Ceramic Silicon Nitride Bearing Balls from Japan
Non-corrodible silicon nitride ceramic balls for high-speed bearings in crystal grinders used in semiconductor boule preparation. These balls provide superior wear resistance and low thermal expansion for precise diameter grinding. Falls under HTS 8482.91.0090 as 'other' bearing balls.
Duty Rate — Japan → United States
14.4%
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
• Include ceramic material purity certificates (>99% Si3N4) for duty verification; comply with REACH for non-steel materials; segregate from metallic balls to prevent contamination