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Technical Data Sheet
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FFB187/01-643 — Technical Data Sheet

✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL OVERALL, cup_width: 1.1875 INCHES NOMINAL IN, cone_width: 1.4300 INCHES NOMINAL IN, bore_diameter: 3.5000 INCHES NOMINAL IN, overall_width: 1.5625 INCHES NOMINAL IN, standout_width: 0.3750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-1468, 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
FFB187/01-643
NSN: 3110-00-198-1468
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.1875 INCHES NOMINAL IN
cone_width1.4300 INCHES NOMINAL IN
bore_diameter3.5000 INCHES NOMINAL IN
overall_width1.5625 INCHES NOMINAL IN
standout_width0.3750 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.2500 INCHES NOMINAL IN
backface_corner_radius0.1300 INCHES NOMINAL IN
overall_outside_diameter6.0000 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 4
NSN3110-00-198-1468
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FFB187/01-643 · 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
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
VERIFIED SUBSTITUTES & CROSS-REFERENCES 37
493Interchangeable
interchangeable cross-reference
interchangeable
BA291UInterchangeable
interchangeable cross-reference
interchangeable
45305PPInterchangeable
interchangeable cross-reference
interchangeable
55605Interchangeable
interchangeable cross-reference
interchangeable
G170-4Interchangeable
interchangeable cross-reference
interchangeable
A-A-59641Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFB187/01-643?
FFB187/01-643 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace FFB187/01-643?
There are 37 known substitutes for FFB187/01-643: 493, BA291U, 45305PP and 34 more. Substitute compatibility should be verified for your specific system.
Is FFB187/01-643 still available?
FFB187/01-643 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: September 2026