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44348B — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

44348B: CUP,TAPERED ROLLER BEARING.

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 OVERALL, flange_width: 0.2188 INCHES NOMINAL IN, overall_width: 0.6875 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, FLANGED, backface_corner_radius: 0.0625 INCHES NOMINAL IN, flange_outside_diameter: 3.7023 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-151-8370, 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
44348B
NSN: 3110-00-151-8370
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_width0.2188 INCHES NOMINAL IN
overall_width0.6875 INCHES NOMINAL IN
style_designatorNORMAL ANGLE, FLANGED
backface_corner_radius0.0625 INCHES NOMINAL IN
flange_outside_diameter3.7023 INCHES NOMINAL IN
outer_ring_outside_diameter3.4843 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-151-8370
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 44348B · 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
•
FLANGE OUTSIDE DIAMETER: 3.7023 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE, FLANGED
•
BACKFACE CORNER RADIUS: 0.0625 INCHES NOMINAL IN
•
FLANGE WIDTH: 0.2188 INCHES NOMINAL IN
•
OUTER RING OUTSIDE DIAMETER: 3.4843 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
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
FLANGE OUTSIDE DIAMETER3.7023 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE, FLANGED
OVERALL WIDTH0.6875 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0625 INCHES NOMINAL IN
FLANGE WIDTH0.2188 INCHES NOMINAL IN
OUTER RING OUTSIDE DIAMETER3.4843 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 44348B?
44348B is a CUP,TAPERED ROLLER BEARING.
What is the NSN for 44348B?
44348B is cataloged in the U.S. Government catalog under NSN 3110-00-151-8370. 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.