PartsTable
Technical Data Sheet
PartsTable / COMPONENT / FF-B-187/03-46
FF-B-187/03-46 ✓ 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-187/03-46 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 3110-00-980-5621, 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-187/03-46
NSN: 3110-00-980-5621
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFF-B-187/03-46
NSN3110-00-980-5621
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FF-B-187/03-46 · 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
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: STEEP ANGLE
•
CONE WIDTH: 1.2910 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
RETAINER FABRICATION METHOD: PRESSED
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
STYLE DESIGNATORSTEEP ANGLE
CONE WIDTH1.2910 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
RETAINER FABRICATION METHODPRESSED
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
SPECIAL FEATURESMODIFIED ROLLERS AND RETAINER
END ITEM IDENTIFICATIONHIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
BORE DIAMETER2.1250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
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
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-B-187/03-46?
FF-B-187/03-46 is a FF-B-187/03-46.
What parts can replace FF-B-187/03-46?
There are 26 known substitutes for FF-B-187/03-46: BT498, 1264091, 364969 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FF-B-187/03-46?
FF-B-187/03-46 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-980-5621. 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