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Technical Data Sheet
PartsTable / COMPONENT / T-621
T-621 ✓ 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,THRUST is a the manufacturer industrial component. Key specifications include material: STEEL WASHER, bore_diameter: 2.5000 INCHES NOMINAL IN, alignment_type: RIGID, overall_height: 1.0000 INCHES NOMINAL IN, surface_finish: GROUND, style_designator: FLAT RACE SURFACE, CYLINDRICAL ROLLERS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-1596, 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
T-621
NSN: 3110-00-198-1596
FSC: 3110
CAGE: 51600 — REGAL BELOIT AMERICA, INC. DBA ROLLWAY BEARING (USA)
SPECIFICATIONS
materialSTEEL WASHER
bore_diameter2.5000 INCHES NOMINAL IN
alignment_typeRIGID
overall_height1.0000 INCHES NOMINAL IN
surface_finishGROUND
style_designatorFLAT RACE SURFACE, CYLINDRICAL ROLLERS
overall_outside_diameter4.1250 INCHES NOMINAL IN
standard_tolerance_designationAFBMA STD TOLERANCE FOR THRUST BEARINGS
thrust_directional_capability_designationSINGLE
NSN3110-00-198-1596
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: T-621 · 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
•
SURFACE FINISH: GROUND
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR THRUST BEARINGS
•
ALIGNMENT TYPE: RIGID
•
STYLE DESIGNATOR: FLAT RACE SURFACE, CYLINDRICAL ROLLERS
•
MATERIAL: COPPER ALLOY OR STEEL RETAINER
•
OVERALL OUTSIDE DIAMETER: 4.1250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR THRUST BEARINGS
ALIGNMENT TYPERIGID
STYLE DESIGNATORFLAT RACE SURFACE, CYLINDRICAL ROLLERS
MATERIALCOPPER ALLOY OR STEEL RETAINER
OVERALL HEIGHT1.0000 INCHES NOMINAL IN
MATERIALSTEEL ROLLER
OVERALL OUTSIDE DIAMETER4.1250 INCHES NOMINAL IN
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
BORE DIAMETER2.5000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
536645Interchangeable
interchangeable cross-reference
interchangeable
108420Interchangeable
interchangeable cross-reference
interchangeable
VT3435Interchangeable
interchangeable cross-reference
interchangeable
SA387R-AS15Interchangeable
interchangeable cross-reference
interchangeable
712RAS15Interchangeable
interchangeable cross-reference
interchangeable
EFL309Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T-621?
T-621 is a BEARING,ROLLER,THRUST.
What parts can replace T-621?
There are 26 known substitutes for T-621: 536645, 108420, VT3435 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T-621?
T-621 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-1596. 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