Hydraulic Counterbalance Valve for Wafer Grinder Spindle Systems from Japan
Counterbalance hydraulic valve maintaining stable spindle downforce in wafer grinders processing semiconductor wafers to precise thickness. Classifies under HTS 8481.10.0020 as hydraulic pressure-reducing valve for wafer preparation equipment. Prevents spindle bounce during high-precision grinding operations.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide spindle load and counterbalance force specifications for grinder compatibility,Include dynamic response specifications preventing grinding chatter,Document cleanroom vibration isolation requirements for grinder installation