1、AEROSPACE STANDARD BEARING, ROLLER, SELF-ALIGNING, DOUBLE ROW, AIRFRAME, ANTI-FRICTION, SEALED, TYPE II AS28913Copyright 2014 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, me
2、chanical, 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 ISSUED 1998-06REVIS
3、ED 2014-07THIRD ANGLE PROJECTION CUSTODIAN: ACBG REV.CFEDERAL SUPPLY CLASS 3110 AS28913SHEET 1 OF 2REV. CPROCUREMENT SPECIFICATION: AS8914SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandengineeringsciences.The useofthis reportisentir
4、elyvoluntary, 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 y
5、ourwrittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS28913CRATIONALE CADMIUM WARNING NOTE MODIFIED, METRIC DIMENSIONS REMOVED FROM TABLES, GREASE NOTE 2 AMENDED, CODE “E” FOR ZN-NI CALLOUT ADDED AN
6、D EXAMPLE OF PART NUMBER ADDED NOTICE THE COMPLETE REQUIREMENTS FOR PROCURING THE PRODUCT DESCRIBED HEREIN SHALL CONSIST OF THIS DOCUMENT AND THE LATEST ISSUE OF AS8914. FIGURE 1 TABLE 1 - DIMENSIONS AND STRENGTHS DASH NO - A - B - C D E F G - HWT MAX. LB STATIC LIMIT LOAD LB DYNAMIC LOAD LB +.0000
7、-.0005 +.0000 -.0005 +.005 -.005 +.015 -.000 +.000 -.005 +.000 -.005 GROOVE WIDTH MIN LUBRICATION HOLE BORE OD*1 DIA RAD WIDTH OUTER RINGWIDTH INNERRING RADIAL AXIAL RADIAL AXIAL -4C .2500 .9014 .450 .050 .464 .625 .050 .047 .06 3080 1690 2560 1380 -5C .3125 1.2500 .520 .656 .812 .080 .060 .17 7590
8、4300 6300 3570 -6C .3750 1.4375 .610 .750 .937 .26 10 100 5790 8390 4800 -8C .5000 1.6875 .820 .812 1.000 .40 12 700 6380 10 600 5300 -10C .6250 1.9375 .940 .937 1.125 .60 18 900 9450 15 700 7840 -12C .7500 2.3750 1.120 1.125 1.312 .110 .090 1.04 31 400 15 400 26 000 12 800 BASIC (NOMINAL) DIAMETER
9、BEARING ROUNDNESS LIMITS *2 BORE ACCEPTANCE LIMITS OD ACCEPTANCE LIMITS d MIN MEAN DIAMETER d MAX D MIN MEAN DIAMETER D MAX OVER INCL LOW HIGH LOW HIGH .0000 2.0000 -.0006 -.0005 +.0000 +.0001 -.0008 -.0005 +.0000 +.0003 2.0000 4.0000 -.0009 -.0007 +.0000 +.0002 -.0012 -.0007 +.0000 +.0005 *1 TOLERA
10、NCE ON -12C O.D. IS +.0000 TO -.0007. *2 BORE AND OD ROUNDNESS MEASUREMENT PER AS8914, SECTION 4.5.15 SEE NOTE 12AEROSPACE STANDARD AS28913SHEET 2 OF 2REV. CBEARING, ROLLER, SELF-ALIGNING, DOUBLE ROW, AIRFRAME, ANTI-FRICTION, SEALED, TYPE II NOTES: NOTICE THIS DOCUMENT REFERENCES A PART WHICH MAY CO
11、NTAIN CADMIUM AS A PLATING MATERIAL. CONSULT LOCAL OFFICIALS IF YOU HAVE QUESTIONS CONCERNING CADMIUMS USE. REQUIREMENTS: 1. MATERIAL: RETAINERS: SAE 4140 STEEL PER AMS6382, ALUMINUM BRONZE ALLOY PER AMS4640, OR COPPER ALLOY PER ASTM B505, ASTM B271, ASTM B30 OR EQUIVALENT. RINGS AND ROLLERS: SAE 52
12、100 STEEL PER AMS6440. 2. MIL-PRF-81322 OR MIL-PRF-23827 (TYPE I OR TYPE II). ALL BEARINGS SHALL BE PACKED WITH GREASE CONFORMING TO MIL-PRF-81322 UNLESS OTHERWISE SPECIFIED. ALL BEARINGS SHALL BE FILLED 80% MINIMUM WITH GREASE. IF MIL-PRF-23827 (TYPE I OR TYPE II) IS REQUIRED, ADD THE LETTER “G” (T
13、YPE I OR TYPE II) OR “H“ (TYPE I) OR “J” (TYPE II) AFTER THE MS28913 DASH NUMBER. MIL-PRF-23827 (TYPE I OR TYPE II) SHALL NOT BE USED WHERE TEMPERATURE EXCEEDS 250 F MAX. 3. RADIAL INTERNAL CLEARANCE: .0002 TO .0010. 4. FINISH: ZINC-NICKEL PLATED IN ACCORDANCE WITH AMS2417, TYPE 2, GRADE B OR CADMIU
14、M PLATED IN ACCORDANCE WITH AMS-QQ-P-416, TYPE I, CLASS 2, TO A THICKNESS OF .0003 TO .0006 INCHES. IF ZINC-NICKEL PLATING IS REQUIRED, ADD THE LETTER “E” TO THE END OF THE PART NUMBER AS SHOWN IN REQUIREMENT 9. 5. SURFACE ROUGHNESS: RACEWAYS 8 MICROINCHES Ra, ROLLERS 6 MICROINCHES Ra. ALL OTHER SUR
15、FACES 32 MICROINCHES Ra IN ACCORDANCE WITH ANSI/ASME B46.1. REMOVE BURRS AND SHARP EDGES. 6. DIMENSIONS IN INCHES UNLESS OTHERWISE SPECIFIED. 7. TOLERANCES: DECIMALS +.010 TO -.000, UNLESS OTHERWISE SPECIFIED. 8. DIMENSIONS TO BE MET AFTER PLATING. 9. EXAMPLE OF PART NUMBER MS28913 - 4C G E “E“ = (N
16、O CODE) CADMIUM PLATE OR ZINC-NICKEL PLATE “E“ = ZINC-NICKEL PLATE “G“ = (NO CODE) MIL-PRF-81322 GREASE “G“ = MIL-PRF-23827, Type I or Type II GREASE “H“ = MIL-PRF-23827, Type I GREASE “J“ = MIL-PRF-23827, Type II GREASE DASH NUMBER (SEE TABLE I) BASIC PART NUMBER 10. FOR DESIGN FEATURE PURPOSE, THI
17、S SPECIFICATION TAKES PRECEDENCE OVER PROCUREMENT DOCUMENTS REFERENCED HEREIN. 11. REFERENCED DOCUMENTS SHALL BE OF THE ISSUE IN EFFECT ON DATE OF INVITATION FOR BIDS. 12. SELF-ALIGNED TO 10 MAX. IN EITHER DIRECTION. 13. A CHANGE BAR (l) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER
18、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, INCLUDING TECHNICAL REVISIONS. CHANGE BARS AND (R) ARE NOT USED IN ORIGINAL PUBLICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY.
