The SKF 6308-2Z is a deep groove ball bearing with double metal shields (2Z), featuring a 40mm inner diameter, 90mm outer diameter, and 23mm thickness. Made of high-carbon chromium steel (GCr15) with a pressed steel cage, it is optimized for dry, dusty environments (e.g., mining crushing equipment, cement mixing plants, warehouse cranes). It handles radial and bidirectional axial loads, offering low friction, excellent dust protection, and long service life.