Boule Grinder Workhead Assembly from Japan
Complete workhead with motor, spindle, and stroke mechanism for advancing crystal boules against grinding wheels. Provides micron-level diameter control. Major replacement part for semiconductor grinders in 8442.40.00.00.
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 motor HP rating, stroke length (50-200mm), and feed rates in specs
• Full assembly import preferred over components to establish complete part status
• Calibration certificates required for servo positioning accuracy claims