PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 502257
502257 ✓ 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,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL ROLLER, bore_shape: STRAIGHT, bore_diameter: 20.0 MILLIMETERS NOMINAL MM, overall_width: 14.0 MILLIMETERS NOMINAL MM, surface_finish: GROUND, locating_feature: NONLOCATING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-6503, 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
502257
NSN: 3110-00-155-6503
FSC: 3110
CAGE: 02978 — RENK AMERICA LLC DIV RENK AMERICA (USA)
SPECIFICATIONS
materialSTEEL ROLLER
bore_shapeSTRAIGHT
bore_diameter20.0 MILLIMETERS NOMINAL MM
overall_width14.0 MILLIMETERS NOMINAL MM
surface_finishGROUND
locating_featureNONLOCATING
style_designatorSINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, TWO LIP OUTER RING, SEPARABLE
overall_outside_diameter47.0 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data215,GR00,CL1 TYPE
standard_tolerance_designationRBEC NO.1
NSN3110-00-155-6503
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 502257 · 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
•
MATERIAL: STEEL OUTER RING
•
NONDEFINITIVE SPEC/STD DATA: 215,GR00,CL1 TYPE
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, TWO LIP OUTER RING, SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 47.0 MILLIMETERS NOMINAL MM
•
SURFACE FINISH: GROUND
•
INTERNAL FIT-UP DESIGNATION: STANDARD
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OUTER RING
NONDEFINITIVE SPEC/STD DATA215,GR00,CL1 TYPE
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, TWO LIP OUTER RING, SEPARABLE
MATERIALSTEEL INNER RING
MATERIALSTEEL ROLLER
OVERALL OUTSIDE DIAMETER47.0 MILLIMETERS NOMINAL MM
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE SHAPESTRAIGHT
LOCATING FEATURENONLOCATING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
U1207TMInterchangeable
interchangeable cross-reference
interchangeable
75-1228X258Interchangeable
interchangeable cross-reference
interchangeable
1228X258Interchangeable
interchangeable cross-reference
interchangeable
E1206U107Interchangeable
interchangeable cross-reference
interchangeable
A1206WBInterchangeable
interchangeable cross-reference
interchangeable
AA55601-06AC0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 502257?
502257 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 502257?
There are 32 known substitutes for 502257: U1207TM, 75-1228X258, 1228X258 and 29 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 502257?
502257 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-6503. 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