1、Small craft - Remote steering systems (ISO 8848:1990)BS EN ISO 8848:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN ISO 8848:2017. It is identical to ISO 8848:1990. It supersedes BS EN 28848:19
2、93, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GME/33, Small craft.A list of organizations represented on this committee can be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 con
3、tract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 96509 8ICS 47.080Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the auth
4、ority of the Standards Policy and Strategy Committee on 30 November 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 8848:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 8848August 2017ICS 47.080 Supersedes EN 28848:1993, EN 28848:1993/EUROPEAN
5、 COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN Ref. No. EN ISO 8848:2017: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersSmall cra
6、ft - Remote steering systems (ISO 8848:1990)Navires de plaisance - Appareils gouverner commands distance (ISO 8848:1990)Kleine Wasserfahrzeuge - Steueranlagen (ISO 8848:1990)This European Standard was approved by CEN on 23 July 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regul
7、ations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN membe
8、r.This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.CEN
9、members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po
10、rtugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 8848:2017 (E)European forewordThe text of ISO 8848:1990 has been prepared by Technical Committee ISO/TC 188 “Small craft” of the International Organization for Standardization (IS
11、O) and has been taken over as EN ISO 8848:2017.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2018, and conflicting national standards shall be withdrawn at the latest by February 2018.A
12、ttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN 28848:1993.This document has been prepared under a mandate given to CEN by
13、the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.According to the CEN-CENELEC Internal Regulations, the national standard
14、s organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem
15、bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 8848:1990 has been approved by CEN as EN ISO 8848:2017 without any modification.2BS EN ISO 8848:2017ISO 8848:1990(E)Fo
16、reword iv1 Scope . 12 Definitions . 13 General requirements . 24 Outboard motor and inboard-outdrive requirements 35 Steering system requirements . 46 Installation . 67 Test requirements . 87.1 As-installed tests . 87.2 Component tests 87.2.1 Steering cable and output assembly tests 87.2.2 Helm asse
17、mbly tests . 87.2.3 Steering-wheel tests . 9 ISO 1990 All rights reserved iiiContents PageBS EN ISO 8848:2017ISO 8848:1990(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internationa
18、l 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, governmental and non-governmental, in liaison with ISO,
19、also take part in 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 Interna
20、tional Standard requires approval by at least 75 % of the member bodies casting a vote.International Standard ISO 8848 was prepared by Technical Committee ISO/TC 188, Small craft.NOTE 1 This International Standard specifies requirements and test methods for remote steering systems as cited in clause
21、 1. More specialized requirements for such steering systems to be applied to simple outboard motors of 15 kW to 40 kW power are given in a parallel document, ISO 9775, Small craft Remote steering systems for single outboard motors of 15 kW to 40 kW power.iv ISO 1990 All rights reservedBS EN ISO 8848
22、:2017Small craft - Remote steering systems (ISO 8848:1990)1 ScopeThis International Standard specifies requirements and test methods for remote push-pull cable steering systems and their major component items, used for small craft with single and twin installations of outboard motors of over 15 kW p
23、ower, and all inboard motors, inboard motor-outdrives, and water-jet drives.2 DefinitionsFor the purposes of this International Standard, the following definitions apply.2.1steering systemAssembly including all components necessary to transmit remote manual effort to the rudder, outboard motor, inbo
24、ard-outdrive or water-jet drive.2.2boat-mounted steering systemSystem in which an output ram guide tube is secured to the boat.2.3motor-mounted steering systemSystem in which an output ram guide tube is secured to the engine.2.4drag linkDevice in a motor-mounted steering system by which the linear f
25、orce of the output ram is transmitted to the motor steering arm.2.5helmMechanism, exclusive of a steering-wheel or other means for manual application of controlling force, by which controlling force is fed into a steering system cable or other force-transmission means.2.6minimum retained system perf
26、ormanceSystem capability after test(s) such that at least 90 % of the steering arc normally available each side of the mid-position may be obtained by exertion of no more than 27 Nm of torque at the helm, through the wheel or other normal control.This criterion does not define steering system perfor
27、mance while a boat is underway but is intended to provide quantitative limits for design and test purposes.INTERNATIONAL STANDARD ISO 8848:1990(E) ISO 1990 All rights reserved 1BS EN ISO 8848:2017ISO 8848:1990(E)3 General requirements3.1 When steering systems are factory-installed in the boat, the c
28、omplete system shall be supplied. In outboard motor-boats, the system shall be supplied complete to the interface point at the ram output end as shown in figure 1.Minimum travel: 100 mm each side of mid-travel position;maximum travel: 115 mm each side of mid-travel position.Figure 1 Output ram3.2 Th
29、e steering system selected shall be installed in accordance with this International Standard.3.3 Boats suitable for twin outboard motors shall be so designated, and it shall also be specified whether the boat is suitable for motor-mounted steering systems, boat-mounted steering systems or both. If t
