PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 310.031
310.031 ✓ 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 310.031 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-228-6202, 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
310.031
NSN: 3120-01-228-6202
FSC: 3120
CAGE: 54366 — MARVCO TOOL & MANUFACTURING (USA)
SPECIFICATIONS
Part Number310.031
NSN3120-01-228-6202
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 310.031 · 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 5
310031Interchangeable
interchangeable cross-reference
interchangeable
78404Interchangeable
interchangeable cross-reference
interchangeable
944089Interchangeable
interchangeable cross-reference
interchangeable
90096-002 ITEM 11Interchangeable
interchangeable cross-reference
interchangeable
7082208Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 310.031?
310.031 is a 310.031.
What parts can replace 310.031?
There are 5 known substitutes for 310.031: 310031, 78404, 944089 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 310.031?
310.031 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-228-6202. 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