Bearing Housing Forging
Precision steel forging for the main bearing housing supporting roller bearings in the turbine center frame of widebody jet engines. HTS 8411.91.90.81 designation for aircraft-specific steel forgings in turbojet parts. Maintains critical shaft alignment under thermal expansion.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If finished bearing housings
Machined housings for bearings classify under separate Chapter 84 heading.
If non-alloy steel construction
Iron/non-alloy steel housings have different subheading from alloy steel.
If industrial machinery bearings
Non-aviation turbine bearing housings are other steel articles.
Not sure which classification is right?
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Import Tips & Compliance
• Document bearing journal tolerances to prove turbine-specific engineering
• Comply with REACH regulations for alloying elements in EU imports
• Avoid bulk packing; use protective cradles to prevent forging damage during shipping
Related Products under HTS 8411.91.90.81
Titanium Alloy Turbine Disk Forging
A high-strength steel forging shaped as a turbine disk for use in aircraft turbojet engines, designed to withstand extreme rotational speeds and temperatures. Classified under HTS 8411.91.90.81 as a steel forging component specifically for aircraft gas turbine engines. It forms the core rotating part where turbine blades are attached.
Compressor Spool Steel Forging
Steel forging for the compressor spool in high-bypass turbofan engines used on commercial aircraft, providing the structural backbone for multiple compressor stages. Falls under HTS 8411.91.90.81 due to its unfinished forged state and specific design for turbojet/turbopropeller parts in aviation. Essential for compressing incoming air in the engine core.
Fan Hub Forging for Turbofan Engine
Large steel forging serving as the central hub for the wide-chord fan blades in modern high-bypass ratio aircraft turbofan engines like those on Boeing 787. HTS 8411.91.90.81 applies as it's a rough forging dedicated to aircraft turbojet parts, prior to final machining. Critical for transferring torque from the engine shaft to fan blades.
Turbine Shaft Forging
Forged steel shaft blank for the high-pressure turbine section in military fighter jet engines, engineered for extreme thermal and centrifugal loads. Classified in HTS 8411.91.90.81 as a steel forging for aircraft turbopropeller/turbojet parts. Forms the rotating power transmission element connecting turbine stages.
Inlet Case Forging
Steel forging for the engine inlet case housing the fan frame in regional jet turbofan engines, providing structural support and airflow guidance. HTS 8411.91.90.81 covers this as an unfinished aircraft turbine steel forging. Protects internal components while managing boundary layer air.
Exhaust Nozzle Flange Forging
Heavy-duty steel flange forging connecting variable geometry exhaust nozzles in afterburning military turbojets. Specifically for aircraft turbines under HTS 8411.91.90.81 as steel forging parts. Enables thrust vectoring and noise suppression functions.