1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Hose fittings Part 5: Hose fittings with ISO 8434-2 37 flared endsICS 23.040.70; 23.100.40Connectio
2、ns for hydraulic fluid power and general use BRITISH STANDARDBS ISO 12151-5:2007BS ISO 12151-5:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007ISBN 978 0 580 55707 1Amendments issued since publicationAmd. No. Date C
3、ommentscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard is the UK implementation of ISO 12151-5:2007. The UK participation in its preparation was entrusted by Technical
4、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 include all the necessary provisions of a Reference n
5、umberISO 12151-5:2007(E)INTERNATIONAL STANDARD ISO12151-5First edition2007-07-15Connections for hydraulic fluid power and general use Hose fittings Part 5: Hose fittings with ISO 8434-2 37 flared ends Raccordements pour transmissions hydrauliques et applications gnrales Flexibles de raccordement Par
6、tie 5: Flexibles avec embouts vass 37 conformes lISO 8434-2 BS ISO 12151-5:2007ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Performance requirements 2 5 Designation of hose fittings 2 6 Design 3 7 Manufacture. 3 8 Procurement info
7、rmation. 4 9 Marking 4 10 Identification statement (reference to this part of ISO 12151). 4 Annex A (informative) Application illustrations for short, medium and long elbows. 10 Bibliography . 11 BS ISO 12151-5:2007iv Foreword ISO (the International Organization for Standardization) is a worldwide f
8、ederation 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 represented on that co
9、mmittee. 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 drafted in accor
10、dance 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 Standard requir
11、es 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 12151-5 was prepared by Technic
12、al Committee ISO/TC 131, Fluid power systems, Subcommittee 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 s
13、eal ends Part 2: Hose fittings with ISO 8434-1 and 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-
14、6 60 cone ends BS ISO 12151-5:2007vIntroduction In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. In general applications, the fluid can be conveyed under pressure. Components are connected through their ports by stud en
15、ds on fluid conductor connectors to tubes and pipes or to hose fittings and hoses. BS ISO 12151-5:2007blank1Connections for hydraulic fluid power and general use Hose fittings Part 5: Hose fittings with ISO 8434-2 37 flared ends 1 Scope This part of ISO 12151 specifies the general and dimensional re
16、quirements for the design and performance of 37 flared hose fittings in accordance with ISO 8434-2, made of carbon steel, for nominal hose sizes of 6,3 mm through 51 mm inclusive in accordance with ISO 4397. NOTE 1 Other materials can be supplied as agreed between the manufacturer and user. NOTE 2 S
17、ee 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 meets the requirements of the respe
18、ctive hose standards and in general applications with suitable hose. 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 do
19、cument (including any amendments) applies. ISO 68-2, ISO general-purpose screw threads Basic profile Part 2: Inch screw threads ISO 263, ISO inch screw threads General plan and selection for screws, bolts and nuts Diameter range 0.06 to 6 in ISO 4397, Fluid power systems and components Connectors an
20、d associated components Nominal outside diameters of tubes and nominal inside diameters of hoses 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 6149-1, Connections for hydraulic flu
21、id power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 1: Ports with truncated housing for O-ring seal ISO 6605, Hydraulic fluid power Hoses and hose assemblies Test methods ISO 8434-2:1), Metallic tube connections for fluid power and general use Part 2: 37
22、flared connectors 1) To be published. Revision of ISO 8434-2:1994 BS ISO 12151-5:20072 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 connections3 Terms and definitions F
23、or the purposes of this document, the terms and definitions given in ISO 5598 apply. 4 Performance requirements Hose assemblies shall meet the performance requirements specified in the appropriate hose specification without leakage or failure when tested in accordance with ISO 6605. The working pres
24、sure of the hose assembly shall be the lower of the pressures for that size given in ISO 8434-2 for the end connection or in the 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 assembl
25、y shall be tested in accordance with ISO 6605. During the cyclic endurance test, the hose fitting shall be subjected to the number 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 orderi
26、ng. They shall be designated by the words “Hose fitting”, followed by “ISO 12151-5”, followed by a spaced hyphen, then the connection type and shape letter symbol, followed by another spaced hyphen, the 37 flared-end size (tube outside diameter in accordance with ISO 8434-2) and the hose size (nomin
27、al hose inside diameter in accordance with ISO 4397), each separated by a multiplication symbol (). EXAMPLE A female swivel 45 elbow for 12 mm OD tubing and 12,5 mm nominal ID hose, is designated as follows: Hose fitting ISO 12151-5 - SWE45 - 12 12,5 5.2 The following letter symbols shall be used: C
