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Technical Data Sheet
PartsTable / COMPONENT / 1B3843
1B3843 ✓ 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 ROLLER,BEARING is a the manufacturer industrial component. Key specifications include overall_length: 1.7500 INCHES NOMINAL IN, special_features: ROLLER TYPE: SOLID, overall_outside_diameter: 1.2500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-4209, 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
1B3843
NSN: 3110-00-120-4209
FSC: 3110
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
overall_length1.7500 INCHES NOMINAL IN
special_featuresROLLER TYPE: SOLID
overall_outside_diameter1.2500 INCHES NOMINAL IN
NSN3110-00-120-4209
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1B3843 · 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
•
OVERALL OUTSIDE DIAMETER: 1.2500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESROLLER TYPE: SOLID
OVERALL OUTSIDE DIAMETER1.2500 INCHES NOMINAL IN
OVERALL LENGTH1.7500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
678-1292-00Interchangeable
interchangeable cross-reference
interchangeable
26489Interchangeable
interchangeable cross-reference
interchangeable
36129Interchangeable
3TB 3.5" 7.2k SATA II
interchangeable
21218Interchangeable
interchangeable cross-reference
interchangeable
B50559Interchangeable
interchangeable cross-reference
interchangeable
674-4006-010Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B3843?
1B3843 is a ROLLER,BEARING.
What parts can replace 1B3843?
There are 13 known substitutes for 1B3843: 678-1292-00, 26489, 36129 and 10 more. Substitute compatibility should be verified for your specific system.
Is 1B3843 still available?
1B3843 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