The accuracy of ball bearings for rolling bearings with seats is shown in Table 11.1~Table 11.5. Ball bearings for blower components (special symbol S5) have higher manufacturing accuracy than ordinary products (refer to Table 11.4). The allowable limit value of the chamfer size of the inner ring of the cylindrical bore bearing is shown in Table 11.6. The allowable deviation and allowable value of the inner ring of ball bearing for rolling bearing with seat. The allowable deviation and allowable value of the outer ring of ball bearing for rolling bearing with seat. The allowable deviation of the distance from the center of the raceway to the side of the inner ring of the ball bearing for seated rolling bearings. The deviation of the bearing's nominal inner diameter d from the center of the race to the side of the inner ring S. The allowable deviation and allowable value of the inner ring of the ball bearing (S5) for the blower assembly. The allowable deviation and allowable value of the tapered bore of the tapered bore bearing. Theoretically, the tapered bore has a tapered bore with a deviation of the average inner diameter in the plane. Note 1) Applicable to all radial planes of tapered holes. Remarks) 1. The scope of application is applicable to the tapered bore of the inner ring of a tapered radial bearing with a standard taper ratio of 1/12. In the above table, d13dmp 3d1mp: the theoretical deviation size of the average inner diameter of the large end of the tapered hole Vdp: the variation of the inner diameter of the plane B: the nominal inner ring width u003d 2°23' 9.4' u003d 2.385 94 ° u003d 0.041 643 rad theoretically Conical hole: the theoretical reference diameter of the large end of the tapered hole. The theoretical deviation of the average inner diameter of the large end of the tapered hole. The allowable limit value of the chamfer size of the inner ring of the cylindrical bore bearing [Remarks] The correct surface shape of the chamfer is not It is specified, but its contour in the shaft plane cannot exceed the imaginary arc of radius r (minimum) connecting the side surface of the inner ring and the inner diameter surface of the bearing.