<h2>Basic Info.</h2> <table> <tr><td>Inner Diameter</td><td>8 mm</td></tr> <tr><td>Outer Diameter</td><td>22 mm</td></tr> <tr><td>Thickness</td><td>7 mm</td></tr> <tr><td>Material</td><td>Ceramic (Si3N4, ZrO2)</td></tr> <tr><td>Load Direction</td><td>Radial Bearing</td></tr> <tr><td>Application</td><td>Motorcycle, Auto Parts, Electric Motor, Ebike</td></tr> </table> <h2>Introduction</h2> Ceramic Deep Groove Ball Bearings offer low friction coefficient and high hardness. Suitable for high-speed, high-precision applications with grease or oil lubrication. Precision ratings include P0, P6, P5, P4. Made in China, OEM/ODM supported.