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Technical Data Sheet
PartsTable / COMPONENT / 12308231
12308231 ✓ 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 BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY INNER MEMBER, bore_diameter: 0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN, style_designator: WITHOUT INSERT OR LINER, inner_member_width: 0.4640 INCHES MINIMUM AND 0.4690 INCHES MAXIMUM IN, outer_member_width: 0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN, end_item_identification: 2350-01-048-5920. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-136-4886, 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
12308231
NSN: 3120-01-136-4886
FSC: 3120
CAGE: 97613 — SARGENT AEROSPACE & DEFENSE, LLC DBA KAHR BEARINGS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY INNER MEMBER
bore_diameter0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
style_designatorWITHOUT INSERT OR LINER
inner_member_width0.4640 INCHES MINIMUM AND 0.4690 INCHES MAXIMUM IN
outer_member_width0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
end_item_identification2350-01-048-5920
outer_member_outside_diameter0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
NSN3120-01-136-4886
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 12308231 · 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
•
OUTER MEMBER WIDTH: 0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY INNER MEMBER
•
STYLE DESIGNATOR: WITHOUT INSERT OR LINER
•
OUTER MEMBER OUTSIDE DIAMETER: 0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
•
INNER MEMBER WIDTH: 0.4640 INCHES MINIMUM AND 0.4690 INCHES MAXIMUM IN
•
BORE DIAMETER: 0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTER MEMBER WIDTH0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY INNER MEMBER
MATERIALSTEEL BODY
STYLE DESIGNATORWITHOUT INSERT OR LINER
OUTER MEMBER OUTSIDE DIAMETER0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
INNER MEMBER WIDTH0.4640 INCHES MINIMUM AND 0.4690 INCHES MAXIMUM IN
END ITEM IDENTIFICATION2350-01-048-5920
BORE DIAMETER0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
36-8-1Interchangeable
interchangeable cross-reference
interchangeable
HASB-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12308231?
12308231 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace 12308231?
There are 2 known substitutes for 12308231: 36-8-1, HASB-5. Substitute compatibility should be verified for your specific system.
What is the NSN for 12308231?
12308231 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-136-4886. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026