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12286821 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

12286821: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include bore_shape: STRAIGHT, bore_diameter: 2.5588 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN, overall_width: 0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN, load_direction: ANGULAR, surface_finish: GROUND, features_provided: SNAP RING-GROOVE MOUNTING. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-078-6004, 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
12286821
NSN: 3110-01-078-6004
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
bore_shapeSTRAIGHT
bore_diameter2.5588 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN
overall_width0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN
load_directionANGULAR
surface_finishGROUND
features_providedSNAP RING-GROOVE MOUNTING
overall_outside_diameter3.9367 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN
NSN3110-01-078-6004
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 12286821 · 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
•
SURFACE FINISH: GROUND
•
OVERALL OUTSIDE DIAMETER: 3.9367 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN
•
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: ANGULAR
•
BORE DIAMETER: 2.5588 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISHGROUND
OVERALL WIDTH0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER3.9367 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING
BORE SHAPESTRAIGHT
LOAD DIRECTIONANGULAR
BORE DIAMETER2.5588 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 3
3110010786004Reference document
Same NSN cross-reference
Reference document — Informative reference only
3-300-222-01Reference document
Same NSN cross-reference
Reference document — Secondary reference
AAV9113-6-MSRA1378Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12286821?
12286821 is a BEARING,BALL,ANNULAR.
What parts can replace 12286821?
There are 3 known substitutes for 12286821: 3110010786004, 3-300-222-01, AAV9113-6-MSRA1378. Substitute compatibility should be verified for your specific system.
What is the NSN for 12286821?
12286821 is cataloged in the U.S. Government catalog under NSN 3110-01-078-6004. 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.