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419021 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

419021: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include end_item_identification: B-1B, general_characteristics_item_description: ALUMINUM ALLOY 2024; ANODIZE; 1.250 IN. DIA; 1.780 IN.

LG; USED ON 4820-01-182-9737 IN. This part is cataloged in the U.S. Government catalog under NSN 3110-00-293-9591, 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
419021
NSN: 3110-00-293-9591
NIINs: 002939591, 012280045
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 22907 — HELIGEAR ACQUISITION CO. DBA NORTHSTAR AEROSPACE, INC. (USA)
SPECIFICATIONS
end_item_identificationB-1B
general_characteristics_item_descriptionALUMINUM ALLOY 2024; ANODIZE; 1.250 IN. DIA; 1.780 IN. LG; USED ON 4820-01-182-9737 IN
NSN3110-00-293-9591
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 419021 · 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
•
LUBRICATION MATERIAL: GREASE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 55.00 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
LUBRICATION MATERIALGREASE
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
SHIELD QUANTITY2
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH13.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER55.00 MILLIMETERS NOMINAL MM
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
BORE SHAPESTRAIGHT
SUBSTITUTES & CROSS-REFERENCES 2
4773L06X1784CJReference document
Same NSN cross-reference
Reference document — Secondary reference
4773L06X1784EReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 419021?
419021 is a BEARING,BALL,ANNULAR.
What parts can replace 419021?
There are 2 known substitutes for 419021: 4773L06X1784CJ, 4773L06X1784E. Substitute compatibility should be verified for your specific system.
What is the NSN for 419021?
419021 is cataloged in the U.S. Government catalog under NSN 3110-00-293-9591. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.