8442.40.00.00/Wafer Grinder Vibration Isolation Mounts/Japan

Wafer Grinder Vibration Isolation Mounts from Japan

Active pneumatic isolation mounts that reduce vibration transmission to <1 nm RMS for ultra-precision wafer grinding. Critical for maintaining wafer bow specs. Parts of wafer grinder apparatus under 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%

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Import Tips

• Specify natural frequency (<1 Hz) and payload capacity (100-500 kg)

• Active vs passive mounts have different valuations; document control systems

• Install location (base frame vs workhead) affects complete machine classification