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MEL-50 — HEATING ELEMENT,ELECTRICAL,NONIM

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

MEL-50: HEATING ELEMENT,ELECTRICAL,NONIM.

HEATING ELEMENT,ELECTRICAL,NONIM. Key specifications include special_features: HEATING ELEMENT USED ON 50JS HEAT PUMP UNIT, end_item_identification: NSN 1925-01-509-7013 TUGBOAT. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-450-1905, 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
MEL-50
NSN: 3120-00-450-1905
NIINs: 004501905, 015291089
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 24975 — PRESTOLITE ELECTRIC INC (USA)
SPECIFICATIONS
special_featuresHEATING ELEMENT USED ON 50JS HEAT PUMP UNIT
end_item_identificationNSN 1925-01-509-7013 TUGBOAT
NSN3120-00-450-1905
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MEL-50 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
FLANGE OUTSIDE DIAMETER: 0.8100 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.6900 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
•
BODY INSIDE DIAMETER: 0.5625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
FLANGE OUTSIDE DIAMETER0.8100 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.6900 INCHES NOMINAL IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
OVERALL LENGTH0.7500 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.5625 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
3120PL0650811Reference document
Same NSN cross-reference
Reference document — Informative reference only
3120004501905Reference 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 MEL-50?
MEL-50 is a HEATING ELEMENT,ELECTRICAL,NONIM.
What parts can replace MEL-50?
There are 2 known substitutes for MEL-50: 3120PL0650811, 3120004501905. Substitute compatibility should be verified for your specific system.
What is the NSN for MEL-50?
MEL-50 is cataloged in the U.S. Government catalog under NSN 3120-00-450-1905. 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.