PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

550221Cup,tapered Roller Bearing

Amfs American Fleet Services · NSN 3110-01-066-4401 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-01-066-4401 — this item is cataloged by the U.S. Government under National Stock Number 3110-01-066-4401. Primary manufacturer part number: 550221.
Features
  • Cup,tapered Roller Bearing — FSC 3110
  • 1 verified cross-reference
  • Primary manufacturer: Amfs American Fleet Services
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-01-066-4401, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Amfs American Fleet Services. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCup,tapered Roller Bearing
FSC / FSG3110 — No Item Name Available (FSG 31)
ManufacturersAmfs American Fleet Services (CAGE 0L8N4)
Technical Specifications
ParameterValue
NSN3110-01-066-4401
Primary Part Number550221
Item NameCup,tapered Roller Bearing
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerAmfs American Fleet Services
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1430-00-122-256355022-1 INTERCHANGEABLE
Feed,circular Polar
Andrew Llc
3110-00-198-2170 INTERCHANGEABLE
Cup,tapered Roller Bearing
6620-00-542-15792650-00311 INTERCHANGEABLE
Gage,pressure,dial Indicating
Rochester Sensors, Llc
Cross-Reference Index
Part NumberManufacturer
550221 PRIMARY Amfs American Fleet Services (USA)
Related Parts
1430-00-122-2563INTERCHANGEABLE
FEED,CIRCULAR POLAR
55022-1
3110-00-198-2170INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
6620-00-542-1579INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
2650-00311

Frequently Asked Questions

What is NSN 3110-01-066-4401?

NSN 3110-01-066-4401 is a Cup,tapered Roller Bearing, manufactured by Amfs American Fleet Services, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-01-066-4401?

NSN 3110-01-066-4401 has 1 cross-referenced part number: 550221 (Amfs American Fleet Services).

What NSN replaces 3110-01-066-4401?

There are 3 known substitutes for 3110-01-066-4401: 1430-00-122-2563, 3110-00-198-2170, 6620-00-542-1579. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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