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8998466 — BEARING UNIT,PLAIN

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

8998466: BEARING UNIT,PLAIN.

The BEARING UNIT,PLAIN is a the manufacturer industrial component. Key specifications include lens_type: ACHROMATIC, design_type: GENERAL PURPOSE, carrying_case: NOT PROVIDED, focusing_type: ADJUSTABLE, magnification: 0.7X NOMINAL AND 3.0X NOMINAL, objective_type: DRY. This part is cataloged in the U.S.

Government catalog under NSN 3130-00-822-8733, 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
8998466
NSN: 3130-00-822-8733
FSC: 3130 — Bearings, Mounted
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
lens_typeACHROMATIC
design_typeGENERAL PURPOSE
carrying_caseNOT PROVIDED
focusing_typeADJUSTABLE
magnification0.7X NOMINAL AND 3.0X NOMINAL
objective_typeDRY
nosepiece_designFIXED
eyepiece_quantity1
body_tube_analyzerNOT INCLUDED
body_tube_positionINCLINED
objective_quantity1
eyepiece_designatorWIDE FIELD
NSN3130-00-822-8733
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 8998466 · 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
522B1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 8998466?
8998466 is a BEARING UNIT,PLAIN.
What parts can replace 8998466?
There is 1 known substitute for 8998466: 522B1. Substitute compatibility should be verified for your specific system.
What is the NSN for 8998466?
8998466 is cataloged in the U.S. Government catalog under NSN 3130-00-822-8733. 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.