1、AEROSPACE STANDARD BEARING, BALL, AIRFRAME ANTI-FRICTION, PULLEY AS21443Copyright 2012 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or o
2、therwise, 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 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 1998-04REVISED 2012-07THIRD ANGLE PROJECTION CUSTOD
3、IAN: AIRFRAME CONTROL BEARINGS GROUP REV.BFEDERAL SUPPLY CLASS 3110 AS21443SHEET 1 OF 3REV. BPROCUREMENT SPECIFICATION: AS7949SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandengineering sciences. Theuse ofthis report is entirely volu
4、ntary, andits applicability and suitability forany particular use,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreport at least every five years at which time itmay berevised, reaffirmed, stabilized, orcancelled. SAE invites yourwri
5、ttencomments andsuggestionsSAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS21443BRATIONALE IN ORDER TO BRING THE AS21443 DOCUMENT UP TO DATE WITH ALL THE REFERENCE DOCUMENTS, REVISION WAS CREATED. THE CHANGES MADE WERE EDITORIA
6、L AND TO MAKE THE FORMAT THE SAME AS SIMILAR DOCUMENTS WITHIN THE WORKING GROUP. A CODE “E” FOR USE OF ZINC-NICKEL PLATING WAS IMPLEMENTED. THE SEAL MATERIAL POLYTETRAFLUOROETHYLENE SHEET PER AMS3666 WAS REMOVED. NOTICE UNDER DEPARTMENT OF DEFENSE POLICIES AND PROCEDURES, ANY QUALIFICATION REQUIREME
7、NTS AND ASSOCIATED QUALIFIED PRODUCTS LIST ARE MANDATORY FOR DOD CONTRACTS. ANY REQUIREMENT RELATING TO QUALIFIED PRODUCTS LISTS / DATABASES (QPL/QPDS) HAS NOT BEEN ADOPTED BY SAE AND IS NOT PART OF THIS TECHNICAL REPORT. THE REQUIREMENTS FOR PROCURING THE PRODUCT DESCRIBED HEREIN SHALL CONSIST OF T
8、HIS SPECIFICATION SHEET AND THE LATEST ISSUE OF SAE AS7949. FIGURE 1 - PART CONFIGURATION AEROSPACE STANDARD AS21443SHEET 2 OF 3REV. BBEARING, BALL, AIRFRAME ANTI-FRICTION, PULLEY FIGURE 2 - PART CONFIGURATION TYPES TABLE 1 - DIMENSIONS AND LOADS MS DASH NO.BBORE +.0000 -.0005 2/ DOUTSIDE DIAMETER +
9、.0000 -.0005 1/ 2/ WWIDTH INNER RING+.000 -.005 1/ HWIDTHOUTERRING+.000 -.005 1/ (A) SHOULDERDIAMETERINNER RING(REF) E4/ C3/ RADIALLIMIT LOAD RATINGLB THRUSTLIMIT LOAD RATINGLB 5/ 6/ RADIAL LOAD RATING (LB) FOR AVERAGE LIFE OF 10 000 COMPLETE 90 CYCLES WEIGHT POUNDS(APPROX)TYPE SEEFIGURE 2 CORNER CH
10、AMFER X 45INNER RING BORE+.015 -.000 OUTER RING OD +.015 -.000 CASE I CASE II -3A TYPE 1 .1900 .6250 .297 .234 .297 .005 .016 705 385 705 705 .01 -3B TYPE 1 .1900 .7774 .297 .270 .332 .005 .024 1090 600 1090 1090 .02 -4A TYPE 1 .2500 .7500 .438 .312 .372 .005 .016 1090 600 1090 1090 .03 -4B TYPE 1 .
