1、BSI Standards Publication BS ISO 8177:2015 Aerospace Omega clamps (saddle clamps) for fluid systems DimensionsBS ISO 8177:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 8177:2015. It supersedes BS M 64:1987 which is withdrawn. The UK participation in it
2、s preparation was entrusted to Technical Committee ACE/69, Aerospace hydraulic systems, fluids and 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 contract. U
3、sers are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 85849 9 ICS 49.080 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authorit
4、y of the Standards Policy and Strategy Committee on 30 June 2015. Amendments issued since publication Date Text affectedBS ISO 8177:2015 ISO 2015 Aerospace Omega clamps (saddle clamps) for fluid systems Dimensions Aronautique et espace Colliers en omga pour systmes de fluides Dimensions INTERNATIONA
5、L STANDARD ISO 8177 Third edition 2015-07-01 Reference number ISO 8177:2015(E)BS ISO 8177:2015ISO 8177:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
6、 or utilized otherwise in any form or by any means, electronic 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
7、 copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 8177:2015ISO 8177:2015(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 Field of application 1 4 Field of use 1 5 Description . 1 6 Dime
8、nsions . 2 ISO 2015 All rights reserved iii Contents PageBS ISO 8177:2015ISO 8177:2015(E) 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 normally carried ou
9、t 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 work. ISO co
10、llaborates closely with the International Electrotechnical Commission (IEC) on 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 app
11、roval criteria needed for the different types of ISO documents should be noted. 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
12、 subject of patent rights. ISO shall not be held responsible for identifying any 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
13、 trade name used in this document is information given for the convenience of users 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 t
14、he Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information. The committee responsible for this document is ISO/TC 20, Aircraft and space vehicles, SC 10, Aerospace fluid systems and components. This third edition cancels and replaces the second edition (ISO 8177:
15、1987), which constitutes a minor revision.iv ISO 2015 All rights reservedBS ISO 8177:2015INTERNATIONAL ST ANDARD ISO 8177:2015(E) Aerospace Omega clamps (saddle clamps) for fluid systems Dimensions 1 Scope This International Standard specifies maximum and minimum dimensions for omega clamps (saddle
16、clamps) installed by means of two bolts with nominal diameters of 5 mm. The specified dimensions define a dimensional envelope. This International Standard shall not be considered as an inter-changeability standard. The tolerances for each type of clamp are to be defined in the parts standards drawi
17、ngs. 2 Normative references The 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. For undated references, the latest edition of the referenced document (including any
18、amendments) applies. ISO 6771, Aerospace Fluid systems and components Pressure and temperature classifications 3 Field of application These clamps are intended for the installation, support and guiding of rigid tubing or hose assemblies used in aerospace equipment. NOTE Omega clamps (saddle clamps)
19、may also be used for other equipment, e.g. electrical cables or looms. 4 Field of use Omega clamps (saddle clamps) are classified into six types according to the temperature range in which they are intended to be used (see Table 1). Table 1 Types of omega (saddle) clamps Clamp type Temperature range
20、 a min. max. 1 55 +70 2 55 +135 3 55 +200 4 55 +320 5 55 +400 6 55 +650 a See ISO 6771. 5 Description The omega clamp (saddle clamp) is a “multi-component”-type clamp. It consists of a top band and a base contoured to the tubing. Mounting holes in the top band align with holes in the base on install
21、ation. This ISO 2015 All rights reserved 1BS ISO 8177:2015ISO 8177:2015(E) clamp is designed for single tubing installation, and can be provided as a metallic support only or with a plastomer or elastomer cushion or sheathing, as specified in the parts standard. 6 Dimensions The omega clamp (saddle
22、clamp) shall be in accordance with the figure and Table 2. The shape of clamp illustrated in the figure does not purport to be the exact shape of the manufactured clamp. Table 2 only specifies those dimensions required to define the maximum envelope and the proper location of the tube relative to th
23、e mounting plane and fastening points. Key 1 tube opening Figure 1 Maximum envelope dimensions for omega clamps (saddle clamps) Table 2 a Nominal diameter of tube DN Dimensions in millimetres Nominal diameter of tube DN b A B c D E F G H L c min. max. min. max. max. min. max. max. min. max. max. 14
24、36,5 37, 3 7, 8 11,8 2,5 8,1 5,8 2,2 5,2 5,5 19 16 38,5 39,3 8,8 12,8 2,5 8,1 5,8 2,2 5,2 5,5 19 18 40,5 41,3 9,8 13,8 2,5 8,1 5,8 2,2 5,2 5,5 19 20 42,5 43,3 10,8 14,8 2,5 8,1 5,8 2,2 5,2 5,5 19 22 44,5 45,3 11,8 15,8 2,5 8,1 5,8 2,2 5,2 5,5 19 25 49 49,8 13,7 17,9 3,3 8,8 6,6 2,7 5,2 5,5 21 aAll d
25、imensions in this table apply with the tube assembled in the tightened clamp. bDiameters DN 14, 18, 22, 28, 36, 45, 56, 70, and 90 are non-preferred sizes for tubing in fluid systems. cThis dimension is an overall dimension which includes metal width and cushion or sheathing.2 ISO 2015 All rights re
26、servedBS ISO 8177:2015ISO 8177:2015(E) Nominal diameter of tube DN b A B c D E F G H L c min. max. min. max. max. min. max. max. min. max. max. 28 52 52,8 15,2 19,4 3,3 8,8 6,6 2,7 5,2 5,5 21 32 56 56,8 17, 2 21,4 3,3 8,8 6,6 2,7 5,2 5,5 21 36 60 60,8 19,2 23,4 3,3 8,8 6,6 2,7 5,2 5,5 21 40 64 64,8
27、21,2 25,4 3,3 8,8 6,6 2,7 5,2 5,5 21 45 69 69,8 23,7 27,9 3,3 8,8 6,6 2,7 5,2 5,5 21 50 74 74,8 26,2 30,4 3,3 8,8 6,6 2,7 5,2 5,5 21 56 81,4 82,2 29,5 33,8 4 9,5 6,6 3,3 5,2 5,5 24 63 88,4 89,2 33 37, 3 4 9,5 6,6 3,3 5,2 5,5 24 70 95,4 96,2 36,5 40,8 4 9,5 6,6 3,3 5,2 5,5 24 80 105,4 106,2 41,5 45,8
28、 4 9,5 6,6 3,3 5,2 5,5 24 90 115,4 116,2 46,5 50,8 4 9,5 6,6 3,3 5,2 5,5 24 100 125,4 126,2 51,5 55,8 4 9,5 6,6 3,3 5,2 5,5 24 aAll dimensions in this table apply with the tube assembled in the tightened clamp. bDiameters DN 14, 18, 22, 28, 36, 45, 56, 70, and 90 are non-preferred sizes for tubing i
29、n fluid systems. cThis dimension is an overall dimension which includes metal width and cushion or sheathing.Table 2 (continued) ISO 2015 All rights reserved 3BS ISO 8177:2015ISO 8177:2015(E) ISO 2015 All rights reserved ICS 49.080 Price based on 3 pagesThis page deliberately left blankBSI is the na
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