2)The basic load ratings C and C0 apply if the bearing outer ring(with cylindrical outside surface) is . NACV64/3AS YCRC-64 RF-64-Y YCRC-64 CCYR-4
NTN. Roller Followers (Yoke Type Track Rollers). Cor. Cr. Cor. Cr. Bearing type. Applicable shaft diameter (mm). Load capacity. Composition of bearing number.
The bearing numbers of bearings whose outer ring surface is cylindrical have the suffix "X" JIS Class 0 is the dimensional tolerance of the outside diameter D.