1、 AEROSPACE STANDARD BEARING, BALL, AIRFRAME ANTI-FRICTION, PULLEY CORROSION RESISTANT NITROGEN STEEL (CREN) AS21443/1 Copyright 2017 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, electro
2、nic, 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 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED2017-0
3、2THIRD ANGLE PROJECTION CUSTODIAN: ACBG FEDERAL SUPPLY CLASS 3110 AS21443/1 SHEET 1 OF 4 PROCUREMENT SPECIFICATION: AS7949 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSublished by SAEtoadvance thestate of technicaland engineering sciences. The useof this report is entirely voluntary, and i
4、ts applicability andsuitability for any particularuse, includingany patent infringement arisingtherefrom,is the sole responsLELOLWRIWKHXVHUSAE reviews eachtechnical reportatleast every fiveyears at whichtime it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments a
5、nd suggestions.SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS21443/1 RATIONALE THIS STANDARD DEFINES A CORROSION RESISTANT NITROGEN STEEL (CREN) VERSION OF THE AS21443 AIRFRAME PULLEY BEARING SERIES. NOTICE THE COMPLETE REQUIREMENTS FOR P
6、ROCURING THE PRODUCT DESCRIBED HEREIN SHALL CONSIST OF THIS DOCUMENT AND THE LATEST ISSUE OF AS7949. FIGURE 1 - PART CONFIGURATION AEROSPACE STANDARD AS21443/1 SHEET 2 OF 4 BEARING, BALL, AIRFRAME ANTI-FRICTION, PULLEY CORROSION RESISTANT NITROGEN STEEL (CREN) FIGURE 2 - PART CONFIGURATION TYPES TAB
7、LE 1 - DIMENSIONS AND LOADS AS DASH NO. B BORE +.0000 -.0005 2/ D OUTSIDE DIAMETER +.0000 -.0005 1/ 2/ W WIDTH INNER RING +.000 -.005 1/ H WIDTH OUTER RING +.000 -.005 1/ (A) SHOULDER DIAMETER INNER RING (REF) E 4/ C 3/ RADIAL LIMIT LOAD RATING POUND THRUST LIMIT LOAD RATING POUND 5/ 6/ RADIAL LOAD
8、RATING (LB) FOR AVERAGE LIFE OF 10000 COMPLETE 90 CYCLES WEIGHT POUNDS (APPROX) CORNER CHAMFER X 45 INNER RING BORE +.015 -.000 OUTER RING OD +.015 -.000 TYPE SEE FIGURE 2 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 .0
9、24 1090 600 1090 1090 .02 -4A TYPE 1 .2500 .7500 .438 .312 .372 .005 .016 1090 600 1090 1090 .03 -4B TYPE 1 .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
10、 1710 .04 -5B TYPE 2 .3125 .9375 .625 .563 .455 .005 .022 3420 1030 3250 2800 .07 -8 TYPE 3 .5000 1.6875 .750 .563 .768 .005 .032 11800 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 SURFACE TREATMENT. 2/ OUT-OF-ROUND TOL
11、ERANCES: BORE: +.0002, -.0007; OUTER DIAMETER: +.0005, -.0010. 3/ A RADIUS GIVING APPROXIMATELY THE SAME GRIP FOR STAKING 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. C
12、ASE II - LOAD FIXED WITH RESPECT TO INNER RING. 6/ THESE RATINGS ARE FOR OPERATION UP TO 250 F. FOR OPERATION UP TO 350 F, THE RATINGS SHALL BE REDUCED BY 20%. AEROSPACE STANDARD AS21443/1 SHEET 3 OF 4 BEARING, BALL, AIRFRAME ANTI-FRICTION, PULLEY CORROSION RESISTANT NITROGEN STEEL (CREN) REQUIREMEN
13、TS 1. MATERIAL: RINGS: CORROSION RESISTANT NITROGEN STEEL (CREN) PER AMS5898, AMS5925, OR AISI 422 STEEL PER AMS5655 BALLS: NO SUFFIX CODE CORROSION RESISTANT NITROGEN STEEL (CREN) PER AMS5898 OR AMS592 68),;&2(3 ALL RING SURFACES SHALL BE PASSIVATED PER AMS2700 METHOD 1 (NITRIC ACID) OR METHOD 2 (C
14、ITRIC ACID), OR ASTM A967, CITRIC I, II, OR III AMS2700 TYPE 8 SHALL NOT BE USED. 7. RADIAL INTERNAL CLEARANCE: .0004 TO .0010 AEROSPACE STANDARD AS21443/1 SHEET 4 OF 4 BEARING, BALL, AIRFRAME ANTI-FRICTION, PULLEY CORROSION RESISTANT NITROGEN STEEL (CREN) 8. RADIAL AND LATERAL ECCENTRICITY: INNER R
15、ING, .0010 MAXIMUM OUTER RING, .0016 MAXIMUM 9. PART NUMBER: THE PART NUMBER SHALL BE SEQUENCED LEFT TO RIGHT WITHOUT SPACES WITH DESIGNATIONS IN THE FOLLOWING SEQUENCE: EXAMPLE OF PART NUMBER: AS21443/1 -4A G E T = BEARING, BALL, AIRFRAME, ANTIFRICTION, PULLEY TYPE, CREN .2500 INCH BORE, .0004 TO .
16、0010 INCH RADIAL INTERNAL CLEARANCE, FILLED 80% MINIMUM WITH MIL-PRF-23827 TY3(,/8%5,&$17 F MAX. WITH ZINC-NICKEL PLATING AND CRES BALLS PER AMS5880 OR AMS5618 BALL MATERIAL CODE (SEE REQUIREMENT 1) SURFACE TREATMENT CODE (SEE REQUIREMENT 6) LUBRICANT CODE (SEE REQUIREMENT 4) $6$6+18MBER (SEE TABLE
17、1) AEROSPACE STANDARD NUMBER NOTES NOTICE THIS DOCUMENT REFERENCES A PART WHICH CONTAINS CADMIUM AS A PLATING MATERIAL. CONSULT LOCAL OFFICIALS IF YOU HAVE QUESTIONS CONCE51,1*&$0,80686(. 1. ALL DIMENSIONS ARE IN INCHES, UNLESS OTHERWISE SPECIFIED. 2. IN THE EVENT OF A CONFLICT BETWEEN THE TEXT OF T
18、HIS SPECIFICATION AND REFERENCES CITED HEREIN, THE TEXT OF THIS STANDARD TAKES PRECEDENCE. 3. REFERENCED DOCUMENTS SHALL BE OF THE ISSUE IN EFFECT ON DATE OF INVITATION FOR BIDS. 4. REVISION INDICATOR: A CHANGE BAR (I) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER IN LOCATING AREAS W
19、HERE 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, INCLUDING TECHNICAL REVISIONS. CHANGE BARS AND (R) ARE NOT USED IN ORIGINAL PUBLICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY.
