Ceramic Hybrid Angular Contact Bearing 71906
Model 71906 features steel rings with silicon nitride ceramic balls, 30mm bore, for ultra-high speeds in wafer slicing saw spindles. The angular contact design handles thrust from cutting forces on semiconductor wafers. HTS 8482.10.5028 covers this other angular contact type.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If miniature size under 10mm bore
Miniature ball bearings have separate angular contact provisions.
If imported in sets with retainers
Complete bearing assemblies including separators classified as parts.
If predominantly ceramic construction
High ceramic content may classify under ceramic articles.
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Import Tips & Compliance
• Declare ceramic content accurately for material analysis; provide preload specs
• Pitfall: undervaluing due to hybrid construction—use transaction value method
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Related Products under HTS 8482.10.50.28
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The 7205B is a single-row angular contact ball bearing designed for high-speed applications with a 25mm bore and 52mm outer diameter, featuring a 15-degree contact angle. It supports combined radial and axial loads, making it ideal for machine tool spindles in semiconductor wafer grinders. Classified under HTS 8482.10.5028 as an angular contact bearing not specified elsewhere.
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The 7008C angular contact ball bearing has a 40mm bore, ceramic balls for reduced friction, and 15-degree contact angle, optimized for spindle speeds over 20,000 RPM. Used in crystal grinders for semiconductor boule preparation to achieve precise diameters. Falls under HTS 8482.10.5028 as other angular contact bearings.
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