轴承精度按照GB/T307-94>的GUO家标准可以分为G E D C B.。这些公差和ISO、JIS等标准对照如下：标准精度GB/T307-94BCDEGISOCLASS2CALSS4CLASS5CLASS6NORMAL CLASSDINP2P4P5P6P0ANSIABEC9ABEC7ABEC5ABEC3ABEC1JISJIS2JIS4JIS5JIS6JIS0G级/ABEC1级内圈单位： umd^dmpVdpVdmpKia^BsVBs直径系列mm90,12,3,4超过到Z大Z小Z大Z大Z大Z大Z小Z大0.62.50-810866100-40122.5100-810866100-1201510180-810866100-1202018300-10131088130-1202030500-12151299150-1202050800-1519191111200-15025外圈单位： umD^DmpVDpVDmpKea^CsVCs开式轴承封闭式轴承mm直径系列90,12,3,42,3,4超过到Z大Z小Z大Z大Z大Z大Z小Z大2.560-8108610615和内圈相同6180-810861061518300-912971271530500-11141181682050800-13161310201025801200-151919112611351201500-18232314301440E级/ABEC3级内圈单位： um.d^dmpVdpVdmpKia^BsVBs直径系列mm90,12,3,4超过到Z大Z小Z大Z大Z大Z大Z小Z大0.62.50-7975550-40122.5100-7975560-1201510180-7975570-1202018300-81086680-1202030500-10131088100-1202050800-12151599100-15025外圈单位： um.D^DmpVDp2)VDmp4)Kea^CsVCs开式轴承封闭式轴承mm直径系列90,12,3,40,1,2,3,4超过到Z大Z小Z大Z大Z大Z大Z小Z大2.560-7975958和内圈相同6180-797595818300-81086106930500-911971371050800-111411816813801200-131616102010181201500-15191911251120D级/ABEC5级内圈.单位：um.d^dmpVdpVdmpKiaSdSia^BsVBs直径系列mm90,1,2,3,4超过到Z大Z小Z大3Z大Z大Z大Z大Z小Z大0.62.50-55434770-4052.5100-55434770-40510180-55434770-80518300-66534880-120530500-88645880-120550800-99755880-1506外圈单位：um.D^DmpVDpVDmpKeaSDSea^CsVCs直径系列SD1mm90,1,2,3,4超过到Z大Z小Z大Z大Z大Z大Z大Z大Z小Z大2.560-5543588和内圈相同56180-5543588518300-66536885?30500-7754788550800-997588106801200-1010851091181201500-1111861110138B级/ABEC7级内圈单位：um.d^dmp^dsVdpVdmpKiaSdSia^BsVBs直径系列mm7,8,91,7,2,3,4超过到Z大Z小Z大Z小Z大Z大Z大Z大Z大Z大Z小Z大0.62.50-40-44322.5330-402.52.5100-40-44322.5330-402.510180-40-44322.5330-802.518300-50-5542.53440-1202.530500-60-66434440-120350800-70-7753.54550-1504外圈单位：um.d^Dmp^DsVdpVDmpKiaSDSea^CsVCsmm直径系列7,8,91,7,2,3,4超过到Z大Z小Z大Z小Z大Z大Z大Z大Z大Z大Z小Z大2.560-40-4432345和内圈相同2.56180-40-44323452.518300-50-5542.54452.5?30500-60-66535452.550800-70-7753.55453801200-80-886465641201500-90-99757575