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Technical Data Sheet
PartsTable / COMPONENT / 8B4161
8B4161 ✓ 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

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: PLASTIC, inscription: EXCLAMATION POINT AND F, overall_height: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, overall_diameter: 0.590 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-365-1231, 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
8B4161
NSN: 3120-00-365-1231
FSC: 3120
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialPLASTIC
inscriptionEXCLAMATION POINT AND F
overall_height0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
overall_diameter0.590 INCHES NOMINAL IN
NSN3120-00-365-1231
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 8B4161 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
387802-00Interchangeable
interchangeable cross-reference
interchangeable
SK-187802Interchangeable
interchangeable cross-reference
interchangeable
6309Interchangeable
interchangeable cross-reference
interchangeable
975-1Interchangeable
interchangeable cross-reference
interchangeable
10385Interchangeable
interchangeable cross-reference
interchangeable
450LXInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8B4161?
8B4161 is a BUSHING,SLEEVE.
What parts can replace 8B4161?
There are 21 known substitutes for 8B4161: 387802-00, SK-187802, 6309 and 18 more. Substitute compatibility should be verified for your specific system.
Is 8B4161 still available?
8B4161 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026