>> P.453
K■AccuracyThe tolerances of Steel-on-steel Spherical Bushings of the metric series is shown in Table 2.The tolerances of the GE type are applicable to bush-ings before splitting the outer ring and after surface treatment.The tolerances of the SB and SB…A types are applic-able to bushings before splitting the outer ring and before surface treatment.The tolerances of the GE…EC type are applicable to bushings before splitting the outer ring.The tolerances of the Spherical Bushings of the inch series are shown in Table 3. The tolerances of the bore diameter are applicable to bushings after surface treatment, while other tolerances are applicable to bushings before splitting the outer ring and before surface treatment.Although minor dimensional changes may occur dur-Table 3 Tolerances of inner and outer rings of inch series SBBunit: μmd or D(1)Nominal bore dia. or ∆dmpSingle plane ∆DmpSingle plane ∆Bs or ∆CsDeviation of a single outside dia.mmmean bore mean outside inner ring width or dia. deviationdia. deviationouter ring widthOver-Incl.HighLowHighLowHighLow50.80050.80076.20076.20080.96280.962120.650120.650152.400152.400177.800177.800222.25000000-13-15-20-20-25----0000000-13-15-15-20-25-25-300000000-130-130-130-130-130-130-130Note(1)d for ∆dmp, ∆Bs and ∆Cs and D for ∆Dmp, respectively.■Clearanceing surface treatment, they have negligible inuence The radial internal clearances of Spherical Bushings on the overall performance.are the values before splitting the outer ring, and are shown in Tables 4, 5 and 6. The radial internal clear-Table 2 Tolerances of inner and outer rings of metric series (JIS Class 0)unit: μmances of the inch series are shown in the dimension d or D(1)Nominal bore dia. ∆dmpSingle plane ∆DmpSingle plane ∆Bs or ∆CsDeviation of a single or outside dia. mmmean bore dia. mean outside inner ring width or deviationdia. deviationouter ring widthOverIncl.HighLowHighLowHighLow 2.5 6 18 30 50 80120150180250315400 6 18 30 50 80120150180250315400500000000000000- 8- 8-10-12-15-20-25-25-30-35-40-45--00000000000- 8- 9-11-13-15-18-25-30-35-40-45000000000000-120-120-120-120-150-200-250-250-300-350-400-450Note(1)d for ∆dmp, ∆Bs and ∆Cs and D for ∆Dmp, respectively.table.Clearances other than these can also be prepared on request. Please consult IKO.Table 4 Radial internal clearance of SB and SB … A types (Steel-on-steel)unit: μmdNominal bore dia. mm12152022253035404550556065707580859095100110115120130150SB typeSB … A typeMin.70Max.12575140851509095160170100185110200Min.3240Max.688250100601207214285165120215100192K4
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