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M10121 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

M10121: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include special_features: FOR USE ON TABLE,OPERATING,FIELD; MDL. E99-001, end_item_identification: 6530-00-142-9239, purchase_description_identification: 55732-M-10121.

This part is cataloged in the U.S. Government catalog under NSN 3110-01-330-8003, 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
M10121
NSN: 3110-01-330-8003
NIINs: 013308003, 013311661
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 55732 — ATLANTIC INDUSTRIES INC HARDEEVILLE SC (USA)
SPECIFICATIONS
special_featuresFOR USE ON TABLE,OPERATING,FIELD; MDL. E99-001
end_item_identification6530-00-142-9239
purchase_description_identification55732-M-10121
NSN3110-01-330-8003
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M10121 · 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
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PURCHASE DESCRIPTION IDENTIFICATION: 55732-M-10121
TECHNICAL CHARACTERISTICS
PURCHASE DESCRIPTION IDENTIFICATION55732-M-10121
SPECIAL FEATURESFOR USE ON TABLE,OPERATING,FIELD; MDL. E99-001
END ITEM IDENTIFICATION6530-00-142-9239
SUBSTITUTES & CROSS-REFERENCES 1
E99-333Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M10121?
M10121 is a BEARING,ROLLER,NEEDLE.
What parts can replace M10121?
There is 1 known substitute for M10121: E99-333. Substitute compatibility should be verified for your specific system.
What is the NSN for M10121?
M10121 is cataloged in the U.S. Government catalog under NSN 3110-01-330-8003. 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.