Ceramic Silicon Nitride Bearing Balls
Non-corrosive silicon nitride ceramic balls for high-speed bearings in crystal grinders and wafer polishers during semiconductor boule processing. Classified under HTS 8482.91.0030 as 'other' bearing balls due to material and precision specs beyond standard steel. Ideal for environments requiring chemical resistance in semiconductor fabrication.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported in bulk without bearing-specific tolerances
Pure ceramic articles not machined to bearing precision classify under Chapter 69 for refractory ceramics.
If needles or rollers instead of balls
Same subheading but different ball/needle/roller distinction within bearing parts.
If as parts of wafer slicing saws
Dedicated parts for semiconductor slicing machines may go to 8479.90 for unlisted machine parts.
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Import Tips & Compliance
• Provide material composition certificates confirming >95% silicon nitride; ensure sphericity grade (e.g
• G3) documentation; check Section 301 tariffs if from China due to advanced materials
Related Products under HTS 8482.91.00.30
Precision Chrome Steel Bearing Balls
High-precision chrome steel balls used in ball bearings for semiconductor wafer grinding machines, ensuring minimal surface deviation for accurate wafer preparation. These balls fall under HTS 8482.91.0030 as they are specifically 'other' balls for bearing parts, distinct from standard sizes. Their use in high-tech manufacturing aligns with equipment for processing semiconductor materials.
Grade 5 Tungsten Carbide Bearing Balls
Ultra-hard tungsten carbide balls (Grade 5 precision) for roller bearings in wafer slicing saws, providing durability against abrasive semiconductor materials like silicon boules. HTS 8482.91.0030 covers these as 'other' balls not fitting standard categories, suited for high-wear semiconductor processing equipment.
1/8 Inch Stainless Steel Bearing Balls
Corrosion-resistant 1/8 inch 440C stainless steel balls for bearings in float zone crystal pullers, maintaining purity in semiconductor boule growth. Under HTS 8482.91.0030 as 'other' due to size and application in specialized machinery.
3mm Grade 10 Zirconia Oxide Bearing Balls
Zirconia oxide balls for low-friction bearings in Czochralski crystal growers, critical for smooth rotation in semiconductor wafer production. HTS 8482.91.0030 applies to these advanced 'other' ceramic balls.
High-Polish 5/32 Inch Carbon Steel Bearing Balls
Mirror-finish 5/32 inch carbon steel balls for lapping machine bearings in wafer preparation, ensuring flatness tolerances in semiconductor processing. Classified as 'other' balls under HTS 8482.91.0030.
Precision 4mm Sapphire Bearing Balls
Synthetic sapphire balls for ultra-precision bearings in semiconductor testing polishers, offering extreme hardness for device processing equipment.