THK RA-C Series Cross Roller Ring

The THK RA-C Series Cross Roller Ring is a thin, compact cross roller ring featuring a single-split outer ring that provides high rigidity while allowing both inner-ring and outer-ring rotation. This gives the RA-C greater flexibility than designs intended only for inner-ring rotation. The series shares the same basic dimensions as the RA Series while using its single-split outer ring to maintain rigidity during operation. THK notes that where a specific level of accuracy is required, the RA-C can be used for inner-ring rotation.

Available in spline shaft diameters from 50 to 200 mm, the standard lineup includes RA5008C through RA20013C. Basic dynamic radial load ratings range from 5.10 to 25.8 kN, with basic static load ratings from 7.19 to 54.7 kN, depending on the model.