KSM R-Series
KSM Bearing Company manufactures a complete line of R-Series bearings at their modern factory in Japan. This precision inch series of ball bearings is available with bore sizes from 0.1250" to 1.2500" while the O.D. goes from 0.3750" to 2.250".
They are available with seals, shields or in an open configuration and are suitable for many high-speed applications.