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Technical Data Sheet
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AA59646-18CATB — 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: COPPER ALLOY RETAINER, bore_shape: STRAIGHT, bore_diameter: 3.5000 INCHES NOMINAL IN, overall_width: 0.7500 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System under NSN 3110-00-640-8953, 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
AA59646-18CATB
NSN: 3110-00-640-8953
FSC: 3110
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialCOPPER ALLOY RETAINER
bore_shapeSTRAIGHT
bore_diameter3.5000 INCHES NOMINAL IN
overall_width0.7500 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter5.0000 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
retainer_fabrication_methodMACHINED
standard_tolerance_designationABEC NO.1
NSN3110-00-640-8953
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AA59646-18CATB · 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
•
BORE SHAPE: STRAIGHT
•
MATERIAL: STEEL INNER RING
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
BORE DIAMETER: 3.5000 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS
BORE SHAPESTRAIGHT
MATERIALSTEEL INNER RING
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL BALL
MATERIALCOPPER ALLOY RETAINER
MATERIALSTEEL OUTER RING
BORE DIAMETER3.5000 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONABEC NO.1
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
FFB171InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
XLS1 3-4FFInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A-A-59646InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
XLS3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
SMA586381InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
177039-14InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA59646-18CATB?
AA59646-18CATB is a BEARING,BALL,ANNULAR.
What parts can replace AA59646-18CATB?
There are 18 known substitutes for AA59646-18CATB: FFB171, XLS1 3-4FF, A-A-59646 and 15 more. Substitute compatibility should be verified for your specific system.
Is AA59646-18CATB still available?
AA59646-18CATB 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: September 2026