Crystal Boule Grinder Cylindrical Roller Bearing Inner Ring from Japan
Specialized inner race for cylindrical roller bearings supporting heavy-duty grinding spindles in crystal boule grinders for semiconductor wafer preparation. Provides exceptional rigidity for flat grinding to indicate crystal conductivity type. Under 8482.99.2560 as inner ring for other cylindrical roller bearings.
Duty Rate — Japan → United States
30.8%
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 already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include grind flat specifications and conductivity marking requirements in import docs
• Distinguish from general metalworking grinders by providing semiconductor boule processing context
• Verify ring material meets vacuum-compatible standards for crystal growth equipment