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Technical Data Sheet
PartsTable / COMPONENT / 173434
173434 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL, end_item_identification: WARPING CAPSTAN ASSY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-142-4388, 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
173434
NSN: 3110-00-142-4388
FSC: 3110
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialSTEEL
end_item_identificationWARPING CAPSTAN ASSY
NSN3110-00-142-4388
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 173434 · 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: 4.8125 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: NORMAL ANGLE
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
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OUTSIDE DIAMETER4.8125 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
OVERALL WIDTH1.1875 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
NF-4003-CInterchangeable
interchangeable cross-reference
interchangeable
7309BGInterchangeable
interchangeable cross-reference
interchangeable
11246Interchangeable
interchangeable cross-reference
interchangeable
9954Interchangeable
interchangeable cross-reference
interchangeable
3248Interchangeable
interchangeable cross-reference
interchangeable
22578Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 173434?
173434 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 173434?
There are 22 known substitutes for 173434: NF-4003-C, 7309BG, 11246 and 19 more. Substitute compatibility should be verified for your specific system.
Is 173434 still available?
173434 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