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8909A390-001 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

8909A390-001: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include bore_diameter: 1.3780 INCHES NOMINAL IN, outer_ring_width: 1.1300 INCHES NOMINAL IN, style_designator: COUNTERBORED OUTER RING, NON-SEPARABLE, overall_outside_diameter: 4.0000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-451-1989, 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
8909A390-001
NSN: 3110-01-451-1989
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 20722 — THE ENTWISTLE COMPANY LLC (USA)
SPECIFICATIONS
bore_diameter1.3780 INCHES NOMINAL IN
outer_ring_width1.1300 INCHES NOMINAL IN
style_designatorCOUNTERBORED OUTER RING, NON-SEPARABLE
overall_outside_diameter4.0000 INCHES NOMINAL IN
NSN3110-01-451-1989
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 8909A390-001 · 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
•
OUTER RING WIDTH: 1.1300 INCHES NOMINAL IN
•
STYLE DESIGNATOR: COUNTERBORED OUTER RING, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 4.0000 INCHES NOMINAL IN
•
BORE DIAMETER: 1.3780 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTER RING WIDTH1.1300 INCHES NOMINAL IN
STYLE DESIGNATORCOUNTERBORED OUTER RING, NON-SEPARABLE
OVERALL OUTSIDE DIAMETER4.0000 INCHES NOMINAL IN
BORE DIAMETER1.3780 INCHES NOMINAL 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 1
MG307FFZReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8909A390-001?
8909A390-001 is a BEARING,BALL,ANNULAR.
What parts can replace 8909A390-001?
There is 1 known substitute for 8909A390-001: MG307FFZ. Substitute compatibility should be verified for your specific system.
What is the NSN for 8909A390-001?
8909A390-001 is cataloged in the U.S. Government catalog under NSN 3110-01-451-1989. 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.