PartsTable
Technical Data Sheet
121S1 ✓ 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,THRUST is a the manufacturer industrial component. Key specifications include length: 0.250 INCHES NOMINAL SQUARE END IN, material: STEEL CORROSION RESISTING OVERALL, stem_type: NONRISING, bore_shape: STRAIGHT SECOND END, valve_size: 0.750 INCHES IN, bonnet_type: INSIDE SCREW. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-117-0757, 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
121S1
NSN: 3110-00-117-0757
FSC: 3110
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
length0.250 INCHES NOMINAL SQUARE END IN
materialSTEEL CORROSION RESISTING OVERALL
stem_typeNONRISING
bore_shapeSTRAIGHT SECOND END
valve_size0.750 INCHES IN
bonnet_typeINSIDE SCREW
bore_length0.5000 INCHES NOMINAL BOTH ENDS IN
design_typeBELLOWS
thread_class2A A
bore_diameter0.1873 INCHES NOMINAL SECOND END IN
nominal_width22.0 MILLIMETERS MM
thread_length0.156 INCHES NOMINAL IN
NSN3110-00-117-0757
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121S1 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
16321-22Interchangeable
interchangeable cross-reference
interchangeable
1100-0002Interchangeable
interchangeable cross-reference
interchangeable
T113Interchangeable
interchangeable cross-reference
interchangeable
27A10425-105-11Interchangeable
interchangeable cross-reference
interchangeable
210037Interchangeable
interchangeable cross-reference
interchangeable
15268Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121S1?
121S1 is a BEARING,ROLLER,THRUST.
What parts can replace 121S1?
There are 29 known substitutes for 121S1: 16321-22, 1100-0002, T113 and 26 more. Substitute compatibility should be verified for your specific system.
Is 121S1 still available?
121S1 is currently cancelled.
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