149-1 straight thread O-ring port . 7 Bibliog
9、raphy. 9 BS ISO 12151-4:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO memb
10、er 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 represented on that committee. International organizations, government
11、al 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 drafted in accordance with the rules given in the ISO/IEC Direct
12、ives, 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 Standard requires approval by at least 75 % of the member bodie
13、s 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 12151-4 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Su
14、bcommittee SC 4, Connectors and similar products and components. ISO 12151 consists of the following parts, under the general title Connections for hydraulic fluid power and general use Hose fittings: Part 1: Hose fittings with ISO 8434-3 O-ring face seal ends Part 2: Hose fittings with ISO 8434-1 a
15、nd 8434-4 24 cone connector ends with O-rings Part 3: Hose fittings with ISO 6162-1 or ISO 6162-2 flange ends Part 4: Hose fittings with ISO 6149 metric stud ends Part 5: Hose fittings with ISO 8434-2 37 flared ends Part 6: Hose fittings with ISO 8434-6 60 cone ends BS ISO 12151-4:2007 Licensed Copy
16、: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI v Introduction In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. In general applications, the f
17、luid can be conveyed under pressure. Components are connected through their ports by stud ends on fluid conductor connectors to tubes and pipes or to hose fittings and hoses. BS ISO 12151-4:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00
18、2007, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Connections for hydraulic fluid power and general use Hose fittings Part 4: Hose fittings with ISO 6149 metric stud ends
19、1 Scope This part of ISO 12151 specifies the general and dimensional requirements for the design and performance of ISO 6149 metric stud-end hose fittings made of carbon steel, for nominal hose inside diameters of 6,3 mm through 38 mm inclusive, in accordance with ISO 4397. NOTE 1 Other materials ca
20、n be supplied as agreed between the manufacturer and user. NOTE 2 Method of attachment of fitting to hose is optional, for example, permanent, field-attachable, push-on, beaded, etc. Also included is a 90 elbow hose fitting suitable for hose connections made with or without hose clamps in relatively
21、 low-pressure applications. NOTE 3 See ISO 4038 and ISO 4039 for hose fittings used in hydraulic and pneumatic braking systems on road vehicles (as defined in the scope of ISO/TC 22). These hose fittings (see Figure 1 for a typical example) are for use in hydraulic fluid power systems with hose that
22、 meets the requirements of the respective hose standards and in general applications with suitable hoses. 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, th
23、e latest edition of the referenced document (including any amendments) applies. ISO 261, ISO general purpose metric screw threads General plan ISO 4397, Fluid power systems and components Connectors and associated components Nominal outside diameters of tubes and nominal inside diameters of hoses IS
24、O 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 6149-2, Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 2:
25、 Dimensions, design, test methods and requirements for heavy-duty (S series) stud ends ISO 6149-3, Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 3: Dimensions, design, test methods and requirements for light-duty (L seri
26、es) stud ends ISO 6605, Hydraulic fluid power Hoses and hose assemblies Test methods ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests ISO 19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections BS ISO 12151-4:2007 Licens
27、ed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 apply. 4 Performance requirements Hose assemblies shall meet th
28、e performance requirements specified in the appropriate hose specification without leakage or failure when tested in accordance with ISO 6605. The working pressure of the hose assembly shall be the lower of the pressures for that size given in ISO 6149-2 or ISO 6149-3 for the end connection or in th
29、e relevant hose specification. The working pressure of the hose fitting shall be verified through testing conducted in accordance with ISO 19879, but the entire hose assembly shall be tested in accordance with ISO 6605. During the cyclic endurance test, the hose fitting shall be subjected to the num
30、ber of cycles specified in the relevant hose specification. 5 Designation of hose fittings 5.1 Hose fittings shall be designated by an alphanumeric code to facilitate ordering. They shall be designated by the words “Hose fitting”, followed by “ISO 12151-4”, followed by a spaced hyphen, then the conn
31、ection-end type and shape letter symbols, followed by another spaced hyphen and the stud-end series letter, and the stud-end thread size in accordance with ISO 6149-2 or ISO 6149-3 and the hose size (nominal hose inside diameter in accordance with ISO 4397), each separated by a multiplication symbol
