PartsTable
Technical Data Sheet
Download PDF

2578665-001A — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

2578665-001A: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 7.300 INCHES MINIMUM AND 7.300 INCHES MINIMUM AND 7.310 INCHES MAXIMUM7.310 INCHES MAXIMUM IN, outside_diameter: 8.120 INCHES NOMINAL8.120 INCHES NOMINAL IN, style_designator: INTERNAL KEY, material_thickness: 0.318 INCHES MINIMUM AND 0.318 INCHES MINIMUM AND 0.321 INCHES MAXIMUM0.321 INCHES MAXIMUM IN, internal_key_quantity: 22. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-477-0044, 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
2578665-001A
NSN: 3120-00-477-0044
NIINs: 004770044, 004994538
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter7.300 INCHES MINIMUM AND 7.300 INCHES MINIMUM AND 7.310 INCHES MAXIMUM7.310 INCHES MAXIMUM IN
outside_diameter8.120 INCHES NOMINAL8.120 INCHES NOMINAL IN
style_designatorINTERNAL KEY
material_thickness0.318 INCHES MINIMUM AND 0.318 INCHES MINIMUM AND 0.321 INCHES MAXIMUM0.321 INCHES MAXIMUM IN
internal_key_quantity22
internal_straight_key_width0.350 INCHES MINIMUM AND 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM0.360 INCHES MAXIMUM IN
material_document_and_classificationQQ-C-390,ALLOY G5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key3.501 INCHES MINIMUM AND 3.501 INCHES MINIMUM AND 3.511 INCHES MAXIMUM3.511 INCHES MAXIMUM IN
NSN3120-00-477-0044
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2578665-001A · 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
SUBSTITUTES & CROSS-REFERENCES 1
2578655-001AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
Ready to buy 2578665-001A?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 2578665-001A?
2578665-001A is a BEARING,SLEEVE.
What parts can replace 2578665-001A?
There is 1 known substitute for 2578665-001A: 2578655-001A. Substitute compatibility should be verified for your specific system.
What is the NSN for 2578665-001A?
2578665-001A is cataloged in the U.S. Government catalog under NSN 3120-00-477-0044. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 2578665-001A

✓ 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.