Crystal Grinder Workhead Spindle Bearing from Mexico
High-precision angular contact bearing assembly designed for workhead spindles on crystal grinders (8429) to support 5000+ RPM during semiconductor boule diameter reduction. Contamination-resistant. 8431.49.9020.
Duty Rate — Mexico → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) of U.S. note 16 to this subchapter
9903.03.060%Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Import Tips
• Specify ABEC/ISO precision class (P4/P2) and cleanroom compatibility
• Bearing life ratings (10,000+ hours) support machinery specificity
• Commodity bearings risk 8482 classification