The SKF 6003 is an open deep groove ball bearing (unshielded/unsealed), with a 17mm inner diameter, 35mm outer diameter, and 10mm thickness. Made of high-carbon chromium bearing steel (GCr15) with a pressed steel cage, it is suitable for light-load, high-speed applications in clean environments (e.g., precision instruments, motor shafts). It can handle radial and bidirectional axial loads and requires external lubrication.