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Technical Data Sheet
PartsTable / COMPONENT / A81420
A81420 ✓ 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,LINEAR MOTION is a the manufacturer industrial component. Key specifications include overall_length: 1.2350 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN, surface_finish: GROUND, working_bore_diameter: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, overall_outside_diameter: 0.8746 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2801, 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
A81420
NSN: 3110-00-198-2801
FSC: 3110
CAGE: 96881 — THOMSON INDUSTRIES INC (USA)
SPECIFICATIONS
overall_length1.2350 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
surface_finishGROUND
working_bore_diameter0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
overall_outside_diameter0.8746 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
NSN3110-00-198-2801
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A81420 · 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
•
OVERALL OUTSIDE DIAMETER: 0.8746 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
•
WORKING BORE DIAMETER: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
OVERALL OUTSIDE DIAMETER0.8746 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
OVERALL LENGTH1.2350 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
WORKING BORE DIAMETER0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
LBInterchangeable
interchangeable cross-reference
interchangeable
303615Interchangeable
interchangeable cross-reference
interchangeable
55875Interchangeable
interchangeable cross-reference
interchangeable
55875AInterchangeable
interchangeable cross-reference
interchangeable
SM-C-187638Interchangeable
interchangeable cross-reference
interchangeable
FSKInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A81420?
A81420 is a BEARING,BALL,LINEAR MOTION.
What parts can replace A81420?
There are 16 known substitutes for A81420: LB, 303615, 55875 and 13 more. Substitute compatibility should be verified for your specific system.
Is A81420 still available?
A81420 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