PartsTable
Technical Data Sheet
J4491 ✓ 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 COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 932 OVERALL, body_length: 0.335 INCHES NOMINAL IN, corner_shape: SQUARE ALL CORNERS, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING, coil_form_type: SOLID SINGLE COMPONENT, inclosure_type: FULLY INCLOSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-678-8274, 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
J4491
NSN: 3120-00-678-8274
FSC: 3120
CAGE: 80837 — KYSOR/WESTRAN CORP AUSTIN TRAILER DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY 932 OVERALL
body_length0.335 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
coil_form_typeSOLID SINGLE COMPONENT
inclosure_typeFULLY INCLOSED
overall_length0.9688 INCHES MINIMUM AND 1.0312 INCHES MAXIMUM IN
quality_factor57 MINIMUM SINGLE COMPONENT SINGLE WINDING
mounting_methodTERMINAL SINGLE GROUP
overall_diameter0.136 INCHES MAXIMUM IN
special_featuresMAGNETICALLY SHIELDED CORE
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
NSN3120-00-678-8274
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: J4491 · 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
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
CORNER SHAPE: SQUARE ALL CORNERS
BODY INSIDE DIAMETER: 1.9050 INCHES MINIMUM AND 1.9100 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER: 2.0300 INCHES MINIMUM AND 2.0320 INCHES MAXIMUM IN
MATERIAL: COPPER ALLOY 932 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
CORNER SHAPESQUARE ALL CORNERS
BODY INSIDE DIAMETER1.9050 INCHES MINIMUM AND 1.9100 INCHES MAXIMUM IN
OVERALL LENGTH0.9688 INCHES MINIMUM AND 1.0312 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER2.0300 INCHES MINIMUM AND 2.0320 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 932 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
J4491Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-15305Interchangeable
interchangeable cross-reference
interchangeable
101321Interchangeable
interchangeable cross-reference
interchangeable
8379981Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J4491?
J4491 is a COIL,RADIO FREQUENCY.
What parts can replace J4491?
There are 4 known substitutes for J4491: J4491, MIL-C-15305, 101321 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J4491?
J4491 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-678-8274. This indicates validated use in U.S. government and defense supply chains.
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