PartsTable
Technical Data Sheet
PartsTable / COMPONENT / FF-B-171/21
FF-B-171/21 ✓ 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 FF-B-171/21 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 3110-00-156-5253, 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
FF-B-171/21
NSN: 3110-00-156-5253
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFF-B-171/21
NSN3110-00-156-5253
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FF-B-171/21 · 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
•
RETAINER FABRICATION METHOD: MACHINED
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
STYLE DESIGNATOR: COUNTERBORED OUTER RING, NON-SEPARABLE
•
MATERIAL: STEEL BALL
TECHNICAL CHARACTERISTICS (FLIS)
RETAINER FABRICATION METHODMACHINED
STANDARD TOLERANCE DESIGNATIONABEC NO.1
INTERNAL FIT-UP DESIGNATIONSTANDARD
STANDARD TOLERANCE DESIGNATIONABEC NO.1
STYLE DESIGNATORCOUNTERBORED OUTER RING, NON-SEPARABLE
MATERIALSTEEL BALL
MATERIALSTEEL INNER RING
MATERIALSTEEL INNER RING
MATERIALPLASTIC PHENOLIC RETAINER
STYLE DESIGNATORCOUNTERBORED OUTER RING, NON-SEPARABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
209RInterchangeable
interchangeable cross-reference
interchangeable
AA59625-109TABTUInterchangeable
interchangeable cross-reference
interchangeable
A-A-59625Interchangeable
interchangeable cross-reference
interchangeable
P9618566-1Interchangeable
interchangeable cross-reference
interchangeable
FFB171/21Y11A2EInterchangeable
interchangeable cross-reference
interchangeable
7211WNDUInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-B-171/21?
FF-B-171/21 is a FF-B-171/21.
What parts can replace FF-B-171/21?
There are 32 known substitutes for FF-B-171/21: 209R, AA59625-109TABTU, A-A-59625 and 29 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FF-B-171/21?
FF-B-171/21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-5253. 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