6308-ZZ Metal Shielded Deep Groove Ball Bearing 40×90×23mm for Electric Motors and Industrial Machinery Product Overview The 6308-ZZ is a single-row deep groove ball bearing with dimensions of 40 × 90 × 23 mm. It features non-contact metal shields on both sides to help keep dust and solid particles away from the rolling elements. The shielded design offers low rotational resistance and helps retain internal grease, making it suitable for industrial machinery requiring smooth