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Technical Data Sheet
PartsTable / COMPONENT / Q30308
Q30308 ✓ 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 INNER RING, bore_shape: STRAIGHT, bore_diameter: 40.00 MILLIMETERS NOMINAL MM, contact_angle: 25.0 DEGREES MINIMUM, overall_width: 23.0 MILLIMETERS NOMINAL MM, load_direction: ANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-101-4558, 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
Q30308
NSN: 3110-00-101-4558
FSC: 3110
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
bore_diameter40.00 MILLIMETERS NOMINAL MM
contact_angle25.0 DEGREES MINIMUM
overall_width23.0 MILLIMETERS NOMINAL MM
load_directionANGULAR
surface_finishGROUND
style_designatorCOUNTERBORED OUTER RING, NON-SEPARABLE
overall_outside_diameter900.00 MILLIMETERS NOMINAL MM
standard_tolerance_designationABEC NO.1
NSN3110-00-101-4558
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: Q30308 · 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
•
SURFACE FINISH: GROUND
•
OVERALL OUTSIDE DIAMETER: 900.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
MATERIAL: STEEL INNER RING
•
STYLE DESIGNATOR: COUNTERBORED OUTER RING, NON-SEPARABLE
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
OVERALL OUTSIDE DIAMETER900.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
MATERIALSTEEL INNER RING
STYLE DESIGNATORCOUNTERBORED OUTER RING, NON-SEPARABLE
STANDARD TOLERANCE DESIGNATIONABEC NO.1
MATERIALSTEEL OUTER RING
MATERIALPLASTIC RETAINER
MATERIALSTEEL BALL
LOAD DIRECTIONANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
7307BInterchangeable
interchangeable cross-reference
interchangeable
120556 ITEM 35Interchangeable
interchangeable cross-reference
interchangeable
7307BYInterchangeable
interchangeable cross-reference
interchangeable
155113105Interchangeable
interchangeable cross-reference
interchangeable
7309BInterchangeable
interchangeable cross-reference
interchangeable
2970Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is Q30308?
Q30308 is a BEARING,BALL,ANNULAR.
What parts can replace Q30308?
There are 20 known substitutes for Q30308: 7307B, 120556 ITEM 35, 7307BY and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for Q30308?
Q30308 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-101-4558. 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