PartsTable
Technical Data Sheet
121KS301 ✓ 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 CORROSION RESISTING RETAINER, bore_shape: STRAIGHT, bore_diameter: 0.2498 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN, overall_width: 0.1950 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-603-1697, 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
121KS301
NSN: 3110-00-603-1697
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING RETAINER
bore_shapeSTRAIGHT
bore_diameter0.2498 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
overall_width0.1950 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
shield_quantity1
special_featuresTORQUE TESTED FOR LOW TORQUE RQMT,SELECTED,CLASSIFIED AND TESTED BY THE ASSY MFR AT HIS PLANT
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0008 INCHES MINIMUM RADIAL AND 0.0011 INCHES MAXIMUM RADIAL IN
lubrication_materialOIL
overall_outside_diameter0.6248 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
NSN3110-00-603-1697
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121KS301 · 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
SHIELD QUANTITY: 1
BORE SHAPE: STRAIGHT
INTERNAL CLEARANCE: 0.0008 INCHES MINIMUM RADIAL AND 0.0011 INCHES MAXIMUM RADIAL IN
LUBRICATION MATERIAL: OIL
LOAD DIRECTION: RADIAL
RETAINER FABRICATION METHOD: PRESSED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.1950 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM IN
SURFACE FINISHGROUND
SHIELD QUANTITY1
BORE SHAPESTRAIGHT
INTERNAL CLEARANCE0.0008 INCHES MINIMUM RADIAL AND 0.0011 INCHES MAXIMUM RADIAL IN
LUBRICATION MATERIALOIL
LOAD DIRECTIONRADIAL
RETAINER FABRICATION METHODPRESSED
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE
SPECIAL FEATURESTORQUE TESTED FOR LOW TORQUE RQMT,SELECTED,CLASSIFIED AND TESTED BY THE ASSY MFR AT HIS PLANT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
50MS584Interchangeable
interchangeable cross-reference
interchangeable
1250-0001MSInterchangeable
interchangeable cross-reference
interchangeable
8198758Interchangeable
interchangeable cross-reference
interchangeable
12-500-001Interchangeable
interchangeable cross-reference
interchangeable
350979Interchangeable
interchangeable cross-reference
interchangeable
1250-000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121KS301?
121KS301 is a BEARING,BALL,ANNULAR.
What parts can replace 121KS301?
There are 9 known substitutes for 121KS301: 50MS584, 1250-0001MS, 8198758 and 6 more. Substitute compatibility should be verified for your specific system.
Is 121KS301 still available?
121KS301 is currently cancelled.
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