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National Stock Number:
3110-01-498-5855
Federal Supply Class:
3110
National Item Identification Number:
014985855
Description:
BEARING,ROLLER,AIRFRAME
Detail:
A CYLINDRICAL ITEM IN WHICH THE INNER OR OUTER RING TURNS UPON ROW(S) OF HARDENED ROLLER, 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, ROLLER, CYLINDRICAL.
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Manufacturer Information:
| AS28913-8C | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| MATERIAL | STEEL COMP E52100 INNER RING | | STEEL COMP E52100 OUTER RING | | STEEL COMP 4140 RETAINER | | RUBBER SYNTHETIC ROLLER | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE ROLLER | | STYLE DESIGNATOR | CONCAVE ROLLERS, DOUBLE CLOSURE, SELF ALIGNING | | BORE DIAMETER | 0.4995 INCHES MINIMUM AND | | 0.5000 INCHES MAXIMUM | | OVERALL OUTSIDE DIAMETER | 1.6870 INCHES MINIMUM AND | | 1.6875 INCHES MAXIMUM | | OUTER RING WIDTH | 0.8070 INCHES MINIMUM AND | | 0.8120 INCHES MAXIMUM | | INNER RING WIDTH | 0.9995 INCHES MINIMUM AND | | 1.0000 INCHES MAXIMUM | | SURFACE TREATMENT | CADMIUM EXPOSED SURFACES AS MOUNTED | | LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE | | RETAINER FABRICATION METHOD | MACHINED | | SEAL QUANTITY | 2 | | BEARING SEAL TYPE | CONTACT | | SPECIAL FEATURES | INTERNAL RADIAL CLEARANCE .005 TO .025,OIL HOLES IN OIL GROOVE IN OD OF OUTER RING | | LUBRICATION MATERIAL | GREASE |
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