High-Speed Angular Contact Ball Bearing 71909
Precision angular contact single row ball bearing with 45mm OD for machine tool spindles, classified in HTS 8482.10.5048 for radial bearing size over 30-52mm. Provides both radial and axial load support at high RPMs. Features 15-degree contact angle for optimal performance.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If outer diameter over 100mm
Larger precision bearings shift to higher OD subheadings.
If imported as integral machine tool spindle part
Bearings permanently mounted in spindles classify with the complete tool in 8466.
If supplied as replacement ceramic hybrid
Ceramic ball hybrids may classify separately as specialized parts.
Not sure which classification is right?
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Import Tips & Compliance
• Specify contact angle and preload class in technical documentation for accurate statistical reporting
• Include dynamic load ratings (C) and speed limits to verify high-precision classification
• CBP may require evidence of non-interchangeability with standard deep groove types
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