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5821028 — HOUSING,BEARING UNIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

5821028: HOUSING,BEARING UNIT.

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, bore_diameter: 0.6270 INCHES NOMINAL IN, flange_thickness: 0.072 INCHES NOMINAL IN, housing_diameter: 1.400 INCHES NOMINAL IN, style_designator: FLANGE BLOCK, surface_treatment: ANODIZE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3130-01-327-8041, 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
5821028
NSN: 3130-01-327-8041
FSC: 3130 — Bearings, Mounted
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
bore_diameter0.6270 INCHES NOMINAL IN
flange_thickness0.072 INCHES NOMINAL IN
housing_diameter1.400 INCHES NOMINAL IN
style_designatorFLANGE BLOCK
surface_treatmentANODIZE OVERALL
mounting_hole_typeROUND, UNTHREADED
mounting_hole_diameter0.205 INCHES NOMINAL IN
assembly_overall_length0.385 INCHES NOMINAL IN
end_item_identificationAFTERBODY SECTION,TORPEDO MK50
material_document_and_classificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625,TYPE 1A,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A
NSN3130-01-327-8041
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 5821028 · 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
•
ASSEMBLY OVERALL LENGTH: 0.385 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE 1A,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A
•
FLANGE THICKNESS: 0.072 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: ROUND, UNTHREADED
•
STYLE DESIGNATOR: FLANGE BLOCK
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MOUNTING HOLE DIAMETER: 0.205 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE OVERALL
TECHNICAL CHARACTERISTICS
ASSEMBLY OVERALL LENGTH0.385 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1A,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A
FLANGE THICKNESS0.072 INCHES NOMINAL IN
MOUNTING HOLE TYPEROUND, UNTHREADED
STYLE DESIGNATORFLANGE BLOCK
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MOUNTING HOLE DIAMETER0.205 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE OVERALL
END ITEM IDENTIFICATIONAFTERBODY SECTION,TORPEDO MK50
BORE DIAMETER0.6270 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3130 — Bearings, Mounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3130-00-001-5118 3130-00-001-5137 3130-00-001-6585 3130-00-003-0422 3130-00-003-0455 3130-00-003-0794 3130-00-003-2802 3130-00-003-9535
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5821028?
5821028 is a HOUSING,BEARING UNIT.
What is the NSN for 5821028?
5821028 is cataloged in the U.S. Government catalog under NSN 3130-01-327-8041. 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.