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Technical Data Sheet
PartsTable / COMPONENT / 444679
444679 ✓ 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 material: STEEL SEPARATOR SLUG, cup_width: 0.4688 INCHES NOMINAL IN, cone_width: 0.5938 INCHES NOMINAL IN, bore_diameter: 4.0000 INCHES NOMINAL IN, overall_width: 0.6250 INCHES NOMINAL IN, alignment_type: RIGID. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-820-2727, 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
444679
NSN: 3110-00-820-2727
FSC: 3110
CAGE: 29510 — KOMATSU AMERICAN INTL CO (USA)
SPECIFICATIONS
materialSTEEL SEPARATOR SLUG
cup_width0.4688 INCHES NOMINAL IN
cone_width0.5938 INCHES NOMINAL IN
bore_diameter4.0000 INCHES NOMINAL IN
overall_width0.6250 INCHES NOMINAL IN
alignment_typeRIGID
standout_width0.1562 INCHES NOMINAL IN
outside_diameter2.5312 INCHES NOMINAL IN
special_featuresDUTY CLASS M SERIES
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0600 INCHES NOMINAL IN
backface_corner_radius0.0600 INCHES NOMINAL IN
NSN3110-00-820-2727
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 444679 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
1440-01Interchangeable
interchangeable cross-reference
interchangeable
8-PInterchangeable
interchangeable cross-reference
interchangeable
HACH 1440-01Interchangeable
interchangeable cross-reference
interchangeable
193300Interchangeable
interchangeable cross-reference
interchangeable
193300PC6Interchangeable
interchangeable cross-reference
interchangeable
444679Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 444679?
444679 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 444679?
There are 19 known substitutes for 444679: 1440-01, 8-P, HACH 1440-01 and 16 more. Substitute compatibility should be verified for your specific system.
Is 444679 still available?
444679 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026