Oil-Impregnated Sintered Bronze Bushing for Float Zone Crystal Grower
Self-lubricating oil-impregnated sintered bronze plain shaft bearing without housing, supporting shafts in float zone crystal growers for pure semiconductor material production. Classified in HTS 8483.30.8090 for plain shaft bearings in specialized semiconductor equipment.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unfinished sintered metal powder product
Unmachined sintered bronze alloys fall under Chapter 81 for other base metals.
If part of complete float zone apparatus
Semiconductor wafer manufacturing machines include such parts in 8479.
If with integrated housing
Sintered bearings supplied housed classify under bearing housings.
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Import Tips & Compliance
• Include impregnation specs and porosity data to validate as plain bearing vs. porous metal article
• Ensure oil type is non-volatile for cleanroom certification
• Declare as 'without housing' explicitly on commercial invoice
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