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Technical Data Sheet
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FF-B-187/3 — 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, cone_width: 1.2910 INCHES NOMINAL IN, bore_diameter: 2.1250 INCHES NOMINAL IN, overall_width: 0.6875 INCHES NOMINAL IN, outside_diameter: 3.1250 INCHES NOMINAL IN, special_features: MODIFIED ROLLERS AND RETAINER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0264, 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-187/3
NSN: 3110-00-100-0264
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width1.2910 INCHES NOMINAL IN
bore_diameter2.1250 INCHES NOMINAL IN
overall_width0.6875 INCHES NOMINAL IN
outside_diameter3.1250 INCHES NOMINAL IN
special_featuresMODIFIED ROLLERS AND RETAINER
style_designatorSTEEP ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0630 INCHES NOMINAL IN
end_item_identificationHIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0264
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FF-B-187/3 · 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 38
17164Interchangeable
interchangeable cross-reference
interchangeable
DAK95-12AInterchangeable
interchangeable cross-reference
interchangeable
AS81969Interchangeable
interchangeable cross-reference
interchangeable
M81969/8-09Interchangeable
interchangeable cross-reference
interchangeable
9804Interchangeable
interchangeable cross-reference
interchangeable
TE8453Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-B-187/3?
FF-B-187/3 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace FF-B-187/3?
There are 38 known substitutes for FF-B-187/3: 17164, DAK95-12A, AS81969 and 35 more. Substitute compatibility should be verified for your specific system.
Is FF-B-187/3 still available?
FF-B-187/3 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