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Technical Data Sheet
PartsTable / COMPONENT / FF-B-187/03-55
FF-B-187/03-55 ✓ 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-187/03-55 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-439-2612, 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-187/03-55
NSN: 3110-00-439-2612
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFF-B-187/03-55
NSN3110-00-439-2612
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FF-B-187/03-55 · 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
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 2.2500 INCHES NOMINAL IN
•
CONE WIDTH: 1.2910 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STEEP ANGLE
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.2500 INCHES NOMINAL IN
CONE WIDTH1.2910 INCHES NOMINAL IN
SPECIAL FEATURESEXTRA CAPACITY; INCREASED COMPLEMENT OF ROLLERS; MODIFIED ROLLERS AND RETAINER
STYLE DESIGNATORSTEEP ANGLE
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
BT498Interchangeable
interchangeable cross-reference
interchangeable
1264091Interchangeable
interchangeable cross-reference
interchangeable
364969Interchangeable
interchangeable cross-reference
interchangeable
0604387Interchangeable
interchangeable cross-reference
interchangeable
43312Interchangeable
interchangeable cross-reference
interchangeable
9A43312Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-B-187/03-55?
FF-B-187/03-55 is a FF-B-187/03-55.
What parts can replace FF-B-187/03-55?
There are 24 known substitutes for FF-B-187/03-55: BT498, 1264091, 364969 and 21 more. Substitute compatibility should be verified for your specific system.
Is FF-B-187/03-55 still available?
FF-B-187/03-55 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026