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4255819 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

4255819: 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 capacity: 1.0 CUBIC CENTIMETERS, material: STEEL UNION, body_style: STRAIGHT SHAPE, EXTERNAL/INTERNAL COUPLING, ring_style: HOOKED WIRE, shell_type: SOLID, body_length: 2.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0360, 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
4255819
NSN: 3110-00-100-0360
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
capacity1.0 CUBIC CENTIMETERS
materialSTEEL UNION
body_styleSTRAIGHT SHAPE, EXTERNAL/INTERNAL COUPLING
ring_styleHOOKED WIRE
shell_typeSOLID
body_length2.000 INCHES NOMINAL IN
power_rating10.0 WATTS AVERAGE AND 5.0 KILOWATTS PEAK
usage_designINTERNAL
body_diameter5.968 INCHES NOMINAL IN
overall_width0.860 INCHES NOMINAL IN
terminal_typeTAB W/WIRE LEAD
inclosure_typeENCAPSULATED
NSN3110-00-100-0360
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 4255819 · 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
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
SUBSTITUTES & CROSS-REFERENCES 8
4255819-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
J0298Reference document
Same NSN cross-reference
Reference document — Secondary reference
40885Reference document
Same NSN cross-reference
Reference document — Secondary reference
2729Reference document
Same NSN cross-reference
Reference document — Secondary reference
96X2729Reference document
Same NSN cross-reference
Reference document — Secondary reference
61-882Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4255819?
4255819 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 4255819?
There are 8 known substitutes for 4255819: 4255819-7, J0298, 40885 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4255819?
4255819 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0360. 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.