Tunnel Boring Machine Cutterhead from Japan
Rotating cutterhead assembly for tunnel boring machines used in rock tunneling for mining access. Classified under HTS 8430.39.0080 as other tunneling machinery for earth and minerals. Features disc cutters for hard rock excavation.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include engineering drawings showing cutter design for rock boring to confirm classification
• Obtain mining safety certifications like MSHA approval for U.S. import clearance
• Avoid pitfalls by declaring as parts only if not integral to complete tunneling machine