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Technical Data Sheet
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A-3155 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

A-3155: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: SEAL,PLAIN ENCASED. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-245-0757, 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
A-3155
NSN: 3120-01-245-0757
NIINs: 012450757, 013008512, 013138655, 015819542
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 16288 — METSO MINERALS INDUSTRIES, INC. DBA BULK MATERIAL HANDLING (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencySEAL,PLAIN ENCASED
NSN3120-01-245-0757
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A-3155 · 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
•
FLANGE OUTSIDE DIAMETER: 3.0000 INCHES NOMINAL IN
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BODY OUTSIDE DIAMETER: 2.5030 INCHES MINIMUM AND 2.5040 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 2.0000 INCHES MINIMUM AND 2.0010 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.1230 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
FLANGE OUTSIDE DIAMETER3.0000 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER2.5030 INCHES MINIMUM AND 2.5040 INCHES MAXIMUM IN
OVERALL LENGTH2.1250 INCHES NOMINAL IN
BODY INSIDE DIAMETER2.0000 INCHES MINIMUM AND 2.0010 INCHES MAXIMUM IN
FLANGE WIDTH0.1230 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A-3155?
A-3155 is a BUSHING,SLEEVE.
What is the NSN for A-3155?
A-3155 is cataloged in the U.S. Government catalog under NSN 3120-01-245-0757. 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.