The SKF 6203 is an open deep groove ball bearing (unsealed), featuring a 17mm inner diameter, 40mm outer diameter, and 12mm thickness. Made of high-carbon chromium steel (GCr15) with a pressed steel cage, it suits high-speed, light-load applications (e.g., small motors, automation equipment). It handles radial and bidirectional axial loads, offering low friction, high rotational speed, and easy maintenance.