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PartsTable / COMPONENT / PW203PPFS57057
PW203PPFS57057 ✓ 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: 17.00 MILLIMETERS NOMINAL MM, overall_width: 0.6875 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-910-6322, 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
PW203PPFS57057
NSN: 3110-00-910-6322
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
bore_diameter17.00 MILLIMETERS NOMINAL MM
overall_width0.6875 INCHES MAXIMUM IN
seal_quantity2
load_directionRADIAL
surface_finishGROUND
special_featuresCARTRIDGE TYPE BEARING W/O GREASE PLUG
style_designatorNON-LOADING GROOVE, NON-SEPARABLE CARTRIDGE TYPE
bearing_seal_typeCONTACT
lubrication_materialGREASE
overall_outside_diameter40.00 MILLIMETERS NOMINAL MM
NSN3110-00-910-6322
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: PW203PPFS57057 · 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
•
LUBRICATION MATERIAL: GREASE
•
SEAL QUANTITY: 2
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
BEARING SEAL TYPE: CONTACT
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OUTER RING
LUBRICATION MATERIALGREASE
SEAL QUANTITY2
BORE SHAPESTRAIGHT
SPECIAL FEATURESCARTRIDGE TYPE BEARING W/O GREASE PLUG
LOAD DIRECTIONRADIAL
BEARING SEAL TYPECONTACT
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONLOOSE
STANDARD TOLERANCE DESIGNATIONABEC NO.1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
79Z1534Interchangeable
interchangeable cross-reference
interchangeable
4202186Interchangeable
interchangeable cross-reference
interchangeable
177MAX1Interchangeable
interchangeable cross-reference
interchangeable
225849Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PW203PPFS57057?
PW203PPFS57057 is a BEARING,BALL,ANNULAR.
What parts can replace PW203PPFS57057?
There are 4 known substitutes for PW203PPFS57057: 79Z1534, 4202186, 177MAX1 and 1 more. Substitute compatibility should be verified for your specific system.
Is PW203PPFS57057 still available?
PW203PPFS57057 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: July 2026