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34300-34479 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

34300-34479: BEARING,ROLLER,TAPERED.

The BEARING,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include bore_diameter: 3.0000 INCHES NOMINAL IN, cone_corner_radius: 0.0800 INCHES NOMINAL IN, cup_outside_diameter: 4.7812 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-151-9522, 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
34300-34479
NSN: 3110-00-151-9522
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
bore_diameter3.0000 INCHES NOMINAL IN
cone_corner_radius0.0800 INCHES NOMINAL IN
cup_outside_diameter4.7812 INCHES NOMINAL IN
NSN3110-00-151-9522
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 34300-34479 · 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
•
CUP OUTSIDE DIAMETER: 4.7812 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0800 INCHES NOMINAL IN
•
BORE DIAMETER: 3.0000 INCHES NOMINAL IN
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
CUP OUTSIDE DIAMETER4.7812 INCHES NOMINAL IN
CONE CORNER RADIUS0.0800 INCHES NOMINAL IN
BORE DIAMETER3.0000 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 1
DA12450Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 34300-34479?
34300-34479 is a BEARING,ROLLER,TAPERED.
What parts can replace 34300-34479?
There is 1 known substitute for 34300-34479: DA12450. Substitute compatibility should be verified for your specific system.
What is the NSN for 34300-34479?
34300-34479 is cataloged in the U.S. Government catalog under NSN 3110-00-151-9522. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.