PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 309-0257-000
309-0257-000 ✓ 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 material: STEEL OUTER RING, bore_shape: STRAIGHT, bore_diameter: 0.1875 INCHES NOMINAL IN, overall_width: 0.1970 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2741, 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
309-0257-000
NSN: 3110-00-198-2741
FSC: 3110
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL OUTER RING
bore_shapeSTRAIGHT
bore_diameter0.1875 INCHES NOMINAL IN
overall_width0.1970 INCHES NOMINAL IN
seal_quantity2
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
bearing_seal_typeCONTACT
lubrication_materialGREASE
overall_outside_diameter0.5000 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
NSN3110-00-198-2741
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 309-0257-000 · 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
•
LOAD DIRECTION: RADIAL
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
BEARING SEAL TYPE: CONTACT
•
RETAINER FABRICATION METHOD: PRESSED
•
SEAL QUANTITY: 2
•
SURFACE FINISH: GROUND
•
LUBRICATION MATERIAL: GREASE
TECHNICAL CHARACTERISTICS (FLIS)
LOAD DIRECTIONRADIAL
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
BEARING SEAL TYPECONTACT
RETAINER FABRICATION METHODPRESSED
SEAL QUANTITY2
SURFACE FINISHGROUND
LOAD DIRECTIONRADIAL
LUBRICATION MATERIALGREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
BORE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 35
R2SXA7YInterchangeable
interchangeable cross-reference
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R2MR3Interchangeable
interchangeable cross-reference
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FF-B-2844/02Interchangeable
interchangeable cross-reference
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77R12LR1CJInterchangeable
interchangeable cross-reference
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AA59644-117ECHCInterchangeable
interchangeable cross-reference
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R12.2ZRL15Interchangeable
interchangeable cross-reference
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LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 309-0257-000?
309-0257-000 is a BEARING,BALL,ANNULAR.
What parts can replace 309-0257-000?
There are 35 known substitutes for 309-0257-000: R2SXA7Y, R2MR3, FF-B-2844/02 and 32 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 309-0257-000?
309-0257-000 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2741. 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