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Technical Data Sheet
PartsTable / COMPONENT / BBFN55
BBFN55 ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 55.0 MILLIMETERS NOMINAL MM, overall_width: 13.0 MILLIMETERS NOMINAL MM, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-012-7232, 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
BBFN55
NSN: 3110-01-012-7232
FSC: 3110
CAGE: A0202 — S.C.D. SOCIETA' COSTRUZIONE DRUENTOSPA (ITA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter55.0 MILLIMETERS NOMINAL MM
overall_width13.0 MILLIMETERS NOMINAL MM
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter80.0 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
NSN3110-01-012-7232
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BBFN55 · 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 SHAPE: STRAIGHT
•
SURFACE FINISH: GROUND
•
BORE DIAMETER: 55.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
RETAINER FABRICATION METHOD: PRESSED
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
BORE DIAMETER55.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
OVERALL OUTSIDE DIAMETER80.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
3311Interchangeable
interchangeable cross-reference
interchangeable
14138A14274Interchangeable
interchangeable cross-reference
interchangeable
2768DInterchangeable
interchangeable cross-reference
interchangeable
10873KInterchangeable
interchangeable cross-reference
interchangeable
1227TInterchangeable
interchangeable cross-reference
interchangeable
1227T4311Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BBFN55?
BBFN55 is a BEARING,BALL,ANNULAR.
What parts can replace BBFN55?
There are 32 known substitutes for BBFN55: 3311, 14138A14274, 2768D and 29 more. Substitute compatibility should be verified for your specific system.
Is BBFN55 still available?
BBFN55 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026