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Technical Data Sheet
PartsTable / COMPONENT / 3B4478
3B4478 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The CIRCUIT CARD ASSEMBLY is a the manufacturer industrial component. Key specifications include overall_length: 1.0000 INCHES NOMINAL IN, special_features: ROLLER TYPE: SOLID, overall_outside_diameter: 1.1250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-4167, 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
3B4478
NSN: 3110-00-120-4167
FSC: 3110
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
overall_length1.0000 INCHES NOMINAL IN
special_featuresROLLER TYPE: SOLID
overall_outside_diameter1.1250 INCHES NOMINAL IN
NSN3110-00-120-4167
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3B4478 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL OUTSIDE DIAMETER: 1.1250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER1.1250 INCHES NOMINAL IN
SPECIAL FEATURESROLLER TYPE: SOLID
OVERALL LENGTH1.0000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
8461363Interchangeable
interchangeable cross-reference
interchangeable
31-8461363Interchangeable
interchangeable cross-reference
interchangeable
08461363Interchangeable
interchangeable cross-reference
interchangeable
MS35872-5Interchangeable
interchangeable cross-reference
interchangeable
NS4-10Interchangeable
interchangeable cross-reference
interchangeable
IND0CINInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3B4478?
3B4478 is a CIRCUIT CARD ASSEMBLY.
What parts can replace 3B4478?
There are 23 known substitutes for 3B4478: 8461363, 31-8461363, 08461363 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3B4478?
3B4478 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-4167. 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