The R-Series ball bearings, named for their  numerical model numbers, are also known as our Precision Inch Series ball   bearings. R series bearings are available in open, sealed and shielded   configurations. Sealed and shielded bearings may be slightly wider as shown in  the table.
         
     The R-Series bearings are single row, inch  series bearings available from 1/8 through 1-1/2 inch bore sizes. The  construction of these bearings enables them to accept thrust as well as radial  load. Their ball complement and selection of retainers also allows them to work  well in high-speed applications.