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Technical Data Sheet
PartsTable / COMPONENT / WS10998
WS10998 ✓ 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 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 overall_length: 1.0625 INCHES NOMINAL IN, special_features: ROLLER TYPE: SOLID, overall_outside_diameter: 2.2500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-158-8562, 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
WS10998
NSN: 3110-00-158-8562
FSC: 3110
CAGE: 51600 — REGAL BELOIT AMERICA, INC. DBA ROLLWAY BEARING (USA)
SPECIFICATIONS
overall_length1.0625 INCHES NOMINAL IN
special_featuresROLLER TYPE: SOLID
overall_outside_diameter2.2500 INCHES NOMINAL IN
NSN3110-00-158-8562
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: WS10998 · 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
•
OVERALL OUTSIDE DIAMETER: 2.2500 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)
OVERALL OUTSIDE DIAMETER2.2500 INCHES NOMINAL IN
OVERALL LENGTH1.0625 INCHES NOMINAL IN
SPECIAL FEATURESROLLER TYPE: SOLID
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
RT253-65-224Interchangeable
interchangeable cross-reference
interchangeable
K.M109.5331-00-291-7342Interchangeable
interchangeable cross-reference
interchangeable
725-70-224Interchangeable
interchangeable cross-reference
interchangeable
300217Interchangeable
interchangeable cross-reference
interchangeable
TAD1000TP16Interchangeable
interchangeable cross-reference
interchangeable
351-1724-330Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WS10998?
WS10998 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace WS10998?
There are 9 known substitutes for WS10998: RT253-65-224, K.M109.5331-00-291-7342, 725-70-224 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for WS10998?
WS10998 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-158-8562. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026