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81558 — BEARING HALF SET,SLEEVE

✓ Government record, cited
Jumbo · BALL BEARING
PRODUCT OVERVIEW

81558: BEARING HALF SET,SLEEVE.

The BEARING HALF SET,SLEEVE is a Jumbo industrial component. This part is cataloged in the U.S. Government catalog under NSN 3120-00-341-7995, 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
81558
NSN: 3120-00-341-7995
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 13446 — PERKINS ENGINES INC (USA)
SPECIFICATIONS
Part Number81558
ManufacturerJumbo
NSN3120-00-341-7995
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 81558 · Jumbo ⚠ 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 5
676869Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
31126381Reference document
Same NSN cross-reference
Reference document — Secondary reference
31126391Reference document
Same NSN cross-reference
Reference document — Secondary reference
31126361Reference document
Same NSN cross-reference
Reference document — Secondary reference
31126371Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 81558?
81558 is a BEARING HALF SET,SLEEVE manufactured by Jumbo.
What parts can replace 81558?
There are 5 known substitutes for 81558: 676869, 31126381, 31126391 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81558?
81558 is cataloged in the U.S. Government catalog under NSN 3120-00-341-7995. 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.