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Technical Data Sheet
PartsTable / COMPONENT / 21638
21638 ✓ Verified by PartsTable
EIZO · 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

CABLE ASSEMBLY,SPECIAL PURPOSE,E. Key specifications include shape: CYLINDRICAL, material: STEEL OVERALL, overall_length: 1.125 INCHES NOMINAL IN, inside_diameter: 1.000 INCHES NOMINAL IN, outside_diameter: 1.094 INCHES NOMINAL IN, overall_diameter: 1.094 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-6173, 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
21638
NSN: 3110-00-100-6173
FSC: 3110
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
shapeCYLINDRICAL
materialSTEEL OVERALL
overall_length1.125 INCHES NOMINAL IN
inside_diameter1.000 INCHES NOMINAL IN
outside_diameter1.094 INCHES NOMINAL IN
overall_diameter1.094 INCHES NOMINAL IN
segment_quantity7
style_designatorBALL
shaft_attachment_methodPRESSED ON SHAFT
rolling_element_diameter0.1250 INCHES NOMINAL IN
standard_tolerance_designationAFBMA STD TOLERANCE FOR BALLS, GRADE 50
NSN3110-00-100-6173
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21638 · EIZO ⚠ 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
•
ROLLING ELEMENT DIAMETER: 0.1250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR BALLS, GRADE 50
•
MATERIAL: STEEL OVERALL
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
ROLLING ELEMENT DIAMETER0.1250 INCHES NOMINAL IN
STYLE DESIGNATORBALL
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR BALLS, GRADE 50
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
151700-0155Interchangeable
interchangeable cross-reference
interchangeable
23008Interchangeable
interchangeable cross-reference
interchangeable
4216-031-G855Interchangeable
interchangeable cross-reference
interchangeable
BA2-1Interchangeable
interchangeable cross-reference
interchangeable
857467Interchangeable
interchangeable cross-reference
interchangeable
474403PG925PC24Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21638?
21638 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E manufactured by EIZO.
What parts can replace 21638?
There are 28 known substitutes for 21638: 151700-0155, 23008, 4216-031-G855 and 25 more. Substitute compatibility should be verified for your specific system.
Is 21638 still available?
21638 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