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Technical Data Sheet
PartsTable / COMPONENT / FFB187/01-669
FFB187/01-669 ✓ 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 FFB187/01-669 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4221, 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
FFB187/01-669
NSN: 3110-00-100-4221
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFFB187/01-669
NSN3110-00-100-4221
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FFB187/01-669 · 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
•
CUP WIDTH: 1.1875 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 6.0000 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP E52100 OR STEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 ROLLER
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
STANDOUT WIDTH: 0.3750 INCHES NOMINAL IN
•
CONE WIDTH: 1.4300 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CUP WIDTH1.1875 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER6.0000 INCHES NOMINAL IN
OVERALL WIDTH1.5625 INCHES NOMINAL IN
MATERIALSTEEL COMP E52100 OR STEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 ROLLER
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
STANDOUT WIDTH0.3750 INCHES NOMINAL IN
CONE WIDTH1.4300 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER3.7500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
21-421Interchangeable
interchangeable cross-reference
interchangeable
4FD0138Interchangeable
interchangeable cross-reference
interchangeable
4251668Interchangeable
interchangeable cross-reference
interchangeable
D72828Interchangeable
interchangeable cross-reference
interchangeable
952494-1Interchangeable
interchangeable cross-reference
interchangeable
C365-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFB187/01-669?
FFB187/01-669 is a FFB187/01-669.
What parts can replace FFB187/01-669?
There are 26 known substitutes for FFB187/01-669: 21-421, 4FD0138, 4251668 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FFB187/01-669?
FFB187/01-669 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4221. 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