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2122345 — BEARING UNIT,PLAIN

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

2122345: BEARING UNIT,PLAIN.

The BEARING UNIT,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, bore_diameter: 0.3125 INCHES NOMINAL IN, housing_width: 1.625 INCHES NOMINAL IN, shaft_end_type: OPEN, flange_thickness: 0.250 INCHES NOMINAL IN, special_features: TWO HOLES-10-24NC-3B 0.1562 IN. DRILL; FOUR HOLES 0.1562 IN.

DIA IN. This part is cataloged in the U.S. Government catalog under NSN 3130-01-319-2498, 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
2122345
NSN: 3130-01-319-2498
FSC: 3130 — Bearings, Mounted
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
bore_diameter0.3125 INCHES NOMINAL IN
housing_width1.625 INCHES NOMINAL IN
shaft_end_typeOPEN
flange_thickness0.250 INCHES NOMINAL IN
special_featuresTWO HOLES-10-24NC-3B 0.1562 IN. DRILL; FOUR HOLES 0.1562 IN. DIA IN
surface_treatmentPHOSPHATE MANGANESE OVERALL
mounting_hole_typeROUND, UNTHREADED
mounting_hole_diameter0.3437 INCHES NOMINAL IN
assembly_overall_length2.687 INCHES NOMINAL IN
material_document_and_classificationASTM A575 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationDOD-P-16232,TYPE M,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN3130-01-319-2498
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2122345 · 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
•
ASSEMBLY OVERALL LENGTH: 2.687 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: DOD-P-16232,TYPE M,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FLANGE THICKNESS: 0.250 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: ROUND, UNTHREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A575 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MOUNTING HOLE DIAMETER: 0.3437 INCHES NOMINAL IN
•
HOUSING WIDTH: 1.625 INCHES NOMINAL IN
•
SHAFT END TYPE: OPEN
TECHNICAL CHARACTERISTICS
ASSEMBLY OVERALL LENGTH2.687 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDOD-P-16232,TYPE M,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
FLANGE THICKNESS0.250 INCHES NOMINAL IN
MOUNTING HOLE TYPEROUND, UNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A575 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MOUNTING HOLE DIAMETER0.3437 INCHES NOMINAL IN
HOUSING WIDTH1.625 INCHES NOMINAL IN
SHAFT END TYPEOPEN
SPECIAL FEATURESTWO HOLES-10-24NC-3B 0.1562 IN. DRILL; FOUR HOLES 0.1562 IN. DIA IN
SURFACE TREATMENTPHOSPHATE MANGANESE OVERALL
OTHER ITEMS IN FSC 3130 — Bearings, Mounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3130-00-001-5118 3130-00-001-5137 3130-00-001-6585 3130-00-003-0422 3130-00-003-0455 3130-00-003-0794 3130-00-003-2802 3130-00-003-9535
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2122345?
2122345 is a BEARING UNIT,PLAIN.
What is the NSN for 2122345?
2122345 is cataloged in the U.S. Government catalog under NSN 3130-01-319-2498. 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.