TBM Gauge Cutter Roller from Canada
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 — Canada → United States
10%
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 roller bearing specs and load ratings; ensure markings indicate TBM-specific gauge diameter; file binding ruling if multi-use claimed