1、AEROSPACE STANDARDMA1806Issued 1990-11Reaffirmed 2006-05Spring Clips and Cushion Selection forMetal Tube Support, MetricFSC 53401. SCOPE:1.1 Type:Spring clips (inner and outer) and associated PTFE single split cushion designed to support metric metal tubes (or inch tubes, using the inch series cushi
2、on).1.2 Application:Primarily for use in aerospace propulsion systems, and suitable for use up to the maximum limitations of the cushion (e.g., 260C max).2. APPLICABLE DOCUMENTS:The following publications form a part of this specification to the extent specified herein. The latest issue of aerospace
3、 standards (MA and AS) shall apply.2.1 SAE Publications:Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.MA3294 Clip - Spring, Tension, Outer, 5.5 mm Bolt Hole, AMS 5525, MetricMA3295 Clip - Spring, Tension, Inner, 5.5 mm Bolt Hole, AMS 5525, MetricMA3296 Cushion - Tube Clamp Su
4、pport, PTFE, MetricAS3298 Cushion - Tube Clamp Support, PTFE, InchMA3393 Clip - Spring, Tension, Outer, 6.7 mm Bolt Hole, AMS 5525, MetricMA3394 Clip - Spring, Tension, Inner, 6.7 mm Bolt Hole, AMS 5525, MetricRATIONALE This document has been reaffirmed to comply with the SAE 5-year Review policy. S
5、AE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
6、m, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2006 SAE International All rights reserved. No part of this publication may
7、be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fa
8、x: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE MA1806 - 2 -3. REQUIREMENTS:3.1 Parts to be Assembled:Figure 1 sho
9、ws a tube supported by a split cushion and spring clips mounted to a bracket; this being the preferred method of attachment. This method avoids loosening a structural joint for tube removal or placing holes in highly stressed areas, such as split-line flanges.FIGURE 1 - Tube Supported by a Split Cus
10、hion and Spring Clips Mounted to a Bracket3.1.1 The part number of the clips and cushions are tabulated in Table 1.3.2 Design Features:The PTFE cushion is split to allow it to be spread open and assembled onto the tube, and the clips are then sprung into position on the cushion as shown in Figure 1.
11、3.2.1 The inner clip half has an elongated hole to provide positional adjustment and to accommodate any mismatch with the outer clip which has a round bolt clearance hole.3.2.2 Alternative clip standards suitable for use with 5 mm diameter and 6 mm diameter fasteners are provided for tubing ranging
12、from 3.2 to 40 mm outside diameter (or inch tubes ranging from 0.125 to 1.500 inch outside diameter, using the inch series cushion).3.2.3 The preferred method of fastening is to sue a self-locking nut and bolt.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reprodu
13、ction or networking permitted without license from IHS-,-,-SAE MA1806 - 3 -TABLE 1 - Part Numbers of Clips and Cushion for Tube ODPREPARED BY SAE SUBCOMMITTEE G-3E, AEROSPACE TUBING INSTALLATION OFCOMMITTEE G-3, AEROSPACE COUPLINGS, FITTINGS, HOSE & TUBING ASSEMBLIESCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
