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Technical Data Sheet
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1231348 — Technical Data Sheet

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— · 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: ALUMINUM ALLOY 2024, hole_diameter: 0.070 INCHES NOMINAL IN, outside_diameter: 0.688 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.440 INCHES NOMINAL IN, surface_treatment: ANODIZE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3110-00-144-8787, 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
1231348
NSN: 3110-00-144-8787
FSC: 3110
CAGE: 65054 — WESTINGHOUSE ELECTRIC CORP POWER GENERATION-GENERATOR DIV (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
hole_diameter0.070 INCHES NOMINAL IN
outside_diameter0.688 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.440 INCHES NOMINAL IN
surface_treatmentANODIZE
bolt_hole_quantity4
bolt_circle_diameter0.559 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-250/4,T3 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-A-8625,TY 1 CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
NSN3110-00-144-8787
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1231348 · 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
•
NONDEFINITIVE SPEC/STD DATA: 111 TYPE AND 5 CLASS AND 00 GRADE
•
MATERIAL: STEEL OVERALL
•
LOAD DIRECTION: RADIAL
•
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
BORE SHAPE: STRAIGHT
•
SURFACE FINISH: GROUND
•
BORE DIAMETER: 17.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
NONDEFINITIVE SPEC/STD DATA111 TYPE AND 5 CLASS AND 00 GRADE
MATERIALSTEEL OVERALL
LOAD DIRECTIONRADIAL
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
BORE DIAMETER17.0 MILLIMETERS NOMINAL MM
OVERALL WIDTH12.0 MILLIMETERS NOMINAL MM
STANDARD TOLERANCE DESIGNATIONABEC NO.1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
718InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
112-541PC3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
47503InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
B262158InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
375449InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10119798InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1231348?
1231348 is a BEARING,BALL,ANNULAR.
What parts can replace 1231348?
There are 8 known substitutes for 1231348: 718, 112-541PC3, 47503 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1231348?
1231348 is cataloged in the Federal Logistics Information System under NSN 3110-00-144-8787. 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: October 2026