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25Z421 ✓ 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: COPPER ALLOY RETAINER, alignment_type: RIGID, surface_finish: GROUND, retainer_fabrication_method: PRESSED, thrust_directional_capability_designation: SINGLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-554-3790, 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
25Z421
NSN: 3110-00-554-3790
FSC: 3110
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY RETAINER
alignment_typeRIGID
surface_finishGROUND
retainer_fabrication_methodPRESSED
thrust_directional_capability_designationSINGLE
NSN3110-00-554-3790
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 25Z421 · 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
•
ALIGNMENT TYPE: RIGID
•
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
•
RETAINER FABRICATION METHOD: PRESSED
•
SURFACE FINISH: GROUND
•
MATERIAL: COPPER ALLOY RETAINER
TECHNICAL CHARACTERISTICS (FLIS)
ALIGNMENT TYPERIGID
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
RETAINER FABRICATION METHODPRESSED
SURFACE FINISHGROUND
MATERIALCOPPER ALLOY RETAINER
MATERIALSTEEL BALL
MATERIALSTEEL WASHER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
2755-0Interchangeable
interchangeable cross-reference
interchangeable
12007MInterchangeable
interchangeable cross-reference
interchangeable
86FT82Interchangeable
interchangeable cross-reference
interchangeable
6168Interchangeable
interchangeable cross-reference
interchangeable
2810K42Interchangeable
interchangeable cross-reference
interchangeable
061689Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25Z421?
25Z421 is a BEARING,BALL,ANNULAR.
What parts can replace 25Z421?
There are 14 known substitutes for 25Z421: 2755-0, 12007M, 86FT82 and 11 more. Substitute compatibility should be verified for your specific system.
Is 25Z421 still available?
25Z421 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