SAE-AS-81820-4B-2007.pdf
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1、 AEROSPACE STANDARD BEARING, PLAIN, SELF-ALIGNING, SELF- LUBRICATING, LINED BORE, LOW SPEED, NARROW, CHAMFERED RACE, -65 TO +325 F AS81820/4 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 o
2、r 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.
3、sae.org ISSUED 1998-04 REVISED 2007-10 THIRD ANGLE PROJECTION CUSTODIAN: SAE AIRFRAME CONTROL BEARINGS GROUP REV. B FEDERAL SUPPLY CLASS 3120 AS81820/4 SHEET 1 OF 4 REV. B PROCUREMENT SPECIFICATION: AS81820 SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance
4、 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 therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every
5、 five 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 S
6、TANDARD 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) M81820/4- 4 .2510 .6562 .250
7、10 .343 5550 430 2650 1.0- 5.0 0-0.5 .020 M81820/4- 5 .3135 .7500 .281 10 .375 7700 700 3700 1.0-15.0 0-1.0 .030 M81820/4- 6 .3760 .8125 .312 9 .40610200 1100 4900 1.0-15.0 0-1.0 .040 M81820/4- 7 .4385 .9062 .343 8 .43712950 1400 6700 1.0-15.0 0-1.0 .050 M81820/4- 8 .5010 1.0000 .390 8 .50017250 210
8、0 8250 1.0-15.0 0-1.0 .070 M81820/4- 9 .5635 1.0937 .437 8 .56222150 368010600 1.0-15.0 0-1.0 .090 M81820/4-10 .6260 1.1875 .500 8 .62527700 472013250 1.0-15.0 0-1.0 .120 M81820/4-12 .7510 1.4375 .593 8 .75040600 675019400 1.0-15.0 0-1.0 .210 M81820/4-14 .8760 1.5625 .703 8 .87555950 935026750 1.0-2
9、5.0 0-2.0 .270 M81820/4-16 1.0010 1.7500 .797 9 1.00073800 1216035250 1.0-25.0 0-2.0 .390 * 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., M81820/4A-5). Copyright SAE International Provid
10、ed by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 21:21:43 MSTNo reproduction or networking permitted without license from IHS -,-,- AEROSPACE STANDARD BEARING, PLAIN, SELF-ALIGNING, SELF- LUBRICATING, LIINED BORE, LOW SPEED, NARROW, CHAMFERED RACE, -6
11、5 TO +325 F AS81820/4 SHEET 2 OF 4 REV. B TABLE 2 - OVERSIZE BEARING 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 (.02
12、0) D M81820/4- 4T .2500 .6662 M81820/4- 4U .2500 .6762 M81820/4- 5T .3125 .7600 M81820/4- 5U .3125 .7700 M81820/4- 6T .3750 .8225 M81820/4- 6U .3750 .8325 M81820/4- 7T .4375 .9162 M81820/4- 7U .4375 .9262 M81820/4- 8T .5000 1.0100 M81820/4- 8U .5000 1.0200 M81820/4- 9T .5625 1.1037 M81820/4- 9U .562
13、5 1.1137 M81820/4-10T .6250 1.1975 M81820/4-10U .6250 1.2075 M81820/4-12T .7500 1.4475 M81820/4-12U .7500 1.4575 M81820/4-14T .8750 1.5725 M81820/4-14U .8750 1.5825 M81820/4-16T 1.0000 1.7600 M81820/4-16U 1.0000 1.7700 1/ BEFORE INITIATING A REPAIR PROCEDURE TO USE AN OVERSIZE BEARING, APPROVAL FOR
14、MODIFYING AND REIDENTIFYING THE BEARING HOUSING MUST BE OBTAINED FROM THE COGNIZANT ENGINEERING AUTHORITY. 2/ REFER TO 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., M81820/4A-5
15、). REQUIREMENTS: 1. MATERIAL: BALL: PH13-8 Mo STEEL ALLOY PER AMS 5629, CONDITION H1000. RACE: 17-4 PH STEEL ALLOY PER 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 SURFACE
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- 关 键 词:
- SAE AS 81820 2007
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