The SKF 6309-2Z is a deep groove ball bearing with double metal shields (2Z), featuring a 45mm inner diameter, 100mm outer diameter, and 25mm 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.