Deep Groove Ball Bearing Open 8x28x9mm or 0.3150×1.1024×0.3543″ Features Compact Design: Suitable for limited radial space. High Speed Capability: Ideal for high-speed applications. Low Noise & Vibration: Engineered for smooth and quiet operation. Versatile Sealing Options: Available with metal shields (ZZ) or rubber seals (2RS) for dust and contamination resistance. Corrosion Resistance: Available in stainless steel version (638-SS) for humid or food-grade environments. Optional Configurations Stainless Steel Version (638-SS) Customized Clearance (C3, C4) Non-standard Lubricants for special environments Ceramic Hybrid Version for ultra-high speed or non-conductive applications