Pneumatic Rotary Grinding Spindle
An air-driven rotary spindle used in precision grinding machines for semiconductor wafer processing, providing unlimited continuous rotation via pneumatic turbine. Classified under HTS 8412.39.0040 for its pneumatic unlimited rotary acting motor design.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as part of a semiconductor wafer grinding machine
Parts for machine tools working semiconductor materials fall under 8466 for specific end-use.
If for bare spindle motors without housing
Unassembled motor parts are dutied under the parts subheading rather than complete engines.
If equipped with integrated precision measuring gauges
Measuring instruments combined with motors may classify in Chapter 90.
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Import Tips & Compliance
• Certify equipment for cleanroom compatibility and provide wafer processing end-use documentation
• Label with precise RPM ratings and air pressure specs to confirm classification as unlimited rotary motor
• Watch for reclassification to Chapter 84 machinery headings if sold as part of a complete grinder assembly
Related Products under HTS 8412.39.00.40
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Semiconductor Wafer Polishing Air Motor
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