PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 8R
8R ✓ 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

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include end_item_identification: NHA-MANIFOLD, UNDERWATER LIFT BAG, part_name_assigned_by_controlling_agency: TAPPO CHIUSURA. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-157-0619, 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
8R
NSN: 3110-00-157-0619
FSC: 3110
CAGE: 51588 — RBC BEARINGS INCORPORATED DIV WEST TRENTON DIVISION (USA)
SPECIFICATIONS
end_item_identificationNHA-MANIFOLD, UNDERWATER LIFT BAG
part_name_assigned_by_controlling_agencyTAPPO CHIUSURA
NSN3110-00-157-0619
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 8R · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
•
LUBRICATION MATERIAL: GREASE
•
INNER RING WIDTH: 0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
•
OUTER RING WIDTH: 0.5000 INCHES NOMINAL IN
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 (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
SPECIAL FEATURESOIL HOLE AND GROOVE IN INNER RING; PLATING ON EXPOSED SURFACES AS MOUNTED
LUBRICATION MATERIALGREASE
INNER RING WIDTH0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
OUTER RING WIDTH0.5000 INCHES NOMINAL IN
SPECIAL FEATURESOIL HOLE AND GROOVE IN INNER RING; PLATING ON EXPOSED SURFACES AS MOUNTED
RETAINER FABRICATION METHODPRESSED
FEATURES PROVIDEDLUBRICATION HOLE AND LUBRICATION GROOVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
2558Interchangeable
interchangeable cross-reference
interchangeable
SPECIALC0VERF0R8Interchangeable
interchangeable cross-reference
interchangeable
4S94793-101AInterchangeable
interchangeable cross-reference
interchangeable
MMM2558Interchangeable
interchangeable cross-reference
interchangeable
R2558Interchangeable
interchangeable cross-reference
interchangeable
SM-B-619160Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8R?
8R is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace 8R?
There are 23 known substitutes for 8R: 2558, SPECIALC0VERF0R8, 4S94793-101A and 20 more. Substitute compatibility should be verified for your specific system.
Is 8R still available?
8R 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