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Technical Data Sheet
PartsTable / COMPONENT / 550166
550166 ✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include color: BLACK, material: ALUMINUM ALLOY 6061, inside_diameter: 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN, outside_diameter: 1.000 INCHES NOMINAL IN, style_designator: ROUND, attachment_method: HOLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0777, 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
550166
NSN: 3110-00-100-0777
FSC: 3110
CAGE: 95019 — DANA CORP SPICER TRANSMISSION DIV (USA)
SPECIFICATIONS
colorBLACK
materialALUMINUM ALLOY 6061
inside_diameter0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
outside_diameter1.000 INCHES NOMINAL IN
style_designatorROUND
attachment_methodHOLE
overall_thickness0.188 INCHES NOMINAL IN
material_transparencyOPAQUE
shaft_accommodation_styleROUND
gripping_surface_conditionGRIP AID
NSN3110-00-100-0777
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 550166 · 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
•
CONE WIDTH: 1.1721 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
MATERIAL: STEEL OVERALL
•
BORE DIAMETER: 1.5000 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)
CONE WIDTH1.1721 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
MATERIALSTEEL OVERALL
BORE DIAMETER1.5000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
705293Interchangeable
interchangeable cross-reference
interchangeable
17-8715Interchangeable
interchangeable cross-reference
interchangeable
17-8705Interchangeable
interchangeable cross-reference
interchangeable
D50112Interchangeable
interchangeable cross-reference
interchangeable
18270Interchangeable
interchangeable cross-reference
interchangeable
649778Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 550166?
550166 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 550166?
There are 23 known substitutes for 550166: 705293, 17-8715, 17-8705 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 550166?
550166 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0777. 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