Miniature Four-Point Contact Bearing
Miniature four-point contact ball bearing for precision wafer polishers, accommodating radial/axial/bidirectional loads in flatness-critical semiconductor surfacing. HTS 8482.80.00.80 covers such other specialized ball bearings for wafer prep equipment.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If self-aligning ball bearings
Self-aligning feature for misalignment moves to 8482.80.0030.
If for conical roller types
Conical rollers classify under 8482.92 separate from ball types.
If integrated in wafer inspection machines
Precision measuring machines for semiconductor devices use Chapter 90.
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Import Tips & Compliance
• Provide micrometer-level tolerance specs linking to polisher flatness requirements
• Document as semiconductor-specific to distinguish from general miniature bearings
Related Products under HTS 8482.80.00.80
Precision Angular Contact Ball Bearing
A high-precision angular contact ball bearing designed for semiconductor wafer grinding machines, capable of handling both radial and axial loads at high speeds. It falls under HTS 8482.80.00.80 as an other ball bearing not specified elsewhere in heading 8482. This subheading covers specialized bearings used in precision machinery like semiconductor processing equipment.
Ceramic Hybrid Roller Bearing
A ceramic hybrid roller bearing used in high-speed wafer slicing saws for semiconductor manufacturing, featuring silicon nitride balls for reduced friction and heat. Classified in HTS 8482.80.00.80 as other combined or specialized roller bearings not fitting primary subheadings. Its application in precise slicing equipment aligns with statistical notes for wafer preparation.
High-Temperature Deep Groove Ball Bearing
Deep groove ball bearing with high-temperature alloys for crystal grinders in semiconductor boule preparation, enduring 500°C+ during diameter grinding. Classified HTS 8482.80.00.80 for other bearings in wafer manufacturing equipment as defined in statistical notes.
Low-Vibration Precision Roller Bearing
Low-vibration cylindrical roller bearing for float-zone crystal pullers, minimizing boule defects in monocrystalline growth. HTS 8482.80.00.80 for other rollers in semiconductor crystal growing equipment.
Monocrystalline Wafer Lapper Bearing
Angular contact bearing for wafer lappers ensuring dimensional tolerances in semiconductor fabrication prep. HTS 8482.80.00.80 for other bearings in (a)(ii)(C) lappers/polishers.
Wafer Grinder Spindle Bearing
Custom spindle bearing assembly for semiconductor crystal grinders, grinding boules to wafer diameters with flat indicators. Under HTS 8482.80.00.80 as other bearing for statistical note (a)(ii)(A) equipment.