6308-RZ Ball Bearing Double Sealed ID 40mm OD 90mm Width 23mm6308 RZ Deep Groove Ball Bearing Single Row Radial Type 40mm x 90mm x 23mm Double Sealed 6308 RZ is a single row deep groove ball bearing designed for medium to heavy duty applications. This bearing features double sealing to protect against contaminants and retain lubrication. It fits standard metric systems and is made for smooth, long life performance in motors, gearboxes, conveyors, and more. Size: 40mm ID x 90mm OD x 23mm Width Size (Inches): 1.