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.
Import Duty Rates by Country of Origin
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.
If used in gas or turbojet turbines
Parts for non-steam vapor turbines fall under heading 8411, separating by turbine type.
If classified as a general pump or compressor impeller
Similar rotating components for fluid handling are in Chapter 84 heading 8483, based on primary function.
If sold as part of a complete industrial machine set
If imported in a set with non-turbine machinery, it may shift to machines not elsewhere specified in 8479.
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Import Tips & Compliance
• Verify the part is exclusively for steam turbines via manufacturer specs to avoid misclassification into general machinery parts
• Include detailed engineering drawings and end-use certificates in documentation to confirm HTS 8406.90.45 applicability
• Watch for common pitfalls like classifying assembled rotors as complete turbines under 8406.81, which changes duty rates
Related Products under HTS 8406.90.45
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 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.
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.