Precision Ground Ball Bearing Raceway Ring from Mexico
Outer race with superfinished raceway surface (RMS 8-12 μin) for miniature ball bearings in semiconductor crystal pullers. Critical for maintaining wafer boule diameter precision during grinding processes. Classified as outer ring for ball bearings under HTS 8482.99.05.00.
Duty Rate — Mexico → United States
34.9%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%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; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Include grind charts and roundness measurements (≤0.5 μm) proving suitability only for ball bearings
• Mark invoices clearly 'outer race for radial ball bearings' to distinguish from thrust or angular contact types
• For high-volume fab imports, consider binding rulings on whether lapped surfaces qualify as 'finished' parts