32、 (). EXAMPLE A 90 elbow hose fitting with a M18 1,5 mm thread stud end in accordance with ISO 6149-3 and 12,5 mm nominal ID hose is designated as follows: Hose fitting ISO 12151-4 - SDE - LM18 12,5 5.2 The following letter symbols shall be used: Connection- end type Symbol Stud SD Shape Symbol Strai
33、ght S 90 elbow E Series Symbol ISO 6149-2 S ISO 6149-3 L BS ISO 12151-4:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 6 Design 6.1 Figure 1 shows a typical example of a hose fitting with ISO 6149-2 and
34、 ISO 6149-3 metric stud end. Key 1 ISO 6149-1 port 2 Hose fitting 3 Stud end with O-ring seal in accordance with ISO 6149-2 or ISO 6149-3 Figure 1 Typical example of hose fitting connection with metric stud end 6.2 Hose fitting dimensions shown in Figures 2 and 3 shall conform to those given in Tabl
35、es 1 and 2 and to the relevant dimensions given in ISO 6149-2 or ISO 6149-3. 6.3 Hex tolerances across flats shall be in accordance with ISO 4759-1:2000, product grade C. 6.4 The angular tolerance on axis of ends of elbows shall be 3 for all sizes. 6.5 Details of contour shall be as chosen by the ma
36、nufacturer, provided the dimensions given in Tables 1 and 2 are maintained. 6.6 The screw threads on the connection stud ends of the hose fittings shall be metric screw threads in accordance with ISO 261. 7 Manufacture 7.1 Construction Hose fittings may be forged, cold-formed, machined from barstock
37、 or manufactured from multiple components. 7.2 Workmanship Workmanship shall conform to the best commercial practice to produce high quality hose fittings. Hose fittings shall be free from visual contaminants, all hanging burrs, loose scale and slivers that can be dislodged in use and any other defe
38、cts that might affect the function of the parts. All machined surfaces shall have a surface roughness value, Ramax, of 6,3 m, except where otherwise specified. BS ISO 12151-4:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Aug 18 09:41:10 GMT+00:00 2007, Uncontrol
39、led Copy, (c) BSI 4 7.3 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 accordance with ISO 9227, unless otherwise agreed upon by the manufacturer and the user. Any appearance of red ru
40、st during the salt spray test on any area, except those noted below, shall render that part a failure: all internal fluid passages; edges, such as hex points, serrations and crests of threads where there can be mechanical deformation of the plating or coating typical of mass-produced parts or shippi
41、ng 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 chamber where condensate can accumulate. Internal fluid passages shall be p
42、rotected from corrosion during storage. NOTE Cadmium plating is not preferred due to environmental concerns. Changes in plating can affect assembly torques and require requalification, when applicable. 7.4 Protection By a method agreed upon between manufacturer and purchaser, the face of the hose fi
43、ttings shall be protected by the manufacturer from nicks and scratches that would be detrimental to the function of the hose fitting. Passages shall be securely covered to prevent contamination by dirt or other polluants. 8 Procurement information The following information should be supplied by the
44、purchaser when making an inquiry or placing an order: description of hose fitting (using designation in accordance with Clause 5); material of hose fitting (if other than carbon steel); hose type and size; fluid to be conveyed; working pressure; working temperatures (both ambient and fluid). 9 Marki
45、ng Hose fittings shall be permanently marked with the manufacturers name or trademark. 10 Assembly Annex A provides guidance on the assembly of hose fittings that conform to this part of ISO 12151. BS ISO 12151-4:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Aug
46、 18 09:41:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 11 Identification statement (reference to this part of ISO 12151) It is strongly recommended to manufacturers who have chosen to conform to this part of ISO 12151 that the following statement be used in test reports, catalogues and sales lite
47、rature: “Metric stud-end hose fittings produced in accordance with ISO 12151-4:2007, Connections for hydraulic fluid power and general use Hose fittings Part 4: Hose fittings with ISO 6149 metric stud ends.” NOTE 1 Connection details in accordance with ISO 6149-2 or ISO 6149-3. NOTE 2 Method of atta
48、chment of fitting to hose is optional. a Across flats. Figure 2 Straight stud hose fitting (SDS) Table 1 Dimensions of straight stud hose fittings (SDS) Dimensions in millimetres d3 b max. Hose fitting size Thread Hose size d1 d2 a min. S series L series L1 min. L2 c max. s1 hex M12 6,3 M12 1,5 6,3
49、3 4,18 6,18 9 61,5 17 M14 8 M14 1,5 8 5 6,18 7,68 10 67,5 19 M16 10 M16 1,5 10 6 7,22 9,22 11 73 22 M18 12,5 M18 1,5 12,5 8 9,22 11,22 12 82,5 24 M22 16 M22 1,5 16 11 12,27 14,27 13 90 27 M27 19 M27 2 19 14 15,27 18,27 15 98,5 32 M33 25 M33 2 25 19 20,33 23,33 18 106 41 M42 31,5 M42 2 31,5 25 26,33 30,33 20 128,5 50 M48 38 M48 2 38 31 32,39 36,39 21 161 55 a Minimum diamet