Nano-Polished Inner Ring for Semiconductor Wafer Lappers
Nano-surface finished inner ring for air-bearing spindles in wafer lappers, achieving sub-micron flatness for semiconductor device fabrication readiness. Minimizes subsurface damage in lapping process. HTS 8482.99.25 for precision other bearing rings.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If plain/air bearing design
Hydrostatic/air bearings without rolling elements classify under 8483 transmission parts.
If part of wafer grinding/lapping machines
Semiconductor wafer preparation equipment parts go to specific 8479 provisions.
If refractory ceramic construction
Ceramic nano-polished rings for high-cleanliness use shift to Chapter 69.
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Import Tips & Compliance
• Include SEM micrographs or profilometer data proving nano-finish for classification support
• Declare as replacement parts for lappers under semiconductor statistical provisions
• Avoid 9031 classification by confirming not integral to measuring functions
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