PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 15553-56
15553-56 ✓ 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: 2.8750 INCHES NOMINAL IN, cone_width: 1.6875 INCHES NOMINAL IN, bore_diameter: 5.0000 INCHES NOMINAL IN, overall_width: 3.3750 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 3110-00-620-0910, 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
15553-56
NSN: 3110-00-620-0910
FSC: 3110
CAGE: 29899 — CALGON CARBON UV TECHNOLOGIES LLC DBA HYDE MARINE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width2.8750 INCHES NOMINAL IN
cone_width1.6875 INCHES NOMINAL IN
bore_diameter5.0000 INCHES NOMINAL IN
overall_width3.3750 INCHES NOMINAL IN
standout_width0.2500 INCHES NOMINAL IN
special_featuresHOLE AND GROOVE IN CUP,WITH CONE SPACER
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0310 INCHES NOMINAL IN
overall_outside_diameter7.1875 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-620-0910
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 15553-56 · 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
•
CUP WIDTH: 2.8750 INCHES NOMINAL IN
•
CONE WIDTH: 1.6875 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0310 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.2500 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
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)
CUP WIDTH2.8750 INCHES NOMINAL IN
CONE WIDTH1.6875 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
SPECIAL FEATURESHOLE AND GROOVE IN CUP,WITH CONE SPACER
BACKFACE CORNER RADIUS0.0310 INCHES NOMINAL IN
STANDOUT WIDTH0.2500 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OVERALL WIDTH3.3750 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER7.1875 INCHES NOMINAL IN
BORE DIAMETER5.0000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
48290Interchangeable
interchangeable cross-reference
interchangeable
108X187Interchangeable
interchangeable cross-reference
interchangeable
2018584Interchangeable
interchangeable cross-reference
interchangeable
152685Interchangeable
interchangeable cross-reference
interchangeable
97623Interchangeable
interchangeable cross-reference
interchangeable
48290-20629Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 15553-56?
15553-56 is a BEARING,ROLLER,TAPERED.
What parts can replace 15553-56?
There are 11 known substitutes for 15553-56: 48290, 108X187, 2018584 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 15553-56?
15553-56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-620-0910. 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