06000-22326 bearings are used in the Excavator Slewing gearbox system of KOMATSU： 06000-22326 BEARING KOMATSU parts： PC550LC-8, PC400LC-6Z, PC400-7E0, PC400-8, PC400-5D, PC450LC-7, PC410-5, PC750SE-7, PC750-6, PC800SE-7, PC800SE-8, PC800-6, PC1000-1,PC490LCI-11