PartsTable
Technical Data Sheet
121S5 ✓ 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 material: STEEL COMP E52100 OR STEEL COMP E51100 OVERALL, bore_diameter: 1.0680 INCHES MINIMUM AND 1.0760 INCHES MAXIMUM IN, alignment_type: RIGID, overall_height: 0.6200 INCHES MINIMUM AND 0.6300 INCHES MAXIMUM IN, surface_finish: UNGROUND, special_features: W/O OIL HOLE IN BAND,RADIUS AT BORE 1/32 IN. IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-117-0773, 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
121S5
NSN: 3110-00-117-0773
FSC: 3110
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OR STEEL COMP E51100 OVERALL
bore_diameter1.0680 INCHES MINIMUM AND 1.0760 INCHES MAXIMUM IN
alignment_typeRIGID
overall_height0.6200 INCHES MINIMUM AND 0.6300 INCHES MAXIMUM IN
surface_finishUNGROUND
special_featuresW/O OIL HOLE IN BAND,RADIUS AT BORE 1/32 IN. IN
style_designatorTAPERED ROLLERS, BANDED OD
overall_outside_diameter2.0000 INCHES MINIMUM AND 2.0100 INCHES MAXIMUM IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
thrust_directional_capability_designationSINGLE
NSN3110-00-117-0773
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121S5 · 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
ALIGNMENT TYPE: RIGID
BORE DIAMETER: 1.0680 INCHES MINIMUM AND 1.0760 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
STYLE DESIGNATOR: TAPERED ROLLERS, BANDED OD
SURFACE FINISH: UNGROUND
MATERIAL: STEEL COMP E52100 OR STEEL COMP E51100 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
ALIGNMENT TYPERIGID
OVERALL HEIGHT0.6200 INCHES MINIMUM AND 0.6300 INCHES MAXIMUM IN
SPECIAL FEATURESW/O OIL HOLE IN BAND,RADIUS AT BORE 1/32 IN. IN
BORE DIAMETER1.0680 INCHES MINIMUM AND 1.0760 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
STYLE DESIGNATORTAPERED ROLLERS, BANDED OD
SURFACE FINISHUNGROUND
MATERIALSTEEL COMP E52100 OR STEEL COMP E51100 OVERALL
OVERALL OUTSIDE DIAMETER2.0000 INCHES MINIMUM AND 2.0100 INCHES MAXIMUM IN
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
41958-50Interchangeable
interchangeable cross-reference
interchangeable
17277Interchangeable
interchangeable cross-reference
interchangeable
100788Interchangeable
interchangeable cross-reference
interchangeable
08459Interchangeable
interchangeable cross-reference
interchangeable
T107Interchangeable
interchangeable cross-reference
interchangeable
123328Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121S5?
121S5 is a BEARING,ROLLER,THRUST.
What parts can replace 121S5?
There are 18 known substitutes for 121S5: 41958-50, 17277, 100788 and 15 more. Substitute compatibility should be verified for your specific system.
Is 121S5 still available?
121S5 is currently cancelled.
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