The SKF 6218 is an open deep groove ball bearing (unsealed), featuring a 90mm inner diameter, 160mm outer diameter, and 30mm thickness. Made of high-carbon chromium steel (GCr15) with a pressed steel cage, it suits medium-speed, medium-load applications (e.g., industrial motors, fans, heavy-duty transmission equipment). It handles radial and bidirectional axial loads, offering high rigidity, low friction, and easy maintenance.