S7204CD/HC Angular Contact Ball Bearing 20×47×14mm 15° Contact Angle for CNC Machine Spindle

• S7204CD/HC is single row hybrid ceramic angular contact ball bearing with 15° contact angle. It uses GCr15 steel raceways paired with silicon nitride ceramic balls. This bearing supports combined radial and one-direction axial loads. Ceramic rolling elements reduce centrifugal force at high speed, lower heat buildup and prevent electric corrosion, well suited for high-precision high-speed rotary systems.

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• 15° contact angle bears combined radial and single-direction axial load
• Lightweight Si3N4 ceramic balls cut centrifugal force for ultra-high speed operation
• Non-conductive ceramic balls isolate current to avoid electric corrosion
• Low friction reduces heat generation in continuous high-speed running
• High rigidity and stable rotation precision for precision machinery
• Open design allows oil lubrication for extreme high-speed working conditions

• CNC machine tool spindles
• High speed high-frequency motors
• Precision grinding equipment
• High-speed textile spindles
• Aerospace auxiliary rotary parts
• High-speed automation rotary units

*Ready stock. Short lead time. Fast delivery. Send us your bearing list and let’s get started!

• 30 years professional bearing industry experience
• ISO certified strict quality inspection
• Flexible OEM & private label customization
• 3-5 days fast delivery for stocked bearings
• Full bearing series, universal interchangeable size
• Factory direct price & reliable after-sales service

*Need custom bearings? Share your drawings, specifications or requirements — we’ll find the right solution for you.