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449-432D — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

449-432D: 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: 1.3750 INCHES NOMINAL1.3750 INCHES NOMINAL IN, overall_width: 2.4376 INCHES NOMINAL2.4376 INCHES NOMINAL IN, style_designator: STRAIGHT BORE, DOUBLE CUP, SINGLE CONESSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, cone_corner_radius: 0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN, backface_corner_radius: 0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN, overall_outside_diameter: 3.7500 INCHES NOMINAL3.7500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-357-0154, 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
449-432D
NSN: 3110-01-357-0154
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
bore_diameter1.3750 INCHES NOMINAL1.3750 INCHES NOMINAL IN
overall_width2.4376 INCHES NOMINAL2.4376 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONESSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
cone_corner_radius0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN
backface_corner_radius0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN
overall_outside_diameter3.7500 INCHES NOMINAL3.7500 INCHES NOMINAL IN
NSN3110-01-357-0154
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 449-432D · 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
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONESSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
•
OVERALL OUTSIDE DIAMETER: 3.7500 INCHES NOMINAL3.7500 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN
•
BORE DIAMETER: 1.3750 INCHES NOMINAL1.3750 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
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONESSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
OVERALL WIDTH2.4376 INCHES NOMINAL2.4376 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER3.7500 INCHES NOMINAL3.7500 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN
CONE CORNER RADIUS0.0300 INCHES NOMINAL0.0300 INCHES NOMINAL IN
BORE DIAMETER1.3750 INCHES NOMINAL1.3750 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 449-432D?
449-432D is a BEARING,ROLLER,TAPERED.
What is the NSN for 449-432D?
449-432D is cataloged in the U.S. Government catalog under NSN 3110-01-357-0154. 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.