Steam Turbine Generator Coupling

Flexible disc or gear-type couplings synchronizing turbine and generator shafts for grid-stable operation. HTS 8406.90.45 as other steam turbine parts. High misalignment tolerance for base-load plants.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
๐Ÿ‡จ๐Ÿ‡ณChina5%+35.0%40%
๐Ÿ‡ฒ๐Ÿ‡ฝMexico5%+10.0%15%
๐Ÿ‡จ๐Ÿ‡ฆCanada5%+10.0%15%
๐Ÿ‡ฉ๐Ÿ‡ชGermany5%+10.0%15%
๐Ÿ‡ฏ๐Ÿ‡ตJapan5%+10.0%15%

More Specific Codes

This product may fall under a more specific subheading:

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8483.60Lower: 12.8% vs 40%

If universal flexible couplings/clutches

General power transmission couplings classify in 8483, not turbine-specific.

8503.00.95Lower: 38% vs 40%

If parts of synchronous generators

If generator-end use predominates, follows generator heading 8503.

8411.99.90Lower: 37.4% vs 40%

If connecting non-steam turbine to generator

Couplings follow classification of principal turbine component.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

โ€ข Document torsional stiffness ratings matching turbine-generator specs

โ€ข Separate couplings from flexibles under 8483 by proving rigid turbine integration

โ€ข Use bonded warehouses for high-value couplings pending turbine installation

Related Products under HTS 8406.90.45

Steam Turbine Rotor Assembly

A precision-engineered rotor assembly designed for high-speed rotation within steam turbines to convert thermal energy into mechanical power. Classified under HTS 8406.90.45 as a part of steam turbines, specifically under 'other' parts not covered by more specific subheadings. It is essential for power generation in industrial and utility applications.

Steam Turbine Nozzle Ring Assembly

Circular arrays of precision nozzles that accelerate steam into high-velocity jets impinging on turbine blades. HTS 8406.90.45 covers this as other parts of steam turbines, optimizing expansion efficiency. Critical for combined-cycle power plants.

Steam Turbine Blade Carrier Disc

Forged discs that serve as carriers for turbine blades, providing structural support in high-pressure stages. Classified as other parts under HTS 8406.90.45 for steam turbines. Vital for aerospace-derived industrial turbines.

Steam Turbine Exhaust Casing Section

Low-pressure casing segments directing exhaust steam to condensers, fabricated from specialized alloys. Under HTS 8406.90.45 as other parts of steam turbines. Key for vacuum efficiency in Rankine cycle plants.

Steam Turbine Thrust Bearing

Tilting pad thrust bearings absorbing axial loads from steam pressure differentials on rotors. Under HTS 8406.90.45 for other steam turbine parts. Oil-lubricated for continuous 24/7 operation.

Steam Turbine Bellows Expansion Joint

Multi-ply stainless steel bellows compensating for thermal expansion between turbine casing sections. HTS 8406.90.45 as other steam turbine parts. Critical for alignment in high-temperature environments.