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Technical Data Sheet
PartsTable / COMPONENT / 268503-55
268503-55 ✓ 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 hoist: 2.667 FEET FT, diameter: 0.4375 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING OVERALL, body_style: HOLE MOUNTED, body_width: 0.687 INCHES NOMINAL IN, bore_style: PLAIN BOTH ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8548, 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
268503-55
NSN: 3110-00-144-8548
FSC: 3110
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
hoist2.667 FEET FT
diameter0.4375 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING OVERALL
body_styleHOLE MOUNTED
body_width0.687 INCHES NOMINAL IN
bore_stylePLAIN BOTH ENDS
cloth_nameBUNTING
point_typeSTANDARD
seal_width0.460 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
teeth_typeSINGLE HELIX
tooth_formSTANDARD
body_height0.470 INCHES MAXIMUM IN
NSN3110-00-144-8548
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 268503-55 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
T311Interchangeable
interchangeable cross-reference
interchangeable
T211Interchangeable
interchangeable cross-reference
interchangeable
3311Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-2692Interchangeable
interchangeable cross-reference
interchangeable
6-3-11Interchangeable
interchangeable cross-reference
interchangeable
700721Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 268503-55?
268503-55 is a BEARING,BALL,ANNULAR.
What parts can replace 268503-55?
There are 28 known substitutes for 268503-55: T311, T211, 3311 and 25 more. Substitute compatibility should be verified for your specific system.
Is 268503-55 still available?
268503-55 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026