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15994-31 — BEARING,PLAIN,SELF-ALIGNING

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

15994-31: BEARING,PLAIN,SELF-ALIGNING.

The BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: GRAPHITE LUBRICATION, bore_diameter: 1.4990 INCHES MINIMUM AND 1.5020 INCHES MAXIMUM IN, style_designator: WITH INSERT AND/OR LINER, inner_member_width: 2.5150 INCHES MINIMUM AND 2.5250 INCHES MAXIMUM IN, outer_member_width: 2.2500 INCHES NOMINAL IN, outer_member_outside_diameter: 3.4990 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-699-9070, 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
15994-31
NSN: 3120-00-699-9070
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 93019 — O & S ACQUISITION LLC DBA O & S AMERICA LLC (USA)
SPECIFICATIONS
materialGRAPHITE LUBRICATION
bore_diameter1.4990 INCHES MINIMUM AND 1.5020 INCHES MAXIMUM IN
style_designatorWITH INSERT AND/OR LINER
inner_member_width2.5150 INCHES MINIMUM AND 2.5250 INCHES MAXIMUM IN
outer_member_width2.2500 INCHES NOMINAL IN
outer_member_outside_diameter3.4990 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
NSN3120-00-699-9070
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 15994-31 · 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
•
INNER MEMBER WIDTH: 2.5150 INCHES MINIMUM AND 2.5250 INCHES MAXIMUM IN
•
OUTER MEMBER WIDTH: 2.2500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: WITH INSERT AND/OR LINER
•
BORE DIAMETER: 1.4990 INCHES MINIMUM AND 1.5020 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
OUTER MEMBER OUTSIDE DIAMETER: 3.4990 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INNER MEMBER WIDTH2.5150 INCHES MINIMUM AND 2.5250 INCHES MAXIMUM IN
OUTER MEMBER WIDTH2.2500 INCHES NOMINAL IN
STYLE DESIGNATORWITH INSERT AND/OR LINER
BORE DIAMETER1.4990 INCHES MINIMUM AND 1.5020 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
MATERIALGRAPHITE LUBRICATION
OUTER MEMBER OUTSIDE DIAMETER3.4990 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
N301Reference document
Same NSN cross-reference
Reference document — Secondary reference
3120006999070Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 15994-31?
15994-31 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace 15994-31?
There are 2 known substitutes for 15994-31: N301, 3120006999070. Substitute compatibility should be verified for your specific system.
What is the NSN for 15994-31?
15994-31 is cataloged in the U.S. Government catalog under NSN 3120-00-699-9070. 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.