Stage Piano Keybed Velocity Spring Assembly
Weighted action keybed with graded velocity springs for professional stage pianos (heading 9207). Provides authentic grand piano feel with progressive resistance. Classifies as keyboard mechanism part under HTS 9209.94.8000.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If game controller mechanisms
Similar action for electronic drums/games classifies under video games.
If base metal springs
Generic springs without keybed mounting go to hardware chapter.
If upright piano actions
Acoustic piano mechanisms use different statistical reporting.
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Import Tips & Compliance
• Spring tension charts must show progressive weighting C-D# lightest, A# heaviest
• Lubrication specifications critical for smooth action
• Key dip measurement standardized at 10mm travel
Related Products under HTS 9209.94.80.00
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Hammond Organ Leslie Speaker Rotor
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Electronic Keyboard Touch Sensor Assembly
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