Precision Copper Balls for Float Zone Crystal Grower Bearings
High-purity copper alloy balls for vacuum bearings in float zone crystal growers that produce semiconductor boules from polycrystalline silicon rods. Classified under HTS 8482.91.0015 due to statistical note 6 designation for copper alloy balls in semiconductor material growth equipment. Essential for precise rotation control in ultra-clean processing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for balls of other base metals
Only copper/copper alloy balls qualify under this subheading; other metals use adjacent codes.
If classified as precision measurement components
Some semiconductor test equipment parts may fall under Chapter 90 instruments.
If imported as part of complete transmission assembly
Bearing balls in semiconductor equipment transmissions classify with the housing assembly.
Not sure which classification is right?
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Import Tips & Compliance
• Include technical specs showing tolerance levels (e.g
• sphericity <1μm) proving semiconductor-grade precision
• Submit end-user statements confirming incorporation into statistical note 6 equipment
• Verify RoHS compliance documentation for cleanroom certification
Related Products under HTS 8482.91.00.15
Copper Alloy Bearing Balls for Semiconductor Wafer Crystal Pullers
Precision copper alloy balls used in high-vacuum bearings of Czochralski crystal pullers for growing monocrystalline silicon boules in semiconductor manufacturing. These balls fall under HTS 8482.91.0015 as they are specifically balls of copper alloys as per statistical note 6 to chapter 84, intended for semiconductor processing equipment. Their non-magnetic properties and corrosion resistance suit cleanroom environments.
Non-Magnetic Copper Roller Balls for Wafer Grinding Machine Spindles
Copper alloy balls engineered for non-magnetic properties in high-speed spindles of wafer grinders that process crystal boules to precise diameters for semiconductor wafers. HTS 8482.91.0015 applies per statistical note 6 for copper balls in wafer preparation equipment. Critical for maintaining crystal orientation during grinding.
Copper Alloy Balls for Wafer Slicing Saw Bearings
Specialized copper balls for precision bearings in inner diameter (ID) saws that slice semiconductor wafers from monocrystalline boules. Falls under HTS 8482.91.0015 as statistical note 6 copper alloy balls for wafer slicing equipment in semiconductor processing. Ensures vibration-free slicing for uniform wafer thickness.
High-Purity Copper Balls for Wafer Lapping Machine Thrust Bearings
Ultra-pure copper alloy balls for thrust bearings in wafer lappers that achieve flatness tolerances critical for semiconductor fabrication. Classified HTS 8482.91.0015 per statistical note 6 for copper balls in wafer preparation equipment. Provides contamination-free load distribution during lapping.
Copper Roller Balls for Semiconductor Wafer Polisher Spindles
Precision copper alloy roller balls for high-speed polishers that prepare wafer surfaces to atomic flatness for semiconductor device fabrication. HTS 8482.91.0015 designation via statistical note 6 for copper balls in wafer polishing equipment. Critical for nanometer-level surface finish control.