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AS21443 — BEARING,BALL,AIRFRAME

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

AS21443: BEARING,BALL,AIRFRAME.

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL OUTER RING, bore_diameter: 0.3125 INCHES NOMINAL IN, load_direction: RADIAL, inner_ring_width: 0.6250 INCHES NOMINAL IN, outer_ring_width: 0.3750 INCHES NOMINAL IN, style_designator: SINGLE ROW INNER RING EXTENDED BOTH SIDES. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-226-8775, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AS21443
NSN: 3110-00-226-8775
NIINs: 002268775, 002273492, 002274589, 002770056, 002943948
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialSTEEL OUTER RING
bore_diameter0.3125 INCHES NOMINAL IN
seal_quantity2
load_directionRADIAL
inner_ring_width0.6250 INCHES NOMINAL IN
outer_ring_width0.3750 INCHES NOMINAL IN
style_designatorSINGLE ROW INNER RING EXTENDED BOTH SIDES
bearing_seal_typeCONTACT
surface_treatmentCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
lubrication_materialGREASE
overall_outside_diameter0.8750 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
NSN3110-00-226-8775
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AS21443 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
RETAINER FABRICATION METHOD: PRESSED
•
BEARING SEAL TYPE: CONTACT
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 0.5630 INCHES NOMINAL IN
•
STYLE DESIGNATOR: DOUBLE ROW
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE MATERIAL RESPONSE ALL EXTERNAL/EXPOSED METAL SURFACES
•
OVERALL OUTSIDE DIAMETER: 0.9375 INCHES NOMINAL IN
•
LOAD DIRECTION: ANGULAR
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.5630 INCHES NOMINAL IN
STYLE DESIGNATORDOUBLE ROW
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 2 FED SPEC SINGLE MATERIAL RESPONSE ALL EXTERNAL/EXPOSED METAL SURFACES
OVERALL OUTSIDE DIAMETER0.9375 INCHES NOMINAL IN
LOAD DIRECTIONANGULAR
SURFACE TREATMENTCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
SEAL QUANTITY2
SUBSTITUTES & CROSS-REFERENCES 3
PD5KFS428Reference document
Same NSN cross-reference
Reference document — Secondary reference
PD5KE6531Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS21443-5BGReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS21443?
AS21443 is a BEARING,BALL,AIRFRAME.
What parts can replace AS21443?
There are 3 known substitutes for AS21443: PD5KFS428, PD5KE6531, MS21443-5BG. Substitute compatibility should be verified for your specific system.
What is the NSN for AS21443?
AS21443 is cataloged in the U.S. Government catalog under NSN 3110-00-226-8775. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.