1、flIL-B-SL3/LL m 9999906 3845175 634 m 1 METRIC I MIL-B-913/11 5 March 1993 MILITARY SPECIFICATION SHEET BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, UNFLANGED, NON-SEPARABLE AND COUNTERBORED OUTER RING, CORROSION RESISTANT STEEL, ABEC 5P (METRIC) This s
2、pecification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and the issue of the following specification listed in that issue of the Department of Defense Index of
3、 Specifications and Standards (DODISS) specified in the solicitation: MIL-B-913. Pcl BEARING CONFIGURATION AMSC N/A FSC 3110 bISTRIBWfN ST=NT A. Appraved far pubhic release; distribueian is unlimited. , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
4、-NIL-E-SL3/LL 99999Ob L845L7b 570 W MIL-B-913/11 REQUIREMENTS: 1. Desian. All bearings described by this specification sheet shall be angular contact instrument bearings with an unflanged, non-separable and counterbored outer ring configuration. 2. Material. The ball and ring material for these bear
5、ings shall be corrosion resistant steel 440C (UNS S44004) conforming to QQ-S-763. 3. Tolerance class. The tolerance class shall be in accordance with the ABEC 5P tolerance tables of ANSI/AFBMA Standard 12.1. This tolerance class shall apply to all bearing sizes listed in Table I of this specificatio
6、n sheet. 4. Boundary dimensions. The boundary dimensions shall be as specified by the size code in Table I. 5. Retainer. The retainer shall be as specified by the part number designator (PN DES) in Table II. 6. Closures. Angular contact bearings shall be supplied with no closures. 7. Radial internal
7、 clearance or contact anule. The radial internal clearance or contact angle shall be as specified by the part number designator in Table IV. 8. Calibration. Calibration shall be as specified by the part number designator in Table V. 9. Performance Test. The performance test shall be as specified by
8、the part number designator in Table III. 10. Lubrication. 10.1 Lubricant. The lubricant shall be in accordance with the specification specified by the part number designator in Table VI. 10.2 Lubricant amount. The amount of lubricant shall be as specified by the part number designator in Table VII.
9、10.3. Barrier coatinq. Barrier coatinq shall I-no applied to bearings as specified by the part nuniber desiqnatcir iii lable VJ . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-913/11 9999906 1845177 407 W L Lubricant amount Lubricant 11. Part
10、 number. The part number consists of the following: Prefix letter M; general specification number; number of this specification sheet; and alpha numeric codes for size, retainer, performance test, radial internal clearance or contact angle, calibration, lubrication, and lubricant amount. EXAMPLE: M
11、913/ 1 N - P T Performance test Size code Specification sheet number M913/11BA724NPP indicates - Bore 2.0 mm; outside diameter 5.0 mm; width 1.5 mm; radius 0.08 mm; retainer phenolic laminate; performance test, startin than 14 but less than 20; no calibration; lubricant, preservative; lubricant amou
12、nt, in accordance with contact angle, greater 8 torque; MIL-P-197. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-SL3/LL 9999906 i8Y5L78 343 TABLE I. SIZE CODE AA BA BB CA CB DA DB EA EB EC FA FB FC GA GB HA HB HC JA JB KA KB LA MIL-B-913/11
13、 Boundary dimensions (millimeters). BORE d 1.5 2.0 2.0 2.5 2.5 3.0 3.0 4.0 4.0 4.0 5.0 5.0 5.0 6.0 6.0 7.0 7.0 7.0 8.0 8.0 9.0 9.0 10.0 OD D 5.0 5.0 6.0 6.0 7.0 7.0 10.0 9.0 13.0 16.0 11.0 16.0 19.0 13.0 19.0 14.0 19.0 22.0 19.0 22.0 20.0 26.0 26.0 WIDTH C 2.0 1.5 2.3 1.8 2.5 2.0 4.0 2.5 5.0 5.0 3.0
14、 5.0 6.0 3.5 6.0 3.5 6.0 7.0 6.0 7.0 6.0 8.0 8.0 RADIUS r i/ 2/ 0.15 0.08 0.08 0.08 0.15 0.10 0.15 0.10 0.20 0.30 0.15 0.30 0.30 0.15 0.30 0.15 0.30 0.30 0.30 0.30 0.30 0.30 0.30 - i/ Maximum shaft or housing fillet radius - 2/ Narrow face of rings shall clear a maximum that bearings corners will cl
15、ear. fillet radius of one-half the value listed. This value shall be a minimum of 0.05. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-B-933/33 m 999990b 3845179 28T m 1 2 MIL-B-913/11 TABLE II. Retainer. MANUFACTURERS STANDARD STARTING TORQUE
16、 & I I PN DES I TYPE I/ 2/ 3/ PTFE (Polytetrafluoroethylene). Phenolic or other porous non-metallic material. Phenolic or other porous non-metallic material saturated with lubricant. Selection of this choice dictates choosing manufacturers standard amount of lubricant. TABLE III. Performance Test. T
17、ABLE PTFE TOROIDS I/ PHENOLIC LAMINATE 2/ VACUUM IMPREGNATED PHENOLIC 3/ NON-POROUS, NON-METALLIC CROWN I PN DES I TYPE & Starting torque limits from table III of MIL-B-913. IV. Radial internal clearance or contact anule. PN DES I RANGES 2pm to 7pm (micrometers) 5pm to 12pm 14O OR LESS L/ GREATER TH
18、AN 14O BUT LESS THAN 20 I/ 12pm to 20pm GREATER THAN 20 I/ . 20pm to 28pm I/ Angular contact bearing designations only. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-B-S13/11 = 9999906 1845180 TT1 PN DES BORE INCREMENTS N NO CALIBRATION A NO
19、CALIBRATION B NO CALIBRATION C 2.50 D 2.50 E 2.50 F 1.25 G 1.25 H 1.25 OD INCREMENTS NO CALIBRATION 2.50 1.25 NO CALIBRATION 2.50 1.25 NO CALIBRATION 2.50 1.25 P A B C D E F G H J K PRESERVATIVE L/ MIL-L-6085 MIL-L-6085 2/ MIL-L-81846 MIL-L-81846 2/ MIL-G-23827 MIL-G-81322 MIL-G-81937 MIL-G-83261 MI
20、L-S-81087 MIL-S-81087 2/ 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-913/11 TABLE VII. Lubricant amount. PN DES QUANTITY PRESERVATIVE AMOUNT AS REQUIRED BY MIL-P-197 MANUFACTURERS STANDARD I/ OIL PER TABLE II of MIL-B-913 15% GREASE PER T
21、ABLE II of MIL-B-913 25% GREASE PER TABLE II of MIL-B-913 35% GREASE PER TABLE II of MIL-B-913 45% GREASE PER TABLE II of MIL-B-913 U Grease, fill to minimum 25%, maximum 40% of bearing void. Oil, immerse and then allow excess to drip off. The standard quantity of oil varies with each bearing size. Custodians: Army - AT Navy - AS Air Force - 99 Review activities: Navy - SH DLA - IS Preparing activity: Navy - AS Agent: DLS - IS (Project 3110-0813-11) User activities: Navy - MC Air Force - 84 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
