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Technical Data Sheet
PartsTable / COMPONENT / XLS4 1/2
XLS4 1/2 ✓ 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 XLS4 1/2 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-8988, 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
XLS4 1/2
NSN: 3110-00-155-8988
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
Part NumberXLS4 1/2
NSN3110-00-155-8988
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: XLS4 1/2 · 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
•
RETAINER FABRICATION METHOD: PRESSED
•
MATERIAL: STEEL OVERALL
•
OVERALL OUTSIDE DIAMETER: 6.2500 INCHES NOMINAL IN
•
BORE DIAMETER: 4.5000 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY OVERALL OUTSIDE DIAMETER
TECHNICAL CHARACTERISTICS (FLIS)
RETAINER FABRICATION METHODPRESSED
MATERIALSTEEL OVERALL
OVERALL OUTSIDE DIAMETER6.2500 INCHES NOMINAL IN
BORE DIAMETER4.5000 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONABEC NO.1
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL OVERALL
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY OVERALL OUTSIDE DIAMETER
NONDEFINITIVE SPEC/STD DATA115 TYPE AND 00 GRADE
LOAD DIRECTIONRADIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
SF23Interchangeable
interchangeable cross-reference
interchangeable
243618PC21Interchangeable
interchangeable cross-reference
interchangeable
L36Interchangeable
interchangeable cross-reference
interchangeable
FFB171Interchangeable
interchangeable cross-reference
interchangeable
XLS1 3-4FFInterchangeable
interchangeable cross-reference
interchangeable
A-A-59646Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is XLS4 1/2?
XLS4 1/2 is a XLS4 1/2.
What parts can replace XLS4 1/2?
There are 28 known substitutes for XLS4 1/2: SF23, 243618PC21, L36 and 25 more. Substitute compatibility should be verified for your specific system.
Is XLS4 1/2 still available?
XLS4 1/2 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026