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Technical Data Sheet
PartsTable / COMPONENT / 539 ASY 90023
539 ASY 90023 ✓ 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,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, cup_width: 2.5000 INCHES NOMINAL IN, bore_diameter: 2.1250 INCHES NOMINAL IN, overall_width: 3.1250 INCHES NOMINAL IN, standout_width: 0.3125 INCHES NOMINAL IN, style_designator: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-928-6867, 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
539 ASY 90023
NSN: 3110-00-928-6867
FSC: 3110
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width2.5000 INCHES NOMINAL IN
bore_diameter2.1250 INCHES NOMINAL IN
overall_width3.1250 INCHES NOMINAL IN
standout_width0.3125 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0600 INCHES NOMINAL IN
overall_outside_diameter4.3750 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-928-6867
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 539 ASY 90023 · 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: 4.3750 INCHES NOMINAL IN
•
CUP WIDTH: 2.5000 INCHES NOMINAL IN
•
RETAINER FABRICATION METHOD: PRESSED
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES
•
MATERIAL: STEEL OVERALL
•
BACKFACE CORNER RADIUS: 0.0600 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
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)
OVERALL OUTSIDE DIAMETER4.3750 INCHES NOMINAL IN
CUP WIDTH2.5000 INCHES NOMINAL IN
RETAINER FABRICATION METHODPRESSED
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
MATERIALSTEEL OVERALL
BACKFACE CORNER RADIUS0.0600 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
OVERALL WIDTH3.1250 INCHES NOMINAL IN
BORE DIAMETER2.1250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
A1883Interchangeable
Mitt,softball,first Baseman's
interchangeable
1265088Interchangeable
Mitt,softball,first Baseman's
interchangeable
09073XBMInterchangeable
Mitt,softball,first Baseman's
interchangeable
2Z4872-392Interchangeable
interchangeable cross-reference
interchangeable
SM-B-394467Interchangeable
interchangeable cross-reference
interchangeable
A-2-7-52Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 539 ASY 90023?
539 ASY 90023 is a BEARING,ROLLER,TAPERED.
What parts can replace 539 ASY 90023?
There are 8 known substitutes for 539 ASY 90023: A1883, 1265088, 09073XBM and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 539 ASY 90023?
539 ASY 90023 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-928-6867. 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