Float Zone Crystal Grower Vacuum Pump Rotor
The rotor assembly for hermetic vacuum pumps in float zone crystal growers, enabling ultra-high vacuum (UHV) conditions for producing pure monocrystalline semiconductor rods from polycrystalline silicon. This part handles the compression of process gases during zone melting. Falls under 8414.90.41.55 as a component of 8414.40 compressors in semiconductor wafer manufacturing apparatus.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used in non-hermetic vacuum pumps
Standard vacuum pump parts fall under Chapter 84 pumps, excluding gas compressors.
If as part of complete crystal growing machine
Unspecified semiconductor manufacturing machines encompass assembled systems with compressors.
If for automatic pressure control in testing equipment
Parts of semiconductor testing apparatus shift to Chapter 90 instruments.
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Import Tips & Compliance
• Provide process flow diagrams demonstrating UHV compressor role in float zone method to confirm semiconductor classification
• Label with material certifications (e.g
• non-contaminating alloys) required for cleanroom compatibility
• Avoid misclassification as general pump parts (8413.91); specify hermetic compressor integration for 8414.40 subheading
Related Products under HTS 8414.90.41.55
Crystal Grinder Pneumatic Compressor Cylinder
Cylinder housing for hermetic pneumatic compressors powering the grinding spindles in crystal grinders that shape semiconductor boules to precise wafer diameters and flats. Provides contamination-free compressed air for high-speed precision grinding. Under 8414.90.41.55 as part of 8414.40 compressors for wafer preparation equipment.
Silicon Wafer Polisher Vacuum Compressor Manifold
Multi-port manifold for hermetic vacuum compressors supplying precisely controlled suction in silicon wafer polishers, achieving mirror-finish surfaces for device fabrication. Distributes clean dry air/vacuum to polishing pads. Part of 8414.40 compressors under 8414.90.41.55 for semiconductor wafer prep equipment.
Gallium Arsenide Crystal Grower Hermetic Compressor Motor
Brushless motor specifically designed for hermetic compressors in GaAs crystal growers using Liquid Encapsulated Czochralski (LEC) method for compound semiconductor wafers. Operates in corrosive ambients with encapsulant vapors. 8414.90.41.55 classification for 8414.40 parts in statistical note semiconductor equipment.
Wafer Grinder Spindle Air Bearing Compressor Housing
Precision housing for hermetic compressors generating clean compressed air for air bearing spindles in wafer grinders, maintaining sub-micron runout for boule diameter control. Essential for semiconductor wafer flat preparation. Under 8414.90.41.55 for crystal grinder compressors.
Diamond Wire Wafer Saw Coolant Recovery Compressor Scroll
Scroll element for oil-free hermetic compressors in coolant recovery systems of diamond wire wafer saws, recycling slurry while maintaining wafer surface quality. Handles abrasive particle-laden fluids. 8414.90.41.55 for 8414.40 semiconductor slicing compressors.
CMP Wafer Polisher Slurry Feed Compressor Diaphragm
Corrosion-resistant diaphragm for hermetic compressors delivering polishing slurry to chemical mechanical planarization (CMP) pads on wafer polishers. Ensures contamination-free delivery at precise pressures. Classified under 8414.90.41.55 for semiconductor wafer finishing compressors.