PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MS21442-221
MS21442-221 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL ROLLER, bore_diameter: 0.3746 INCHES MINIMUM AND 0.3746 INCHES MINIMUM AND 0.3752 INCHES MAXIMUM0.3752 INCHES MAXIMUM IN, seal_quantity: 22, alignment_type: RIGIDRIGID, surface_finish: GROUNDGROUND, inner_ring_width: 0.8025 INCHES MINIMUM AND 0.8025 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM0.8175 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-144-1710, 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
MS21442-221
NSN: 3110-01-144-1710
FSC: 3110
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL ROLLER
bore_diameter0.3746 INCHES MINIMUM AND 0.3746 INCHES MINIMUM AND 0.3752 INCHES MAXIMUM0.3752 INCHES MAXIMUM IN
seal_quantity22
alignment_typeRIGIDRIGID
surface_finishGROUNDGROUND
inner_ring_width0.8025 INCHES MINIMUM AND 0.8025 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM0.8175 INCHES MAXIMUM IN
outer_ring_width0.7450 INCHES MINIMUM AND 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM0.7550 INCHES MAXIMUM IN
special_featuresOIL GROOVE AND OIL HOLES IN INNER RING; OIL GROOVE IN OUTER RING OPTIONALOIL GROOVE AND OIL HOLES IN INNER RING; OIL GROOVE IN OUTER RING OPTIONAL
style_designatorCAM ROLLER, HARDENED AND GROUND, NON-SEPARABLECAM ROLLER, HARDENED AND GROUND, NON-SEPARABLE
bearing_seal_typeCONTACTCONTACT
surface_treatmentOXIDE INNER RINGOXIDE INNER RING
lubrication_materialGREASEGREASE
NSN3110-01-144-1710
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS21442-221 · 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
•
OVERALL OUTSIDE DIAMETER: 1.3745 INCHES MINIMUM AND 1.3745 INCHES MINIMUM AND 1.3770 INCHES MAXIMUM1.3770 INCHES MAXIMUM IN
•
INNER RING WIDTH: 0.8025 INCHES MINIMUM AND 0.8025 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM0.8175 INCHES MAXIMUM IN
•
SEAL QUANTITY: 22
•
BEARING SEAL TYPE: CONTACTCONTACT
•
ALIGNMENT TYPE: RIGIDRIGID
•
OUTER RING WIDTH: 0.7450 INCHES MINIMUM AND 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM0.7550 INCHES MAXIMUM IN
•
LUBRICATION MATERIAL: GREASEGREASE
•
SURFACE FINISH: GROUNDGROUND
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER1.3745 INCHES MINIMUM AND 1.3745 INCHES MINIMUM AND 1.3770 INCHES MAXIMUM1.3770 INCHES MAXIMUM IN
INNER RING WIDTH0.8025 INCHES MINIMUM AND 0.8025 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM0.8175 INCHES MAXIMUM IN
SEAL QUANTITY22
BEARING SEAL TYPECONTACTCONTACT
ALIGNMENT TYPERIGIDRIGID
OUTER RING WIDTH0.7450 INCHES MINIMUM AND 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM0.7550 INCHES MAXIMUM IN
LUBRICATION MATERIALGREASEGREASE
SURFACE FINISHGROUNDGROUND
SPECIAL FEATURESOIL GROOVE AND OIL HOLES IN INNER RING; OIL GROOVE IN OUTER RING OPTIONALOIL GROOVE AND OIL HOLES IN INNER RING; OIL GROOVE IN OUTER RING OPTIONAL
SURFACE TREATMENTOXIDE INNER RINGOXIDE INNER RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
AS39901Interchangeable
interchangeable cross-reference
interchangeable
MS21442-161Interchangeable
interchangeable cross-reference
interchangeable
MS21442-321Interchangeable
interchangeable cross-reference
interchangeable
MS21442-481Interchangeable
interchangeable cross-reference
interchangeable
803-6397359 REV A PC. NO. 6Interchangeable
interchangeable cross-reference
interchangeable
AS21442Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21442-221?
MS21442-221 is a BEARING,ROLLER,NEEDLE.
What parts can replace MS21442-221?
There are 7 known substitutes for MS21442-221: AS39901, MS21442-161, MS21442-321 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21442-221?
MS21442-221 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-144-1710. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026