Vacuum-Compatible Ball Bearing for Crystal Growers from Japan
Ball bearings engineered for vacuum environments in Czochralski crystal growers, pulling pure silicon boules for semiconductor wafers. Under HTS 8482.10.5068 as other ball bearings, they withstand high temperatures and ultra-high vacuum without outgassing. Key for growing defect-free monocrystalline material before boule grinding and slicing.
Duty Rate — Japan → United States
19%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide vacuum rating (e.g
• 10^-9 Torr) and bakeout temperature specs
• Use anti-magnetic material declarations for silicon purity concerns
• Ship in nitrogen-purged containers to maintain vacuum readiness