Titanium Alloy Outer Ring for Float Zone Crystal Growers
Lightweight titanium alloy outer ring for radial bearings in float zone crystal growers, resisting high temperatures during polysilicon rod zone melting for ultra-pure semiconductor material. Enables stable rotation for defect-free boule formation. HTS 8482.99.25 for other specialized bearing races.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If predominantly titanium construction
Titanium articles over a certain purity classify in Chapter 81 metals, not bearing parts.
If for tapered roller bearings
If designed for tapered roller types in high-load crystal growth, uses specific subheading.
If part of testing apparatus for crystals
Incorporated in crystal quality testing equipment moves to Chapter 90.
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Import Tips & Compliance
• Certify titanium content and thermal ratings to distinguish from standard alloy races
• Leverage semiconductor statistical provisions in declarations for accurate duty
• Avoid bundling with growers to prevent 8479 classification as machine parts
Related Products under HTS 8482.99.25
Stainless Steel Outer Bearing Race for Semiconductor Wafer Slicers
Precision-machined stainless steel outer race designed for high-speed ball bearings in wafer slicing saws used in semiconductor manufacturing. It provides the rolling surface for balls in bearings that support the saw blade during thin wafer cuts from silicon boules. Classified under 8482.99.25 as an other inner or outer ring or race for specialized industrial applications.
Hardened Steel Inner Ring for Crystal Puller Bearings
High-hardness alloy steel inner ring for thrust ball bearings in Czochralski crystal pullers, enabling rotation of the seed crystal during monocrystalline silicon boule growth. Essential for maintaining precise speeds under extreme thermal conditions in semiconductor material production. Falls under 8482.99.25 as an other bearing ring not specified elsewhere.
Ceramic-Coated Outer Race for Wafer Grinder Spindles
Advanced ceramic-coated steel outer race for angular contact ball bearings in wafer grinders, ensuring minimal particle generation during crystal boule diameter grinding. Critical for achieving precise flats indicating conductivity type in semiconductor wafers. HTS 8482.99.25 covers such specialized other bearing races.
Carbide-Enhanced Inner Race for Wafer Slicing Spindles
Tungsten carbide insert inner race for diamond wafer slicing saw bearings, providing extreme wear resistance during continuous silicon wafer production. Maintains spindle precision for uniform wafer thickness. Under 8482.99.25 as other bearing rings.
High-Temp Outer Race for Czochralski Puller Thrust Bearings
Inconel superalloy outer race for thrust bearings in Czochralski pullers, enduring 1400°C+ melt temperatures during silicon crystal growth. Supports vertical pull mechanism for large-diameter semiconductor boules. 8482.99.25 classification for other races.
Nano-Polished Inner Ring for Semiconductor Wafer Lappers
Nano-surface finished inner ring for air-bearing spindles in wafer lappers, achieving sub-micron flatness for semiconductor device fabrication readiness. Minimizes subsurface damage in lapping process. HTS 8482.99.25 for precision other bearing rings.