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2045378 — GEARSHAFT,SPUR

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

2045378: GEARSHAFT,SPUR.

The GEARSHAFT,SPUR is a the manufacturer industrial component. Key specifications include gear_material: STEEL, overall_length: 1.050 INCHES NOMINAL IN, shaft_material: STEEL, shaft_largest_diameter: 0.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-490-1870, 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
2045378
NSN: 3120-00-490-1870
NIINs: 004901870, 010661319
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: U3887 — A P V CEMAK LTD (GBR)
SPECIFICATIONS
gear_materialSTEEL
overall_length1.050 INCHES NOMINAL IN
shaft_materialSTEEL
shaft_largest_diameter0.625 INCHES NOMINAL IN
NSN3120-00-490-1870
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2045378 · 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
•
BODY OUTSIDE DIAMETER: 1.3710 INCHES MINIMUM AND 1.3780 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 1.2270 INCHES MINIMUM AND 1.2330 INCHES MAXIMUM IN
•
LUBRICANT ACCOMMODATION STYLE: GROOVED SINGLE LOOP
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER1.3710 INCHES MINIMUM AND 1.3780 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH1.2500 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.2270 INCHES MINIMUM AND 1.2330 INCHES MAXIMUM IN
LUBRICANT ACCOMMODATION STYLEGROOVED SINGLE LOOP
SUBSTITUTES & CROSS-REFERENCES 1
035-0036-00Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2045378?
2045378 is a GEARSHAFT,SPUR.
What parts can replace 2045378?
There is 1 known substitute for 2045378: 035-0036-00. Substitute compatibility should be verified for your specific system.
What is the NSN for 2045378?
2045378 is cataloged in the U.S. Government catalog under NSN 3120-00-490-1870. 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.