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559391 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

559391: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include end_item_identification: HIGH-CAPACITY LINE-OF-SIGHT RADIO TERMINAL (HCLOS) AN/TRC-190. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-271-0208, 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
MRO→ MRO_GENERAL→ 559391
NSN: 3110-00-271-0208
NIINs: 002710208, 012587659
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 6L214 — BADGER FIRE PROTECTION INC (USA)
SPECIFICATIONS
end_item_identificationHIGH-CAPACITY LINE-OF-SIGHT RADIO TERMINAL (HCLOS) AN/TRC-190
NSN3110-00-271-0208
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 559391 · 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
•
BEARING SEAL TYPE: LABYRINTH
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 0.9375 INCHES NOMINAL IN
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SINGLE ROW BALL, NOT SELF-ALIGNING, INNER RING EXTENDS BOTH SIDES, WITH SETSCREW IN INNER RING, GREASE GROOVE AND SNAP RING ON OUTER RING
•
OVERALL OUTSIDE DIAMETER: 2.8340 INCHES MINIMUM AND 2.8346 INCHES MAXIMUM IN
•
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
TECHNICAL CHARACTERISTICS
BEARING SEAL TYPELABYRINTH
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.9375 INCHES NOMINAL IN
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORSINGLE ROW BALL, NOT SELF-ALIGNING, INNER RING EXTENDS BOTH SIDES, WITH SETSCREW IN INNER RING, GREASE GROOVE AND SNAP RING ON OUTER RING
OVERALL OUTSIDE DIAMETER2.8340 INCHES MINIMUM AND 2.8346 INCHES MAXIMUM IN
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
SUBSTITUTES & CROSS-REFERENCES 2
ER20Reference document
Same NSN cross-reference
Reference document — Secondary reference
ER2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 559391?
559391 is a BEARING,BALL,ANNULAR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 559391?
There are 2 known substitutes for 559391: ER20, ER2. Substitute compatibility should be verified for your specific system.
What is the NSN for 559391?
559391 is cataloged in the U.S. Government catalog under NSN 3110-00-271-0208. 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.