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77940A — RING,BEARING,INNER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

77940A: RING,BEARING,INNER.

The RING,BEARING,INNER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.7820 INCHES MINIMUM AND 0.7870 INCHES MAXIMUM IN, style_designator: SOLID INNER RACE, JOURNAL AND NEEDLE. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-232-0781, 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
77940A
NSN: 3110-00-232-0781
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 02101 — OECO, LLC DBA PACIFIC SCIENTIFIC OECO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.7820 INCHES MINIMUM AND 0.7870 INCHES MAXIMUM IN
style_designatorSOLID INNER RACE, JOURNAL AND NEEDLE
NSN3110-00-232-0781
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 77940A · 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
•
STYLE DESIGNATOR: SOLID INNER RACE, JOURNAL AND NEEDLE
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSOLID INNER RACE, JOURNAL AND NEEDLE
OVERALL WIDTH0.7820 INCHES MINIMUM AND 0.7870 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
77940Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 77940A?
77940A is a RING,BEARING,INNER.
What parts can replace 77940A?
There is 1 known substitute for 77940A: 77940. Substitute compatibility should be verified for your specific system.
What is the NSN for 77940A?
77940A is cataloged in the U.S. Government catalog under NSN 3110-00-232-0781. 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.