PartsTable
Technical Data Sheet
PartsTable / COMPONENT / K18590K18520
K18590K18520 ✓ 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 RETAINER, cup_width: 0.5000 INCHES NOMINAL IN, cone_width: 0.6875 INCHES NOMINAL IN, bore_diameter: 1.6250 INCHES NOMINAL IN, overall_width: 0.6562 INCHES NOMINAL IN, standout_width: 0.1562 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 3110-00-183-9946, 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
K18590K18520
NSN: 3110-00-183-9946
FSC: 3110
CAGE: KCWY9 — HAYLEY GROUP LTD (GBR)
SPECIFICATIONS
materialSTEEL RETAINER
cup_width0.5000 INCHES NOMINAL IN
cone_width0.6875 INCHES NOMINAL IN
bore_diameter1.6250 INCHES NOMINAL IN
overall_width0.6562 INCHES NOMINAL IN
standout_width0.1562 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0620 INCHES NOMINAL IN
overall_outside_diameter2.8750 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
material_document_and_classificationQQ-S-624 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-624 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-624 FED SPEC 3RD MATERIAL RESPONSE OR 66 FED STD 4TH MATERIAL RESPONSE CUP
NSN3110-00-183-9946
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: K18590K18520 · 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
•
MATERIAL: STEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 CUP
•
STANDOUT WIDTH: 0.1562 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
OVERALL OUTSIDE DIAMETER: 2.8750 INCHES NOMINAL IN
•
BORE DIAMETER: 1.6250 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 WIDTH0.6562 INCHES NOMINAL IN
MATERIALSTEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 CUP
MATERIALSTEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 CONE
STANDOUT WIDTH0.1562 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OVERALL OUTSIDE DIAMETER2.8750 INCHES NOMINAL IN
BORE DIAMETER1.6250 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0620 INCHES NOMINAL IN
CONE WIDTH0.6875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
80569Interchangeable
interchangeable cross-reference
interchangeable
6141280Interchangeable
interchangeable cross-reference
interchangeable
R21559Interchangeable
interchangeable cross-reference
interchangeable
149-7/8Interchangeable
interchangeable cross-reference
interchangeable
GGG-P-833 TY1CLBST1SZ11Interchangeable
interchangeable cross-reference
interchangeable
1271KInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy K18590K18520?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is K18590K18520?
K18590K18520 is a BEARING,ROLLER,TAPERED.
What parts can replace K18590K18520?
There are 22 known substitutes for K18590K18520: 80569, 6141280, R21559 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for K18590K18520?
K18590K18520 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-183-9946. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — K18590K18520

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026