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Technical Data Sheet
PartsTable / COMPONENT / FFB187/01-TYPE ABMA 28521
FFB187/01-TYPE ABMA 28521 ✓ 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 FFB187/01-TYPE ABMA 28521 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0565, 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-TYPE ABMA 28521
NSN: 3110-00-100-0565
FSC: 3110
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFFB187/01-TYPE ABMA 28521
NSN3110-00-100-0565
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FFB187/01-TYPE ABMA 28521 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
OUTSIDE DIAMETER: 3.6250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
BACKFACE CORNER RADIUS: 0.0312 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.7813 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OUTSIDE DIAMETER3.6250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
BACKFACE CORNER RADIUS0.0312 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
069013Interchangeable
interchangeable cross-reference
interchangeable
30147Interchangeable
interchangeable cross-reference
interchangeable
55023-1Interchangeable
interchangeable cross-reference
interchangeable
285-21Interchangeable
interchangeable cross-reference
interchangeable
3-582416-0Interchangeable
interchangeable cross-reference
interchangeable
RWR84S1000FMInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFB187/01-TYPE ABMA 28521?
FFB187/01-TYPE ABMA 28521 is a FFB187/01-TYPE ABMA 28521.
What parts can replace FFB187/01-TYPE ABMA 28521?
There are 19 known substitutes for FFB187/01-TYPE ABMA 28521: 069013, 30147, 55023-1 and 16 more. Substitute compatibility should be verified for your specific system.
Is FFB187/01-TYPE ABMA 28521 still available?
FFB187/01-TYPE ABMA 28521 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