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
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
• 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