PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 39590-39520B
39590-39520B ✓ 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: 2.6250 INCHES NOMINAL IN, overall_width: 1.1875 INCHES NOMINAL IN, standout_width: 0.4688 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-293-8978, 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
39590-39520B
NSN: 3110-00-293-8978
FSC: 3110
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.9375 INCHES NOMINAL IN
cone_width1.1875 INCHES NOMINAL IN
bore_diameter2.6250 INCHES NOMINAL IN
overall_width1.1875 INCHES NOMINAL IN
standout_width0.4688 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius1.1400 INCHES NOMINAL IN
backface_corner_radius0.1250 INCHES NOMINAL IN
overall_outside_diameter4.4375 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-293-8978
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 39590-39520B · 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
•
RETAINER FABRICATION METHOD: PRESSED
•
OVERALL OUTSIDE DIAMETER: 4.4375 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 1.1400 INCHES NOMINAL IN
•
CUP WIDTH: 0.9375 INCHES NOMINAL IN
•
BORE DIAMETER: 2.6250 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.4688 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)
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
RETAINER FABRICATION METHODPRESSED
OVERALL OUTSIDE DIAMETER4.4375 INCHES NOMINAL IN
CONE CORNER RADIUS1.1400 INCHES NOMINAL IN
CUP WIDTH0.9375 INCHES NOMINAL IN
BORE DIAMETER2.6250 INCHES NOMINAL IN
OVERALL WIDTH1.1875 INCHES NOMINAL IN
STANDOUT WIDTH0.4688 INCHES NOMINAL IN
CONE WIDTH1.1875 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
339A176Interchangeable
interchangeable cross-reference
interchangeable
17119-17244BInterchangeable
interchangeable cross-reference
interchangeable
FFB187/02-019Interchangeable
interchangeable cross-reference
interchangeable
712045Interchangeable
interchangeable cross-reference
interchangeable
3110001906665Interchangeable
interchangeable cross-reference
interchangeable
36690-36620BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 39590-39520B?
39590-39520B is a BEARING,ROLLER,TAPERED.
What parts can replace 39590-39520B?
There are 9 known substitutes for 39590-39520B: 339A176, 17119-17244B, FFB187/02-019 and 6 more. Substitute compatibility should be verified for your specific system.
Is 39590-39520B still available?
39590-39520B is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026