Rotor Retaining Ring for High-Speed Alternators
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If parts of AC motors rather than generators
Motor parts use separate statistical numbering within heading 8503.
If sold as general forged rings without generator specifications
Plain metal forgings without machine-specific design classify under Chapter 73.
If for gas turbine-driven generators
Mechanical drive-specific components may fall under turbine parts in 8411.
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Import Tips & Compliance
• 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
Related Products under HTS 8503.00.95.46
DC Link Capacitor Assembly for Wind Turbine Alternators
This capacitor assembly is a critical power electronics component used in the inverter systems of AC generators classified under 8501.64.0110, such as those in wind turbines. It smooths voltage fluctuations in the DC link between the generator rectifier and inverter. It falls under HTS 8503.00.95.46 as a part solely for these specific high-capacity AC alternators.
Stator Winding Insulation Paper for Large AC Generators
High-voltage insulation paper specifically engineered for stator windings in AC generators rated ≥5 MVA under 8501.64.0110. It provides dielectric strength for high-temperature operation in wind power alternators. Classified in 8503.00.95.46 due to its principal, sole use in these specific machines.
IGBT Power Module for Wind Generator Converters
Insulated Gate Bipolar Transistor module rated for megawatt-scale power conversion in AC generators of 8501.64.0110. Essential for the variable frequency drive systems in modern wind turbines. HTS 8503.00.95.46 applies as a part principally used with these specific alternators.
Cooling Fan Impeller for Generator Housings
Precision-cast aluminum impeller for forced-air cooling systems in enclosed AC generators classified in 8501.64.0110. Designed for high airflow at generator operating temperatures up to 155°C. HTS 8503.00.95.46 as a part solely principally for these large alternators.
Exciter Field Winding Assembly
Copper winding assembly for the exciter section of brushless AC generators under 8501.64.0110. Provides rotating DC field excitation for main generator rotor. Classified in 8503.00.95.46 as principal part of these specific high-capacity alternators.
Bearing Sleeve for Generator Main Shaft
High-tin Babbitt-lined steel sleeve bearing for main rotor shafts in AC generators of 8501.64.0110. Designed for continuous duty at 3000 kW+ power levels. HTS 8503.00.95.46 as part principally used with these alternators.