For machines of heading 84.64
Parts and accessories suitable for use solely or principally with the machines of headings 84.56 to 84.65, including work or tool holders, self-opening dieheads, dividing heads and other special attachments for the machines; tool holders for any type of tool for working in the hand. > Other: > For machines of heading 84.64 > For machines of heading 84.64
Duty Rate (from China)
Subheadings
Products classified under Tariff item 8466.91
Boule Alignment Fixture for Crystal Slicers
This fixture aligns crystal boules in slicing saws to ensure uniform wafer thickness during semiconductor production. It is a special attachment designed solely for machines of heading 84.64, which cover sawing or grinding machines for working stone, ceramics, or similar hard materials. As such, it is classified under tariff item 8466.91.00 as a part or accessory for those machines.
8466.91.00Cast Iron Chip Pan for Machining Center
A rough cast iron chip pan designed to collect metal chips and coolant during machining operations on machines of heading 84.64. It is cleaned and machined only to remove risers and locate for custom drain integration, making it an unfinished part suitable for further finishing after import.
8466.91.00Cast Iron Column Housing for Vertical Machining Center
A cast iron housing for the vertical column of machining centers under heading 84.64, cleaned and machined only for gate/riser removal and assembly location. This structural part supports the spindle assembly and is supplied unfinished for further processing.
8466.91.00Cast Iron Coolant Trough Rough Casting
A rough cast iron trough for collecting coolant in machines of heading 84.64, machined only for sprue removal and base locating pads. It prevents thermal damage during grinding by channeling fluids and remains unfinished for custom integration.
8466.91.00Cast Iron Electrical Box Mounting Plate Rough
A rough cast iron plate for mounting electrical enclosures on grinding machine frames under heading 84.64, with fin removal machining only. It supports control boxes safely and is oversized for custom cutouts, remaining unfinished.
8466.91.00Cast Iron Gib Strip Blank for Machine Slides
Rough cast iron blanks for gib strips used in slideways of heading 84.64 grinders, with gate removal and edge cleanup machining only. These provide adjustable wear surfaces for precise table movement and are supplied oversized for final fitting.
8466.91.00Cast Iron Headstock Base for Cylindrical Grinder
A cast iron base for the headstock assembly in cylindrical grinding machines under heading 84.64, cleaned and minimally machined to remove risers for finishing fixture location. It supports rotating workpieces during OD/ID grinding and is supplied unfinished.
8466.91.00Cast Iron Machine Base for CNC Machining Center
A rough cast iron base component for machines of heading 84.64, such as CNC grinding machines, cleaned and minimally machined only to remove casting defects like fins and gates. This foundational mounting part is unfinished and ready for further processing.
8466.91.00Cast Iron Motor Mounting Bracket Rough
A rough cast iron bracket for mounting spindle motors in heading 84.64 machines, cleaned and sprue-machined for locator pads only. It provides vibration-damping support and has a final hole pattern to be completed post-import.
8466.91.00Cast Iron Saddle Casting for Grinder Carriage
A cast iron saddle component for the carriage assembly of precision grinding machines under heading 84.64, with basic cleaning and fin removal machining only. This sliding structural element guides workpiece movement and is designed for final machining.
8466.91.00Cast Iron Spindle Nose Adapter Blank
A rough cast iron blank for spindle nose adapters used in heading 84.64 machining centers, cleaned and machined only to remove casting fins and permit location in CNC finishing equipment. This part interfaces the spindle with tooling and is unfinished.
8466.91.00Cast Iron Splash Guard Base Casting
A cast iron base for coolant splash guards on grinding machines under heading 84.64, with basic casting cleanup machining. It anchors protective shield assemblies and has rough vertical faces for custom shield attachment, remaining unfinished.
8466.91.00Cast Iron Tailstock Base for Grinder
A rough cast iron base for tailstock support in universal grinders under heading 84.64, machined only for riser removal and fixture pads. It centers long workpieces during grinding and is a blank for quill bore machining, remaining unfinished.