11、2500 .8750 .438 .375 .423 .005 .022 1710 800 1710 1710 .04 -4C TYPE 1 .2500 . 9014 .484 .335 .390 .005 .034 1710 800 1710 1710 .04 -5A TYPE 1 .3125 .8750 .625 .375 .455 .005 .022 1710 800 1710 1710 .04 -5B TYPE 2 .3125 .9375 .625 .563 .455 .005 .022 3420 1030 3250 2800 .07 -8 TYPE 3 .5000 1.6875 .75
12、0 .563 .768 .005 .032 11 800 5200 9320 7730 .24 -10 TYPE 1 .6250 1.1875 .438 .375 .769 .005 .022 2440 1100 2420 2180 .06 1/ ALL DIMENSIONS TO BE MET AFTER PLATING. 2/ OUT-OF-ROUND TOLERANCES: BORE: +.0002, -.0007; OUTER DIA: +.0005, -.0010. 3/ A RADIUS GIVING APPROXIMATELY THE SAME GRIP FOR STAKING
13、THE BEARING IN THE HOUSING WILL BE ACCEPTABLE. 4/ A RADIUS GIVING APPROXIMATELY THE SAME FILLET CLEARANCE WILL BE ACCEPTABLE. 5/ CASE I - LOAD FIXED WITH RESPECT TO OUTER RING. CASE II - LOAD FIXED WITH RESPECT TO INNER RING. 6/ THESE RATINGS ARE FOR OPERATION UP TO 250 F. FOR OPERATION UP TO 350 F,
14、 THE RATINGS SHALL BE REDUCED BY 20%. REQUIREMENTS: 1. MATERIAL: RINGS AND BALLS: 52100 STEEL PER AMS6440 OR AMS6444 BALL RETAINER: COLD ROLLED STEEL SEALS: POLYTETRAFLUOROETHYLENE (PTFE) PER AMS3652 SEAL RETAINERS: ANY CORROSION RESISTANT STEEL 2. LUBRICANT: MIL-PRF-81322 OR MIL-PRF-23827 TYPE I. A
15、LL BEARINGS SHALL BE PACKED WITH AN 80% MINIMUM GREASE FILL CONFORMING TO MIL-PRF-81322 UNLESS OTHERWISE SPECIFIED. IF MIL-PRF-23827 TYPE I IS REQUIRED, ADD THE DESIGNATOR “G“ AFTER THE MS21443 DASH NUMBER. MIL-PRF-23827 TYPE I SHALL NOT BE USED FOR OPERATION WHERE TEMPERATURES EXCEED 250 F. AEROSPA
16、CE STANDARD AS21443SHEET 3 OF 3REV. BBEARING, BALL, AIRFRAME ANTI-FRICTION, PULLEY 3. HARDNESS: HEAT TREAT RINGS AND BALLS TO 60-66 HRC AND STABILIZE FOR OPERATION AT 250 F 4. SURFACE ROUGHNESS: RACEWAYS AND BALL SHALL HAVE A MAXIMUM SURFACE ROUGHNESS OF 8 in Ra PER ANSI/ASME B46.1 5. PLATING: ALL E
17、XTERNAL SURFACES EXCEPT BORE, SEALS AND SEAL RETAINERS SHALL BE PLATED .0003 TO .0006 THICK WITH: (NO DESIGNATOR) CADMIUM IN ACCORDANCE WITH AMS-QQ-P-416, TYPE I, CLASS 2 DESIGNATOR “E” ZINC-NICKEL IN ACCORDANCE WITH AMS2417, TYPE 2, GRADE B 6. RADIAL INTERNAL CLEARANCE: .0004 TO .0010 7. RADIAL ECC
18、ENTRICITY: INNER RING, .0010 MAX, OUTER RING, .0016 MAX. 8. LATERAL ECCENTRICITY: INNER RING, .0010 MAX, OUTER RING, .0016 MAX. 9. PART NUMBER: THE PART NUMBER SHALL BE SEQUENCED LEFT TO RIGHT WITH DESIGNATIONS IN THE FOLLOWING SEQUENCE: EXAMPLE OF PART NUMBER: MS21443 -4AGE = BEARING, BALL, AIRFRAM
19、E, ANTIFRICTION, PULLEY TYPE .2500 INCH BORE, .0004 TO .0010 INCH RADIAL INTERNAL CLEARANCE, FILLED 80% MINIMUM WITH MIL-PRF-23827 TYPE I LUBRICANT, 250 F MAX. WITH ZINC-NICKEL PLATING ZINC-NICKEL PLATING (SEE PLATING DESIGNATOR) LUBRICANT (SEE LUBRICANT DESIGNATOR) DASH NUMBER (SEE TABLE 1) BASIC P
20、ART NUMBER NOTES: NOTICE THIS DOCUMENT REFERENCES A PART WHICH CONTAINS CADMIUM AS A PLATING MATERIAL. CONSULT LOCAL OFFICIALS IF YOU HAVE QUESTIONS CONCERNING CADMIUMS USE. 1. ALL DIMENSIONS ARE IN INCHES, UNLESS OTHERWISE SPECIFIED 2. IN THE EVENT OF A CONFLICT BETWEEN THE TEXT OF THIS SPECIFICATI
21、ON AND REFERENCES CITED HEREIN, THE TEXT OF THIS STANDARD TAKES PRECEDENCE. 3. REFERENCED GOVERNMENT (OR NON-GOVERNMENT) DOCUMENTS OF THIS ISSUE LISTED IN THAT ISSUE OF THE DEPARTMENT OF DEFENSE INDEX OF SPECIFICATIONS AND STANDARDS (DoDISS) SPECIFIED IN THE SOLICITATION FORM A PART OF THIS STANDARD
22、 TO THE EXTENT SPECIFIED HEREIN. 4. THE CHANGE BAR ( l ) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER IN LOCATING AREAS WHERE TECHNICAL 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.
