Crystal Boule Diameter Grinder Workhead
Precision workhead assembly with servo drive for grinding semiconductor boules to diameters from 150-450mm with 0.01mm tolerance. Part of crystal grinder machinery for heading 8430. Classifies 8431.49.90.
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Import Tips & Compliance
• Provide servo accuracy specs and boule material compatibility (Si, GaAs)
• Avoid complete machine classification under 8460
• CNC certification often required
Related Products under HTS 8431.49.90
Czochralski Crystal Puller Furnace
A high-temperature furnace used in the Czochralski method to grow monocrystalline silicon boules for semiconductor wafers. It is a part of crystal grower and puller machinery classified under heading 8429 as specialized ship unloading equipment adapted for semiconductor processing. Falls under 8431.49.90 as other parts for heading 8430 machinery.
Semiconductor Wafer Slicing Diamond Saw Blade
Precision diamond-impregnated saw blade designed for slicing monocrystalline semiconductor boules into thin wafers. Suitable solely for wafer slicing saws in semiconductor manufacturing equipment of heading 8430. Classified in 8431.49.90 as other parts.
Crystal Boule Grinder Spindle Assembly
High-precision spindle with diamond grinding wheel mount for grinding semiconductor crystal boules to exact wafer diameters and flats indicating resistivity. Part of crystal grinder equipment for heading 8430 semiconductor machinery. Other parts under 8431.49.90.
Wafer Lapping Plate for Semiconductor Polishers
Cast iron or copper lapping plate with colloidal slurry channels for flattening semiconductor wafers to nanometer tolerances before fabrication. Designed solely for wafer grinders, lappers, and polishers of heading 8430. Classifies as other parts in 8431.49.90.
Float Zone Crystal Grower RF Coil
Radio frequency induction coil for melting and zone-refining semiconductor material in float zone crystal growth systems. Principal part for crystal pullers under heading 8430 semiconductor equipment. Falls in 8431.49.90 other parts.
Semiconductor Wafer Grinder Vacuum Chuck
Porous ceramic vacuum chuck for holding 300mm silicon wafers during double-sided grinding to achieve parallelism tolerances. Solely for wafer grinder equipment of heading 8430. Other parts under 8431.49.90.