PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 39581-39520
39581-39520 ✓ 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: 0.9375 INCHES NOMINAL IN, cone_width: 1.1875 INCHES NOMINAL IN, bore_diameter: 2.2500 INCHES NOMINAL IN, overall_width: 1.1875 INCHES NOMINAL IN, standout_width: 0.2500 INCHES NOMINAL 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 3110-00-919-8558, 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
39581-39520
NSN: 3110-00-919-8558
FSC: 3110
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.9375 INCHES NOMINAL IN
cone_width1.1875 INCHES NOMINAL IN
bore_diameter2.2500 INCHES NOMINAL IN
overall_width1.1875 INCHES NOMINAL IN
standout_width0.2500 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.3100 INCHES NOMINAL IN
backface_corner_radius0.1300 INCHES NOMINAL IN
overall_outside_diameter4.4375 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-919-8558
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 39581-39520 · 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
•
CONE CORNER RADIUS: 0.3100 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1300 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.2500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 2.2500 INCHES NOMINAL IN
•
RETAINER FABRICATION METHOD: PRESSED
•
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)
CONE CORNER RADIUS0.3100 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1300 INCHES NOMINAL IN
STANDOUT WIDTH0.2500 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.2500 INCHES NOMINAL IN
RETAINER FABRICATION METHODPRESSED
MATERIALSTEEL OVERALL
CUP WIDTH0.9375 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER4.4375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
9403096Interchangeable
interchangeable cross-reference
interchangeable
2290D3239Interchangeable
interchangeable cross-reference
interchangeable
4RTXSInterchangeable
interchangeable cross-reference
interchangeable
22788Interchangeable
interchangeable cross-reference
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202824Interchangeable
interchangeable cross-reference
interchangeable
24009Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 39581-39520?
39581-39520 is a BEARING,ROLLER,TAPERED.
What parts can replace 39581-39520?
There are 12 known substitutes for 39581-39520: 9403096, 2290D3239, 4RTXS and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 39581-39520?
39581-39520 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-919-8558. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026