6203-2RS-8, 6203-ZZ-8 Ball Bearings, 6203-2RS-10, 6203-ZZ .
6203-2RS, 6203-ZZ Ball Bearings. 17mm x 40mm x 12mm . More Information. Your part number might be: 6203,6203 RS,6203 2RS,6203 Z,6203 ZZ,6203-Z . These ball bearings are made of high quality Chrome Steel and are pre-lubricated with grease from the factory and are available in both RS (Rubber Seals) and ZZ (Metal Shields) configurations.