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Technical Data Sheet
PartsTable / COMPONENT / 3B3920
3B3920 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include end_item_identification: AXSYM SYSTEM, part_name_assigned_by_controlling_agency: NAPA REAGENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0552, 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
3B3920
NSN: 3110-00-100-0552
FSC: 3110
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
end_item_identificationAXSYM SYSTEM
part_name_assigned_by_controlling_agencyNAPA REAGENT
NSN3110-00-100-0552
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3B3920 · 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 CLASS 2
•
STYLE DESIGNATOR: NORMAL ANGLE
•
BACKFACE CORNER RADIUS: 0.0625 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.7450 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OVERALL WIDTH0.7500 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
BACKFACE CORNER RADIUS0.0625 INCHES NOMINAL IN
OUTSIDE DIAMETER2.7450 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
188229Interchangeable
interchangeable cross-reference
interchangeable
DC2615Interchangeable
interchangeable cross-reference
interchangeable
850653Interchangeable
interchangeable cross-reference
interchangeable
Y400K234Interchangeable
interchangeable cross-reference
interchangeable
26274Interchangeable
interchangeable cross-reference
interchangeable
A10572Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3B3920?
3B3920 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 3B3920?
There are 17 known substitutes for 3B3920: 188229, DC2615, 850653 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3B3920?
3B3920 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0552. 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