609-2RS Ball Bearing Also Called Small Bearing 609-2RS, Steel Ball Bearing Plastic Cages 609-2RS. Deep Groove Ball Bearings Are Versatile, Self-Retaining Bearings With Solid Outer Rings, Inner Rings And Ball And Cage Assemblies. These Bearings With Their Simple Design, High Resistance And Low-Maintenance, As Well As Sealed And Unsealed. Due To The Manufacturing Processes Used, Open Bearings Can Have Turned Recesses In The Outer Ring For Seals Or Shields. Thanks to their low frictional torque, deep groove ball bearings can be used for high speeds.