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Technical Data Sheet
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6306ZZ — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

6306ZZ: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include end_item_identification: PX-301K1 SERIES A.C. GENERATOR, part_name_assigned_by_controlling_agency: BALL BEARING.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-144-8642, 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
6306ZZ
NSN: 3110-00-144-8642
NIINs: 001448642, 015889782
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 52676 — SKF USA INC. (USA)
SPECIFICATIONS
end_item_identificationPX-301K1 SERIES A.C. GENERATOR
part_name_assigned_by_controlling_agencyBALL BEARING
NSN3110-00-144-8642
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 6306ZZ · 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
•
LUBRICATION MATERIAL: GREASE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 72.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
LUBRICATION MATERIALGREASE
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
SHIELD QUANTITY2
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH19.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER72.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
SUBSTITUTES & CROSS-REFERENCES 10
386P436G01Reference document
Same NSN cross-reference
Reference document — Secondary reference
306FFReference document
Same NSN cross-reference
Reference document — Secondary reference
M1089-213-129BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
306SFFSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
210726-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
SDD/3016/2310AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6306ZZ?
6306ZZ is a BEARING,BALL,ANNULAR.
What parts can replace 6306ZZ?
There are 10 known substitutes for 6306ZZ: 386P436G01, 306FF, M1089-213-129B and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6306ZZ?
6306ZZ is cataloged in the U.S. Government catalog under NSN 3110-00-144-8642. 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.