1、_SAE 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 theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2013 SAE International All rights reserved. No part of this pub
3、lication may 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: +1 724-776-4970
4、(outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/ARP5448BAEROSPACERECOMMENDED PRACTICEARP5448 REV. BIssued 2001-03 Revised 2013-10 Su
5、perseding ARP5448A Plain Bearing Test Methods RATIONALEARP5448 Revision B is a five year review and update of this specification. 1. SCOPE This SAE Aerospace Recommended Practice (ARP) establishes methods for testing airframe plain bearings. The purpose of ARP5448 and its associated slash sheets is
6、to document test methods commonly used to evaluate airframe bearings. These test methods may be referenced in specifications, part standards, purchase orders, etc., when the test is deemed appropriate to the intended use of the bearing by the end user of the bearing. These test methods are not inten
7、ded to encompass every conceivable requirement for an airframe bearing. The end user of the bearing must exercise engineering judgment to determine the most appropriate standard and/or nonstandard tests for the application. 2. APPLICABLE DOCUMENTS The following publications form a part of this docum
8、ent to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this do
9、cument takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or
10、 724-776-4970 (outside USA), www.sae.orgARP5448/1 Plain Bearing Radial Limit and Ultimate Load Tests ARP5448/2 Plain Bearing High Speed Oscillation Test ARP5448/3 Plain Bearing Low Speed Oscillation Test ARP5448/4 Plain Bearing Bond Integrity - Peelable Woven Fabric PTFE Liners ARP5448/5 Plain Beari
11、ng No-Load Rotational Breakaway Torque Measurement ARP5448/6 Plain Spherical Bearing Conformity Examination SAE INTERNATIONAL ARP5448B Page 2 of 3 ARP5448/7 Plain Bearing Wear Measurement ARP5448/8 Plain Spherical Bearing Radial and Axial Clearance Measurement ARP5448/9 Plain Bearing Lined Inside Di
12、ameter Plug Gaging 3. GENERAL REQUIREMENTS 3.1 Test Method-Numbering System This standard consists of a general basic document and supporting slash sheet documents. Each slash sheet document addresses a specific test method which is designated by a slash number commencing with number 1. A different
13、slash number is assigned to each test method. 3.2 Document Format Each test method is prepared as an individual document in the format of an Aerospace Recommended Practice. The basic document identifier, ARP5448, followed by a sequential slash number identifies the individual test method. The slash
14、number is identical to the number of the test method. See Figure 1 for an example: ARP5448 / 1 Slash number -Test Method No. 1, “Plain Bearing Radial Limit and Ultimate Load Tests” Document identifier assigned to the basic standard FIGURE 1 3.3 Method of Revision The individual test method is revise
15、d and issued independent of the other parts. Revisions are identified by a capital letter immediately following the document identifier dash number. See Figure 2 for an example: ARP5448 / 1 ( ) Revision Letter Slash number -Test Method No. 1, “Plain Bearing Radial Limit and Ultimate Load Tests” Docu
16、ment identifier assigned to the basic standard FIGURE 2 3.4 Selection of Tests Both the application requirements and the bearing characteristics that affect its performance in the application should be considered when selecting tests. After these essential properties have been determined, the approp
17、riate test should be selected and specified for each property. Care should be taken to specify only those tests that are needed. SAE INTERNATIONAL ARP5448B Page 3 of 3 3.5 Method of Reference Test methods shall be referenced by specifying: a. The test method number with the applicable slash sheet nu
18、mber. For example: “The bearing shall be tested in accordance with ARP5448/5“ to specify the current version. b. Test criteria or property values required. 4. DETAIL REQUIREMENTS Detail requirements shall be incorporated in the individual test method. ARP5448/1, Plain Bearing Static Test ARP5448/2,
19、Plain Bearing High Speed Oscillation Test ARP5448/3, Plain Bearing Low Speed Oscillation Test ARP5448/4, Plain Bearing Bond Integrity - Peelable Woven Fabric PTFE Liners ARP5448/5, Plain Bearing No-Load Rotational Breakaway Torque Measurement ARP5448/6, Plain Spherical Bearing Conformity Examination
20、 ARP5448/7, Plain Bearing Wear Measurement ARP5448/8, Plain Spherical Bearing Radial and Axial Clearance Measurement ARP5448/9, Plain Bearing Lined Inside Diameter Plug Gaging 5. NOTES 5.1 A change bar (l) located in the left margin is for the convenience of the user in locating areas where technica
21、l revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY SAE AIRFRAME CONTROL BEARINGS GROUP
