Hydraulic Cylinder Piston Assembly
Precision-machined piston designed for linear acting hydraulic cylinders used in semiconductor wafer grinders to achieve exact dimensional tolerances on crystal boules. This part falls under HTS 8412.90.90.05 as a component of linear acting hydraulic power engines and motors essential for semiconductor processing equipment. It enables controlled linear motion in high-precision grinding operations.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as complete wafer grinding machine part set
Assemblies integral to semiconductor manufacturing machines classified as parts of those machines under 8479.
If for rotary acting hydraulic motors rather than linear
Heading 8412 distinguishes between linear and rotary acting engines; rotary parts fall in other subheadings.
If when used in precision testing apparatus
Parts of testing equipment for semiconductor devices classified in Chapter 90 per statistical notes.
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Import Tips & Compliance
• Verify the part is specifically for linear acting hydraulic systems with engineering specs linking to semiconductor equipment
• Include manufacturer declarations confirming use in Chapter 84 statistical note equipment to avoid reclassification
Related Products under HTS 8412.90.90.05
Silicon Carbide Boule Hydraulic Grinder
High-strength hydraulic cylinder for grinding silicon carbide boules used in power semiconductor devices. HTS 8412.90.90.05 classification for linear acting parts in equipment processing ultra-hard semiconductor materials. Rated for extreme grinding pressures.
Semiconductor Wafer Slicing Hydraulic Ram
Heavy-duty hydraulic ram providing linear thrust for diamond wafer slicing saws that cut monocrystalline semiconductor boules into thin wafers. Classified under HTS 8412.90.90.05 as a part of linear acting hydraulic power engines used in critical wafer preparation equipment. Ensures precise, vibration-free slicing essential for semiconductor device fabrication.
Float Zone Crystal Puller Hydraulic Rod
Hard chrome plated hydraulic rod for float zone crystal pullers producing ultra-pure monocrystalline silicon boules. HTS 8412.90.90.05 classification for linear acting hydraulic motor parts in semiconductor crystal growth equipment. Withstands high temperatures near melting zone.
Wafer Grinder Feed Hydraulic Piston
Servo-controlled hydraulic piston for automated infeed mechanisms on wafer grinders processing semiconductor slices to final thickness. HTS 8412.90.90.05 part of linear acting hydraulic power motors in wafer preparation equipment. Maintains 1 micron/minute removal rates.
Gallium Arsenide Wafer Polisher Actuator
Corrosion-resistant hydraulic actuator for polishers processing compound semiconductor wafers like gallium arsenide. Classified HTS 8412.90.90.05 as linear acting hydraulic engine part for specialized wafer preparation. Chemical-resistant seals for CMP slurries.
Monocrystalline Wafer Hydraulic Clamp Cylinder
Precision hydraulic clamp cylinder holding semiconductor wafers during lapping and polishing operations. Part of linear acting hydraulic motors under HTS 8412.90.90.05 for wafer preparation equipment. Vacuum-compatible for cleanroom use.