Bearing runout can be divided into synchronous runout and asynchronous runout. The influence of synchronous runout on the overall runout of the worktable can be minimized by grinding the worktable, but the influence of asynchronous runout cannot be eliminated in this link. It is determined by the outer diameter tolerance and roundness of the rollers. Therefore, the better the asynchronous runout control of the bearing is, the smaller the final radial and axial runout of the worktable will be, that is, the higher the running accuracy will be. When selecting bearing brands and accuracy grades, it is recommended not to only pay attention to bearing assembly runout, but to have an in-depth understanding of the accuracy standards that affect bearing asynchronous runout.