Steam Turbine Generator Coupling
A flexible disc or gear-type coupling that synchronizes turbine and generator shafts for grid-stable operation. It is designed for high misalignment tolerance and is not a rotor, making it an 'other part' of steam turbines.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the coupling is a general shaft coupling not specific to turbines
Shaft couplings are classified under heading 84.83.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the coupling is not classified as a general transmission coupling of heading 84.83
• Provide specifications to the CBSA to demonstrate its specific use in steam turbines
• Verify if the coupling is a 'part of general use' under Section XV
Related Products under Tariff item 8406.90.29
Steam Turbine Bearing Housing
A robust housing unit that encases and supports journal or thrust bearings in steam turbines, maintaining shaft alignment under high loads. It is an essential structural component for turbine operation and is not classified as a rotor, blade, or other specific part listed under sibling tariff items.
Steam Turbine Bellows Expansion Joint
A multi-ply stainless steel bellows expansion joint that compensates for thermal expansion between turbine casing sections. It is a critical component for maintaining alignment in high-temperature environments and is not a rotor, blade, or other specifically listed part.
Steam Turbine Blade Carrier Disc
Forged discs that serve as carriers for turbine blades, providing structural support in high-pressure stages. These are distinct from the blades themselves and are not further advanced beyond their role as carriers, making them 'other parts' of steam turbines.
Steam Turbine Blade Locking Kit
A specialized kit of pins, keys, and rivets used to secure blades to turbine discs against centrifugal forces. Sold as maintenance kits, these are not rotors or blades themselves but are essential for turbine assembly and repair.
Steam Turbine Coupling Shaft
A high-strength forged shaft that connects turbine rotors to generators or loads, transmitting rotational power. It is designed for extreme torque and is not a rotor itself, making it an 'other part' of steam turbines.
Steam Turbine Diaphragm Staging
Stationary diaphragm assemblies with guide vanes that direct steam flow onto turbine blades for optimal energy extraction. These are distinct from rotors or casings and are classified as 'other parts' of steam turbines.