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Technical Data Sheet
PartsTable / COMPONENT / BB-8-4
BB-8-4 ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 0.3750 INCHES MINIMUM AND 0.3800 INCHES MAXIMUM IN, overall_width: 0.3271 INCHES MINIMUM AND 0.3291 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: UNGROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-011-1496, 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
BB-8-4
NSN: 3110-01-011-1496
FSC: 3110
CAGE: 28873 — ITW FOOD EQUIPMENT GROUP LLC DBA HOBART SERVICE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter0.3750 INCHES MINIMUM AND 0.3800 INCHES MAXIMUM IN
overall_width0.3271 INCHES MINIMUM AND 0.3291 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishUNGROUND
style_designatorSPLIT OUTER RING WITH BAND AND SOLID INNER RING; NON-SEPARABLE
lubrication_materialGREASE
overall_outside_diameter1.2812 INCHES MINIMUM AND 1.2862 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
lubrication_material_document_and_classificationDOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE
NSN3110-01-011-1496
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BB-8-4 · 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: 1.2812 INCHES MINIMUM AND 1.2862 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SPLIT OUTER RING WITH BAND AND SOLID INNER RING; NON-SEPARABLE
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
RETAINER FABRICATION METHOD: PRESSED
•
BORE SHAPE: STRAIGHT
•
LUBRICATION MATERIAL: GREASE
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: DOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER1.2812 INCHES MINIMUM AND 1.2862 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSPLIT OUTER RING WITH BAND AND SOLID INNER RING; NON-SEPARABLE
STANDARD TOLERANCE DESIGNATIONABEC NO.1
RETAINER FABRICATION METHODPRESSED
BORE SHAPESTRAIGHT
LUBRICATION MATERIALGREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONDOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE
LOAD DIRECTIONRADIAL
SURFACE FINISHUNGROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
8070Interchangeable
interchangeable cross-reference
interchangeable
BA70Interchangeable
interchangeable cross-reference
interchangeable
607Interchangeable
interchangeable cross-reference
interchangeable
8060Interchangeable
interchangeable cross-reference
interchangeable
C8070Interchangeable
interchangeable cross-reference
interchangeable
CG537UInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BB-8-4?
BB-8-4 is a BEARING,BALL,ANNULAR.
What parts can replace BB-8-4?
There are 12 known substitutes for BB-8-4: 8070, BA70, 607 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BB-8-4?
BB-8-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-011-1496. 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