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Technical Data Sheet
PartsTable / COMPONENT / 1603273
1603273 ✓ 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 INNER RING, bore_shape: STRAIGHT, bore_diameter: 25.0 MILLIMETERS NOMINAL MM, overall_width: 0.8125 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 3110-00-271-0172, 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
1603273
NSN: 3110-00-271-0172
FSC: 3110
CAGE: 88725 — WESTINGHOUSE ELECTRIC CORP GENERAL CONTROL DIV (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
bore_diameter25.0 MILLIMETERS NOMINAL MM
overall_width0.8125 INCHES NOMINAL IN
seal_quantity2
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE CARTRIDGE TYPE
bearing_seal_typeCONTACT
lubrication_materialGREASE
overall_outside_diameter52.0 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
NSN3110-00-271-0172
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1603273 · 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
•
BEARING SEAL TYPE: CONTACT
•
BORE SHAPE: STRAIGHT
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
•
RETAINER FABRICATION METHOD: PRESSED
•
LUBRICATION MATERIAL: GREASE
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.8125 INCHES NOMINAL IN
BEARING SEAL TYPECONTACT
BORE SHAPESTRAIGHT
INTERNAL FIT-UP DESIGNATIONSTANDARD
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
RETAINER FABRICATION METHODPRESSED
LUBRICATION MATERIALGREASE
LOAD DIRECTIONRADIAL
SURFACE FINISHGROUND
STANDARD TOLERANCE DESIGNATIONABEC NO.1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
785616-4Interchangeable
interchangeable cross-reference
interchangeable
625A821ABP002REVFInterchangeable
interchangeable cross-reference
interchangeable
205SZZCInterchangeable
interchangeable cross-reference
interchangeable
462205AInterchangeable
interchangeable cross-reference
interchangeable
A-A-59595Interchangeable
interchangeable cross-reference
interchangeable
FF-B-171/09J05B2BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1603273?
1603273 is a BEARING,BALL,ANNULAR.
What parts can replace 1603273?
There are 8 known substitutes for 1603273: 785616-4, 625A821ABP002REVF, 205SZZC and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1603273?
1603273 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-271-0172. 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