Cast Iron Spindle Housing for Crystal Puller
Semi-finished cast iron housing for spindles in crystal pullers (Czochralski method) under heading 8465, with gates and risers removed and light machining for fixture placement. Used in growing monocrystalline silicon boules for semiconductor wafers. HTS 8466.92.10.00 applies due to minimal processing state.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If part of complete crystal growing furnace assembly
Integration into heating machinery of 8419 changes classification from machine tool parts.
If for dividing heads or special attachments
Specific function as a dividing head accessory shifts within Chapter 84 subheadings.
If machined for grinding applications not linked to 8465
Grindstones or similar uses classify separately from machine-specific parts.
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Import Tips & Compliance
• Provide CAD drawings showing intended 8465 machine use to support principal use classification
• Avoid any pre-finishing grinding; excess work risks moving to higher-duty finished parts headings
• Certify non-magnetic cast iron grade suitable for precision rotation in cleanroom environments
Related Products under HTS 8466.92.10.00
Cast Iron Machine Base for CNC Lathe
A rough-machined cast iron base designed for mounting CNC lathes of heading 8465, cleaned and machined only to remove casting fins, gates, sprues, and risers for precise location in finishing machinery. This part provides structural stability during high-precision machining operations on semiconductor wafer processing equipment. It falls under HTS 8466.92.10.00 due to its limited processing beyond basic casting cleanup, specific to heading 8465 machines.
Cast Iron Bed Frame for Wafer Grinder
Rough cast iron bed frame for wafer grinding machines under heading 8465, processed only by cleaning and minimal machining to eliminate casting defects and enable finishing machine alignment. Essential for maintaining flatness tolerances in semiconductor wafer preparation. Classified in 8466.92.10.00 as a semi-finished part solely for 8465 machines.
Cast Iron Column for Wafer Slicing Saw
Rough-machined cast iron vertical column for wafer slicing saws of heading 8465, cleaned of sprues and fins with locator machining only. Supports precise blade movement for slicing semiconductor boules into wafers. Fits 8466.92.10.00 as limited-process cast iron part.
Cast Iron Headstock Casting for Lapper Machine
Basic cleaned and de-finned cast iron headstock for wafer lapping machines under 8465, machined solely for finishing alignment. Critical for surface flatness in semiconductor wafer prep. 8466.92.10.00 due to semi-finished status.
Cast Iron Foot Bracket for Crystal Grinder
Semi-finished cast iron foot bracket for crystal grinders in wafer prep equipment (8465), with risers removed and locator faces machined. Ensures machine stability during boule diameter grinding. HTS 8466.92.10.00 for basic cast iron parts.