PartsTable
Technical Data Sheet
PartsTable / COMPONENT / FF-B-187/8
FF-B-187/8 ✓ 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-187/8 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 3110-00-120-1612, 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-187/8
NSN: 3110-00-120-1612
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFF-B-187/8
NSN3110-00-120-1612
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FF-B-187/8 · 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
•
BORE DIAMETER: 2.7559 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STANDOUT WIDTH: 0.2188 INCHES NOMINAL IN
•
CUP WIDTH: 2.1250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES, NON-ADJUSTABLE
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER2.7559 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDOUT WIDTH0.2188 INCHES NOMINAL IN
OVERALL WIDTH2.5626 INCHES NOMINAL IN
CUP WIDTH2.1250 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, NON-ADJUSTABLE
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
SPECIAL FEATURESOPERATING TEMPERATURE NORT TO EXCEED 121 DEG C/250 DEG F; OIL HOLE AND GROOVE IN CUP DEGC
BACKFACE CORNER RADIUS0.0310 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
NA569-563DInterchangeable
interchangeable cross-reference
interchangeable
A-A-59656Interchangeable
interchangeable cross-reference
interchangeable
68C01086Interchangeable
interchangeable cross-reference
interchangeable
K60-199AInterchangeable
interchangeable cross-reference
interchangeable
K60-199Interchangeable
interchangeable cross-reference
interchangeable
GGG-C-755Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-B-187/8?
FF-B-187/8 is a FF-B-187/8.
What parts can replace FF-B-187/8?
There are 20 known substitutes for FF-B-187/8: NA569-563D, A-A-59656, 68C01086 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FF-B-187/8?
FF-B-187/8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-1612. 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