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Technical Data Sheet
PartsTable / COMPONENT / 1B6520
1B6520 ✓ 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 RING,BEARING,OUTER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 3.8750 INCHES NOMINAL IN, overall_width: 1.4375 INCHES NOMINAL IN, surface_finish: GROUND, special_features: OUTSIDE DIAMETER CHAMFERED; OIL HOLES, style_designator: SOLID OUTER RACE, JOURNAL AND NEEDLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-8433, 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
1B6520
NSN: 3110-00-156-8433
FSC: 3110
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter3.8750 INCHES NOMINAL IN
overall_width1.4375 INCHES NOMINAL IN
surface_finishGROUND
special_featuresOUTSIDE DIAMETER CHAMFERED; OIL HOLES
style_designatorSOLID OUTER RACE, JOURNAL AND NEEDLE
overall_outside_diameter110.0 MILLIMETERS NOMINAL MM
standard_tolerance_designationAFBMA STD TOLERANCES FOR JOURNAL BEARINGS
NSN3110-00-156-8433
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1B6520 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCES FOR JOURNAL BEARINGS
•
OVERALL OUTSIDE DIAMETER: 110.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OVERALL
•
BORE DIAMETER: 3.8750 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SOLID OUTER RACE, JOURNAL AND NEEDLE
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCES FOR JOURNAL BEARINGS
OVERALL WIDTH1.4375 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER110.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
BORE DIAMETER3.8750 INCHES NOMINAL IN
SPECIAL FEATURESOUTSIDE DIAMETER CHAMFERED; OIL HOLES
SURFACE FINISHGROUND
STYLE DESIGNATORSOLID OUTER RACE, JOURNAL AND NEEDLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
5-131-04-024-00Interchangeable
interchangeable cross-reference
interchangeable
AMS-P-5510Interchangeable
interchangeable cross-reference
interchangeable
0921206-9Interchangeable
interchangeable cross-reference
interchangeable
0R212Interchangeable
Same NIIN cross-reference
interchangeable
118580Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B6520?
1B6520 is a RING,BEARING,OUTER.
What parts can replace 1B6520?
There are 5 known substitutes for 1B6520: 5-131-04-024-00, AMS-P-5510, 0921206-9 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B6520?
1B6520 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-8433. 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