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MS21438-114 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

MS21438-114: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL INNER RING, bore_diameter: 0.8750 INCHES NOMINAL IN, alignment_type: SELF-ALIGNING, surface_finish: GROUND, inner_ring_width: 1.1250 INCHES NOMINAL IN, outer_ring_width: 1.0750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-411-3208, 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
MS21438-114
NSN: 3110-01-411-3208
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_diameter0.8750 INCHES NOMINAL IN
seal_quantity2
alignment_typeSELF-ALIGNING
surface_finishGROUND
inner_ring_width1.1250 INCHES NOMINAL IN
outer_ring_width1.0750 INCHES NOMINAL IN
style_designatorTRACK ROLLER, NON-SEPARABLE
bearing_seal_typeCONTACT
surface_treatmentCADMIUM END PLATE
lubrication_materialGREASE
self-alignment_locationEXTERNAL
NSN3110-01-411-3208
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS21438-114 · 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: CONTACT
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 1.0750 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: TRACK ROLLER, NON-SEPARABLE
•
ALIGNMENT TYPE: SELF-ALIGNING
•
SURFACE TREATMENT: CHROMIUM OUTER RING
TECHNICAL CHARACTERISTICS
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALGREASE
OUTER RING WIDTH1.0750 INCHES NOMINAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORTRACK ROLLER, NON-SEPARABLE
ALIGNMENT TYPESELF-ALIGNING
SURFACE TREATMENTCHROMIUM OUTER RING
SURFACE TREATMENTCADMIUM END PLATE
SURFACE TREATMENTCADMIUM INNER RING
SEAL QUANTITY2
SUBSTITUTES & CROSS-REFERENCES 2
AS21438Reference document
Same NSN cross-reference
Reference document — Secondary reference
10326694Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21438-114?
MS21438-114 is a BEARING,ROLLER,NEEDLE.
What parts can replace MS21438-114?
There are 2 known substitutes for MS21438-114: AS21438, 10326694. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21438-114?
MS21438-114 is cataloged in the U.S. Government catalog under NSN 3110-01-411-3208. 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.