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Technical Data Sheet
PartsTable / COMPONENT / MS21442-481
MS21442-481 ✓ 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 END PLATE, crown_radius: 30.0000 INCHES NOMINAL IN, bore_diameter: 1.0000 INCHES NOMINAL IN, alignment_type: RIGID, surface_finish: GROUND, inner_ring_width: 1.8125 INCHES NOMINAL 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 3110-01-446-6655, 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
MS21442-481
NSN: 3110-01-446-6655
FSC: 3110
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialSTEEL END PLATE
crown_radius30.0000 INCHES NOMINAL IN
bore_diameter1.0000 INCHES NOMINAL IN
seal_quantity2
alignment_typeRIGID
surface_finishGROUND
inner_ring_width1.8125 INCHES NOMINAL IN
outer_ring_width1.7500 INCHES NOMINAL IN
style_designatorTRACK ROLLER, NON-SEPARABLE
bearing_seal_typeCONTACT
features_providedLUBRICATION GROOVE AND LUBRICATION HOLE
surface_treatmentCADMIUM AND CHROMATE OR OXIDE OR CADMIUM INNER RING
NSN3110-01-446-6655
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS21442-481 · 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: 3.0000 INCHES NOMINAL IN
•
MATERIAL: STEEL ROLLER
•
LUBRICATION MATERIAL: GREASE
•
SEAL QUANTITY: 2
•
ALIGNMENT TYPE: RIGID
•
BEARING SEAL TYPE: CONTACT
•
INNER RING WIDTH: 1.8125 INCHES NOMINAL IN
•
CROWN RADIUS: 30.0000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER3.0000 INCHES NOMINAL IN
MATERIALSTEEL ROLLER
LUBRICATION MATERIALGREASE
SEAL QUANTITY2
ALIGNMENT TYPERIGID
BEARING SEAL TYPECONTACT
INNER RING WIDTH1.8125 INCHES NOMINAL IN
CROWN RADIUS30.0000 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
OUTER RING WIDTH1.7500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
AS21442Interchangeable
interchangeable cross-reference
interchangeable
MS21442-221Interchangeable
interchangeable cross-reference
interchangeable
AS39901Interchangeable
interchangeable cross-reference
interchangeable
MS21442-161Interchangeable
interchangeable cross-reference
interchangeable
MS21442-321Interchangeable
interchangeable cross-reference
interchangeable
803-6397359 REV A PC. NO. 6Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21442-481?
MS21442-481 is a BEARING,ROLLER,NEEDLE.
What parts can replace MS21442-481?
There are 6 known substitutes for MS21442-481: AS21442, MS21442-221, AS39901 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21442-481?
MS21442-481 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-446-6655. 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