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Technical Data Sheet
PartsTable / COMPONENT / A20659
A20659 ✓ 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,ROLLER,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL COMP E51100 OR STEEL COMP E52100 OUTER RING, bore_shape: STRAIGHT, bore_diameter: 190.0 MILLIMETERS NOMINAL MM, overall_width: 75.0 MILLIMETERS NOMINAL MM, surface_finish: GROUND, special_features: OIL HOLE AND GROOVE ON OUTER RING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-970-3906, 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
A20659
NSN: 3110-00-970-3906
FSC: 3110
CAGE: 37159 — LUFKIN INDUSTRIES, INC. DBA POWER TRANSMISSION (USA)
SPECIFICATIONS
materialSTEEL COMP E51100 OR STEEL COMP E52100 OUTER RING
bore_shapeSTRAIGHT
bore_diameter190.0 MILLIMETERS NOMINAL MM
overall_width75.0 MILLIMETERS NOMINAL MM
surface_finishGROUND
special_featuresOIL HOLE AND GROOVE ON OUTER RING
style_designatorDOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
overall_outside_diameter290.0 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
standard_tolerance_designationRBEC NO.1
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES INNER RING
NSN3110-00-970-3906
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A20659 · 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
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES INNER RING
•
MATERIAL: STEEL COMP E51100 OR STEEL COMP E52100 OUTER RING
•
STYLE DESIGNATOR: DOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES INNER RING
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 OUTER RING
MATERIALALUMINUM OR COPPER ALLOY OR STEEL RETAINER
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 ROLLER
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 INNER RING
STYLE DESIGNATORDOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
BORE SHAPESTRAIGHT
SPECIAL FEATURESOIL HOLE AND GROOVE ON OUTER RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
23038Interchangeable
interchangeable cross-reference
interchangeable
710 6-40 UNFInterchangeable
interchangeable cross-reference
interchangeable
382 6-40 UNFInterchangeable
interchangeable cross-reference
interchangeable
22301056Interchangeable
interchangeable cross-reference
interchangeable
A14405CSInterchangeable
interchangeable cross-reference
interchangeable
14274Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A20659?
A20659 is a BEARING,ROLLER,SELF-ALIGNING.
What parts can replace A20659?
There are 9 known substitutes for A20659: 23038, 710 6-40 UNF, 382 6-40 UNF and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A20659?
A20659 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-970-3906. 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