30、he boat is suitable for boat-mounted steering systems, it shall also be specified whether well mounting, transom mounting or both (see figure 2) may be used.3.4 All threaded fasteners use of which affects safe operation of the steering system shall incorporate locking means.3.5 Threaded fasteners us
31、e of which affects safe operation of the steering system and which are intended to be mounted or adjusted when installing the steering system in the boat, and which may be expected to be disturbed by installation or adjustment procedures, shall be locked by a locking device provided with instruction
32、s for correct assembly and complying with the requirements in 3.5.1 to 3.5.3.3.5.1 Loose lock-washers, fasteners with metallic distorting threads and adhesive are prohibited.3.5.2 Plain, threaded jam nuts are prohibited except that they may be used to permit adjustment and shall be designed so that
33、total separation of parts or other complete loss of steering will not occur should they loosen.NOTE 2 For assemblies not intended to be disassembled for installation, the choice of locking means is within the discretion of the system manufacturer.2 ISO 1990 All rights reservedBS EN ISO 8848:2017ISO
34、8848:1990(E)3.5.3 A locking device shall be so designed that its presence can be determined by visual inspection or feel by a layman after installation.3.6 Connection fittings including quick-disconnect fittings relying upon a spring or springs to maintain the connection shall not be used.NOTE If th
35、e swivel is mounted in the motor well side fitting, the motor well shall provide for 380 mm mid-travel position from the swivel axis to the motor axis.Minimum travel: 100 mm each side of mid-travel position;maximum travel: 115 mm each side of mid-travel position.Figure 2 Boat-mounted steering system
36、4 Outboard motor and inboard-outdrive requirements4.1 The steering stops on the outboard motor shall permit at least 30 of angular movement to either side of the centreline.4.2 Outboard motors shall meet the applicable dimensional requirements indicated in figure 3 and figure 4.4.3 The necessary fit
37、tings to attach an outboard motor to the steering output ram shown in figure 1 shall be supplied with the outboard motor. ISO 1990 All rights reserved 3BS EN ISO 8848:2017ISO 8848:1990(E)4.4 The outboard motor shall be designed so that, with any combination of motor turn and tilt, there shall be no
38、damaging interference between the motor, its accessories, and both the boat-mounted system installed as shown in figure 2 and the motor-mounted system, provided the motor is designed for both systems. Appropriate written information and installation instructions shall be provided, clearly indicating
39、 the type of steering system(s) that should be used.4.5 Outboard motors shall be designed so that the geometry ensures that a static load of 3 300 N, applied at the steering-arm connection point normal to the steering arm in its normal plane of operation, throughout the maximum steering arc, will no
40、t result in steering output ram loadings greater than those specified in 7.2.1.4.6 The steering arm of the outboard motor shall be provided with a 3/8-24 UNF thread, or a plain hole of 9,65 mm to 9,9 mm diameter at the connection point.4.7 Inboard-outdrives shall be designed with proper geometry to
41、ensure that a torque of 680 Nm applied about the outdrive steering axis will not result in a steering component loading greater than that specified in 7.2.1.5 Steering system requirements5.1 Motor-mounted steering systems shall meet the dimensional requirements indicated in figure 1, figure 3 and fi
42、gure 4.5.2 Boat-mounted steering systems for outboard motor installations shall meet the dimensional requirements indicated in figure 1 and figure 2. When a joint as shown in figure 2 is replaced by a universal joint with two movement axes, the axis perpendicular to the transom face shall be located
43、 0 to 13 mm above the motor clamp bracket horizontal mounting face. The second axis shall be 100 mm to 115 mm from the inner surface of the transom and shall be not more than 28,5 mm from the first axis toward the motor.5.3 Steering cables shall be marked at the engine end with a steering system len
44、gth which shall be the length from the steering-wheel shaft centre to the hole centre in the steering output ram at the mid-travel position.5.4 Installation instructions for steering helms shall include recommendations for the maximum diameter and deepest wheel dish (see figure 5) that may be used w
45、ith the helm. In addition, the maximum diameter and deepest wheel dish information shall be permanently marked on the helm assembly to be visible when the helm is installed with the wheel removed.NOTE The tube may be threaded equal length on both ends or reversible for port steering installations.Fi
46、gure 3 Motor-mounted steering tube4 ISO 1990 All rights reservedBS EN ISO 8848:2017ISO 8848:1990(E)Figure 4 Motor-mounted steering tilt axisNOTE The standard quoted diameter is taken as the actual diameter minus 50 mm.Figure 5 ISO 1990 All rights reserved 5BS EN ISO 8848:2017ISO 8848:1990(E)Figure 6
47、 Motor-mounted steering system5.5 Steering systems and components shall be capable of meeting the applicable test requirements specified in clause 7.5.6 Plastics and elastomers which may be exposed to sunlight shall be chosen to resist degradation by ultraviolet radiation.5.7 Plastics and elastomers
48、 which may be installed in engine compartments shall be chosen to resist degradation by saline atmospheres, fuel, oil and heat.6 Installation6.1 Except for installations specifically intended for boats or outboard motors with special requirements, either the motor-mounted or the boat-mounted steerin
49、g system shall be used.6.2 If installing motor-mounted steering systems in outboard motor-boats, steering cables or other force-transmission means shall be selected so that, as installed and at mid-travel position, the output ram or equivalent component connection point shall reach at least 270 mm beyond the motor centreline as indicated in figure 6.6.3 If installing boat-mounted steering systems in outboard motor-boats, steering cables or other force-transmission means shall be selected so that, as installed and at mid-travel positio
