PartsTable
Technical Data Sheet
PartsTable / COMPONENT / FF-B-171/31X12A2C
FF-B-171/31X12A2C ✓ 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-171/31X12A2C 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 3110-00-156-8153, 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-171/31X12A2C
NSN: 3110-00-156-8153
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFF-B-171/31X12A2C
NSN3110-00-156-8153
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FF-B-171/31X12A2C · 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
•
LOAD DIRECTION: ANGULAR
•
SURFACE FINISH: GROUND
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
CONTACT ANGLE: 25.0 DEGREES MINIMUM
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 134 TYPE AND 00 GRADE
•
STYLE DESIGNATOR: COUNTERBORED OUTER RING, NON-SEPARABLE
TECHNICAL CHARACTERISTICS (FLIS)
LOAD DIRECTIONANGULAR
SURFACE FINISHGROUND
STANDARD TOLERANCE DESIGNATIONABEC NO.1
CONTACT ANGLE25.0 DEGREES MINIMUM
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA134 TYPE AND 00 GRADE
STYLE DESIGNATORCOUNTERBORED OUTER RING, NON-SEPARABLE
CONTACT ANGLE25.0 DEGREES MINIMUM
BORE DIAMETER60.00 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER150.00 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
741-2Interchangeable
interchangeable cross-reference
interchangeable
GW810BS1Interchangeable
interchangeable cross-reference
interchangeable
949812-2Interchangeable
interchangeable cross-reference
interchangeable
3041-2Interchangeable
interchangeable cross-reference
interchangeable
16X7412Interchangeable
interchangeable cross-reference
interchangeable
BB21747Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-B-171/31X12A2C?
FF-B-171/31X12A2C is a FF-B-171/31X12A2C.
What parts can replace FF-B-171/31X12A2C?
There are 22 known substitutes for FF-B-171/31X12A2C: 741-2, GW810BS1, 949812-2 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FF-B-171/31X12A2C?
FF-B-171/31X12A2C is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-8153. 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