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111221PC523 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

111221PC523: CUP,TAPERED ROLLER BEARING.

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 special_features: W/ PROVISION FOR MOUNTING. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-398-9129, 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
111221PC523
NSN: 4820-00-398-9129
FSC: 4820 — Valves, Nonpowered
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
special_featuresW/ PROVISION FOR MOUNTING
NSN4820-00-398-9129
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 111221PC523 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESW/ PROVISION FOR MOUNTING
SUBSTITUTES & CROSS-REFERENCES 2
354BReference document
Same NSN cross-reference
Reference document — Secondary reference
111222PC523Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 111221PC523?
111221PC523 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 111221PC523?
There are 2 known substitutes for 111221PC523: 354B, 111222PC523. Substitute compatibility should be verified for your specific system.
What is the NSN for 111221PC523?
111221PC523 is cataloged in the U.S. Government catalog under NSN 4820-00-398-9129. 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.