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Technical Data Sheet
PartsTable / COMPONENT / 20857002
20857002 ✓ 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 GEAR ASSEMBLY,SPEED DECREASER is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, ring_style: CONCENTRIC, joint_style: VERTICAL JOINT, overall_width: 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN, fsc_application_data: ENGINE,AIRCRAFT,RECIPROCATING, radial_wall_thickness: 0.1750 INCHES MINIMUM AND 0.1850 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-536-4754, 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
20857002
NSN: 3110-01-536-4754
FSC: 3110
CAGE: 98523 — JERED LLC (USA)
SPECIFICATIONS
materialIRON OVERALL
ring_styleCONCENTRIC
joint_styleVERTICAL JOINT
overall_width0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN
fsc_application_dataENGINE,AIRCRAFT,RECIPROCATING
radial_wall_thickness0.1750 INCHES MINIMUM AND 0.1850 INCHES MAXIMUM IN
standard_bore_diameter5.750 INCHES IN
cross-sectional_shape_styleDOUBLE INSIDE BEVEL, STRAIGHT RADII FACE
NSN3110-01-536-4754
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 20857002 · 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 8
188548Interchangeable
interchangeable cross-reference
interchangeable
123301Interchangeable
interchangeable cross-reference
interchangeable
20857003Interchangeable
interchangeable cross-reference
interchangeable
RES800 F3A-77-N28Interchangeable
interchangeable cross-reference
interchangeable
20857002Interchangeable
interchangeable cross-reference
interchangeable
20857002 FIND NO 2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20857002?
20857002 is a GEAR ASSEMBLY,SPEED DECREASER.
What parts can replace 20857002?
There are 8 known substitutes for 20857002: 188548, 123301, 20857003 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20857002?
20857002 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-536-4754. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026