SAE-AS-81820-2B-2007.pdf
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1、 AEROSPACE STANDARD BEARING, PLAIN, SELF-ALIGNING, SELF- LUBRICATING, LINED BORE, LOW SPEED, WIDE, CHAMFERED RACE, -65 TO +325 F AS81820/2 Copyright 2007 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or
2、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) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sa
3、e.org ISSUED 1998-04 REVISED 2007-10 THIRD ANGLE PROJECTION CUSTODIAN: SAE AIRFRAME CONTROL BEARINGS GROUP REV. B FEDERAL SUPPLY CLASS 3120 AS81820/2 SHEET 1 OF 4 REV. B PROCUREMENT SPECIFICATION: AS81820 SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance t
4、he 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 therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every f
5、ive years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. RATIONALE THE REASON FOR UPDATING THIS DOCUMENT IS TO INCORPORATE AN “A” PART NUMBER DESIGNATION FOR A NEW LINER SYSTEM THAT HAS THE SAME WEAR LIMIT BUT 4 TIMES THE LIFE OF THE STA
6、NDARD LINER SYSTEM. FIGURE 1 TABLE 1 - DIMENSIONS AND STRENGTHS STATIC LIMIT LOAD NO-LOAD ROTATIONAL BREAKAWAY TORQUE IN-LB PART NO.* B +.0000 .0010 D +.0000 .0005 H .005 Q (REF) W +.000 .002 RADIAL LB AXIAL LB OSCIL- LATING LOAD LB STANDARD * “K“ TYPE WT LB MAX (REF) M81820/2- 5 .3135 .6875 .31714
7、.437 9250 1640 4450 1.0-15.0 0-1.0 .035 M81820/2- 6 .3760 .8125 .406 8 .500 13000 2630 6200 1.0-15.0 0-1.0 .060 M81820/2- 7 .4385 .9375 .44210 .562 17250 3650 8250 1.0-15.0 0-1.0 .080 M81820/2- 8 .5010 1.0000 .505 9 .625 21400 497010600 1.0-15.0 0-1.0 .100 M81820/2- 9 .5635 1.1250 .53610 .687 26600
8、537013200 1.0-15.0 0-1.0 .135 M81820/2-10 .6260 1.1875 .56712 .750 29000 613016150 1.0-15.0 0-1.0 .160 M81820/2-12 .7510 1.3750 .63013 .875 37000 773024800 1.0-15.0 0-1.0 .240 M81820/2-14 .8760 1.6250 .755 6 .875 560001080026750 1.0-25.0 0-2.0 .350 M81820/2-16 1.0010 2.1250 1.00512 1.375103300193004
9、9300 1.0-25.0 0-2.0 .970 * SEE REQUIREMENT 5 “NO-LOAD TORQUE“ AND NOTE 5. * FOR TYPE A BEARINGS, THE CORRESPONDING PART NUMBER WILL HAVE AN “A” DESIGNATION AFTER THE MS PART NUMBER (E.G., M81820/2A-5). Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913
10、977001 Not for Resale, 12/04/2007 20:11:09 MSTNo reproduction or networking permitted without license from IHS -,-,- AEROSPACE STANDARD BEARING, PLAIN, SELF-ALIGNING, SELF- LUBRICATING, LINED BORE, LOW SPEED, WIDE, CHAMFERED RACE, -65 TO +325 F AS81820/2 SHEET 2 OF 4 REV. B TABLE 2 - OVERSIZE BEARIN
11、G DIMENSIONS 1/ 2/ RESTRICTED USAGE FOR REPAIR WORK ONLY .010” AND .020” OVERSIZE OUTSIDE DIAMETER FOR REPLACEMENT OF BEARINGS SHOWN ON SHEET 1 PART NO. 3/ NOMINAL SIZE 1ST OVERSIZE (.010) D PART NO. 3/ NOMINAL SIZE 2ND OVERSIZE (.020) D M81820/2- 5T .3125 .6975 M81820/2- 5U .3125 .7075 M81820/2- 6T
12、 .3750 .8225 M81820/2- 6U .3750 .8325 M81820/2- 7T .4375 .9475 M81820/2- 7U .4375 .9575 M81820/2- 8T .5000 1.0100 M81820/2- 8U .5000 1.0200 M81820/2- 9T .5625 1.1350 M81820/2- 9U .5625 1.1450 M81820/2-10T .6250 1.1975 M81820/2-10U .6250 1.2075 M81820/2-12T .7500 1.3850 M81820/2-12U .7500 1.3950 M818
13、20/2-14T .8750 1.6350 M81820/2-14U .8750 1.6450 M81820/2-16T 1.0000 2.1350 M81820/2-16U 1.0000 2.1450 1/ BEFORE INITIATING A REPAIR PROCEDURE TO USE AN OVERSIZE BEARING, APPROVAL FOR MODIFYING AND REIDENTIFYING THE BEARING HOUSING MUST BE OBTAINED FROM THE COGNIZANT ENGINEERING AUTHORITY. 2/ REFER T
14、O NAS0331 FOR INSTALLATION PROCEDURE AND STAKING FORCES. 3/ FOR TYPE A BEARINGS, THE CORRESPONDING PART NUMBER WILL HAVE AN “A” DESIGNATION AFTER THE MS PART NUMBER (E.G., M81820/2A-5). REQUIREMENTS: 1. MATERIAL: BALL: PH13-8 Mo STEEL ALLOY PER AMS 5629, CONDITION H1000. RACE: 17-4 PH STEEL ALLOY PE
15、R AMS 5643. LINER: PTFE SHALL BE INCLUDED IN THE LINER. 2. SURFACE TEXTURE: BALL DIA Ra 8 MAX; BALL FACES AND RACE DIA Ra 32 MAX; ALL OTHER METALLIC SURFACES Ra 125 MAX. LINER SURFACES ARE EXEMPT FROM SURFACE TEXTURE MEASUREMENTS. 3. SURFACE FINISH: RACE: PLATING, WHEN SPECIFIED, SHALL BE ZINC-NICKE
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- SAE AS 81820 2007
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