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National Stock Number:
3110-00-970-2747
Federal Supply Class:
3110
National Item Identification Number:
009702747
Description:
BEARING,BALL,AIRFRAME
Detail:
A cylindrical item in which the inner or outer ring turns upon row(s) of hardened BALL, BEARING which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes BEARING, BALL, ANNULAR.
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Manufacturer Information:
| AAMKP4AE9106A | 21335 | TIMKEN CO | | C525KP4A | 81755 | LOCKHEED MARTIN CORPORATION | | KP4A20 | 38443 | SKF USA INC. | | MKP4AE9105 | 21335 | TIMKEN CO |
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Techincal Specification:
| BEARING SEAL TYPE | CONTACT | | BORE DIAMETER | 0.2500 INCHES NOMINAL | | INNER RING WIDTH | 0.2810 INCHES NOMINAL | | LOAD DIRECTION | RADIAL | | LUBRICATION MATERIAL | GREASE | | LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE | | OUTER RING WIDTH | 0.2190 INCHES NOMINAL | | OVERALL OUTSIDE DIAMETER | 0.7500 INCHES NOMINAL | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE SEAL | | MATERIAL | STEEL COMP 440C BALL | | MATERIAL | STEEL COMP 440C OUTER RING | | MATERIAL | STEEL COMP 440C INNER RING | | SEAL QUANTITY | 2 | | STANDARD TOLERANCE DESIGNATION | AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS | | SPECIAL FEATURES | RINGS AND BALLS MATERIAL MODIFIED BY ADDITION OF 4 PCT MOLYBDENUM,PRELUBRICATED WITH 40 TO 50 PCT SPECIFIED GREASE,RINGS AND BALLS HEAT STABILIZED TO 400 DEG F,MAX NO LOAD STARTING TORQUE 0.2720 IN. OZ.,RADIAL CLEARANCE 0.0001 IN. MIN TO 0.0004 IN. MAX | | STYLE DESIGNATOR | SINGLE ROW INNER RING EXTENDED BOTH SIDES |
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