PartsTable
Technical Data Sheet
MS21439-106 ✓ 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 bore_diameter: 0.3750 INCHES NOMINAL IN, alignment_type: RIGID, inner_ring_width: 1.0000 INCHES NOMINAL IN, outer_ring_width: 0.9400 INCHES NOMINAL IN, bearing_seal_type: CONTACT, surface_treatment: CHROMIUM OUTER RING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-217-2326, 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
MS21439-106
NSN: 3110-01-217-2326
FSC: 3110
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E50100 OR STEEL COMP E52100 OR STEEL COMP E51100 END PLATE
bore_diameter0.3750 INCHES NOMINAL IN
seal_quantity2
alignment_typeRIGID
inner_ring_width1.0000 INCHES NOMINAL IN
outer_ring_width0.9400 INCHES NOMINAL IN
bearing_seal_typeCONTACT
surface_treatmentCHROMIUM OUTER RING
lubrication_materialGREASE
standard_tolerance_designationAFBMA STD TOLERANCE FOR AIRFRAME NEEDLE BEARINGS
NSN3110-01-217-2326
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS21439-106 · 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
OUTER RING WIDTH: 0.9400 INCHES NOMINAL IN
LUBRICATION MATERIAL: GREASE
SEAL QUANTITY: 2
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR AIRFRAME NEEDLE BEARINGS
INNER RING WIDTH: 1.0000 INCHES NOMINAL IN
ALIGNMENT TYPE: RIGID
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SEAL TYPECONTACT
OUTER RING WIDTH0.9400 INCHES NOMINAL IN
SPECIAL FEATURESOIL HOLES AND OIL GROOVE IN INNER RING,NO OIL HOLES OR OIL GROOVE IN OUTER RING;NEEDLE BEARING STYLE:NO. 432 IN OLD FIIG A04400;ROLLER OUTSIDE DIA.:1.1250 IN. NOM.;ROLLER ELEMENT GROOVE QTY:2;RING ALIGNING:NOT INCLUDED;OTHER MATERIALS FOR END PLATE,INNER RING,OUTER RING AND ROLLER ARE:STEEL,QQ-S-700 OR STEEL,ASTM A304,A322 OR A331;OTHER MATERIAL FOR SEAL IS:PLASTIC,POLYAMIDE,L-P-410,TYPE 6/6 OR PLASTIC,ACETAL RESIN,L-P-392 OR PLASTIC,POLYESTER ELASTOMER IN
LUBRICATION MATERIALGREASE
SEAL QUANTITY2
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR AIRFRAME NEEDLE BEARINGS
INNER RING WIDTH1.0000 INCHES NOMINAL IN
ALIGNMENT TYPERIGID
BORE DIAMETER0.3750 INCHES NOMINAL IN
MATERIALSTEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E50100 OR STEEL COMP E52100 OR STEEL COMP E51100 ROLLER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MS21439-124Interchangeable
interchangeable cross-reference
interchangeable
MS21439-110Interchangeable
interchangeable cross-reference
interchangeable
AS21439Interchangeable
interchangeable cross-reference
interchangeable
MS21439-114Interchangeable
interchangeable cross-reference
interchangeable
MS21439-108Interchangeable
interchangeable cross-reference
interchangeable
AS39901Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21439-106?
MS21439-106 is a BEARING,ROLLER,NEEDLE.
What parts can replace MS21439-106?
There are 7 known substitutes for MS21439-106: MS21439-124, MS21439-110, AS21439 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21439-106?
MS21439-106 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-217-2326. This indicates validated use in U.S. government and defense supply chains.
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