1、BRITISH STANDARD BS ISO 4401:2005 Hydraulic fluid power Four-port directional control valves Mounting surfaces ICS 23.100.50 BS ISO 4401:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 18 November 2005 BSI 18 November 2005 ISBN 0 580 468
2、34 8 National foreword This British Standard reproduces verbatim ISO 4401:2005 and implements it as the UK national standard. It supersedes BS ISO 4401:1994 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee MCE/18, Fluid power systems, to Subcommittee M
3、CE/18/-/5, Control components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European d
4、evelopments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the
5、section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applicatio
6、n. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 16, an inside back cover and a back cover. The BSI copyright not
7、ice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 4401:2005(E)INTERNATIONAL STANDARD ISO 4401 Third edition 2005-07-15 Hydraulic fluid power Four-port directional control valves Mounting surface
8、s Transmissions hydrauliques Distributeurs quatre orifices Plan de pose BS ISO 4401:2005ii BS ISO 4401:2005 iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Symbols . 2 5 Tolerances . 2 6 Dimensions 2 7 Pressure limitations 3 8 Identifi
9、cation statement (reference to this International Standard) . 3 Bibliography . 16 BS ISO 4401:2005 iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normall
10、y 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-governmental, in liaison with ISO, also take part in the
11、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. The main task of technical committees is to prepare In
12、ternational 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 vote. Attention is drawn to the possibility that some of
13、 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 4401 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 5, Control products and components. This third edition ca
14、ncels and replaces the second edition (ISO 4401:1994) which has been technically revised. v Introduction In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. Typical components found in such systems include hydraulic valves
15、. These devices control flow direction, pressure or flow rate of liquids in the enclosed circuit. BS ISO 4401:2005blank1 Hydraulic fluid power Four-port directional control valves Mounting surfaces 1 Scope This International Standard specifies the dimensions and other data relating to surfaces on wh
16、ich four-port hydraulic directional control valves are mounted in order to ensure their interchangeability. It applies to mounting surfaces for four-port hydraulic directional control valves which represent current practice. They are generally applicable to industrial equipment. 2 Normative referenc
17、es 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 286-2, ISO system of limits and fits Part
18、2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out ISO 1302, Geometrical Product Specifications (GPS) Indication of surface texture in techni
19、cal product documentation ISO 4287, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture parameters. ISO 5598, Fluid power systems and components Vocabulary ISO 5783, Hydraulic fluid power Code for identification of valve mounting surfaces a
20、nd cartridge valve cavities 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 apply. BS ISO 4401:20052 4 Symbols 4.1 For the purposes of this International Standard, the following symbols apply: A, B, L, P, T, T 1 , X and Y identify ports; F 1 , F
21、 2 , F 3 , F 4 , F 5and F 6identify threaded holes for fixing cap screws (bolts) (see footnote a in the figures); G, G 1 , G 2identify locating pin holes. 4.2 An explanation for the codes is given in ISO 5783. 5 Tolerances 5.1 The following values shall be applied to the mounting surface, i.e. that
22、area within dotted bold lines: surface roughness: Ra u 0,8 m as specified in ISO 1302 and ISO 4287; surface flatness: 0,01 mm over a distance of 100 mm, as specified in ISO 1101; tolerance for diameter of locating pin hole: H12 in accordance with ISO 286-2. 5.2 The following tolerances shall be comp
23、lied with along the x- and y-axes with respect to the origin: pin holes and bolt holes: 0,1 mm; port holes: 0,2 mm. As for the other dimensions, see the figures. 6 Dimensions 6.1 The mounting surface dimensions for hydraulic directional control valves with four service ports shall be selected from t
24、he figures and tables specified in 6.2 to 6.7. 6.2 Mounting surface dimensions for control valves with four service ports with 4,5 mm maximum port diameter (44010201005), are given in Figure 1 and Table 1. 6.3 Mounting surface dimensions for control valves with four service ports with 7,5 mm maximum
25、 port diameter: a) without pilot port (44010302005), are given in Figure 2 and Table 2; b) with pilot ports (44010303005), are given in Figure 3 and Table 3. 6.4 Mounting surface dimensions for control valves with four service ports with 11,2 mm maximum port diameter: a) without pilot port (44010504
26、005), are given in Figure 4 and Table 4; b) with pilot ports (44010505005), are given in Figure 5 and Table 5; c) with drain port and without pilot ports (44010506005), are given in Figure 6 and Table 6. BS ISO 4401:20053 6.5 Mounting surface dimensions for control valves with four service ports wit
27、h pilot ports and with 17,5 mm maximum port diameter, with or without drain ports (44010707005), are given in Figure 7 and Table 7. 6.6 Mounting surface dimensions for control valves with four service ports with pilot ports and with 25 mm maximum port diameter, with or without drain ports (440108080
28、05), are given in Figure 8 and Table 8. 6.7 Mounting surface dimensions for control valves with four service ports with pilot ports and with 32 mm maximum port diameter, with or without drain ports (44011009005), are given in Figure 9 and Table 9. 7 Pressure limitations Operating pressure limitation
29、s for subplates and manifold blocks with these mounting surfaces shall be established by the manufacturer. 8 Identification statement (reference to this International Standard) Use the following statement in test reports, catalogues and sales literature when electing to comply with this Internationa
