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A40478 ✓ 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

CABLE ASSEMBLY,SPECIAL PURPOSE,E. Key specifications include material: STEEL CORROSION RESISTING, body_width: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, body_height: 0.185 INCHES MAXIMUM IN, body_length: 0.840 INCHES MAXIMUM IN, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING, inclosure_type: OPEN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-363-7114, 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
A40478
NSN: 3120-00-363-7114
FSC: 3120
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
body_width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
body_height0.185 INCHES MAXIMUM IN
body_length0.840 INCHES MAXIMUM IN
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeOPEN
overall_length72.5 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES SHANK END
first_end_styleOVAL
hardness_rating55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
inductance_typeFIXED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
NSN3120-00-363-7114
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A40478 · 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
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
583269Interchangeable
interchangeable cross-reference
interchangeable
N502P2220Interchangeable
interchangeable cross-reference
interchangeable
MS24692-252Interchangeable
interchangeable cross-reference
interchangeable
AF-800Interchangeable
interchangeable cross-reference
interchangeable
3S4745Interchangeable
interchangeable cross-reference
interchangeable
ARM-916Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A40478?
A40478 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E.
What parts can replace A40478?
There are 17 known substitutes for A40478: 583269, N502P2220, MS24692-252 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A40478?
A40478 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-363-7114. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026