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Technical Data Sheet
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1928021 — Technical Data Sheet

✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include overall_length: 0.1540 INCHES MINIMUM AND 0.1640 INCHES MAXIMUM IN, special_features: INTERNAL FLANGE LEFT END AND CENTER, body_outside_diameter: 0.7750 INCHES MINIMUM AND 0.7800 INCHES MAXIMUM IN, interior_flange_hole_diameter: 0.6320 INCHES MINIMUM AND 0.6370 INCHES MAXIMUM IN, left_internal_flange_hole_diameter: 0.5630 INCHES MINIMUM AND 0.5680 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System under NSN 3120-00-888-6630, 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
1928021
NSN: 3120-00-888-6630
FSC: 3120
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
overall_length0.1540 INCHES MINIMUM AND 0.1640 INCHES MAXIMUM IN
special_featuresINTERNAL FLANGE LEFT END AND CENTER
body_outside_diameter0.7750 INCHES MINIMUM AND 0.7800 INCHES MAXIMUM IN
interior_flange_hole_diameter0.6320 INCHES MINIMUM AND 0.6370 INCHES MAXIMUM IN
left_internal_flange_hole_diameter0.5630 INCHES MINIMUM AND 0.5680 INCHES MAXIMUM IN
NSN3120-00-888-6630
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 1928021 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BODY OUTSIDE DIAMETER: 0.7750 INCHES MINIMUM AND 0.7800 INCHES MAXIMUM IN
•
INTERIOR FLANGE HOLE DIAMETER: 0.6320 INCHES MINIMUM AND 0.6370 INCHES MAXIMUM IN
•
LEFT INTERNAL FLANGE HOLE DIAMETER: 0.5630 INCHES MINIMUM AND 0.5680 INCHES MAXIMUM 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
OVERALL LENGTH0.1540 INCHES MINIMUM AND 0.1640 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.7750 INCHES MINIMUM AND 0.7800 INCHES MAXIMUM IN
SPECIAL FEATURESINTERNAL FLANGE LEFT END AND CENTER
INTERIOR FLANGE HOLE DIAMETER0.6320 INCHES MINIMUM AND 0.6370 INCHES MAXIMUM IN
LEFT INTERNAL FLANGE HOLE DIAMETER0.5630 INCHES MINIMUM AND 0.5680 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
633574InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
FF151InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8-1049-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
272SC186InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
TMT-99-2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
90-2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1928021?
1928021 is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace 1928021?
There are 32 known substitutes for 1928021: 633574, FF151, 8-1049-1 and 29 more. Substitute compatibility should be verified for your specific system.
Is 1928021 still available?
1928021 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: September 2026