1. Product Overview The MR85 Micro Miniature Deep Groove Ball Bearing is ultra-small structure made of high-hardness chrome steel, featuring low friction, quiet and stable precision rotation, ideal for miniature equipment with limited mounting space. 👉 Get a quote within 24 hours for your project 2. Technical Specifications Parameter Value Model MR85 Inner Diameter (ID) 5 mm Outer Diameter (OD) 8 mm Width 2.5 mm Structure Single row miniature deep groove ball bearing Material