Numerically Controlled Internal Cylindrical Grinder for Semiconductor Wafer Spindles
This machine tool is designed for precision grinding of internal cylindrical surfaces on spindles used in semiconductor wafer processing equipment. It employs numerically controlled operations with grinding stones to achieve sub-micron tolerances required for high-precision semiconductor manufacturing. Classified under HTS 8460.23.0065 as an other internal cylindrical grinding machine, numerically controlled, specifically for finishing metal components in wafer fabrication tools.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not numerically controlled
Non-CNC cylindrical grinding machines fall under the general 'other' category without numerical control features.
If classified as a semiconductor manufacturing machine
Machines specifically for semiconductor wafer processing may shift to Chapter 84 provisions for semiconductor equipment.
If imported as parts for semiconductor tools rather than complete machine
Individual grinding components or subassemblies are classified separately from complete machine tools.
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Import Tips & Compliance
• Provide detailed technical specifications confirming numerical control and internal cylindrical grinding function to avoid misclassification as non-NC machinery
• Include end-user statements specifying use in semiconductor equipment manufacturing to qualify for potential duty relief programs
• Ensure machine calibration certificates are available, as US Customs may inspect for compliance with precision finishing standards
Related Products under HTS 8460.23.00.65
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A specialized numerically controlled grinding machine for finishing internal diameters of bearings in Czochralski crystal pullers used to grow monocrystalline silicon boules for semiconductor wafers. It uses abrasive wheels for mirror finishes essential to prevent contamination in crystal growth processes. Falls under HTS 8460.23.0065 as an internal cylindrical grinder for metal parts in semiconductor crystal manufacturing equipment.
NC Internal Cylindrical Honing Machine for Wafer Slicing Saw Arbor
This numerically controlled machine performs internal cylindrical honing on arbors of wafer slicing saws that cut monocrystalline boules into semiconductor wafers. It achieves the exacting surface finishes needed for precise, contamination-free slicing operations. Classified in HTS 8460.23.0065 for internal cylindrical finishing of metal components in semiconductor wafer preparation equipment.
High-Precision NC Grinder for Wafer Grinder Spindle Housings
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NC Internal Diameter Grinder for Crystal Boule Grinder Shafts
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