The 6203-ZZ-C3 deep groove ball bearing features a single row design with double metal shields (ZZ) and a C3 radial clearance for enhanced performance under thermal expansion. It is constructed from high carbon 52100 chrome steel for both balls and rings, ensuring durability and high load capacity with a dynamic load rating around 2158 lbs. The bearing measures 17 mm inner diameter, 40 mm outer diameter, and 12 mm width, supporting speeds up to 18,000 RPM. Its pressed steel cage maintains ball alignment, making it suitable for applications requiring low friction, low noise, and reliable radial load handling.