Ball and Roller Bearings

Bearing Tolerances!d!d2ddd+!dd+!dBTheoretical tapered boreBTapered bore having dimensionaldifference of the average borediameter within the flat surfaceTable 6.9 (3) Thrust bearingsrs min orr1 min 40.050.080.10.150.20.30.611.11.522.134567.59.5121519rs max orr1s maxRadial and axial direcition0.10.160.20.30.50.81.52.22.73.544.55.56.581012.515182125Unit mm4 These are the allowable minimum dimensions of the chamferdimension "r" or "r1" and are described in the dimensional table.Table 6.10 (1) Tolerance of and tolerance values for tapered bore ofradial bearingsStandard taper ratio 1:12 tapared hole (class 0) Unitmd!dmpVdp1 2!d1mp - !dmpmmover incl. high low high low max10183050801201802503154005006308001,0001,25010183050801201802503154005006308001,0001,2501,600+++++++++222733394654637281+ 89+ 97+ 110+ 125+ 140+ 165+ 1950000000000000000151821Table 6.10 (2) Tolerance of and tolerance values for tapered bore ofradial bearingsStandard taper ratio 1:30 tapered bore (class 0) Units mdmmover incl.508012018025031540050080120180250315400500630!dmphigh low+15+20+25+30+35+40+45+5000000000++++++++++++253035404652576370+ 80+ 90+ 105+ 125high+30+35+40+46+52+57+63+70!d1mp0000000000000000low1 Applies to all radial flat planes of inner ring tapered bore.2 Does not apply to diameter series 7 and 8.Note: Quantifiers1 For a standard taper ratio of 1:12d1dB 12 1For a standard taper ratio of 1:30d1dB30 !dmp Dimensional difference of the average borediameter within the flat surface at the theoreticalsmall end of the tapered bore. !dmpDimensional difference of the average borediameter within the flat surface at the theoreticallarge end of the tapered bore. VdpUnevenness of the bore diameter with the flat surface B Nominal width of inner ring Half of the tapered bore’s nominal taper angleFor a standard taper ratio of 1:122239.4For a standard taper ratio of 1:300577.4!dmp0000000091113161922404652576370Vdp 1 2max1922404652576370A-47