1、BSI Standards PublicationBS ISO 11901-4:2014Tools for pressing GasspringsPart 4: Gas springs with increased springforce and same built heightCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted withou
2、t license from IHS-,-,-BS ISO 11901-4:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 11901-4:2014.The UK participation in its preparation was entrusted to TechnicalCommittee MTE/12, Tools for pressing and moulding.A list of organizations represented on th
3、is committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 79402 5ICS 25
4、.120.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text affectedCopyright British Standards Institutio
5、n Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014 ISO 2014Tools for pressing Gas springs Part 4: Gas springs with increased spring force and same built heightOutillage de presse Ressorts
6、 gaz Partie 4: Ressorts gaz force accrue mme encombrement en hauteurINTERNATIONAL STANDARDISO11901-4First edition2014-03-01Reference numberISO 11901-4:2014(E)Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking
7、 permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electron
8、ic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 2
9、2 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 1
10、1901-4:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Description and terminology 14 Interchangeability dimensions and characteristics 24.1 General nominal specifications . 24.2 Gas springs of type 10 000 . 34.3 Gas springs of type
11、24 000 to 95 000 35 Marking 76 Technical delivery conditions . 77 Designation 7Bibliography 9Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11
12、901-4:2014(E)ForewordISO (the International Organization 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 f
13、or 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 work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on
14、 all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted.
15、 This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).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
16、 or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of use
17、rs and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementa
18、ry informationThe committee responsible for this document is ISO/TC 29, Small tools, Subcommittee SC 8, Tools for pressing and moulding.ISO 11901 consists of the following parts, under the general title Tools for pressing Gas springs: Part 1: General specifications Part 2: Specification of accessori
19、es Part 3: Gas spring with increased spring force and compact built height Part 4: Gas springs with increased spring force and same built heightiv ISO 2014 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduct
20、ion or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E)IntroductionThe attention of the user of ISO 11901 is drawn to the fact that gas springs will have to conform to the national regulations of the user country. ISO 2014 All rights reserved vCopyright Britis
21、h Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo
22、 reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014Tools for pressing Gas springs Part 4: Gas springs with increased spring force and same built height1 ScopeThis part of ISO 11901 specifies the dimensions (in millimetres), nominal initial forces and types of gas s
23、prings.It is applicable to gas springs with increased spring force and same built height of type 10 000 to 95 000, pressurized with nitrogen with a nominal initial force of between 10 000 N 5 % and 95 000 N 5 %, for use in press tools.It also specifies marking, technical delivery conditions and desi
24、gnation.NOTE Specifications of mounting accessories for gas springs are given in ISO 11901-2.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies
25、. For undated references, the latest edition of the referenced document (including any amendments) appliesISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designationISO 2768-1, General tolerances Part 1: Tolerances for linear and angular d
26、imensions without individual tolerance indications3 Description and terminologySee Figure 1.INTERNATIONAL STANDARD ISO 11901-4:2014(E) ISO 2014 All rights reserved 1Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or net
27、working permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E)Key1 rod2 positive stop3 valveaPressure filling inlet.bForce.cNitrogen.Figure 1 TerminologyThe gas spring is an autonomous spring pressurized with nitrogen.At rest position, the rod is pushed out.This gas spring fea
28、ture has a gas inlet for pressurization or depressurization. The inlet is located on the casing and is capped.The pressure filling inlet of the gas springs includes a pipe thread ISO 7 - Rp 1/8 in accordance with ISO 7-1.4 Interchangeability dimensions and characteristics4.1 General nominal specific
29、ationsSee Table 1.2 ISO 2014 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E)Table 1 General nominal specific
30、ationsTypeNominal initial force NMaximum filling pressure MPaEnd of stroke nomi-nal force increase coefficient10 000 10 0005 % 151,524 000 24 000 1,642 000 42 000 1,566 000 66 000 1,595 000 95 000 1,54.2 Gas springs of type 10 000See Figure 2 and Table 2.4.3 Gas springs of type 24 000 to 95 000See F
31、igure 3 and Table 2. ISO 2014 All rights reserved 3Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E)General tolerance: ISO 2768-m
32、aPressure filling.Figure 2 Gas spring of type 10 0004 ISO 2014 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(
33、E)General tolerance: ISO 2768-maPressure filling inlet.Figure 3 Gas springs of type 24 000 to 95 000 ISO 2014 All rights reserved 5Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license
34、from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E)Table 2 Dimensions of gas springs of type 10 000 to 95 000 Maximum filling pressure 15 MPaDimensions in millimetresTypeNominal strokeL l1l2l3l4l5l6r d D D1d1D2Number of holesa 0,25 min0015+ ,min min 0,3010,10 00025 1453 5 8 3,5 13 14.5 2 28 50 46 M8
35、 20 250 19580 255100 295125 345160 415200 495250 595300 69524 00025 1603 5 8 4 13 18 2,5 45 75 70 M8 40 450 21080 270100 310125 360160 430200 510250 610300 71042 00025 1703 5 8 4 13 21 2,5 60 95 90 M8 60 450 22080 280100 320125 370160 440200 520250 620300 72066 00025 1903 5 8 4 16 22,5 2,5 75 120 11
36、5 M10 80 450 24080 300100 340125 390160 460200 540250 640300 7406 ISO 2014 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 1
37、1901-4:2014(E)TypeNominal strokeL l1l2l3l4l5l6r d D D1d1D2Number of holesa 0,25 min0015+ ,min min 0,3010,95 00025 2053 5 8 4 16 24,5 2,5 90 150 145 M10 100 450 25580 315100 355125 405160 475200 555250 655300 7555 MarkingGas springs shall be labelled in an indelible way, with at least the following i
38、nformation:a) the manufacturers name;b) the gas used;c) the date of manufacture;d) the maximum filling pressure;e) the type.6 Technical delivery conditionsGas springs shall be supplied at the nominal pressure at a reference temperature of 20 C.NOTE Increase in temperature increases pressure at const
39、ant volume according to the following formula:pt= p0(1 + 0,003 6 t) whereptis the nitrogen pressure, in megapascals, at temperature t;p0is the nitrogen pressure, in megapascals, at reference temperature;t is the temperature variation.The rod shall be slightly oiled and protected against shocks.7 Des
40、ignationA gas spring in accordance with this part of ISO 11901 shall be designated by: “Gas spring”;Table 2 (continued) ISO 2014 All rights reserved 7Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitt
41、ed without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E) reference to this part of ISO 11901, i.e. ISO 11901-4; the type; the nominal stroke, in millimetres.EXAMPLE A gas spring of type 24 000, nominal stroke of 25 mm is designated as follows:Gas spring ISO 11901-4 - 24 000 258 ISO 201
42、4 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11901-4:2014ISO 11901-4:2014(E)Bibliography1 ISO 11901-2, Tools for pressing Gas springs P
43、art 2: Specification of accessories2 Council directive 97/23/CE “Pressure equipment” ISO 2014 All rights reserved 9Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS
44、ISO 11901-4:2014ISO 11901-4:2014(E) ISO 2014 All rights reservedICS 25.120.10Price based on 9 pagesCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-This page deliberat
45、ely left blankCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BSI is the national body responsible for preparing British Standards and other standards-related publica
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