1、公差与配合（摘自 GB1800180479）1基本偏差系列及配合种类2标准公差值及孔和轴的极限偏差值标准公差值(基本尺寸大于 6 至 500mm)公 差 等 级基本尺寸mm IT5 IT6 IT7 IT8 IT9 IT10 IT11 IT1261010181830305050808012012018018025025031531540068911131518202325911131619222529323615182125303540465257222733394654637281893643526274871001151301405870841001201401601852102309011
2、0130160190220250290320360150180210250300350400460520570400500 27 40 63 97 155 250 400 630孔的极限差值（基本尺寸由大于 10 至 315mm） m 基 本 尺 寸 mm公差带等级0 18 18 30 30 50 50 80 80 120 120 180 180 250 250 3158 +77+50 +98+65 +119+80 +146+100 +174+120 +208+145 +242+170 +271+1909 +93+50 +117+65 +142+80 +174+100 +207+120 +24
3、5+145 +285+170 +320+19010 +120+50 +149+65 +180+80 +220+100 +260+120 +305+145 +355+170 +400+190D11 +160+50 +195+65 +240+80 +290+100 +340+120 +395+145 +460+170 +510+1906 +43+32 +53+40 +66+50 +79+60 +94+72 +110+85 +129+100 +142+1107 +50+32 +61+40 +75+50 +90+60 +107+72 +125+85 +146+100 +162+1108 +59+32
4、+73+40 +89+50 +106+60 +126+72 +148+85 +172+100 +191+1109 +75+32 +92+40 +112+50 +134+60 +159+72 +185+85 +215+100 +240+110E10 +102+32 +124+40 +150+50 +180+60 +212+72 +245+85 +285+100 +320+1106 +27+16 +33+20 +41+25 +49+30 +58+36 +68+43 +79+50 +88+567 +34+16 +41+20 +50+25 +60+30 +71+36 +83+43 +96+50 +10
5、8+568 +43+16 +53+20 +64+25 +76+30 +90+36 +106+43 +122+50 +137+56F9 +59+16 +72+20 +87+25 +104+30 +123+36 +143+43 +165+50 +186+566 +110 +130 +160 +190 +220 +250 +290 +3207 +180 +210 +250 +300 +350 +400 +460 +5208 +270 +330 +390 +460 +540 +630 +720 +810H9 +430 +520 +620 +740 + 0 +1000 +1150 +130010 +70
6、0 +840 +1000 +1200 +1400 +1600 +1850 +210011 +1100 +1300 +1600 +1900 +2200 +2500 +2900 +32006 +29 +211 +313 +415 +418 +421 +524 +5277 +612 +615 +718 +921 +1025 +1228 +1333 +1636K8 +819 +1023 +1227 +1432 +1638 +2043 +2250 +25566 920 1128 1224 1433 1638 2045 2251 2557N7 523 728 833 939 1045 1252 1460
7、1466公差带等级基 本 尺 寸 mm0 18 18 30 30 50 50 80 80 120 120 180 180 250 250 3158 330 336 342 450 458 467 577 5866 1526 1831 2137 2645 3052 3661 4170 4779P7 1129 1435 1742 2151 2459 2868 3379 3688轴的极限偏差 （基本尺寸由于大于 10 至 315mm）基 本 尺 寸 mm公差带等级10 18 18 30 30 50 50 80 80 120 120 180 180 250 250 3156 5061657880961
8、001191201421451701701991902227 50686586801051001301201551451851702161902428 50776598801191001461201741452081702421902719 50936511780142100174120207145245170285190320d10 5012065149801801002201202601453051703551904007 1634204125503060367143835096561088 16432053256430763690431065012256137f9 16592072258
9、730104361234314350165561865 614716920102312271432153517406 61772092510291234143915441749g7 624728934104012471454156117695 0809011131518202360110130161922252932701802102503003504004652h8 027033039046054063072081公差带等级基 本 尺 寸 mm10 18 18 30 30 50 50 80 80 120 120 180 180 250 250 315904305206207408701000
10、11501305 +9+1 +11+2 +13+2 +15+2 +18+3 +21+3 +24+4 +27+46+12+1+15+2+18+2+21+2+25+3+28+3+33+3+36+4K7 +19+1 +23+2 +27+2 +32+2 +38+3 +43+3 +50+4 +56+45 +15+7 +17+8 +20+9 +24+11 +28+13 +33+15 +37+17 +43+206 +18+7 +21+8 +25+9 +30+11 +35+13 +40+15 +46+17 +52+20M7 +25+7 +29+8 +34+9 +41+11 +48+13 +55+15 +63+
11、17 +72+205 +20+12 +24+15 +28+17 +33+22 +38+23 +45+27 +51+31 +57+346+23+12+28+15+33+17+39+20+45+23+52+27+60+31+66+34N7 +30+12 +36+15 +42+17 +50+20 +58+23 +67+27 +77+31 +86+345 +26+18 +31+22 +37+26 +45+32 +52+37 +61+43 +70+50 +79+566+29+18+35+22+42+26+51+32+59+37+68+43+79+50+88+56p7 +36+18 +43+22 +51+26 +62+32 +72+37 +83+43 +96+50 +108+56注：标注者为优先公差等级，应优先选用。
