1、BRITISH STANDARD BS ISO 6981:1992 Implementation of ISO 6981:1992 Hydraulic fluid power Cylinders Rod end plain eyes Mounting dimensions ICS 23.100.20BSISO6981:1992 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of t
2、he Standards Board and comes into effect on 15 September 1996 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference MCE/18/3 Draft for comment 91/73505 DC ISBN 0 580 26035 6 Committees responsible for this British Standard The preparation of this British S
3、tandard was entrusted by Technical Committee MCE/18, Fluid power systems and components, to Subcommittee MCE/18/3, Cylinders, upon which the following bodies were represented: Association of British Mining Equipment Companies British Compressed Air Society British Fluid Power Association British Iro
4、n and Steel Producers Association Processing and Packaging Machinery Association Amendments issued since publication Amd. No. Date CommentsBSISO6981:1992 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword ii Foreword ii Introduction 1 1 Scope 1 2 Normative refere
5、nces 1 3 Definitions 1 4 Mounting dimensions 1 5 General requirements 3 6 Mounting instructions 3 7 Example of ordering designation 3 8 Identification statement 3 Annex A (informative) Inside back cover Figure 1 Rod end plain eyes 2 Table 1 Dimensions of rod end plain eyes 2BSISO6981:1992 ii BSI 11-
6、1998 National foreword This British Standard reproduces verbatim ISO 6981:1992 and implements it as the UK national standard. This British Standard is published under the direction of the Engineering Sector Board whose Subcommittee MCE/18/3 has the responsibility to: aid enquirers to understand the
7、text; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas stan
8、dards, are available from Customer Services, BSI, 389 Chiswick High Road, London W4 4AL. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of
9、 itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theISO title page, page ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendme
10、nts incorporated. This will be indicated in the amendment table on theinside front cover.BSISO6981:1992 ii 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 no
11、rmally 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
12、 the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard
13、requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 6981 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Sub-Committee SC 3, Cylinders. This second edition cancels and replaces the first edition (ISO6981:1982), Figure 1 andTable 1 o
14、f which have been technically revised. Annex A of this International Standard is for information only.BSISO6981:1992 BSI 11-1998 1 Introduction In hydraulic fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. One compone
15、nt of such systems is the fluid power cylinder. This is a device which converts power into linear mechanical force and motion. It consists of a movable element, i.e. a piston and piston rod, operating within a cylindrical bore. 1 Scope This International Standard specifies the mounting dimensions re
16、quired for interchangeability of rod end plain eyes of hydraulic cylinders. The rod end plain eyes have been designed specifically for use with cylinders manufactured in accordance with ISO6020-1 and ISO6022, but this does not limit their application. The plain bearing end eyes are used on piston ro
17、ds of hydraulic cylinders for mechanically transmitting the cylinder force. The design of these eyes is based on the maximum forces resulting from the specified internal diameters of the cylinders and pressures according to ISO3320 and ISO3322. 2 Normative references The following standards contain
18、provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate t
19、he possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 286-2:1988, ISO system of limits and fits Part2:Tables of standard tolerance grades and limit deviations for holes and shaft
20、s. ISO 3320:1987, Fluid power systems and components Cylinder bores and piston rod diameters Metric series. ISO 3322:1985, Fluid power systems and components Cylinders Nominal pressures. ISO 5598:1985, Fluid power systems and components Vocabulary. ISO 6020-1:1981, Hydraulic fluid power Single rod c
21、ylinders Mounting dimensions 160 bar (16000 kPa) series Part1:Medium series. ISO 6022:1981, Hydraulic fluid power Single rod cylinders Mounting dimensions 250 bar (25000 kPa) series. 3 Definitions For the purposes of this International Standard, the definitions given in ISO 5598 apply. 4 Mounting di
22、mensions SeeFigure 1 andTable 1.BSISO6981:1992 2 BSI 11-1998 Table 1 Dimensions of rod end plain eyes Figure 1 Rod end plain eyes Dimensions in millimetres Type Nominal force CK EM KK AW CA LE c ER b H9 a h12 a min. max. N 10 5 000 10 10 M10 1,25 14 37 14 32 16 15 12 8 000 12 12 M12 1,25 17 38 14 32
23、 16 16 16 12 500 16 16 M14 1,5 19 44 18 40 20 21 20 20 000 20 20 M16 1,5 23 52 22 50 25 25 25 32 000 25 25 M20 1,5 29 65 27 62 32 30 32 50 000 32 32 M27 2 37 80 32 76 40 38 40 80 000 40 40 M33 2 46 97 41 97 50 47 50 125 000 50 50 M42 2 57 120 50 118 63 58 63 200 000 63 63 M48 2 64 140 62 142 71 70 8
24、0 320 000 80 80 M64 3 86 180 78 180 90 90 100 500 000 100 100 M80 3 96 210 98 224 112 110 125 800 000 125 125 M100 3 113 260 120 290 160 135 160 1 250 000 160 160 M125 4 126 310 150 346 200 165 200 2 000 000 200 200 M160 4 161 390 195 460 250 215 250 3 200 000 250 250 M200 4 205 530 265 640 320 300
25、320 5 000 000 320 320 M250 6 260 640 325 750 375 360 a See ISO 286-2.BSISO6981:1992 BSI 11-1998 3 5 General requirements 5.1 Material 5.1.1 Rod end plain eyes shall be made of material having a minimum yield point R p0,2of 250 N/mm 2and an elongation at rupture, A min., of at least12%. 5.2 Load capa
26、city All cross-sections shall be selected so that, under the maximum tensile load produced by the cylinder, the yield strength of the material used for the rod end is at least 2,5 times the maximum tensile load. 6 Mounting instructions 6.1 Shaft A tolerance of f8 is recommended for plain bearing sha
27、fts (seeISO 286-2). 6.2 Fitting The rod end plain eye shall be screwed firmly against the piston rod shoulder before locking. 7 Example of ordering designation A rod end plain eye with a bore CK = 25mm shall be designated as: Rod end ISO 6981 25 8 Identification statement (Reference to this Internat
28、ional Standard) Use the following statement in test reports, catalogues and sales literature when electing to comply with this International Standard: “Cylinder rod end spherical eye mounting dimensions selected in accordance with ISO6981:1992, Hydraulic fluid power Cylinders Rod end plain eyes Moun
29、ting dimensions.”4 blankBSISO6981:1992 BSI 11-1998 Annex A (informative) Bibliography 1 ISO 6099:1985, Fluid power systems and components Cylinders Identification code for mounting dimensions and mounting types.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | |
30、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for prepari
31、ng British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.
32、 It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside
33、front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be ad
34、dressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide
35、range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: 020 8996 71
36、11. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Copyright Copyri
37、ght subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form
38、or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070.
