1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Hose fittings Part 4: Hose fittings with ISO 6149 metric stud endsICS 23.040.70; 23.100.40Connectio
2、ns for hydraulic fluid power and general use BRITISH STANDARDBS ISO 12151-4:2007BS ISO 12151-4:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007ISBN 978 0 580 55706 4Amendments 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 12151-4:2007. 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 12151-4:2007(E)INTERNATIONAL STANDARD ISO12151-4First edition2007-07-15Connections for hydraulic fluid power and general use Hose fittings Part 4: Hose fittings with ISO 6149 metric stud ends Raccordements pour transmissions hydrauliques et applications gnrales Flexibles de raccordement Par
6、tie 4: Flexibles avec lments mles mtriques conformes lISO 6149 BS ISO 12151-4:2007ii 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 i
7、nformation. 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 Bibliography . 9 BS ISO 12151-4:2007iv Foreword ISO (the International Organiza
8、tion for Standardization) 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
9、has the right 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. In
10、ternational 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. Publi
11、cation as an 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 r
12、ights. ISO 12151-4 was prepared by Technical 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: H
13、ose fittings with ISO 8434-3 O-ring face seal 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
14、 ends Part 6: Hose fittings with ISO 8434-6 60 cone ends BS ISO 12151-4:2007vIntroduction 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 ar
15、e connected through their ports by stud ends on fluid conductor connectors to tubes and pipes or to hose fittings and hoses. BS ISO 12151-4:2007blank1Connections for hydraulic fluid power and general use Hose fittings Part 4: Hose fittings with ISO 6149 metric stud ends 1 Scope This part of ISO 1215
16、1 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 can be supplied as agreed betwe
17、en 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 low-pressure applications. N
18、OTE 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 meets the requirements of th
19、e 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, the latest edition of the refer
20、enced 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 ISO 4759-1:2000, Tolerances for
21、 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: Dimensions, design, test met
22、hods 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 series) stud ends ISO 6605, Hydra
23、ulic 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 12151-4:20072 3 Terms and definitions For the pu
24、rposes 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 pressure of t
25、he 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 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 as
26、sembly 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 o
27、rdering. They shall be designated by the words “Hose fitting”, followed by “ISO 12151-4”, followed by a spaced hyphen, then the connection-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 o
28、r ISO 6149-3 and the hose size (nominal hose inside diameter in accordance with ISO 4397), each separated by a multiplication symbol (). 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
29、ISO 12151-4 - SDE - LM18 12,5 5.2 The following letter symbols shall be used: Connection- end type Symbol Stud SD Shape Symbol Straight S 90 elbow E Series Symbol ISO 6149-2 S ISO 6149-3 L BS ISO 12151-4:200736 Design 6.1 Figure 1 shows a typical example of a hose fitting with ISO 6149-2 and ISO 614
30、9-3 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 Tables 1 and
31、 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 manufactur
32、er, 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 or manu
33、factured 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 defects that
34、 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 12151-4:20074 7.3 Finish The external surface and threads of all carbon steel parts shall be plated or coated with a suitable material that p
35、asses 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 render that part a failure: all internal fluid passages; edges, such as
36、hex points, serrations and crests of threads where there can 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 coating caused by crimping, flaring, bending and other post-plate metal f
37、orming 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 preferred due to environmental concerns. Changes in plating can affect assembly
38、 torques and require requalification, when applicable. 7.4 Protection By a method agreed upon between manufacturer and purchaser, the face of the hose fittings shall be protected by the manufacturer from nicks and scratches that would be detrimental to the function of the hose fitting. Passages shal
39、l 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 of hose fitting (using designation in accordance with Clause 5); material of hose
40、 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 name or trademark. 10 Assembly Annex A provides guidance on the assembly of hos
41、e fittings that conform to this part of ISO 12151. BS ISO 12151-4:2007511 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 a
42、nd sales literature: “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 M
43、ethod of attachment of fitting to hose is optional. aAcross flats. Figure 2 Straight stud hose fitting (SDS) Table 1 Dimensions of straight stud hose fittings (SDS) Dimensions in millimetresd3bmax. Hose fitting size Thread Hose size d1d2amin. S series L series L1 min.L2cmax. s1hex M12 6,3 M12 1,5 6,
44、3 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 26,3
45、3 30,33 20 128,5 50 M48 38 M48 2 38 31 32,39 36,39 21 161 55 aMinimum 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. bDimension d3is in accordance with ISO 6149-2 or ISO 6149-3, except the minimum diameter for d
46、3shall not be less than d2. Transition between diameters d2(hose nipple through diameter) and d3(through diameter of the stud end) shall be located to minimize stress concentration. cDimension L2is measured after assembly. BS ISO 12151-4:20076 NOTE 1 Connection details in accordance with ISO 6149-3.
47、 NOTE 2 Method of attachment of fitting to hose is optional. NOTE 3 Only suitable for applications where the hose can be attached after the hose fitting is installed. aAcross flats. Figure 3 Adjustable 90 stud elbow (SDE) Table 2 Dimensions of 90 adjustable stud elbow hose fittings (SDE) Dimensions
48、in millimetresd3bL series Hose fitting size Thread Hose size d1d2amin. max. L3cmax. L4ref. L5 1 s1hexM12 6,3 M12 1,5 6,3 3 6,18 41 30,5 11,1 17 M14 8 M14 1,5 8 5 7,68 43 33,5 11,1 19 M16 10 M16 1,5 10 6 9,22 43 38 11,6 22 M18 12,5 M18 1,5 12,5 8 11,22 45 40 12,6 24 M22 16 M22 1,5 16 11 14,27 57 42,5
49、 12,8 27 M27 19 M27 2 19 14 18,27 60 51 15,8 32 M33 25 M33 2 25 19 23,33 65 53 15,8 41 M42 31,5 M42 2 31,5 25 30,33 70 58 15,8 50 M48 38 M48 2 38 31 36,39 77 63,5 17,3 55 aMinimum diameter at any point through the hose fitting prior to bending and/or assembly to the hose. The diameter after bending and/or assembly should not be less than 0,9d2. bDimension d3is in ac
