Polymer Composite Plain Bearing for Crystal Grinder
High-load polymer composite (POM/PTFE blend) plain shaft bearing without housing for crystal grinders that shape semiconductor boules with conductivity flats. Falls under HTS 8483.30.8090 as a plain shaft bearing designed for precision semiconductor applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-machined polymer plates/sheets
Unfinished polymer products classify in Chapter 39, not as bearings.
If bundled with grinder assembly
Integral parts of wafer prep machines go to 8479.
If imported as unspecified 'parts thereof'
Toothed gears/clutches parts default to 8483.90 if not specific bearings.
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Import Tips & Compliance
• Detail composite formulation and load ratings to distinguish from generic plastic parts
• Include wear test data proving bearing functionality
• Ensure EU REACH compliance for polymer blends
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