TBM Gauge Cutter Roller from Mexico
Precision-engineered roller cutter for the outer gauge of tunnel boring machine cutterheads under heading 8430. Maintains tunnel diameter by cutting peripheral rock. Covered by 8431.49.90.34 for tunneling machinery parts.
Duty Rate — Mexico → United States
25%
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 roller bearing specs and load ratings; ensure markings indicate TBM-specific gauge diameter; file binding ruling if multi-use claimed