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05185B — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

05185B: 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 flange_width: 0.1094 INCHES NOMINAL IN, overall_width: 0.4375 INCHES NOMINAL IN, backface_corner_radius: 0.0625 INCHES NOMINAL IN, flange_outside_diameter: 2.0064 INCHES NOMINAL IN, outer_ring_outside_diameter: 1.8504 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-151-8459, 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
05185B
NSN: 3110-00-151-8459
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
flange_width0.1094 INCHES NOMINAL IN
overall_width0.4375 INCHES NOMINAL IN
backface_corner_radius0.0625 INCHES NOMINAL IN
flange_outside_diameter2.0064 INCHES NOMINAL IN
outer_ring_outside_diameter1.8504 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-151-8459
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 05185B · 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: 2.0064 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0625 INCHES NOMINAL IN
•
FLANGE WIDTH: 0.1094 INCHES NOMINAL IN
•
OUTER RING OUTSIDE DIAMETER: 1.8504 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
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 DIAMETER2.0064 INCHES NOMINAL IN
OVERALL WIDTH0.4375 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0625 INCHES NOMINAL IN
FLANGE WIDTH0.1094 INCHES NOMINAL IN
OUTER RING OUTSIDE DIAMETER1.8504 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
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 05185B?
05185B is a CUP,TAPERED ROLLER BEARING.
What is the NSN for 05185B?
05185B is cataloged in the U.S. Government catalog under NSN 3110-00-151-8459. 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.