1. Product Overview 6201 2Z/C3 is single row deep groove ball bearing. 2Z represents double-sided stamped metal dust shields; C3 means increased internal clearance compared to standard CN clearance, adapting to thermal expansion caused by continuous operation temperature rise. This bearing can bear radial load and minor bidirectional axial load simultaneously. Double metal shields block dry dust and debris, and the bearing is pre-filled with grease for initial operation.