The accuracies of ball bearings for FYH rolling bearings are shown in Table 11.1 to Table 11.5. FYH ball bearings (special symbol S5) for blower assemblies are manufactured with higher precision than ordinary products (refer to Table 11.4). The allowable limit values u200bu200bof the inner ring chamfer size of cylindrical bore bearings are shown in Table 11.6. Permissible deviation and permissible value of inner ring of ball bearing for rolling bearing with house Permissible deviation and permissible value of outer ring of ball bearing for rolling bearing with house. The allowable deviation of the distance from the center of the raceway to the side of the inner ring of the ball bearing for rolling bearings with a block is the deviation of the distance S from the center of the raceway to the side of the inner ring from the nominal inner diameter d of the bearing. 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 hole of the FYH tapered bore bearing The theoretical tapered hole has a tapered hole with an average inner diameter deviation in the plane. Note 1) Applies to all radial planes of tapered holes. Remarks) 1. The scope of application is applicable to the tapered bore of the inner ring of the tapered bore radial bearing with the standard taper ratio of 1/12. In the above table, d13dmp 3d1mp: Theoretical deviation of the average inner diameter of the tapered hole in the big end plane Vdp: The variation of the inner diameter of the plane B: The nominal inner ring width u003d 223' 9.4' u003d 2.385 94 u003d 0.041 643 rad Theoretical tapered hole : The theoretical base diameter of the big end of the tapered hole The deviation dimension of the average inner diameter in the big end plane of the tapered hole in theory. The allowable limit value of the inner ring chamfer size of the cylindrical bore bearing [Remarks] Although the correct surface shape of the chamfer is not specified, However, in the shaft plane, its contour cannot exceed the imaginary arc of radius r (minimum) connecting the side of the inner ring and the inner diameter of the bearing.