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550042 — CAPACITOR,FIXED,ELECTROLYTIC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

550042: CAPACITOR,FIXED,ELECTROLYTIC.

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: STEEL COMP M50 OUTER RING, bore_shape: STRAIGHT, bore_diameter: 0.9843 INCHES NOMINAL IN, contact_angle: 22.5 DEGREES NOMINAL, overall_width: 0.4724 INCHES NOMINAL IN, load_direction: ANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-374-1326, 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
MRO→ MRO_GENERAL→ 550042
NSN: 3110-00-374-1326
NIINs: 003741326, 010876926, 014609798
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 43991 — FAG BEARINGS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP M50 OUTER RING
bore_shapeSTRAIGHT
bore_diameter0.9843 INCHES NOMINAL IN
contact_angle22.5 DEGREES NOMINAL
overall_width0.4724 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
special_features3 SLOTS EQUALLY SPACED IN EACH INNER RING HALF
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
end_item_identificationUSED ON VHF PRC 1088 PRODUCT LINE
overall_outside_diameter1.8504 INCHES NOMINAL IN
retainer_fabrication_methodMACHINED
NSN3110-00-374-1326
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 550042 · 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
•
RETAINER FABRICATION METHOD: MACHINED
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 1.8504 INCHES NOMINAL IN
•
BORE SHAPE: STRAIGHT
•
CONTACT ANGLE: 22.5 DEGREES NOMINAL
•
LOAD DIRECTION: ANGULAR
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
RETAINER FABRICATION METHODMACHINED
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH0.4724 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER1.8504 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
CONTACT ANGLE22.5 DEGREES NOMINAL
LOAD DIRECTIONANGULAR
SPECIAL FEATURES3 SLOTS EQUALLY SPACED IN EACH INNER RING HALF
STANDARD TOLERANCE DESIGNATIONABEC NO.5
SUBSTITUTES & CROSS-REFERENCES 1
364968-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 550042?
550042 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 550042?
There is 1 known substitute for 550042: 364968-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 550042?
550042 is cataloged in the U.S. Government catalog under NSN 3110-00-374-1326. 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.