8466.91.00Cast Iron Way Cover Housing
A cast iron housing for slideway protective covers on heading 84.64 machines, cleaned and gate-machined minimally. It protects precision ways from chip and coolant damage and is rough for telescopic cover assembly, remaining unfinished.
8466.91.00Cast Iron Worktable for Surface Grinder
A rough cast iron worktable for surface grinding machines under heading 84.64, processed only by cleaning and machining to eliminate sprues, risers, and for fixture alignment. This component provides the flat working surface and is unfinished.
8466.91.00Cast Iron Y-Axis Slide Casting
A cast iron casting for the Y-axis slide assembly in CNC grinding machines under heading 84.64, with minimal fin and gate machining for finishing alignment. It enables transverse workpiece positioning and is oversized for precision slideway generation.
8466.91.00CNC Spindle Cartridge for Wafer Grinding Machines
This high-precision spindle cartridge is designed specifically for CNC wafer grinders used in semiconductor wafer preparation, ensuring ultra-flat surfaces for fabrication. It is a part suitable solely for machines of heading 84.64, which include grinding machines for working hard materials like ceramics or silicon. Therefore, it falls under tariff item 8466.91.00 for parts of those machines.
8466.91.00Coolant Nozzle Assembly for Wafer Saws
This precision nozzle directs coolant to diamond blades in wafer slicing saws, preventing thermal damage to semiconductor material. It is an accessory designed solely for sawing machines of heading 84.64, which cover machines for cutting hard materials. As an accessory for those machines, it is classified under tariff item 8466.91.00.
8466.91.00Diamond Grinding Wheel Arbor for Wafer Polishers
This specialized arbor holds diamond-impregnated grinding wheels for semiconductor wafer polishers, achieving nanometer-level flatness. It is a part suitable solely for grinding machines of heading 84.64, which include machines for polishing hard materials. Therefore, it is classified under tariff item 8466.91.00 as a part for those machines.
8466.91.00Edge Profiling Tool Holder for Wafer Grinders
This tool holder is used for edge grinders that profile semiconductor wafers to precise geometries post-slicing. It is a part designed solely for grinding machines of heading 84.64, which cover machines for working hard materials. As a part for those machines, it falls under tariff item 8466.91.00.
8466.91.00Lapping Plate Dresser for Wafer Lappers
This automated dresser maintains the flatness of lapping plates in semiconductor wafer grinders and lappers, ensuring dimensional tolerances. It is a part suitable solely for machines of heading 84.64, which include grinding and lapping machines for hard materials. Therefore, it is classified under tariff item 8466.91.00.
8466.91.00Motor Mounting Flange for Float Zone Crystal Pullers
This custom flange mounts rotation motors in float zone crystal pullers or grinders for semiconductor boule preparation. It is a part suitable solely for machines of heading 84.64, which include grinding machines for hard materials. As a part for those machines, it is classified under tariff item 8466.91.00.
8466.91.00Polishing Slurry Feed Arm for Wafer Polishers
This robotic arm dispenses slurry evenly across rotating wafer polishers for mirror-finish surfaces. It is an accessory designed solely for polishing machines of heading 84.64, which cover machines for working hard materials. As an accessory for those machines, it falls under tariff item 8466.91.00.
8466.91.00Precision Collet for Wafer Slicing Saw Blades
This high-accuracy collet holds diamond blades in wafer slicing saws that cut monocrystalline boules into thin wafers. It is an accessory designed solely for sawing machines of heading 84.64, which cover machines for cutting hard materials. Therefore, it is classified under tariff item 8466.91.00.
8466.91.00Wafer Chuck Vacuum Plate for Crystal Grinders
This precision vacuum chuck plate secures semiconductor crystal boules during grinding to exact diameters and flats indicating conductivity. It is a part suitable solely for grinding machines of heading 84.64, which include machines for working hard materials. As a part for those machines, it is classified under tariff item 8466.91.00.