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Technical Data Sheet
PartsTable / COMPONENT / U603231100
U603231100 ✓ 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: 63.0 MILLIMETERS NOMINAL MM, cone_width: 77.0 MILLIMETERS NOMINAL MM, bore_diameter: 105.0 MILLIMETERS NOMINAL MM, overall_width: 81.5 MILLIMETERS NOMINAL MM, standout_width: 18.5 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-440-5179, 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
U603231100
NSN: 3110-01-440-5179
FSC: 3110
CAGE: 0L5F0 — SUMITOMO MACHINERY CORP OF AMERICA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width63.0 MILLIMETERS NOMINAL MM
cone_width77.0 MILLIMETERS NOMINAL MM
bore_diameter105.0 MILLIMETERS NOMINAL MM
overall_width81.5 MILLIMETERS NOMINAL MM
standout_width18.5 MILLIMETERS NOMINAL MM
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius4.0 MILLIMETERS NOMINAL MM
backface_corner_radius3.0 MILLIMETERS NOMINAL MM
overall_outside_diameter225.0 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
NSN3110-01-440-5179
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: U603231100 · 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
•
BACKFACE CORNER RADIUS: 3.0 MILLIMETERS NOMINAL MM
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
CUP WIDTH: 63.0 MILLIMETERS NOMINAL MM
•
OVERALL OUTSIDE DIAMETER: 225.0 MILLIMETERS NOMINAL MM
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
STANDOUT WIDTH: 18.5 MILLIMETERS NOMINAL MM
•
CONE WIDTH: 77.0 MILLIMETERS NOMINAL MM
•
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)
BACKFACE CORNER RADIUS3.0 MILLIMETERS NOMINAL MM
INTERNAL FIT-UP DESIGNATIONSTANDARD
CUP WIDTH63.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER225.0 MILLIMETERS NOMINAL MM
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
STANDOUT WIDTH18.5 MILLIMETERS NOMINAL MM
CONE WIDTH77.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
OVERALL WIDTH81.5 MILLIMETERS NOMINAL MM
BORE DIAMETER105.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
32321Interchangeable
interchangeable cross-reference
interchangeable
653778-044Interchangeable
interchangeable cross-reference
interchangeable
200-0556-00Interchangeable
interchangeable cross-reference
interchangeable
8121700001-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U603231100?
U603231100 is a BEARING,ROLLER,TAPERED.
What parts can replace U603231100?
There are 4 known substitutes for U603231100: 32321, 653778-044, 200-0556-00 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for U603231100?
U603231100 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-440-5179. 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