28、onnection end type Symbol Swivel SW Shape Symbol Straight S 45 elbow E45 90 elbow short ES 90 elbow medium EM 90 elbow long EL 5.3 Tube ends are assumed to be male type and thus do not need to be included in the code. However, if another type of end is involved, it shall be designated. BS ISO 12151-
29、5:200736 Design 6.1 Figure 1 shows a typical example of a hose fitting with 37 flared end. Key 1 hose fitting 2 nut 3 straight stud connector (ISO 8434-2) 4 port (ISO 6149-1) 5 O-ring seal Figure 1 Typical example of hose fitting connection with 37 flared end 6.2 Hose fitting dimensions shown in Fig
30、ures 2 through 5 shall conform to those given in Tables 1 through 4 and to the relevant dimensions given in ISO 8434-2. 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 Deta
31、ils of contour shall be as chosen by the manufacturer, provided that the dimensions given in Tables 1 through 4 are maintained. 6.6 The screw threads on the flare connection ends of the hose fittings shall be inch screw threads in accordance with ISO 263 and ISO 68-2. 7 Manufacture 7.1 Construction
32、Hose fittings may be forged, cold-formed, machined from barstock 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 s
33、cale and slivers that can be dislodged in use, and any other defects 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 12151-5:20074 7.3 Finish The external surface and threads of all car
34、bon 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 rust during the salt spray test on any area, except those noted below, shall
35、 render that part a failure: all internal fluid passages; edges, such as hex points, serrations and crests of threads where there may be mechanical deformation of the plating or coating typical of mass-produced parts or shipping effects; areas where there is mechanical deformation of the plating or
36、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 protected from corrosion during storage. NOTE Cadmium plating is not prefer
37、red 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 user, the sealing surfaces of the hose fittings shall be protected by the manufacturer from nicks and scratc
38、hes 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 purchaser when making an inquiry or placing an order: description o
39、f 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 Marking Hose fittings shall be permanently marked with the manufacturers
40、 name or trademark. 10 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 literature: “Hose fittings with 37 flared
41、ends in accordance with ISO 12151-5:2007, Connections for hydraulic fluid power and general use Hose fittings Part 5: Hose fittings with ISO 8434-2 37 flared ends.” BS ISO 12151-5:20075NOTE 1 Connection details in accordance with ISO 8434-2. NOTE 2 Method of attachment of fitting to hose is optional
42、. aAcross flats. Figure 2 Straight male hose fitting (S) Table 1 Dimensions of straight male hose fitting (S) Dimensions in millimetresd1 Hose size d2bd3cL1L2ds1Hose fitting size Thread aNominal connection size nom. min. max. min. max. hex 6 6,3 7/16-20 UNF 6 6,3 3 4,6 5,5 75 12 8 8 1/2-20 UNF 8 8 5
43、 6,2 6 80 14 10 10 9/16-18 UNF 10 10 6 7,7 6,5 85 17 12 12,5 3/4-16 UNF 12 12,5 8 10,1 7,5 100 19 16 16 7/8-14 UNF 16 16 11 12,6 9,5 110 24 20 19 11/16-12 UN 20 19 14 15,8 10,5 120 27 25 25 15/16-12 UN 25 25 19 21,8 13,5 135 36 32 31,5 15/8-12 UN 32 31,5 25 27,8 16 145 46 38 38 17/8-12 UN 38 38 31 3
44、3,4 17 160 50 50 51 21/2-12 UN 50 51 42 45,4 20 225 65 aFor the general plan of threads, see ISO 263; also see provisions for screw threads in ISO 68-2 and ISO 5864:1993, class 2A. bMinimum diameter at any point through the hose fitting prior to assembly to the hose. The diameter after assembly shal
45、l not be less than 0,9d2. cDimension d3is in accordance with ISO 8434-2, except the minimum diameter for d3shall not be less than d2. Transition between diameters d2(hose nipple through diameter) and d3(through diameter of the 37 flared end) shall be located to minimize stress concentration. dDimens
46、ion L2is measured after assembly. BS ISO 12151-5:20076 NOTE 1 Connection details in accordance with ISO 8434-2. NOTE 2 Method of attachment of fitting to hose is optional. NOTE 3 Method of attachment of swivel nut is as chosen by the manufacturer. Key 1 swivel nut aHex optional. bAcross flats. Figur
47、e 3 Straight female swivel hose fitting (SWS) Table 2 Dimensions of straight female swivel hose fitting (SWS) Dimensions in millimetresHose size d1d2 bL3 cs2 dHose fitting size ThreadaNominal connection size nom. min. max. hex 6 6,3 7/16-20 UNF 6 6,3 3 75 14 8 8 1/2-20 UNF 8 8 5 80 17 10 10 9/16-18
48、UNF 10 10 6 85 19 12 12,5 3/4-16 UNF 12 12,5 8 100 22 16 16 7/8-14 UNF 16 16 11 110 27 20 19 11/16-12 UN 20 19 14 115 32 25 25 15/16-12 UN 25 25 19 140 41 32 31,5 15/8-12 UN 32 31,5 25 160 50 38 38 17/8-12 UN 38 38 31 175 60 50 51 21/2-12 UN 50 51 42 210 75 aFor the general plan of threads, see ISO
49、263; also see provisions for screw threads in ISO 68-2 and ISO 5864:1993, class 2A. bMinimum diameter at any point through the hose fitting prior to assembly to the hose. The diameter after assembly shall not be less than 0,9d2. cDimension L3is measured after assembly. dIn accordance with ISO 4759-1:2000, product grade C. BS ISO 12151-5:20077NOTE 1 Connection details in accorda
