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Technical Data Sheet
PartsTable / COMPONENT / 5556001
5556001 ✓ 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: 0.9542 INCHES NOMINAL IN, cone_width: 1.1420 INCHES NOMINAL IN, bore_diameter: 2.6250 INCHES NOMINAL IN, overall_width: 1.1730 INCHES NOMINAL IN, standout_width: 0.2188 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4172, 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
5556001
NSN: 3110-00-100-4172
FSC: 3110
CAGE: 55102 — CONTINENTAL EMSCO CO SKAGIT PRODUCTS DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.9542 INCHES NOMINAL IN
cone_width1.1420 INCHES NOMINAL IN
bore_diameter2.6250 INCHES NOMINAL IN
overall_width1.1730 INCHES NOMINAL IN
standout_width0.2188 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0930 INCHES NOMINAL IN
backface_corner_radius0.0780 INCHES NOMINAL IN
overall_outside_diameter4.7244 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-4172
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 5556001 · 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
•
BORE DIAMETER: 2.6250 INCHES NOMINAL IN
•
CONE WIDTH: 1.1420 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0780 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.2188 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0930 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CUP WIDTH: 0.9542 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)
BORE DIAMETER2.6250 INCHES NOMINAL IN
CONE WIDTH1.1420 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0780 INCHES NOMINAL IN
STANDOUT WIDTH0.2188 INCHES NOMINAL IN
OVERALL WIDTH1.1730 INCHES NOMINAL IN
CONE CORNER RADIUS0.0930 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CUP WIDTH0.9542 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
35118CInterchangeable
interchangeable cross-reference
interchangeable
711121Interchangeable
interchangeable cross-reference
interchangeable
21C2222Interchangeable
interchangeable cross-reference
interchangeable
4600-S726Interchangeable
interchangeable cross-reference
interchangeable
100880Interchangeable
interchangeable cross-reference
interchangeable
101514-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5556001?
5556001 is a BEARING,ROLLER,TAPERED.
What parts can replace 5556001?
There are 21 known substitutes for 5556001: 35118C, 711121, 21C2222 and 18 more. Substitute compatibility should be verified for your specific system.
Is 5556001 still available?
5556001 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