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National Stock Number:
3120-21-914-1871
Federal Supply Class:
3120
National Item Identification Number:
219141871
Description:
ROLLER,LINEAR-ROTARY MOTION
Detail:
A cylindrical body having a centrally located hole to accommodate a pin or shaft for attachment to a push rod guide, yoke, rocker arm, turntable, or rail. The item provides a rolling contact with the face of a valve stem, or the lobes of a cam ring or camshaft on engines, fuel injection pumps, latches, turntables, parallel bearing surfaces requiring a roller support, and the like. Excludes BEARING, ROLLER, CYLINDRICAL; ROLLER, ELECTRICAL SWITCH; and friction bearings. See also CAM FOLLOWER, NEEDLE BEARING.
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Manufacturer Information:
| 33312 | 3AA35 | RACER MACHINERY INTERNATIONAL INC. | | A-33312 | 3AA35 | RACER MACHINERY INTERNATIONAL INC. |
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Techincal Specification:
| BORE INSIDE DIAMETER | 0.4057 INCHES MINIMUM AND 0.4067 INCHES MAXIMUM | | CASEHARDENING INDICATOR | CASEHARDENED | | CHAMFER/RADIUS OF INSIDE CORNER | 0.0200 INCH CHAMFER/RADIUS OF INSIDE CORNER BY 45.0 DEGREES | | CHAMFER/RADIUS OF OUTSIDE CORNER | 0.0200 INCH CHAMFER/RADIUS OF OUTSIDE CORNER BY 45.0 DEGREES | | FACE WIDTH | 0.339 INCHES MINIMUM AND 0.341 INCHES MAXIMUM | | MATERIAL | STEEL | | METALLIC HARDNESS RATING | 50.0 MINIMUM ROCKWELL C AND 62.0 MAXIMUM ROCKWELL C | | OUTSIDE DIAMETER | 0.9960 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM | | SPECIAL FEATURES | 16.0 MICROINCHES SURFACE FINISH OUTSIDE FACES OF ROLLER; 125.0 MICROINCHES SURFACE FINISH OUTSIDE DIAMETER SURFACE OF BODY; FACES MUST BE PARALLEL AND FLAT WITHIN 0.0002 INCHES; DRAWN AND HARDENED | | STYLE DESIGNATOR | PLAIN |
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