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Technical Data Sheet
PartsTable / COMPONENT / 730359-1
730359-1 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

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: 2.7500 INCHES NOMINAL IN, bore_diameter: 4.5000 INCHES NOMINAL IN, overall_width: 3.6250 INCHES NOMINAL IN, standout_width: 0.4375 INCHES NOMINAL IN, special_features: W/SPACER,HOLE AND GROVE IN CUP. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2473, 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
730359-1
NSN: 3110-00-198-2473
FSC: 3110
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width2.7500 INCHES NOMINAL IN
bore_diameter4.5000 INCHES NOMINAL IN
overall_width3.6250 INCHES NOMINAL IN
standout_width0.4375 INCHES NOMINAL IN
special_featuresW/SPACER,HOLE AND GROVE IN CUP
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0320 INCHES NOMINAL IN
overall_outside_diameter7.0000 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-198-2473
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 730359-1 · 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
•
STANDOUT WIDTH: 0.4375 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
CUP WIDTH: 2.7500 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
OVERALL OUTSIDE DIAMETER: 7.0000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES
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 (FLIS)
STANDOUT WIDTH0.4375 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
CUP WIDTH2.7500 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
SPECIAL FEATURESW/SPACER,HOLE AND GROVE IN CUP
OVERALL OUTSIDE DIAMETER7.0000 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
OVERALL WIDTH3.6250 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0320 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
73-1346Interchangeable
interchangeable cross-reference
interchangeable
GP4252Interchangeable
interchangeable cross-reference
interchangeable
00254Interchangeable
interchangeable cross-reference
interchangeable
230329AInterchangeable
Same NIIN cross-reference
interchangeable
13207E3095Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 730359-1?
730359-1 is a BEARING,ROLLER,TAPERED.
What parts can replace 730359-1?
There are 5 known substitutes for 730359-1: 73-1346, GP4252, 00254 and 2 more. Substitute compatibility should be verified for your specific system.
Is 730359-1 still available?
730359-1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026