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730359-3 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

730359-3: 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 material: STEEL OVERALL, cup_width: 2.0395 INCHES NOMINAL IN, bore_diameter: 2.5000 INCHES NOMINAL IN, overall_width: 3.0625 INCHES NOMINAL IN, standout_width: 0.5115 INCHES NOMINAL IN, special_features: HOLE AND GROOVE IN CUP W/SPACER. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-151-9552, 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
730359-3
NSN: 3110-00-151-9552
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width2.0395 INCHES NOMINAL IN
bore_diameter2.5000 INCHES NOMINAL IN
overall_width3.0625 INCHES NOMINAL IN
standout_width0.5115 INCHES NOMINAL IN
special_featuresHOLE AND GROOVE IN CUP W/SPACER
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
cone_corner_radius0.0920 INCHES NOMINAL IN
backface_corner_radius0.0620 INCHES NOMINAL IN
overall_outside_diameter5.5000 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-151-9552
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 730359-3 · 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 WIDTH: 2.0395 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
•
OVERALL OUTSIDE DIAMETER: 5.5000 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0920 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.5115 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 WIDTH2.0395 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
OVERALL WIDTH3.0625 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER5.5000 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0620 INCHES NOMINAL IN
CONE CORNER RADIUS0.0920 INCHES NOMINAL IN
STANDOUT WIDTH0.5115 INCHES NOMINAL IN
SPECIAL FEATURESHOLE AND GROOVE IN CUP W/SPACER
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.5000 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 2
NP70904AReference document
Same NSN cross-reference
Reference document — Secondary reference
SG2048Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 730359-3?
730359-3 is a BEARING,ROLLER,TAPERED.
What parts can replace 730359-3?
There are 2 known substitutes for 730359-3: NP70904A, SG2048. Substitute compatibility should be verified for your specific system.
What is the NSN for 730359-3?
730359-3 is cataloged in the U.S. Government catalog under NSN 3110-00-151-9552. 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.