Rotor Retaining Ring for High-Speed Alternators from Canada
High-strength alloy steel retaining ring that secures rotor windings against centrifugal forces in AC generators spinning at 1500+ RPM under 8501.64.0110. Forged specifically for wind turbine alternator rotor assemblies. Falls under 8503.00.95.46 as a principal part of these machines.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide material certificates showing tensile strength >1400 MPa required for MW generator speeds
• Include CAD drawings demonstrating precise rotor slot dimensions matching 8501.64.0110 alternators
• Distinguish from aircraft/engine parts by proving electrical generator (not mechanical drive) application