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Technical Data Sheet
PartsTable / COMPONENT / 550230
550230 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include end_item_identification: MK21 MOD1 DIVING HELMET. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0556, 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
550230
NSN: 3110-00-100-0556
FSC: 3110
CAGE: 58923 — ROPER INDUSTRIES INC ROPER PUMP CO DIV (USA)
SPECIFICATIONS
end_item_identificationMK21 MOD1 DIVING HELMET
NSN3110-00-100-0556
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 550230 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
103690Interchangeable
interchangeable cross-reference
interchangeable
1578-1Interchangeable
interchangeable cross-reference
interchangeable
26822Interchangeable
interchangeable cross-reference
interchangeable
1787815Interchangeable
interchangeable cross-reference
interchangeable
55437Interchangeable
interchangeable cross-reference
interchangeable
984735Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 550230?
550230 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 550230?
There are 27 known substitutes for 550230: 103690, 1578-1, 26822 and 24 more. Substitute compatibility should be verified for your specific system.
Is 550230 still available?
550230 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