1、 AEROSPACE STANDARD BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA WIDE, DOUBLE ROW, INTERMEDIATE DUTY, CORROSION RESISTANT NITROGEN STEEL (CREN) AS27647/1 Copyright 2017 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted,
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3、DRESS: http:/www.sae.org ISSUED2017-02THIRD ANGLE PROJECTION CUSTODIAN: ACBG FEDERAL SUPPLY CLASS 3110 AS27647/1 SHEET 1 OF 4 PROCUREMENT SPECIFICATION: AS7949 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSXEOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDODQGHQJLneering sciences. The useof this repor
4、t is entirely voluntary, and its applicability andsuitability for any particularuse, includingany patent infringement arisingtherefrom,LVWKHVROHUHVSRQVLELOLWRIWKHXVHUSAE reviews eachtechnical reportatleast every fiveyears at whichtime it may berevised, reaffirmed, stabilized, or cancelled. SAE invit
5、es your written comments and suggestions.SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS27647/1 RATIONALE THIS STANDARD DEFINES A CORROSION RESISTANT NITROGEN STEEL (CREN) VERSION OF THE AS27647 AIRFRAME PULLEY BEARING SERIES. NOTICE THE C
6、OMPLETE REQUIREMENTS FOR PROCURING THE PRODUCT DESCRIBED HEREIN SHALL CONSIST OF THIS DOCUMENT AND THE LATEST ISSUE OF AS7949. FIGURE 1 - PART CONFIGURATION SHOWN WITH RELUBRICATION GROOVE FOR WITHOUT RELUBRIC$7,21*5229(20,77*,13$57180%(5 (SEE REQUIREMENT 5) AEROSPACE STANDARD AS27647/1 SHEET 2 OF 4
7、 BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA WIDE, DOUBLE ROW, INTERMEDIATE DUTY, CORROSION RESISTNAT NITROGEN STEEL (CREN) TABLE 1 - DIMENSIONS AND LOADS AS DASH NO. 8/ 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
8、1/ (A) SHOULDER DIAMETER INNER RING (APPROX) E 4/ C 3/ RADIAL LIMIT LOAD RATING LBS THRUST LIMIT LOAD RATING LBS 5/ 6/ RADIAL LOAD RATING (LB) FOR AVERAGE LIFE OF 10000 COMPLETE 90 CYCLES WEIGHT POUNDS (APPROX) CORNER CHAMFER X 45 7/ INNER RING BORE +.015 -.000 OUTER RING OD +.015 -.000 MAXIMUM STAR
9、TING TORQUE CASE I CASE II (IN_OZ) -4A .2500 .6250 .562 .500 .338 .005 .016 1400 500 1050 960 .02 1.0 -4 .2500 .7500 .875 .750 .372 .005 .016 2700 900 2070 1850 .04 1.0 -5 .3125 .8750 .938 .813 .466 .005 .016 5140 1600 2600 2320 .07 1.5 -6 .3750 1.0625 1.188 1.063 .570 .005 .016 8440 2600 4220 3740
10、12 2.5 -8 .5000 1.4375 1.500 1.375 .709 .005 .032 15520 4700 7610 6520 .29 2.5 1/ ALL DIMENSIONS TO BE MET AFTER SURFACE TREATMENT. 2/ OUT-OF-ROUND TOLERANCES: BORE: +.0002, -.0007; OUTER DIAMETER: +.0005, -.0010. 3/ A RADIUS GIVING APPROXIMATELY THE SAME GRIP FOR STAKING THE BEARING IN THE HOUSING
11、 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, THE RATINGS SHALL BE REDU
12、CED BY 20%. 7/ SPECIFIED LIMITS ARE FOR BEARINGS LUBRICATED WITH MIL-PRF-81322 GREASE. FOR BEARINGS LUBRICATED WITH MIL-PRF-23827 TYPE I GREASE, THE TORQUE LIMIT SHALL BE THE SPECIFIED VALUE IN THE TABLE MULTIPLIED BY 1.2. 8/ -4A AND -4 BALL RETAINER TYPE. REQUIREMENTS 1. MATERIAL: RINGS: CORROSION
13、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 AMS5925. 68),;IMUM WITH ZINC-NICKEL PLATING AND CRES BALLS PER AMS5880 OR AMS5618 BALL MATERIAL CODE (SEE REQUIREMENT 1) SURFACE TREATM
14、ENT CODE (SEE REQUIREMENT 6) LUBRICANT CODE (SEE REQUIREMENT 4) RELUBRICATION GROOVE (SEE REQUIREMENT 5) RADIAL INTERNAL CLEARANCE (SEE REQUIREMENT 8) $6$6+18MBER (SEE TABLE 1) AEROSPACE STANDARD NUMBER AEROSPACE STANDARD AS27647/1 SHEET 4 OF 4 BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA WIDE, DOU
15、BLE ROW, INTERMEDIATE DUTY, CORROSION RESISTNAT NITROGEN STEEL (CREN) NOTES NOTICE THIS DOCUMENT REFERENCES A PART WHICH CONTAINS CADMIUM AS A PLATING MATERIAL. CONSULT LOCAL OFFICIALS IF YOU HAVE QUESTIONS &21&(51,1*&$0,806 USE. 1. ALL DIMENSIONS ARE IN INCHES, UNLESS OTHERWISE SPECIFIED. 2. IN THE
16、 EVENT OF A CONFLICT BETWEEN THE TEXT OF THIS 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 C
17、ONVENIENCE 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, INCLUDING TECHNICAL REVISIONS. CHANGE BARS AND (R) ARE NOT USED IN ORIGINAL PUBLICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY.
