Basic dynamic load rating indicates the fatigue resistant capacity

(i.e.load carrying capacity).It shows that with pure radial load

(for radial bearings) or axial load (for thrust bearings) of certain

amount and directiaon, and with the presumption of running inner ring

and motionless outer ring 1million rotations. The basic load rating for

radial bearings and thrust bearing is called radial basic load rating and

axial basic load rating respectively, indicated by Cr and Ca, whose values

are provided in the bearing dimension tables.