30、l Standard: “Mounting surface dimensions conform to ISO 4401:2005, Hydraulic fluid power Four-port directional control valves Mounting surfaces” BS ISO 4401:20054 Codification: 44010201005 Dimensions in millimetres aThe minimum thread depth is 1,5 bolt diameters, D. The recommended full thread depth
31、 shall be 2D + 6 mm to aid interchangeability of valves and to reduce the number of fixing bolt lengths. The recommended engagement of fixing cap screw (bolt) threads for ferrous mountings is 1,25D. bThe dimensions specifying the area within the dotted bold lines are the minimum dimensions for the m
32、ounting surface. The corners of the rectangle may be radiused to a maximum radius, r max , equal to the thread diameter of the fixing cap screws (bolts). Along each axis the fixing holes are at equal distances to the mounting surface edges. cThis dimension gives the minimum space required for a valv
33、e with this mounting surface. The dimension is also the minimum distance from centreline to centreline of two identical mounting surfaces placed on a manifold block. The attention of valve manufacturers is drawn to the fact that no part of the width of the complete valve assembly is to exceed this d
34、imension. Figure 1 Mounting surface for four-port hydraulic directional control valves with 4,5 mm maximum port diameter Table 1 Mounting surface for four-port hydraulic directional control valves with 4,5 mm maximum port diameter Dimensions in millimetres P A T B F 1F 2F 3F 4G aAxis 4,5 max. 4,5 ma
35、x. 4,5 max. 4,5 max. M5 M5 M5 M5 3,4 x 12 4,3 12 19,7 0 24 24 0 26,5 y 20,25 11,25 2,25 11,25 0 0,75 23,25 22,5 17,75 NOTE Operating pressure limitations for subplates and manifold blocks with these mounting surfaces are specified by the manufacturer. aBlind holes made in the mounting surfaces to ac
36、commodate the locating pins on the valves; their minimum depth is 4 mm. BS ISO 4401:20055 Codification: 44010302005 Dimensions in millimetres aThe minimum thread depth is 1,5 cap screw (bolt) thread diameters, D. The recommended full thread depth shall be 2D + 6 mm to aid interchangeability of valve
37、s and to reduce the number of fixing cap screw (bolt) lengths. The recommended engagement of fixing cap screw (bolt) threads for ferrous mountings is 1,25D. bThe dimensions specifying the area within the dotted bold lines are the minimum dimensions for the mounting surface. The corners of the rectan
38、gle may be radiused to a maximum radius, r max , equal to the thread diameter of the fixing cap screws (bolts). Along each axis the fixing holes are at equal distances to the mounting surface edges. cThis dimension gives the minimum space required for a valve with this mounting surface. The dimensio
39、n is also the minimum distance from centreline to centreline of two identical mounting surfaces placed on a manifold block. The attention of valve manufacturers is drawn to the fact that no part of the width of the complete valve assembly is to exceed this dimension. Figure 2 Mounting surface for fo
40、ur-port hydraulic directional control valves with 7,5 mm maximum port diameter and without pilot port Table 2 Mounting surface for four-port hydraulic directional control valves with 7,5 mm maximum port diameter and without pilot port Dimensions in millimetres P A T B F 1F 2F 3F 4G aAxis 7,5 max. 7,
41、5 max. 7,5 max. 7,5 max. M5 M5 M5 M5 4 x 21,5 12,7 21,5 30,2 0 40,5 40,5 0 33 y 25,9 15,5 5,1 15,5 0 0,75 31,75 31 31,75 NOTE 1 The use of this mounting surface will require caution relative to the port seals. NOTE 2 Operating pressure limitations for subplates and manifold blocks with these mountin
42、g surfaces are specified by the manufacturer. aBlind holes made in the mounting surfaces to accommodate the locating pins on the valves; their minimum depth is 4 mm. BS ISO 4401:20056 Codification: 44010303005 Dimensions in millimetres aThe minimum thread depth is 1,5 cap screw (bolt) thread diamete
43、rs, D. The recommended full thread depth shall be 2D + 6 mm to aid interchangeability of valves and to reduce the number of fixing cap screw (bolt) lengths. The recommended engagement of fixing cap screw (bolt) threads for ferrous mountings is 1,25D. bThe dimensions specifying the area within the do
44、tted bold lines are the minimum dimensions for the mounting surface. The corners of the rectangle may be radiused to a maximum radius, r max , equal to the thread diameter of the fixing cap screws (bolts). Along each axis the fixing holes are at equal distances to the mounting surface edges. cThis d
45、imension gives the minimum space required for a valve with this mounting surface. The dimension is also the minimum distance from centreline to centreline of two identical mounting surfaces placed on a manifold block. The attention of valve manufacturers is drawn to the fact that no part of the widt
46、h of the complete valve assembly is to exceed this dimension. Figure 3 Mounting surface for four-port hydraulic directional control valves with 7,5 mm maximum port diameter and with pilot ports Table 3 Mounting surface for four-port hydraulic directional control valves with 7,5 mm maximum port diame
47、ter and with pilot ports Dimensions in millimetres P A T B F 1F 2F 3F 4X Y G aAxis 7,5 max. 7,5 max. 7,5 max. 7,5 max. M5 M5 M5 M5 3,3 max. 3,3 max. 4 x 21,5 12,7 21,5 30,2 0 40,5 40,5 0 0 40,5 33 y 25,9 15,5 5,1 15,5 0 0,7531,7531 22 9 31,75 NOTE 1 The use of this mounting surface will require caut
48、ion relative to the port seals. NOTE 2 Operating pressure limitations and manifold blocks with these mounting surfaces are specified by the manufacturer. aBlind holes made in the mounting surfaces to accommodate the locating pins on the valves; their minimum depth is 4 mm. BS ISO 4401:20057 Codifica
49、tion: 44010504005 Dimensions in millimetres aThe minimum thread depth is 1,5 cap screw (bolt) thread diameters, D. The recommended full thread depth shall be 2D + 6 mm to aid interchangeability of valves and to reduce the number of fixing cap screw (bolt) lengths. The recommended engagement of fixing cap screw (bolt) threads for ferrous
