Wafer Grinder Spindle Ball Bearing Race
Custom outer race for ball bearings in semiconductor wafer grinders, ensuring flatness tolerances <1 μm across 300mm wafers. Hydrostatic groove design for lubricant retention. Specifically HTS 8482.99.05.00 for ball bearing outer rings.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If as integral grinder head component
Stone grinding machine parts (including wafer prep) use 8464.
If precision measurement spindles
Flatness gauging equipment parts go to Chapter 90.
If crankshaft or camshaft bearings
Larger industrial bearings have separate provisions.
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Import Tips & Compliance
• Attach machine model compatibility and spindle RPM ratings to link to semiconductor use
• Document special coatings (e.g
• DLC for particle reduction) but classify by function
• Separate from grinder machine import to optimize duty rates
Related Products under HTS 8482.99.05.00
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Precision-machined stainless steel inner ring designed specifically for ball bearings used in high-speed industrial applications. It forms the rotating inner component that works with balls and an outer race to reduce friction. Classified under HTS 8482.99.05.00 as an inner ring exclusively for ball bearings.
Chrome Steel Ball Bearing Outer Race
Hardened chrome steel outer ring or race for radial ball bearings, providing the stationary housing for bearing balls in automotive and machinery applications. Essential component machined to exact tolerances for smooth rotation. Falls under HTS 8482.99.05.00 as an outer race dedicated to ball bearings.
Ceramic Hybrid Ball Bearing Inner Ring
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Precision Ground Ball Bearing Raceway Ring
Outer race with superfinished raceway surface (RMS 8-12 μin) for miniature ball bearings in semiconductor crystal pullers. Critical for maintaining wafer boule diameter precision during grinding processes. Classified as outer ring for ball bearings under HTS 8482.99.05.00.
ABEC-7 Precision Ball Bearing Inner Race
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Deep Groove Ball Bearing Outer Ring
Machined steel outer ring with deep ball path groove for radial load deep groove ball bearings in wafer slicing saw spindles. Provides primary load-bearing surface in high-precision cuts. Under HTS 8482.99.05.00 as outer race for ball bearings.