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305301 — CAPACITOR,FIXED,PLASTIC DIELECTR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

305301: CAPACITOR,FIXED,PLASTIC DIELECTR.

CAPACITOR,FIXED,PLASTIC DIELECTR. Key specifications include material: NICKEL ALLOY, bore_shape: STRAIGHT, body_height: 0.185 INCHES MAXIMUM IN, bore_diameter: 75.00 MILLIMETERS NOMINAL MM, overall_width: 45.0 MILLIMETERS NOMINAL MM, load_direction: RADIAL. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-144-8575, 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
305301
NSN: 3110-00-144-8575
NIINs: 001448575, 002223400, 012455131, 013281454
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)
SPECIFICATIONS
materialNICKEL ALLOY
bore_shapeSTRAIGHT
body_height0.185 INCHES MAXIMUM IN
bore_diameter75.00 MILLIMETERS NOMINAL MM
overall_width45.0 MILLIMETERS NOMINAL MM
load_directionRADIAL
overall_length2.370 INCHES NOMINAL IN
surface_finishGROUND
overall_diameter0.250 INCHES NOMINAL IN
special_featuresMATERIAL NICKEL COPPER ALLOY PER QQ-N-281 CLASS A
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
inclosure_materialGLASS AND METAL
NSN3110-00-144-8575
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 305301 · 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
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 190.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH45.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER190.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE DIAMETER75.00 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
415KReference document
Same NSN cross-reference
Reference document — Secondary reference
415SReference document
Same NSN cross-reference
Reference document — Secondary reference
543458Reference document
Same NSN cross-reference
Reference document — Secondary reference
3415Reference document
Same NSN cross-reference
Reference document — Secondary reference
6415CE1TX9Reference document
Same NSN cross-reference
Reference document — Secondary reference
415SYReference document
Same NSN cross-reference
Reference document — Secondary reference
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 305301?
305301 is a CAPACITOR,FIXED,PLASTIC DIELECTR.
What parts can replace 305301?
There are 8 known substitutes for 305301: 415K, 415S, 543458 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 305301?
305301 is cataloged in the U.S. Government catalog under NSN 3110-00-144-8575. 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.