RA (outer ring fission, inner ring overall)
this series is to decrease the thickness of RB type inner ring and outer ring to the limit of the compact, the structure is the same outer ring fission structure as RB type, are best suited for light weight, compact design, such as the robot manipulator and rotating parts.

Applicability:

widely used in precision rotating workbenches, manipulator rotating joints, medical instruments, measuring instruments and so on.