Wafer Thickness Control Pneumatic Actuator
Precision linear pneumatic actuator maintaining constant wafer thickness during simultaneous double-side grinding operations. Classified HTS 8412.90.9025 as part of linear acting pneumatic motors in semiconductor wafer grinders. Achieves ±0.5 micron thickness uniformity across 300mm wafers.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If with direct thickness measurement capability
Pneumatic actuators incorporating measuring functions for semiconductor wafers classify as precision measuring instruments.
If for honing or lapping other materials
Non-semiconductor lapping/honing equipment parts fall under separate Chapter 84 provisions.
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Import Tips & Compliance
• Document thickness uniformity specs and feedback loop integration; include vibration isolation design certification
• Common misclassification under general grinding machine parts
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